/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:47:18,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:47:18,303 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:47:18,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:47:18,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:47:18,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:47:18,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:47:18,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:47:18,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:47:18,354 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:47:18,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:47:18,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:47:18,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:47:18,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:47:18,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:47:18,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:47:18,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:47:18,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:47:18,383 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:47:18,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:47:18,393 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:47:18,396 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:47:18,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:47:18,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:47:18,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:47:18,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:47:18,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:47:18,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:47:18,417 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:47:18,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:47:18,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:47:18,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:47:18,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:47:18,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:47:18,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:47:18,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:47:18,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:47:18,427 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:47:18,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:47:18,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:47:18,430 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:47:18,438 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 23:47:18,496 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:47:18,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:47:18,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:47:18,503 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:47:18,503 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:47:18,503 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:47:18,504 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:47:18,504 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:47:18,504 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:47:18,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:47:18,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:47:18,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:47:18,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:47:18,507 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:47:18,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:47:18,508 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:47:18,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:47:18,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:47:18,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:47:18,509 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:47:18,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:47:18,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:47:18,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:47:18,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:47:18,511 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:47:18,511 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:47:18,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:47:18,512 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:47:18,512 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:47:18,513 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:47:18,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:47:19,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:47:19,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:47:19,015 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:47:19,016 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:47:19,017 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label50.c [2020-10-26 23:47:19,102 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b79e38828/410daddf060b4a7da62313f47b3f9f56/FLAG31721d9df [2020-10-26 23:47:20,077 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:47:20,078 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label50.c [2020-10-26 23:47:20,117 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b79e38828/410daddf060b4a7da62313f47b3f9f56/FLAG31721d9df [2020-10-26 23:47:20,634 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b79e38828/410daddf060b4a7da62313f47b3f9f56 [2020-10-26 23:47:20,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:47:20,649 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:47:20,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:47:20,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:47:20,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:47:20,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:47:20" (1/1) ... [2020-10-26 23:47:20,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bc40e63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:47:20, skipping insertion in model container [2020-10-26 23:47:20,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:47:20" (1/1) ... [2020-10-26 23:47:20,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:47:20,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:47:21,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:47:21,705 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:47:22,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:47:22,027 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:47:22,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:47:22 WrapperNode [2020-10-26 23:47:22,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:47:22,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:47:22,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:47:22,031 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:47:22,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:47:22" (1/1) ... [2020-10-26 23:47:22,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:47:22" (1/1) ... [2020-10-26 23:47:22,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:47:22" (1/1) ... [2020-10-26 23:47:22,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:47:22" (1/1) ... [2020-10-26 23:47:22,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:47:22" (1/1) ... [2020-10-26 23:47:22,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:47:22" (1/1) ... [2020-10-26 23:47:22,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:47:22" (1/1) ... [2020-10-26 23:47:22,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:47:22,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:47:22,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:47:22,276 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:47:22,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:47:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:47:22,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:47:22,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:47:22,364 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:47:22,365 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:47:22,365 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:47:22,365 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:47:22,366 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:47:22,366 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:47:22,366 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:47:22,367 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:47:22,367 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:47:22,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:47:22,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:47:22,368 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:47:22,368 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:47:22,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:47:22,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:47:22,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:47:22,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:47:22,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:47:22,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:47:28,473 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:47:28,474 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:47:28,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:47:28 BoogieIcfgContainer [2020-10-26 23:47:28,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:47:28,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:47:28,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:47:28,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:47:28,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:47:20" (1/3) ... [2020-10-26 23:47:28,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742ff691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:47:28, skipping insertion in model container [2020-10-26 23:47:28,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:47:22" (2/3) ... [2020-10-26 23:47:28,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742ff691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:47:28, skipping insertion in model container [2020-10-26 23:47:28,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:47:28" (3/3) ... [2020-10-26 23:47:28,496 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label50.c [2020-10-26 23:47:28,510 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:47:28,517 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:47:28,534 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:47:28,620 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:47:28,620 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:47:28,620 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:47:28,620 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:47:28,620 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:47:28,621 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:47:28,621 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:47:28,621 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:47:28,669 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-26 23:47:28,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-26 23:47:28,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:47:28,678 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:47:28,678 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:47:28,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:47:28,688 INFO L82 PathProgramCache]: Analyzing trace with hash -738747081, now seen corresponding path program 1 times [2020-10-26 23:47:28,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:47:28,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579668278] [2020-10-26 23:47:28,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:47:28,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:28,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:29,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:29,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-26 23:47:29,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:29,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 629 [2020-10-26 23:47:29,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:29,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:47:29,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:47:29,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 23:47:29,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:47:29,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:47:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:29,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:29,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:29,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:47:29,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:29,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:47:29,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:29,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:47:29,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:47:29,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:47:29,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:29,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:47:29,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579668278] [2020-10-26 23:47:29,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:47:29,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:47:29,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69402886] [2020-10-26 23:47:29,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:47:29,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:47:29,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:47:29,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:47:29,718 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-26 23:47:39,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:47:39,525 INFO L93 Difference]: Finished difference Result 1208 states and 2172 transitions. [2020-10-26 23:47:39,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:47:39,529 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-26 23:47:39,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:47:39,551 INFO L225 Difference]: With dead ends: 1208 [2020-10-26 23:47:39,551 INFO L226 Difference]: Without dead ends: 703 [2020-10-26 23:47:39,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:47:39,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2020-10-26 23:47:39,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 697. [2020-10-26 23:47:39,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-10-26 23:47:39,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1016 transitions. [2020-10-26 23:47:39,682 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1016 transitions. Word has length 19 [2020-10-26 23:47:39,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:47:39,683 INFO L481 AbstractCegarLoop]: Abstraction has 697 states and 1016 transitions. [2020-10-26 23:47:39,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:47:39,683 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1016 transitions. [2020-10-26 23:47:39,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-26 23:47:39,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:47:39,688 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-26 23:47:39,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:47:39,689 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:47:39,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:47:39,690 INFO L82 PathProgramCache]: Analyzing trace with hash -980502564, now seen corresponding path program 1 times [2020-10-26 23:47:39,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:47:39,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624932330] [2020-10-26 23:47:39,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:47:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:39,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:40,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:41,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:41,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:41,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:47:41,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:47:41,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1509 [2020-10-26 23:47:41,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:41,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:47:41,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:47:41,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 23:47:41,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:47:41,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:47:41,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:41,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:41,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:41,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:47:41,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:41,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:47:41,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:41,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:47:41,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:47:41,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:47:41,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:47:41,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:47:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:41,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:41,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:41,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:41,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:47:41,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:47:41,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-26 23:47:41,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:41,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:47:41,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:47:41,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:47:41,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:41,983 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 23:47:41,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624932330] [2020-10-26 23:47:41,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:47:41,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:47:41,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520314128] [2020-10-26 23:47:41,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:47:41,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:47:41,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:47:41,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:47:41,988 INFO L87 Difference]: Start difference. First operand 697 states and 1016 transitions. Second operand 7 states. [2020-10-26 23:47:43,934 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:47:55,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:47:55,218 INFO L93 Difference]: Finished difference Result 2057 states and 3018 transitions. [2020-10-26 23:47:55,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:47:55,224 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-10-26 23:47:55,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:47:55,239 INFO L225 Difference]: With dead ends: 2057 [2020-10-26 23:47:55,239 INFO L226 Difference]: Without dead ends: 1366 [2020-10-26 23:47:55,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:47:55,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2020-10-26 23:47:55,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 1329. [2020-10-26 23:47:55,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1329 states. [2020-10-26 23:47:55,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 1721 transitions. [2020-10-26 23:47:55,319 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 1721 transitions. Word has length 98 [2020-10-26 23:47:55,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:47:55,319 INFO L481 AbstractCegarLoop]: Abstraction has 1329 states and 1721 transitions. [2020-10-26 23:47:55,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:47:55,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 1721 transitions. [2020-10-26 23:47:55,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-26 23:47:55,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:47:55,327 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:47:55,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:47:55,328 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:47:55,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:47:55,328 INFO L82 PathProgramCache]: Analyzing trace with hash -92850192, now seen corresponding path program 1 times [2020-10-26 23:47:55,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:47:55,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277085035] [2020-10-26 23:47:55,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:47:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:55,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:55,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:56,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:56,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:56,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:57,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:00,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:00,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-26 23:48:00,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:48:00,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4716 [2020-10-26 23:48:00,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:00,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:48:00,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:48:00,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-26 23:48:00,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:00,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:48:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:00,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:00,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:00,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:48:00,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:00,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:48:00,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:00,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:48:00,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:00,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:48:00,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:48:00,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:48:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:00,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:00,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:00,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:48:00,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:00,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-26 23:48:00,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:00,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:00,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:00,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:48:00,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:00,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:48:00,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:00,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:00,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:00,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:48:00,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:00,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-26 23:48:00,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:00,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:00,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:00,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:48:00,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:01,005 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 23 proven. 74 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:48:01,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277085035] [2020-10-26 23:48:01,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:48:01,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:48:01,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208751281] [2020-10-26 23:48:01,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:48:01,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:48:01,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:48:01,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:48:01,014 INFO L87 Difference]: Start difference. First operand 1329 states and 1721 transitions. Second operand 8 states. [2020-10-26 23:48:04,505 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:48:14,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:48:14,363 INFO L93 Difference]: Finished difference Result 3641 states and 4829 transitions. [2020-10-26 23:48:14,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:48:14,364 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 193 [2020-10-26 23:48:14,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:48:14,380 INFO L225 Difference]: With dead ends: 3641 [2020-10-26 23:48:14,380 INFO L226 Difference]: Without dead ends: 2318 [2020-10-26 23:48:14,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:48:14,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2020-10-26 23:48:14,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 2280. [2020-10-26 23:48:14,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2280 states. [2020-10-26 23:48:14,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 2807 transitions. [2020-10-26 23:48:14,489 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 2807 transitions. Word has length 193 [2020-10-26 23:48:14,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:48:14,493 INFO L481 AbstractCegarLoop]: Abstraction has 2280 states and 2807 transitions. [2020-10-26 23:48:14,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:48:14,494 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 2807 transitions. [2020-10-26 23:48:14,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-26 23:48:14,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:48:14,516 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:48:14,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:48:14,516 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:48:14,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:48:14,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1688721890, now seen corresponding path program 1 times [2020-10-26 23:48:14,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:48:14,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727498118] [2020-10-26 23:48:14,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:48:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:14,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:14,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:15,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:19,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:19,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-26 23:48:19,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:48:19,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-26 23:48:19,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:19,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:48:19,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:48:19,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-26 23:48:19,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:19,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:48:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:19,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:19,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:19,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:48:19,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:19,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:48:19,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:19,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:48:19,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:19,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:48:19,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:19,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:48:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:20,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:20,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:20,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:48:20,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:20,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-10-26 23:48:20,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:20,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:20,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:20,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:48:20,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:20,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 23:48:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:21,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:21,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:21,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:48:21,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:21,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:48:21,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:21,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:48:21,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:48:21,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:48:21,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:21,551 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:48:21,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727498118] [2020-10-26 23:48:21,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:48:21,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:48:21,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906292990] [2020-10-26 23:48:21,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:48:21,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:48:21,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:48:21,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:48:21,554 INFO L87 Difference]: Start difference. First operand 2280 states and 2807 transitions. Second operand 7 states. [2020-10-26 23:48:21,714 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-26 23:48:24,805 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-26 23:48:31,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:48:31,604 INFO L93 Difference]: Finished difference Result 4910 states and 5995 transitions. [2020-10-26 23:48:31,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:48:31,608 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 299 [2020-10-26 23:48:31,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:48:31,624 INFO L225 Difference]: With dead ends: 4910 [2020-10-26 23:48:31,624 INFO L226 Difference]: Without dead ends: 2636 [2020-10-26 23:48:31,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:48:31,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2636 states. [2020-10-26 23:48:31,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2636 to 2602. [2020-10-26 23:48:31,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2602 states. [2020-10-26 23:48:31,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2602 states to 2602 states and 3143 transitions. [2020-10-26 23:48:31,747 INFO L78 Accepts]: Start accepts. Automaton has 2602 states and 3143 transitions. Word has length 299 [2020-10-26 23:48:31,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:48:31,749 INFO L481 AbstractCegarLoop]: Abstraction has 2602 states and 3143 transitions. [2020-10-26 23:48:31,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:48:31,749 INFO L276 IsEmpty]: Start isEmpty. Operand 2602 states and 3143 transitions. [2020-10-26 23:48:31,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-26 23:48:31,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:48:31,755 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:48:31,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:48:31,756 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:48:31,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:48:31,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1564783534, now seen corresponding path program 1 times [2020-10-26 23:48:31,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:48:31,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962109057] [2020-10-26 23:48:31,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:48:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:31,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:32,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:32,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:32,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:33,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:36,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:36,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-26 23:48:36,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:48:36,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-26 23:48:36,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:36,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:48:36,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:48:36,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 319 [2020-10-26 23:48:36,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:37,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:48:37,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:37,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:37,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:37,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:48:37,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:37,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:48:37,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:37,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:48:37,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:37,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:48:37,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:37,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:48:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:37,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:37,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:37,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:37,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:48:37,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:48:37,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-26 23:48:37,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:37,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:37,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:37,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:48:37,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:37,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:48:37,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:37,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:37,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:38,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:38,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:48:38,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:48:38,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 969 [2020-10-26 23:48:38,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:38,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:48:38,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:38,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:48:38,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:38,885 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-10-26 23:48:39,038 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-10-26 23:48:39,173 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2020-10-26 23:48:40,013 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 1 proven. 106 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-26 23:48:40,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962109057] [2020-10-26 23:48:40,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:48:40,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:48:40,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45279063] [2020-10-26 23:48:40,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 23:48:40,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:48:40,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 23:48:40,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:48:40,016 INFO L87 Difference]: Start difference. First operand 2602 states and 3143 transitions. Second operand 11 states. [2020-10-26 23:48:40,250 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-26 23:48:41,673 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:48:42,079 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2020-10-26 23:48:42,641 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2020-10-26 23:48:42,982 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2020-10-26 23:48:43,333 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-26 23:48:44,731 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2020-10-26 23:48:45,207 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2020-10-26 23:48:45,564 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 75 [2020-10-26 23:48:46,077 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 85 [2020-10-26 23:48:46,462 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2020-10-26 23:48:47,360 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 26 [2020-10-26 23:48:48,195 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2020-10-26 23:48:48,412 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 28 [2020-10-26 23:49:00,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:49:00,218 INFO L93 Difference]: Finished difference Result 3776 states and 4803 transitions. [2020-10-26 23:49:00,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-26 23:49:00,220 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 314 [2020-10-26 23:49:00,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:49:00,248 INFO L225 Difference]: With dead ends: 3776 [2020-10-26 23:49:00,248 INFO L226 Difference]: Without dead ends: 3773 [2020-10-26 23:49:00,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=226, Invalid=586, Unknown=0, NotChecked=0, Total=812 [2020-10-26 23:49:00,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3773 states. [2020-10-26 23:49:00,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3773 to 3244. [2020-10-26 23:49:00,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3244 states. [2020-10-26 23:49:00,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3244 states to 3244 states and 4113 transitions. [2020-10-26 23:49:00,388 INFO L78 Accepts]: Start accepts. Automaton has 3244 states and 4113 transitions. Word has length 314 [2020-10-26 23:49:00,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:49:00,389 INFO L481 AbstractCegarLoop]: Abstraction has 3244 states and 4113 transitions. [2020-10-26 23:49:00,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 23:49:00,389 INFO L276 IsEmpty]: Start isEmpty. Operand 3244 states and 4113 transitions. [2020-10-26 23:49:00,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-10-26 23:49:00,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:49:00,401 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:49:00,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:49:00,402 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:49:00,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:49:00,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1939052110, now seen corresponding path program 1 times [2020-10-26 23:49:00,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:49:00,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868669986] [2020-10-26 23:49:00,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:49:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:00,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:01,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:02,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:02,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 403 [2020-10-26 23:49:02,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:49:02,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2291 [2020-10-26 23:49:02,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:02,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:02,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:49:02,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-26 23:49:02,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:03,032 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:49:03,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:49:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:03,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:03,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:03,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:49:03,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:03,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:49:03,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:03,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:49:03,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:03,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:49:03,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:03,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:49:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:03,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:03,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:03,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:49:03,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:03,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-26 23:49:03,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:03,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:49:03,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:03,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:49:03,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:03,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:49:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:03,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:03,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:03,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-26 23:49:03,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:03,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-26 23:49:03,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:03,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:03,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:49:03,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-26 23:49:03,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:04,056 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:49:04,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868669986] [2020-10-26 23:49:04,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:49:04,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:49:04,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404905788] [2020-10-26 23:49:04,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:49:04,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:49:04,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:49:04,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:49:04,062 INFO L87 Difference]: Start difference. First operand 3244 states and 4113 transitions. Second operand 7 states. [2020-10-26 23:49:06,705 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:49:08,173 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:49:17,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:49:17,442 INFO L93 Difference]: Finished difference Result 8143 states and 10816 transitions. [2020-10-26 23:49:17,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:49:17,445 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 389 [2020-10-26 23:49:17,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:49:17,470 INFO L225 Difference]: With dead ends: 8143 [2020-10-26 23:49:17,470 INFO L226 Difference]: Without dead ends: 5212 [2020-10-26 23:49:17,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:49:17,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5212 states. [2020-10-26 23:49:17,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5212 to 4849. [2020-10-26 23:49:17,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4849 states. [2020-10-26 23:49:17,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4849 states to 4849 states and 5981 transitions. [2020-10-26 23:49:17,630 INFO L78 Accepts]: Start accepts. Automaton has 4849 states and 5981 transitions. Word has length 389 [2020-10-26 23:49:17,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:49:17,631 INFO L481 AbstractCegarLoop]: Abstraction has 4849 states and 5981 transitions. [2020-10-26 23:49:17,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:49:17,631 INFO L276 IsEmpty]: Start isEmpty. Operand 4849 states and 5981 transitions. [2020-10-26 23:49:17,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2020-10-26 23:49:17,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:49:17,640 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-26 23:49:17,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:49:17,641 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:49:17,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:49:17,641 INFO L82 PathProgramCache]: Analyzing trace with hash 825756657, now seen corresponding path program 1 times [2020-10-26 23:49:17,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:49:17,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632630837] [2020-10-26 23:49:17,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:49:17,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:17,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:17,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:18,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:18,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:20,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:22,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:22,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 426 [2020-10-26 23:49:22,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:49:22,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-26 23:49:22,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:22,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:49:22,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:49:22,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-26 23:49:22,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:22,942 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:49:22,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:49:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:22,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:22,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:22,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:49:22,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:22,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:49:22,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:22,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:49:22,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:22,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:49:22,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:22,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:49:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:23,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:23,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:23,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:49:23,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:23,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-26 23:49:23,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:23,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:49:23,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:23,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 23:49:23,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:23,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:49:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:23,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:23,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:23,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:23,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:49:23,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:49:23,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 440 [2020-10-26 23:49:23,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:23,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:23,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:49:23,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:49:23,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:23,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-26 23:49:23,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:23,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:23,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:23,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-26 23:49:23,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:23,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-26 23:49:23,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:23,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:23,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:49:23,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-26 23:49:23,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:23,993 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 217 proven. 6 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-26 23:49:23,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632630837] [2020-10-26 23:49:23,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:49:23,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:49:23,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829371515] [2020-10-26 23:49:23,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:49:23,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:49:23,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:49:23,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:49:23,995 INFO L87 Difference]: Start difference. First operand 4849 states and 5981 transitions. Second operand 7 states. [2020-10-26 23:49:24,999 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:49:27,918 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:49:41,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:49:41,421 INFO L93 Difference]: Finished difference Result 11946 states and 14982 transitions. [2020-10-26 23:49:41,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:49:41,423 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 410 [2020-10-26 23:49:41,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:49:41,456 INFO L225 Difference]: With dead ends: 11946 [2020-10-26 23:49:41,456 INFO L226 Difference]: Without dead ends: 6446 [2020-10-26 23:49:41,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:49:41,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6446 states. [2020-10-26 23:49:41,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6446 to 5811. [2020-10-26 23:49:41,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5811 states. [2020-10-26 23:49:41,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5811 states to 5811 states and 6807 transitions. [2020-10-26 23:49:41,654 INFO L78 Accepts]: Start accepts. Automaton has 5811 states and 6807 transitions. Word has length 410 [2020-10-26 23:49:41,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:49:41,655 INFO L481 AbstractCegarLoop]: Abstraction has 5811 states and 6807 transitions. [2020-10-26 23:49:41,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:49:41,655 INFO L276 IsEmpty]: Start isEmpty. Operand 5811 states and 6807 transitions. [2020-10-26 23:49:41,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2020-10-26 23:49:41,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:49:41,667 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-26 23:49:41,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:49:41,668 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:49:41,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:49:41,669 INFO L82 PathProgramCache]: Analyzing trace with hash -355634432, now seen corresponding path program 1 times [2020-10-26 23:49:41,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:49:41,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104810656] [2020-10-26 23:49:41,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:49:41,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:41,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:42,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:43,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:43,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:46,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:46,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 513 [2020-10-26 23:49:46,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:49:46,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-26 23:49:46,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:46,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:46,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:49:46,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 23:49:46,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:47,138 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:49:47,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:49:47,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:47,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:47,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:47,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:49:47,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:47,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 23:49:47,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:47,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:49:47,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:47,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:49:47,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:47,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:49:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:47,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:47,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:47,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:49:47,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:47,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-26 23:49:47,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:47,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:49:47,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:47,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:49:47,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:47,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:49:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:47,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:48,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:48,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:49:48,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:48,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-26 23:49:48,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:48,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:48,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:49:48,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:49:48,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:48,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-26 23:49:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:48,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:48,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:48,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-26 23:49:48,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:48,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:49:48,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:48,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:49:48,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-26 23:49:48,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:49:48,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:48,714 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 145 proven. 92 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-26 23:49:48,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104810656] [2020-10-26 23:49:48,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:49:48,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:49:48,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918469272] [2020-10-26 23:49:48,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:49:48,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:49:48,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:49:48,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:49:48,716 INFO L87 Difference]: Start difference. First operand 5811 states and 6807 transitions. Second operand 7 states. [2020-10-26 23:49:51,298 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-26 23:49:53,500 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-26 23:49:58,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:49:58,275 INFO L93 Difference]: Finished difference Result 12649 states and 14855 transitions. [2020-10-26 23:49:58,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:49:58,276 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 497 [2020-10-26 23:49:58,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:49:58,306 INFO L225 Difference]: With dead ends: 12649 [2020-10-26 23:49:58,307 INFO L226 Difference]: Without dead ends: 7151 [2020-10-26 23:49:58,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:49:58,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7151 states. [2020-10-26 23:49:58,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7151 to 6771. [2020-10-26 23:49:58,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6771 states. [2020-10-26 23:49:58,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6771 states to 6771 states and 7768 transitions. [2020-10-26 23:49:58,497 INFO L78 Accepts]: Start accepts. Automaton has 6771 states and 7768 transitions. Word has length 497 [2020-10-26 23:49:58,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:49:58,498 INFO L481 AbstractCegarLoop]: Abstraction has 6771 states and 7768 transitions. [2020-10-26 23:49:58,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:49:58,498 INFO L276 IsEmpty]: Start isEmpty. Operand 6771 states and 7768 transitions. [2020-10-26 23:49:58,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2020-10-26 23:49:58,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:49:58,514 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-26 23:49:58,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:49:58,514 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:49:58,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:49:58,515 INFO L82 PathProgramCache]: Analyzing trace with hash -474016008, now seen corresponding path program 1 times [2020-10-26 23:49:58,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:49:58,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100251785] [2020-10-26 23:49:58,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:49:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:58,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:59,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:59,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:00,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:00,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 525 [2020-10-26 23:50:00,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:50:00,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2303 [2020-10-26 23:50:00,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:00,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:50:00,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:50:00,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:50:00,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:01,187 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:50:01,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:50:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:01,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:01,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:01,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:50:01,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:01,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:50:01,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:01,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:50:01,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:01,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:50:01,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:01,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:50:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:01,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:01,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:01,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:50:01,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:01,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 23:50:01,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:01,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:50:01,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:01,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:50:01,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:01,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:50:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:01,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:01,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:01,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:50:01,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:01,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-26 23:50:01,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:01,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:50:01,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:01,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:50:01,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:01,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:50:01,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:01,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:01,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:01,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:01,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-26 23:50:01,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:50:01,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-26 23:50:01,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:01,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:50:01,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:50:01,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-26 23:50:01,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:50:01,964 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 204 proven. 12 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-26 23:50:01,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100251785] [2020-10-26 23:50:01,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:50:01,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:50:01,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455464121] [2020-10-26 23:50:01,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:50:01,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:50:01,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:50:01,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:50:01,967 INFO L87 Difference]: Start difference. First operand 6771 states and 7768 transitions. Second operand 7 states. [2020-10-26 23:50:04,601 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:50:05,945 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:50:17,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:50:17,856 INFO L93 Difference]: Finished difference Result 16396 states and 19269 transitions. [2020-10-26 23:50:17,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:50:17,859 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 509 [2020-10-26 23:50:17,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:50:17,887 INFO L225 Difference]: With dead ends: 16396 [2020-10-26 23:50:17,887 INFO L226 Difference]: Without dead ends: 8991 [2020-10-26 23:50:17,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:50:17,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8991 states. [2020-10-26 23:50:18,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8991 to 7726. [2020-10-26 23:50:18,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7726 states. [2020-10-26 23:50:18,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7726 states to 7726 states and 8852 transitions. [2020-10-26 23:50:18,113 INFO L78 Accepts]: Start accepts. Automaton has 7726 states and 8852 transitions. Word has length 509 [2020-10-26 23:50:18,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:50:18,115 INFO L481 AbstractCegarLoop]: Abstraction has 7726 states and 8852 transitions. [2020-10-26 23:50:18,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:50:18,115 INFO L276 IsEmpty]: Start isEmpty. Operand 7726 states and 8852 transitions. [2020-10-26 23:50:18,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2020-10-26 23:50:18,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:50:18,123 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-26 23:50:18,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:50:18,123 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:50:18,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:50:18,124 INFO L82 PathProgramCache]: Analyzing trace with hash 302413941, now seen corresponding path program 1 times [2020-10-26 23:50:18,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:50:18,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25676852] [2020-10-26 23:50:18,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:50:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:18,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:18,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:18,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 538 [2020-10-26 23:50:18,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:18,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 711 [2020-10-26 23:50:18,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:18,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:50:18,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:50:18,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-26 23:50:18,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:19,235 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:50:19,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:50:19,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:19,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:19,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:19,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:50:19,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:19,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:50:19,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:19,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:50:19,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:19,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:50:19,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:19,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:50:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:19,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:19,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:19,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:50:19,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:19,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 23:50:19,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:19,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:50:19,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:19,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:50:19,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:19,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:50:19,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:19,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:19,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:19,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:50:19,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:19,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-26 23:50:19,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:19,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:50:19,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:19,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:50:19,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:19,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:50:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:19,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:19,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:19,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-26 23:50:19,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:19,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-26 23:50:19,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:19,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:50:19,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:50:19,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-26 23:50:19,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:20,126 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 244 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:50:20,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25676852] [2020-10-26 23:50:20,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:50:20,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:50:20,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576508738] [2020-10-26 23:50:20,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:50:20,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:50:20,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:50:20,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:50:20,129 INFO L87 Difference]: Start difference. First operand 7726 states and 8852 transitions. Second operand 7 states. [2020-10-26 23:50:22,978 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:50:24,857 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-26 23:50:31,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:50:31,173 INFO L93 Difference]: Finished difference Result 17684 states and 20968 transitions. [2020-10-26 23:50:31,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:50:31,176 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 522 [2020-10-26 23:50:31,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:50:31,211 INFO L225 Difference]: With dead ends: 17684 [2020-10-26 23:50:31,211 INFO L226 Difference]: Without dead ends: 10271 [2020-10-26 23:50:31,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:50:31,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10271 states. [2020-10-26 23:50:31,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10271 to 10237. [2020-10-26 23:50:31,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10237 states. [2020-10-26 23:50:31,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10237 states to 10237 states and 11667 transitions. [2020-10-26 23:50:31,495 INFO L78 Accepts]: Start accepts. Automaton has 10237 states and 11667 transitions. Word has length 522 [2020-10-26 23:50:31,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:50:31,496 INFO L481 AbstractCegarLoop]: Abstraction has 10237 states and 11667 transitions. [2020-10-26 23:50:31,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:50:31,496 INFO L276 IsEmpty]: Start isEmpty. Operand 10237 states and 11667 transitions. [2020-10-26 23:50:31,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2020-10-26 23:50:31,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:50:31,506 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-26 23:50:31,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:50:31,507 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:50:31,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:50:31,508 INFO L82 PathProgramCache]: Analyzing trace with hash -63328451, now seen corresponding path program 1 times [2020-10-26 23:50:31,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:50:31,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728342103] [2020-10-26 23:50:31,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:50:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:31,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:32,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:35,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:35,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 560 [2020-10-26 23:50:35,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:50:35,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3913 [2020-10-26 23:50:35,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:35,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:50:35,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:50:35,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-26 23:50:35,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:35,798 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:50:35,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:50:35,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:35,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:35,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:35,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:50:35,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:35,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:50:35,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:35,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:50:35,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:35,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:50:35,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:35,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:50:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:35,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:35,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:35,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:50:35,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:35,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-26 23:50:35,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:35,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:50:35,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:35,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:50:35,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:36,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:50:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:36,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:36,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:36,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:50:36,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:36,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-26 23:50:36,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:36,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:50:36,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:36,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:50:36,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:36,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:50:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:36,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:36,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:36,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-26 23:50:36,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:36,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-26 23:50:36,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:36,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:50:36,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:50:36,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-26 23:50:36,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:36,982 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:50:36,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728342103] [2020-10-26 23:50:36,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:50:36,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:50:36,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146687449] [2020-10-26 23:50:36,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:50:36,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:50:36,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:50:36,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:50:36,990 INFO L87 Difference]: Start difference. First operand 10237 states and 11667 transitions. Second operand 7 states. [2020-10-26 23:50:37,139 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:50:42,248 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:50:47,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:50:47,166 INFO L93 Difference]: Finished difference Result 24817 states and 28996 transitions. [2020-10-26 23:50:47,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:50:47,169 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 544 [2020-10-26 23:50:47,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:50:47,223 INFO L225 Difference]: With dead ends: 24817 [2020-10-26 23:50:47,224 INFO L226 Difference]: Without dead ends: 14893 [2020-10-26 23:50:47,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:50:47,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14893 states. [2020-10-26 23:50:47,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14893 to 13328. [2020-10-26 23:50:47,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13328 states. [2020-10-26 23:50:47,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13328 states to 13328 states and 15588 transitions. [2020-10-26 23:50:47,772 INFO L78 Accepts]: Start accepts. Automaton has 13328 states and 15588 transitions. Word has length 544 [2020-10-26 23:50:47,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:50:47,773 INFO L481 AbstractCegarLoop]: Abstraction has 13328 states and 15588 transitions. [2020-10-26 23:50:47,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:50:47,773 INFO L276 IsEmpty]: Start isEmpty. Operand 13328 states and 15588 transitions. [2020-10-26 23:50:47,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2020-10-26 23:50:47,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:50:47,781 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:50:47,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:50:47,781 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:50:47,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:50:47,782 INFO L82 PathProgramCache]: Analyzing trace with hash 768343869, now seen corresponding path program 1 times [2020-10-26 23:50:47,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:50:47,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586863872] [2020-10-26 23:50:47,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:50:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:48,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:49,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:49,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 581 [2020-10-26 23:50:49,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:49,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1958 [2020-10-26 23:50:49,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:49,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:50:49,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-26 23:50:49,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-26 23:50:49,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:50,154 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:50:50,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:50:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:50,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:50,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:50,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:50:50,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:50,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:50:50,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:50,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:50:50,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:50,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:50:50,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:50,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:50:50,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:50,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:50,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:50,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:50:50,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:50,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-26 23:50:50,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:50,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:50:50,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:50,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-26 23:50:50,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:50,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:50:50,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:50,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:50,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:50,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:50:50,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:50,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-26 23:50:50,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:50,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:50:50,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:50:50,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:50:50,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:51,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:50:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:51,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:51,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:51,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 23:50:51,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:51,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-26 23:50:51,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:51,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:50:51,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:50:51,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-26 23:50:51,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:52,073 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 395 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 23:50:52,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586863872] [2020-10-26 23:50:52,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:50:52,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:50:52,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128448559] [2020-10-26 23:50:52,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:50:52,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:50:52,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:50:52,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:50:52,076 INFO L87 Difference]: Start difference. First operand 13328 states and 15588 transitions. Second operand 10 states. [2020-10-26 23:50:55,958 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:50:57,659 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 65