/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_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:47:30,247 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:47:30,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:47:30,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:47:30,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:47:30,305 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:47:30,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:47:30,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:47:30,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:47:30,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:47:30,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:47:30,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:47:30,316 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:47:30,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:47:30,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:47:30,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:47:30,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:47:30,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:47:30,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:47:30,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:47:30,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:47:30,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:47:30,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:47:30,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:47:30,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:47:30,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:47:30,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:47:30,348 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:47:30,349 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:47:30,350 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:47:30,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:47:30,352 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:47:30,353 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:47:30,354 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:47:30,355 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:47:30,356 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:47:30,357 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:47:30,357 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:47:30,357 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:47:30,358 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:47:30,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:47:30,360 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 23:47:30,388 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:47:30,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:47:30,390 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:47:30,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:47:30,390 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:47:30,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:47:30,391 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:47:30,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:47:30,392 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:47:30,392 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:47:30,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:47:30,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:47:30,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:47:30,393 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:47:30,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:47:30,393 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:47:30,393 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:47:30,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:47:30,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:47:30,394 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:47:30,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:47:30,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:47:30,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:47:30,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:47:30,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:47:30,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:47:30,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:47:30,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:47:30,396 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:47:30,396 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:47:30,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:47:30,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:47:30,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:47:30,858 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:47:30,858 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:47:30,860 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label51.c [2020-10-26 23:47:30,955 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afeb2046f/5f1a80eb6f6d47ddb8679d9c28f2bbaf/FLAG1ea31d642 [2020-10-26 23:47:31,930 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:47:31,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label51.c [2020-10-26 23:47:31,967 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afeb2046f/5f1a80eb6f6d47ddb8679d9c28f2bbaf/FLAG1ea31d642 [2020-10-26 23:47:32,493 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afeb2046f/5f1a80eb6f6d47ddb8679d9c28f2bbaf [2020-10-26 23:47:32,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:47:32,506 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:47:32,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:47:32,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:47:32,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:47:32,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:47:32" (1/1) ... [2020-10-26 23:47:32,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49f520da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:47:32, skipping insertion in model container [2020-10-26 23:47:32,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:47:32" (1/1) ... [2020-10-26 23:47:32,538 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:47:32,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:47:33,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:47:33,574 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:47:33,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:47:33,892 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:47:33,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:47:33 WrapperNode [2020-10-26 23:47:33,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:47:33,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:47:33,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:47:33,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:47:33,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:47:33" (1/1) ... [2020-10-26 23:47:33,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:47:33" (1/1) ... [2020-10-26 23:47:33,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:47:33" (1/1) ... [2020-10-26 23:47:33,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:47:33" (1/1) ... [2020-10-26 23:47:34,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:47:33" (1/1) ... [2020-10-26 23:47:34,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:47:33" (1/1) ... [2020-10-26 23:47:34,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:47:33" (1/1) ... [2020-10-26 23:47:34,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:47:34,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:47:34,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:47:34,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:47:34,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:47:33" (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 23:47:34,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:47:34,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:47:34,197 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:47:34,197 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:47:34,197 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:47:34,199 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:47:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:47:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:47:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:47:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:47:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:47:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:47:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:47:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:47:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:47:34,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:47:34,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:47:34,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:47:34,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:47:34,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:47:34,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:47:37,656 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:47:37,656 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:47:37,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:47:37 BoogieIcfgContainer [2020-10-26 23:47:37,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:47:37,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:47:37,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:47:37,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:47:37,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:47:32" (1/3) ... [2020-10-26 23:47:37,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ef54b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:47:37, skipping insertion in model container [2020-10-26 23:47:37,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:47:33" (2/3) ... [2020-10-26 23:47:37,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ef54b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:47:37, skipping insertion in model container [2020-10-26 23:47:37,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:47:37" (3/3) ... [2020-10-26 23:47:37,669 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label51.c [2020-10-26 23:47:37,682 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:47:37,687 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:47:37,701 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:47:37,733 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:47:37,733 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:47:37,733 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:47:37,733 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:47:37,734 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:47:37,734 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:47:37,734 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:47:37,734 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:47:37,763 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-26 23:47:37,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-26 23:47:37,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:47:37,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:47:37,771 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:47:37,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:47:37,778 INFO L82 PathProgramCache]: Analyzing trace with hash 2124106695, now seen corresponding path program 1 times [2020-10-26 23:47:37,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:47:37,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892986535] [2020-10-26 23:47:37,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:47:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:37,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:38,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:38,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-26 23:47:38,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:38,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 617 [2020-10-26 23:47:38,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:38,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:47:38,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:47:38,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-26 23:47:38,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:47:38,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:47:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:38,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:38,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:38,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:47:38,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:38,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:47:38,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:38,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:47:38,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:47:38,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:47:38,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:38,776 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 23:47:38,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [892986535] [2020-10-26 23:47:38,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:47:38,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:47:38,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070263019] [2020-10-26 23:47:38,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:47:38,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:47:38,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:47:38,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:47:38,812 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-26 23:47:48,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:47:48,325 INFO L93 Difference]: Finished difference Result 1250 states and 2231 transitions. [2020-10-26 23:47:48,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:47:48,328 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-26 23:47:48,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:47:48,366 INFO L225 Difference]: With dead ends: 1250 [2020-10-26 23:47:48,367 INFO L226 Difference]: Without dead ends: 730 [2020-10-26 23:47:48,383 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 23:47:48,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2020-10-26 23:47:48,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 713. [2020-10-26 23:47:48,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-10-26 23:47:48,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1207 transitions. [2020-10-26 23:47:48,549 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1207 transitions. Word has length 23 [2020-10-26 23:47:48,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:47:48,550 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1207 transitions. [2020-10-26 23:47:48,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:47:48,550 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1207 transitions. [2020-10-26 23:47:48,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-26 23:47:48,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:47:48,555 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:47:48,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:47:48,556 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:47:48,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:47:48,557 INFO L82 PathProgramCache]: Analyzing trace with hash -328255535, now seen corresponding path program 1 times [2020-10-26 23:47:48,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:47:48,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939704362] [2020-10-26 23:47:48,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:47:48,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:48,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:48,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:50,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:50,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-26 23:47:50,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:47:50,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1982 [2020-10-26 23:47:50,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:50,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:47:50,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:47:50,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:47:50,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:47:50,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:47:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:50,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:50,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:50,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:47:50,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:50,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:47:50,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:50,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:47:50,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:47:50,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:47:50,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:50,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:47:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:50,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:50,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:50,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:47:50,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:50,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-26 23:47:50,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:50,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:47:50,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:47:50,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:47:50,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:51,107 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:47:51,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939704362] [2020-10-26 23:47:51,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:47:51,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:47:51,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765364995] [2020-10-26 23:47:51,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:47:51,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:47:51,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:47:51,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:47:51,112 INFO L87 Difference]: Start difference. First operand 713 states and 1207 transitions. Second operand 7 states. [2020-10-26 23:48:04,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:48:04,558 INFO L93 Difference]: Finished difference Result 1776 states and 3021 transitions. [2020-10-26 23:48:04,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:48:04,561 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2020-10-26 23:48:04,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:48:04,569 INFO L225 Difference]: With dead ends: 1776 [2020-10-26 23:48:04,570 INFO L226 Difference]: Without dead ends: 1069 [2020-10-26 23:48:04,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:48:04,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2020-10-26 23:48:04,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1042. [2020-10-26 23:48:04,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1042 states. [2020-10-26 23:48:04,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1663 transitions. [2020-10-26 23:48:04,620 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1663 transitions. Word has length 92 [2020-10-26 23:48:04,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:48:04,621 INFO L481 AbstractCegarLoop]: Abstraction has 1042 states and 1663 transitions. [2020-10-26 23:48:04,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:48:04,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1663 transitions. [2020-10-26 23:48:04,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-26 23:48:04,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:48:04,624 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:48:04,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:48:04,624 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:48:04,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:48:04,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1574759087, now seen corresponding path program 1 times [2020-10-26 23:48:04,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:48:04,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030232535] [2020-10-26 23:48:04,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:48:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:04,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:04,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:05,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:05,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:05,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-26 23:48:05,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:48:05,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1027 [2020-10-26 23:48:05,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:05,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:48:05,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:48:05,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:48:05,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:48:05,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:48:05,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:05,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:05,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:05,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:48:05,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:05,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:48:05,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:05,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:48:05,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:05,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:48:05,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:05,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:48:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:05,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:06,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:06,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:06,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:48:06,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:48:06,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-26 23:48:06,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:06,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:06,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:06,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:48:06,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:06,265 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 23:48:06,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030232535] [2020-10-26 23:48:06,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:48:06,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:48:06,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838910107] [2020-10-26 23:48:06,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:48:06,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:48:06,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:48:06,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:48:06,270 INFO L87 Difference]: Start difference. First operand 1042 states and 1663 transitions. Second operand 7 states. [2020-10-26 23:48:18,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:48:18,523 INFO L93 Difference]: Finished difference Result 3370 states and 5710 transitions. [2020-10-26 23:48:18,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:48:18,525 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-10-26 23:48:18,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:48:18,546 INFO L225 Difference]: With dead ends: 3370 [2020-10-26 23:48:18,546 INFO L226 Difference]: Without dead ends: 2334 [2020-10-26 23:48:18,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:48:18,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2334 states. [2020-10-26 23:48:18,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2334 to 2312. [2020-10-26 23:48:18,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2312 states. [2020-10-26 23:48:18,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2312 states to 2312 states and 3422 transitions. [2020-10-26 23:48:18,662 INFO L78 Accepts]: Start accepts. Automaton has 2312 states and 3422 transitions. Word has length 93 [2020-10-26 23:48:18,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:48:18,663 INFO L481 AbstractCegarLoop]: Abstraction has 2312 states and 3422 transitions. [2020-10-26 23:48:18,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:48:18,663 INFO L276 IsEmpty]: Start isEmpty. Operand 2312 states and 3422 transitions. [2020-10-26 23:48:18,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-26 23:48:18,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:48:18,668 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-26 23:48:18,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:48:18,668 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:48:18,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:48:18,669 INFO L82 PathProgramCache]: Analyzing trace with hash 252363762, now seen corresponding path program 1 times [2020-10-26 23:48:18,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:48:18,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627590193] [2020-10-26 23:48:18,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:48:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:18,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:19,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:20,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:20,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-26 23:48:20,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:48:20,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1321 [2020-10-26 23:48:20,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:20,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:48:20,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:48:20,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-26 23:48:20,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:20,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:48:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:20,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:20,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:20,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:48:20,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:20,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:48:20,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:20,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:48:20,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:20,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:48:20,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:20,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:48:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:20,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:20,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:20,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 23:48:20,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:20,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-26 23:48:20,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:20,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:20,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:20,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 23:48:20,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:20,728 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:48:20,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627590193] [2020-10-26 23:48:20,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:48:20,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:48:20,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000457779] [2020-10-26 23:48:20,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:48:20,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:48:20,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:48:20,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:48:20,747 INFO L87 Difference]: Start difference. First operand 2312 states and 3422 transitions. Second operand 7 states. [2020-10-26 23:48:32,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:48:32,906 INFO L93 Difference]: Finished difference Result 5970 states and 9474 transitions. [2020-10-26 23:48:32,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:48:32,915 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 139 [2020-10-26 23:48:32,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:48:32,942 INFO L225 Difference]: With dead ends: 5970 [2020-10-26 23:48:32,942 INFO L226 Difference]: Without dead ends: 3971 [2020-10-26 23:48:32,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:48:32,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3971 states. [2020-10-26 23:48:33,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3971 to 3583. [2020-10-26 23:48:33,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3583 states. [2020-10-26 23:48:33,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3583 states to 3583 states and 4944 transitions. [2020-10-26 23:48:33,100 INFO L78 Accepts]: Start accepts. Automaton has 3583 states and 4944 transitions. Word has length 139 [2020-10-26 23:48:33,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:48:33,102 INFO L481 AbstractCegarLoop]: Abstraction has 3583 states and 4944 transitions. [2020-10-26 23:48:33,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:48:33,102 INFO L276 IsEmpty]: Start isEmpty. Operand 3583 states and 4944 transitions. [2020-10-26 23:48:33,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-26 23:48:33,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:48:33,112 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 23:48:33,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:48:33,112 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:48:33,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:48:33,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1451684045, now seen corresponding path program 1 times [2020-10-26 23:48:33,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:48:33,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447420849] [2020-10-26 23:48:33,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:48:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:33,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:33,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:33,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:35,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:35,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:37,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:37,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:38,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:38,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-26 23:48:38,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 23:48:38,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-26 23:48:38,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:38,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-26 23:48:38,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:48:38,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 305 [2020-10-26 23:48:38,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:38,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:48:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:38,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:38,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:38,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:48:38,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:38,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:48:38,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:38,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:48:38,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:38,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:48:38,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:38,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:48:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:38,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:38,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:38,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:48:38,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:38,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-26 23:48:38,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:38,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:38,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:38,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:48:38,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:38,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:48:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:38,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:38,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:39,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:39,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:48:39,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:48:39,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 492 [2020-10-26 23:48:39,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:39,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:48:39,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:39,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:48:39,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-26 23:48:39,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-26 23:48:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:39,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:40,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:40,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:40,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-26 23:48:40,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:48:40,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-10-26 23:48:40,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:40,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:40,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:40,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-26 23:48:40,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:48:40,811 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 0 proven. 282 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-26 23:48:40,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447420849] [2020-10-26 23:48:40,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:48:40,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-26 23:48:40,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449728046] [2020-10-26 23:48:40,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 23:48:40,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:48:40,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 23:48:40,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:48:40,816 INFO L87 Difference]: Start difference. First operand 3583 states and 4944 transitions. Second operand 13 states. [2020-10-26 23:48:41,130 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2020-10-26 23:48:42,763 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2020-10-26 23:48:43,774 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2020-10-26 23:48:44,287 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 85 [2020-10-26 23:48:44,542 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2020-10-26 23:48:45,745 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2020-10-26 23:48:46,238 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 87 [2020-10-26 23:48:46,496 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2020-10-26 23:48:46,948 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 75 [2020-10-26 23:48:49,692 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 75 [2020-10-26 23:48:57,820 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-10-26 23:48:59,909 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-10-26 23:49:01,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:49:01,818 INFO L93 Difference]: Finished difference Result 9816 states and 14283 transitions. [2020-10-26 23:49:01,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-26 23:49:01,820 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 298 [2020-10-26 23:49:01,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:49:01,860 INFO L225 Difference]: With dead ends: 9816 [2020-10-26 23:49:01,860 INFO L226 Difference]: Without dead ends: 6239 [2020-10-26 23:49:01,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=385, Invalid=1337, Unknown=0, NotChecked=0, Total=1722 [2020-10-26 23:49:01,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6239 states. [2020-10-26 23:49:02,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6239 to 6139. [2020-10-26 23:49:02,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6139 states. [2020-10-26 23:49:02,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6139 states to 6139 states and 8623 transitions. [2020-10-26 23:49:02,094 INFO L78 Accepts]: Start accepts. Automaton has 6139 states and 8623 transitions. Word has length 298 [2020-10-26 23:49:02,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:49:02,095 INFO L481 AbstractCegarLoop]: Abstraction has 6139 states and 8623 transitions. [2020-10-26 23:49:02,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 23:49:02,095 INFO L276 IsEmpty]: Start isEmpty. Operand 6139 states and 8623 transitions. [2020-10-26 23:49:02,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2020-10-26 23:49:02,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:49:02,110 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 23:49:02,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:49:02,110 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:49:02,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:49:02,111 INFO L82 PathProgramCache]: Analyzing trace with hash 69305944, now seen corresponding path program 1 times [2020-10-26 23:49:02,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:49:02,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492025842] [2020-10-26 23:49:02,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:49:02,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:02,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:02,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:02,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:07,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:07,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 436 [2020-10-26 23:49:07,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:49:07,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-26 23:49:07,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:07,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:49:07,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:49:07,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-26 23:49:07,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:07,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:49:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:07,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:07,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:07,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:49:07,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:07,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:49:07,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:07,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:49:07,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:07,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:49:07,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:07,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:49:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:07,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:08,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:08,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:49:08,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:08,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 467 [2020-10-26 23:49:08,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:08,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:08,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:49:08,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:49:08,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:08,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 23:49:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:08,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:08,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:08,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-26 23:49:08,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:08,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-26 23:49:08,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:08,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:49:08,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:49:08,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:49:08,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:49:08,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-10-26 23:49:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:09,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:09,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:09,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-26 23:49:09,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:09,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-26 23:49:09,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:09,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:49:09,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-26 23:49:09,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:49:09,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:09,728 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 45 proven. 187 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-26 23:49:09,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492025842] [2020-10-26 23:49:09,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:49:09,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:49:09,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028652184] [2020-10-26 23:49:09,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:49:09,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:49:09,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:49:09,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:49:09,737 INFO L87 Difference]: Start difference. First operand 6139 states and 8623 transitions. Second operand 7 states. [2020-10-26 23:49:20,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:49:20,327 INFO L93 Difference]: Finished difference Result 12009 states and 17097 transitions. [2020-10-26 23:49:20,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:49:20,337 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 420 [2020-10-26 23:49:20,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:49:20,373 INFO L225 Difference]: With dead ends: 12009 [2020-10-26 23:49:20,373 INFO L226 Difference]: Without dead ends: 6183 [2020-10-26 23:49:20,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:49:20,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6183 states. [2020-10-26 23:49:20,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6183 to 6145. [2020-10-26 23:49:20,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6145 states. [2020-10-26 23:49:20,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6145 states to 6145 states and 8635 transitions. [2020-10-26 23:49:20,581 INFO L78 Accepts]: Start accepts. Automaton has 6145 states and 8635 transitions. Word has length 420 [2020-10-26 23:49:20,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:49:20,582 INFO L481 AbstractCegarLoop]: Abstraction has 6145 states and 8635 transitions. [2020-10-26 23:49:20,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:49:20,582 INFO L276 IsEmpty]: Start isEmpty. Operand 6145 states and 8635 transitions. [2020-10-26 23:49:20,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2020-10-26 23:49:20,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:49:20,595 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:49:20,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:49:20,596 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:49:20,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:49:20,596 INFO L82 PathProgramCache]: Analyzing trace with hash -305164707, now seen corresponding path program 1 times [2020-10-26 23:49:20,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:49:20,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553466985] [2020-10-26 23:49:20,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:49:20,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:20,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:21,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:21,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:21,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:24,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:25,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:25,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 462 [2020-10-26 23:49:25,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:49:25,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-26 23:49:25,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:25,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 23:49:25,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:49:25,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 433 [2020-10-26 23:49:25,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:25,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:49:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:25,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:25,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:25,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:49:25,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:25,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:49:25,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:25,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:49:25,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:25,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:49:25,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:26,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:49:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:26,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:26,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:26,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:49:26,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:26,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-26 23:49:26,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:26,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:26,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:49:26,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:49:26,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:49:26,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:49:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:26,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:26,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:26,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:49:26,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:26,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-10-26 23:49:26,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:26,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:26,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:49:26,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:49:26,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:27,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-26 23:49:27,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:27,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:27,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:27,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-26 23:49:27,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:27,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-26 23:49:27,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:27,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:27,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:49:27,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-26 23:49:27,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:27,806 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 168 proven. 94 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-10-26 23:49:27,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553466985] [2020-10-26 23:49:27,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:49:27,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:49:27,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366676029] [2020-10-26 23:49:27,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:49:27,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:49:27,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:49:27,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:49:27,809 INFO L87 Difference]: Start difference. First operand 6145 states and 8635 transitions. Second operand 8 states. [2020-10-26 23:49:39,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:49:39,860 INFO L93 Difference]: Finished difference Result 16133 states and 23852 transitions. [2020-10-26 23:49:39,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:49:39,861 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 446 [2020-10-26 23:49:39,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:49:39,914 INFO L225 Difference]: With dead ends: 16133 [2020-10-26 23:49:39,914 INFO L226 Difference]: Without dead ends: 10610 [2020-10-26 23:49:39,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:49:39,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10610 states. [2020-10-26 23:49:40,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10610 to 8969. [2020-10-26 23:49:40,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8969 states. [2020-10-26 23:49:40,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8969 states to 8969 states and 12032 transitions. [2020-10-26 23:49:40,239 INFO L78 Accepts]: Start accepts. Automaton has 8969 states and 12032 transitions. Word has length 446 [2020-10-26 23:49:40,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:49:40,240 INFO L481 AbstractCegarLoop]: Abstraction has 8969 states and 12032 transitions. [2020-10-26 23:49:40,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:49:40,240 INFO L276 IsEmpty]: Start isEmpty. Operand 8969 states and 12032 transitions. [2020-10-26 23:49:40,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2020-10-26 23:49:40,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:49:40,259 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:49:40,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:49:40,260 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:49:40,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:49:40,260 INFO L82 PathProgramCache]: Analyzing trace with hash 943947670, now seen corresponding path program 1 times [2020-10-26 23:49:40,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:49:40,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428829226] [2020-10-26 23:49:40,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:49:40,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:40,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:40,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:44,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:44,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 521 [2020-10-26 23:49:44,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:49:44,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3961 [2020-10-26 23:49:44,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:44,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:44,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:49:44,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-26 23:49:44,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:44,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:49:44,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:44,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:44,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:44,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:49:44,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:44,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:49:44,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:44,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:49:44,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:44,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:49:44,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:44,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:49:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:44,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:45,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:45,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:49:45,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:45,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 387 [2020-10-26 23:49:45,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:45,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:49:45,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:45,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:49:45,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:45,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:49:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:45,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:45,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:45,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:49:45,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:45,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-26 23:49:45,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:45,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:45,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:49:45,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:49:45,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:45,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-26 23:49:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:45,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:45,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:45,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-26 23:49:45,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:45,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-26 23:49:45,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:45,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:49:45,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-26 23:49:45,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:49:45,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:46,123 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 126 proven. 79 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-26 23:49:46,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428829226] [2020-10-26 23:49:46,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:49:46,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:49:46,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174796503] [2020-10-26 23:49:46,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:49:46,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:49:46,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:49:46,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:49:46,127 INFO L87 Difference]: Start difference. First operand 8969 states and 12032 transitions. Second operand 7 states. [2020-10-26 23:49:59,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:49:59,797 INFO L93 Difference]: Finished difference Result 18629 states and 25376 transitions. [2020-10-26 23:49:59,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:49:59,806 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 505 [2020-10-26 23:49:59,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:49:59,850 INFO L225 Difference]: With dead ends: 18629 [2020-10-26 23:49:59,851 INFO L226 Difference]: Without dead ends: 10282 [2020-10-26 23:49:59,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:49:59,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10282 states. [2020-10-26 23:50:00,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10282 to 10230. [2020-10-26 23:50:00,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10230 states. [2020-10-26 23:50:00,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10230 states to 10230 states and 13464 transitions. [2020-10-26 23:50:00,228 INFO L78 Accepts]: Start accepts. Automaton has 10230 states and 13464 transitions. Word has length 505 [2020-10-26 23:50:00,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:50:00,230 INFO L481 AbstractCegarLoop]: Abstraction has 10230 states and 13464 transitions. [2020-10-26 23:50:00,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:50:00,230 INFO L276 IsEmpty]: Start isEmpty. Operand 10230 states and 13464 transitions. [2020-10-26 23:50:00,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2020-10-26 23:50:00,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:50:00,245 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:50:00,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:50:00,245 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:50:00,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:50:00,246 INFO L82 PathProgramCache]: Analyzing trace with hash 938953614, now seen corresponding path program 1 times [2020-10-26 23:50:00,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:50:00,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223005266] [2020-10-26 23:50:00,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:50:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:00,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:01,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:03,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:03,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 533 [2020-10-26 23:50:03,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:50:03,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2969 [2020-10-26 23:50:03,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:03,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:50:03,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-26 23:50:03,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-26 23:50:03,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:03,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:50:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:03,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:03,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:03,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:50:03,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:03,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:50:03,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:03,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:50:03,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:03,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:50:03,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:03,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:50:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:03,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:03,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:03,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:50:03,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:03,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-26 23:50:03,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:03,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:50:03,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:03,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-26 23:50:03,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:04,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:50:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:04,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:04,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:04,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:50:04,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:04,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-26 23:50:04,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:04,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:50:04,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:50:04,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:50:04,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:04,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-10-26 23:50:04,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:04,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:04,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:04,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-26 23:50:04,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:04,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-26 23:50:04,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:04,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:50:04,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-26 23:50:04,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:50:04,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:04,651 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 126 proven. 79 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-26 23:50:04,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223005266] [2020-10-26 23:50:04,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:50:04,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:50:04,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195686118] [2020-10-26 23:50:04,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:50:04,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:50:04,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:50:04,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:50:04,654 INFO L87 Difference]: Start difference. First operand 10230 states and 13464 transitions. Second operand 7 states. [2020-10-26 23:50:16,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:50:16,181 INFO L93 Difference]: Finished difference Result 22131 states and 29905 transitions. [2020-10-26 23:50:16,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:50:16,183 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 517 [2020-10-26 23:50:16,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:50:16,251 INFO L225 Difference]: With dead ends: 22131 [2020-10-26 23:50:16,252 INFO L226 Difference]: Without dead ends: 12523 [2020-10-26 23:50:16,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:50:16,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12523 states. [2020-10-26 23:50:16,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12523 to 12473. [2020-10-26 23:50:16,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12473 states. [2020-10-26 23:50:16,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12473 states to 12473 states and 16117 transitions. [2020-10-26 23:50:16,631 INFO L78 Accepts]: Start accepts. Automaton has 12473 states and 16117 transitions. Word has length 517 [2020-10-26 23:50:16,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:50:16,632 INFO L481 AbstractCegarLoop]: Abstraction has 12473 states and 16117 transitions. [2020-10-26 23:50:16,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:50:16,633 INFO L276 IsEmpty]: Start isEmpty. Operand 12473 states and 16117 transitions. [2020-10-26 23:50:16,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2020-10-26 23:50:16,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:50:16,645 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:50:16,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:50:16,646 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:50:16,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:50:16,647 INFO L82 PathProgramCache]: Analyzing trace with hash 369199481, now seen corresponding path program 1 times [2020-10-26 23:50:16,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:50:16,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602117751] [2020-10-26 23:50:16,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:50:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:17,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:17,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:17,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:18,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:20,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:21,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:21,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 544 [2020-10-26 23:50:21,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:50:21,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-26 23:50:21,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:21,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:50:21,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:50:21,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 285 [2020-10-26 23:50:21,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:22,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:50:22,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:22,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:22,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:22,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:50:22,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:22,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:50:22,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:22,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:50:22,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:22,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:50:22,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:22,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:50:22,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:22,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:22,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:22,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:50:22,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:22,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 23:50:22,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:22,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:50:22,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:22,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 23:50:22,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:22,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:50:22,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:22,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:22,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:22,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:22,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:50:22,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:50:22,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-10-26 23:50:22,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:22,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:50:22,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:50:22,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:50:22,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:22,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-26 23:50:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:22,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:22,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:22,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:50:22,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:22,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-26 23:50:22,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:22,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:50:22,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:50:22,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:50:22,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:22,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-26 23:50:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:23,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:23,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:23,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-26 23:50:23,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:23,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-26 23:50:23,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:23,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:50:23,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-26 23:50:23,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:50:23,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:23,363 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 237 proven. 206 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2020-10-26 23:50:23,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602117751] [2020-10-26 23:50:23,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:50:23,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:50:23,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888206139] [2020-10-26 23:50:23,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:50:23,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:50:23,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:50:23,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:50:23,366 INFO L87 Difference]: Start difference. First operand 12473 states and 16117 transitions. Second operand 7 states. [2020-10-26 23:50:43,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:50:43,649 INFO L93 Difference]: Finished difference Result 30869 states and 40222 transitions. [2020-10-26 23:50:43,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:50:43,653 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 526 [2020-10-26 23:50:43,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:50:43,713 INFO L225 Difference]: With dead ends: 30869 [2020-10-26 23:50:43,713 INFO L226 Difference]: Without dead ends: 16148 [2020-10-26 23:50:43,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:50:43,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16148 states. [2020-10-26 23:50:44,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16148 to 14597. [2020-10-26 23:50:44,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14597 states. [2020-10-26 23:50:44,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14597 states to 14597 states and 17764 transitions. [2020-10-26 23:50:44,120 INFO L78 Accepts]: Start accepts. Automaton has 14597 states and 17764 transitions. Word has length 526 [2020-10-26 23:50:44,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:50:44,121 INFO L481 AbstractCegarLoop]: Abstraction has 14597 states and 17764 transitions. [2020-10-26 23:50:44,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:50:44,121 INFO L276 IsEmpty]: Start isEmpty. Operand 14597 states and 17764 transitions. [2020-10-26 23:50:44,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2020-10-26 23:50:44,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:50:44,136 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 23:50:44,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:50:44,136 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:50:44,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:50:44,137 INFO L82 PathProgramCache]: Analyzing trace with hash 752839309, now seen corresponding path program 1 times [2020-10-26 23:50:44,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:50:44,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242024697] [2020-10-26 23:50:44,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:50:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:44,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:45,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:45,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 564 [2020-10-26 23:50:45,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:45,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1043 [2020-10-26 23:50:45,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:45,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:50:45,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:50:45,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-26 23:50:45,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:45,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:50:45,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:45,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:45,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:45,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:50:45,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:45,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:50:45,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:45,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:50:45,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:45,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:50:45,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:45,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:50:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:45,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:45,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:45,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:50:45,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:45,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-26 23:50:45,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:45,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:50:45,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:45,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:50:45,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:45,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:50:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:45,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:45,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:45,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:50:45,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:45,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-26 23:50:45,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:45,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:50:45,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:45,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:50:45,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:45,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:50:46,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:46,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:46,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:46,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-26 23:50:46,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:46,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-26 23:50:46,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:46,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:50:46,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:50:46,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-26 23:50:46,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:46,532 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 283 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:50:46,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1242024697] [2020-10-26 23:50:46,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:50:46,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:50:46,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348587550] [2020-10-26 23:50:46,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:50:46,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:50:46,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:50:46,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:50:46,534 INFO L87 Difference]: Start difference. First operand 14597 states and 17764 transitions. Second operand 7 states. [2020-10-26 23:50:58,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:50:58,368 INFO L93 Difference]: Finished difference Result 33535 states and 41751 transitions. [2020-10-26 23:50:58,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:50:58,371 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 548 [2020-10-26 23:50:58,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:50:58,441 INFO L225 Difference]: With dead ends: 33535 [2020-10-26 23:50:58,441 INFO L226 Difference]: Without dead ends: 19560 [2020-10-26 23:50:58,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 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 23:50:58,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19560 states. [2020-10-26 23:50:58,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19560 to 17678. [2020-10-26 23:50:58,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17678 states. [2020-10-26 23:50:58,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17678 states to 17678 states and 21767 transitions. [2020-10-26 23:50:58,914 INFO L78 Accepts]: Start accepts. Automaton has 17678 states and 21767 transitions. Word has length 548 [2020-10-26 23:50:58,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:50:58,915 INFO L481 AbstractCegarLoop]: Abstraction has 17678 states and 21767 transitions. [2020-10-26 23:50:58,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:50:58,916 INFO L276 IsEmpty]: Start isEmpty. Operand 17678 states and 21767 transitions. [2020-10-26 23:50:58,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2020-10-26 23:50:58,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:50:58,933 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:50:58,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:50:58,934 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:50:58,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:50:58,934 INFO L82 PathProgramCache]: Analyzing trace with hash -2039352452, now seen corresponding path program 1 times [2020-10-26 23:50:58,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:50:58,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917625135] [2020-10-26 23:50:58,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:50:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:59,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:59,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:01,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:03,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:03,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 635 [2020-10-26 23:51:03,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:51:03,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4095 [2020-10-26 23:51:03,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:03,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:51:03,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:51:03,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-26 23:51:03,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:03,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:51:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:03,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:03,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:03,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:51:03,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:03,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:51:03,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:03,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:51:03,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:03,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:51:03,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:03,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:51:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:03,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:03,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:03,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:51:03,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:03,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-26 23:51:03,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:03,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:51:03,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:03,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:51:03,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:03,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:51:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:03,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:03,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:03,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:51:03,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:03,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-26 23:51:03,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:03,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:51:03,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:03,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:51:03,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:03,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:51:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:03,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:03,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:03,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-26 23:51:03,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:03,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-26 23:51:03,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:03,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:51:03,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:51:03,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-26 23:51:03,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:03,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2020-10-26 23:51:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:04,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:04,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:04,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-26 23:51:04,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:04,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 23:51:04,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:04,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:51:04,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-26 23:51:04,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:51:04,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:04,472 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 259 proven. 95 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2020-10-26 23:51:04,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917625135] [2020-10-26 23:51:04,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:51:04,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:51:04,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529217284] [2020-10-26 23:51:04,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:51:04,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:51:04,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:51:04,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:51:04,476 INFO L87 Difference]: Start difference. First operand 17678 states and 21767 transitions. Second operand 7 states.