/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:57:56,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:57:56,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:57:56,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:57:56,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:57:56,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:57:56,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:57:56,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:57:56,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:57:56,371 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:57:56,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:57:56,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:57:56,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:57:56,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:57:56,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:57:56,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:57:56,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:57:56,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:57:56,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:57:56,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:57:56,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:57:56,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:57:56,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:57:56,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:57:56,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:57:56,428 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:57:56,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:57:56,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:57:56,430 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:57:56,431 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:57:56,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:57:56,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:57:56,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:57:56,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:57:56,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:57:56,436 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:57:56,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:57:56,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:57:56,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:57:56,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:57:56,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:57:56,443 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 04:57:56,499 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:57:56,499 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:57:56,501 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:57:56,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:57:56,503 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:57:56,503 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:57:56,503 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:57:56,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:57:56,504 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:57:56,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:57:56,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:57:56,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:57:56,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:57:56,506 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:57:56,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:57:56,506 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:57:56,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:57:56,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:57:56,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:57:56,507 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:57:56,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:57:56,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:57:56,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:57:56,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:57:56,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:57:56,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:57:56,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:57:56,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:57:56,510 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:57:56,510 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:57:56,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:57:56,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:57:56,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:57:56,973 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:57:56,974 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:57:56,975 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label37.c [2020-10-29 04:57:57,084 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d93d916ff/74840ac46e9e4aefae67cb81e56c9e60/FLAG60143ddae [2020-10-29 04:57:58,042 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:57:58,048 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label37.c [2020-10-29 04:57:58,072 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d93d916ff/74840ac46e9e4aefae67cb81e56c9e60/FLAG60143ddae [2020-10-29 04:57:58,142 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d93d916ff/74840ac46e9e4aefae67cb81e56c9e60 [2020-10-29 04:57:58,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:57:58,152 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:57:58,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:57:58,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:57:58,159 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:57:58,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:57:58" (1/1) ... [2020-10-29 04:57:58,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@779d7891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:58, skipping insertion in model container [2020-10-29 04:57:58,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:57:58" (1/1) ... [2020-10-29 04:57:58,173 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:57:58,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:57:58,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:57:58,946 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:57:59,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:57:59,221 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:57:59,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:59 WrapperNode [2020-10-29 04:57:59,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:57:59,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:57:59,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:57:59,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:57:59,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:59" (1/1) ... [2020-10-29 04:57:59,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:59" (1/1) ... [2020-10-29 04:57:59,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:59" (1/1) ... [2020-10-29 04:57:59,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:59" (1/1) ... [2020-10-29 04:57:59,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:59" (1/1) ... [2020-10-29 04:57:59,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:59" (1/1) ... [2020-10-29 04:57:59,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:59" (1/1) ... [2020-10-29 04:57:59,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:57:59,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:57:59,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:57:59,464 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:57:59,465 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:57:59,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:57:59,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:57:59,557 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:57:59,558 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 04:57:59,558 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:57:59,558 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 04:57:59,558 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:57:59,558 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:57:59,559 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:57:59,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:57:59,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 04:57:59,559 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 04:57:59,559 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:57:59,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:57:59,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:57:59,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:57:59,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:57:59,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:57:59,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:58:01,589 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:58:01,589 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 04:58:01,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:58:01 BoogieIcfgContainer [2020-10-29 04:58:01,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:58:01,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:58:01,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:58:01,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:58:01,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:57:58" (1/3) ... [2020-10-29 04:58:01,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e50701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:58:01, skipping insertion in model container [2020-10-29 04:58:01,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:59" (2/3) ... [2020-10-29 04:58:01,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e50701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:58:01, skipping insertion in model container [2020-10-29 04:58:01,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:58:01" (3/3) ... [2020-10-29 04:58:01,601 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label37.c [2020-10-29 04:58:01,616 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:58:01,622 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:58:01,638 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:58:01,670 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:58:01,670 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:58:01,670 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:58:01,671 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:58:01,671 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:58:01,671 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:58:01,671 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:58:01,671 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:58:01,697 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-29 04:58:01,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-29 04:58:01,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:58:01,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:58:01,716 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:58:01,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:58:01,723 INFO L82 PathProgramCache]: Analyzing trace with hash 2014444224, now seen corresponding path program 1 times [2020-10-29 04:58:01,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:58:01,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39148317] [2020-10-29 04:58:01,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:58:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:02,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:02,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:06,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:06,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-29 04:58:06,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:58:06,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4441 [2020-10-29 04:58:06,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:06,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:06,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:58:06,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:58:06,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-29 04:58:06,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 04:58:07,169 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:58:07,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:58:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:07,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:07,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:07,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:58:07,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:07,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 04:58:07,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:07,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:07,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:58:07,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:07,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:58:07,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:58:07,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:58:07,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39148317] [2020-10-29 04:58:07,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:58:07,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 04:58:07,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684738862] [2020-10-29 04:58:07,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:58:07,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:58:07,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:58:07,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:58:07,328 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-29 04:58:07,575 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:58:11,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:58:11,460 INFO L93 Difference]: Finished difference Result 863 states and 1524 transitions. [2020-10-29 04:58:11,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:58:11,462 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2020-10-29 04:58:11,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:58:11,483 INFO L225 Difference]: With dead ends: 863 [2020-10-29 04:58:11,483 INFO L226 Difference]: Without dead ends: 484 [2020-10-29 04:58:11,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:58:11,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-10-29 04:58:11,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 466. [2020-10-29 04:58:11,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-10-29 04:58:11,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 744 transitions. [2020-10-29 04:58:11,633 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 744 transitions. Word has length 156 [2020-10-29 04:58:11,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:58:11,636 INFO L481 AbstractCegarLoop]: Abstraction has 466 states and 744 transitions. [2020-10-29 04:58:11,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:58:11,636 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 744 transitions. [2020-10-29 04:58:11,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-29 04:58:11,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:58:11,652 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 04:58:11,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:58:11,652 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:58:11,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:58:11,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1583847055, now seen corresponding path program 1 times [2020-10-29 04:58:11,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:58:11,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761275558] [2020-10-29 04:58:11,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:58:11,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:11,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:12,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:14,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:14,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:14,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-29 04:58:14,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:58:14,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2814 [2020-10-29 04:58:14,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:14,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:14,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:58:14,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 04:58:14,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 04:58:14,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:58:14,964 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:58:14,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:58:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:14,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:14,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:14,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:58:14,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:14,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 04:58:14,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:14,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:14,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:14,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:14,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:14,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:58:15,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:58:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:15,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:15,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:15,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 04:58:15,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:15,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 04:58:15,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:15,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:15,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:58:15,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:15,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:58:15,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:58:15,217 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:58:15,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761275558] [2020-10-29 04:58:15,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:58:15,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:58:15,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639751983] [2020-10-29 04:58:15,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:58:15,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:58:15,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:58:15,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:58:15,223 INFO L87 Difference]: Start difference. First operand 466 states and 744 transitions. Second operand 5 states. [2020-10-29 04:58:15,608 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:58:19,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:58:19,095 INFO L93 Difference]: Finished difference Result 1357 states and 2199 transitions. [2020-10-29 04:58:19,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:58:19,096 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-29 04:58:19,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:58:19,112 INFO L225 Difference]: With dead ends: 1357 [2020-10-29 04:58:19,112 INFO L226 Difference]: Without dead ends: 897 [2020-10-29 04:58:19,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:58:19,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2020-10-29 04:58:19,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 888. [2020-10-29 04:58:19,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2020-10-29 04:58:19,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1358 transitions. [2020-10-29 04:58:19,170 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1358 transitions. Word has length 165 [2020-10-29 04:58:19,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:58:19,171 INFO L481 AbstractCegarLoop]: Abstraction has 888 states and 1358 transitions. [2020-10-29 04:58:19,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:58:19,171 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1358 transitions. [2020-10-29 04:58:19,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-29 04:58:19,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:58:19,175 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 04:58:19,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:58:19,176 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:58:19,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:58:19,176 INFO L82 PathProgramCache]: Analyzing trace with hash 312484909, now seen corresponding path program 1 times [2020-10-29 04:58:19,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:58:19,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463336125] [2020-10-29 04:58:19,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:58:19,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:19,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:19,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:21,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:24,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:24,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-29 04:58:24,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:58:24,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4927 [2020-10-29 04:58:24,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:24,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:24,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:58:24,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:58:24,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 04:58:24,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:58:24,657 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:58:24,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:58:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:24,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:24,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:24,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:58:24,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:24,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 04:58:24,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:24,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:24,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:24,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:24,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:24,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:24,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:58:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:24,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:24,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:24,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 04:58:24,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:24,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 04:58:24,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:24,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:24,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:58:24,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:24,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:58:24,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:24,926 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:58:24,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463336125] [2020-10-29 04:58:24,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:58:24,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:58:24,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884076308] [2020-10-29 04:58:24,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:58:24,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:58:24,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:58:24,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:58:24,929 INFO L87 Difference]: Start difference. First operand 888 states and 1358 transitions. Second operand 5 states. [2020-10-29 04:58:25,206 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:58:28,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:58:28,464 INFO L93 Difference]: Finished difference Result 2623 states and 4082 transitions. [2020-10-29 04:58:28,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:58:28,465 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-29 04:58:28,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:58:28,477 INFO L225 Difference]: With dead ends: 2623 [2020-10-29 04:58:28,478 INFO L226 Difference]: Without dead ends: 1741 [2020-10-29 04:58:28,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:58:28,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2020-10-29 04:58:28,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1735. [2020-10-29 04:58:28,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1735 states. [2020-10-29 04:58:28,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1735 states to 1735 states and 2526 transitions. [2020-10-29 04:58:28,554 INFO L78 Accepts]: Start accepts. Automaton has 1735 states and 2526 transitions. Word has length 167 [2020-10-29 04:58:28,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:58:28,555 INFO L481 AbstractCegarLoop]: Abstraction has 1735 states and 2526 transitions. [2020-10-29 04:58:28,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:58:28,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1735 states and 2526 transitions. [2020-10-29 04:58:28,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-29 04:58:28,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:58:28,561 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:58:28,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:58:28,562 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:58:28,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:58:28,563 INFO L82 PathProgramCache]: Analyzing trace with hash 815190893, now seen corresponding path program 1 times [2020-10-29 04:58:28,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:58:28,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080720460] [2020-10-29 04:58:28,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:58:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:28,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:29,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:30,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:30,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-29 04:58:30,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:58:30,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2333 [2020-10-29 04:58:30,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:30,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:30,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:58:30,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:58:30,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-29 04:58:30,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:58:31,292 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:58:31,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:58:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:31,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:31,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:31,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:58:31,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:31,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 04:58:31,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:31,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:31,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:58:31,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:31,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:58:31,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:58:31,454 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:58:31,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:58:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:31,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:31,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:31,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:31,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 04:58:31,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:58:31,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-29 04:58:31,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:31,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:31,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:58:31,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:58:31,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 04:58:31,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:58:31,948 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 04:58:31,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080720460] [2020-10-29 04:58:31,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:58:31,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:58:31,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141692011] [2020-10-29 04:58:31,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:58:31,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:58:31,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:58:31,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:58:31,963 INFO L87 Difference]: Start difference. First operand 1735 states and 2526 transitions. Second operand 8 states. [2020-10-29 04:58:32,218 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:58:32,710 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:58:33,229 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:58:37,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:58:37,762 INFO L93 Difference]: Finished difference Result 6876 states and 10447 transitions. [2020-10-29 04:58:37,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 04:58:37,763 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 183 [2020-10-29 04:58:37,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:58:37,800 INFO L225 Difference]: With dead ends: 6876 [2020-10-29 04:58:37,800 INFO L226 Difference]: Without dead ends: 5147 [2020-10-29 04:58:37,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-29 04:58:37,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5147 states. [2020-10-29 04:58:38,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5147 to 5136. [2020-10-29 04:58:38,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5136 states. [2020-10-29 04:58:38,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5136 states to 5136 states and 7349 transitions. [2020-10-29 04:58:38,037 INFO L78 Accepts]: Start accepts. Automaton has 5136 states and 7349 transitions. Word has length 183 [2020-10-29 04:58:38,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:58:38,038 INFO L481 AbstractCegarLoop]: Abstraction has 5136 states and 7349 transitions. [2020-10-29 04:58:38,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:58:38,038 INFO L276 IsEmpty]: Start isEmpty. Operand 5136 states and 7349 transitions. [2020-10-29 04:58:38,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-29 04:58:38,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:58:38,054 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 04:58:38,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 04:58:38,054 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:58:38,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:58:38,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1529008990, now seen corresponding path program 1 times [2020-10-29 04:58:38,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:58:38,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566055220] [2020-10-29 04:58:38,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:58:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:38,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:38,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:38,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:40,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:43,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:43,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-29 04:58:43,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:58:43,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 04:58:43,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:43,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:43,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:58:43,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-29 04:58:43,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-29 04:58:43,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:43,548 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:58:43,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:58:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:43,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:43,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:43,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:58:43,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:43,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:58:43,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:43,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:43,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:43,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:43,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:43,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:43,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:58:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:43,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:43,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:43,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:58:43,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:43,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 04:58:43,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:43,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:43,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:43,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:43,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:43,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:43,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:58:43,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:43,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:43,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:43,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 04:58:43,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:43,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 04:58:43,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:43,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:43,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:58:43,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:43,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 04:58:43,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:43,910 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-29 04:58:43,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566055220] [2020-10-29 04:58:43,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:58:43,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:58:43,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907665525] [2020-10-29 04:58:43,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:58:43,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:58:43,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:58:43,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:58:43,913 INFO L87 Difference]: Start difference. First operand 5136 states and 7349 transitions. Second operand 5 states. [2020-10-29 04:58:44,347 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:58:48,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:58:48,005 INFO L93 Difference]: Finished difference Result 14690 states and 21587 transitions. [2020-10-29 04:58:48,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:58:48,010 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 201 [2020-10-29 04:58:48,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:58:48,072 INFO L225 Difference]: With dead ends: 14690 [2020-10-29 04:58:48,073 INFO L226 Difference]: Without dead ends: 9560 [2020-10-29 04:58:48,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:58:48,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9560 states. [2020-10-29 04:58:48,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9560 to 9549. [2020-10-29 04:58:48,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9549 states. [2020-10-29 04:58:48,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9549 states to 9549 states and 13842 transitions. [2020-10-29 04:58:48,423 INFO L78 Accepts]: Start accepts. Automaton has 9549 states and 13842 transitions. Word has length 201 [2020-10-29 04:58:48,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:58:48,424 INFO L481 AbstractCegarLoop]: Abstraction has 9549 states and 13842 transitions. [2020-10-29 04:58:48,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:58:48,424 INFO L276 IsEmpty]: Start isEmpty. Operand 9549 states and 13842 transitions. [2020-10-29 04:58:48,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-29 04:58:48,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:58:48,452 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 04:58:48,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 04:58:48,453 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:58:48,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:58:48,453 INFO L82 PathProgramCache]: Analyzing trace with hash -2047388280, now seen corresponding path program 1 times [2020-10-29 04:58:48,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:58:48,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285139284] [2020-10-29 04:58:48,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:58:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:48,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:48,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:48,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:48,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:48,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:49,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:50,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:51,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:51,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-29 04:58:51,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 04:58:51,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3282 [2020-10-29 04:58:51,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:51,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:51,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:58:51,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-29 04:58:51,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-29 04:58:51,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:52,091 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:58:52,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:58:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:52,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:52,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:52,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:58:52,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:52,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:58:52,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:52,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:52,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:52,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:52,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:52,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:52,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:58:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:52,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:52,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:52,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:58:52,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:52,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:58:52,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:52,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:52,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:52,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:52,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:52,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:52,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:58:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:52,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:52,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:52,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:52,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:58:52,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:58:52,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 04:58:52,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:52,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:52,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:58:52,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:52,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:58:52,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:52,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:58:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:52,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:52,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:52,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:52,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 04:58:52,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:58:52,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 04:58:52,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:52,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:52,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:58:52,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:52,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 04:58:52,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:52,453 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 51 proven. 5 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-29 04:58:52,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285139284] [2020-10-29 04:58:52,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:58:52,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:58:52,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607750323] [2020-10-29 04:58:52,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:58:52,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:58:52,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:58:52,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:58:52,456 INFO L87 Difference]: Start difference. First operand 9549 states and 13842 transitions. Second operand 5 states. [2020-10-29 04:58:52,992 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:58:56,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:58:56,141 INFO L93 Difference]: Finished difference Result 25174 states and 36658 transitions. [2020-10-29 04:58:56,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:58:56,142 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2020-10-29 04:58:56,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:58:56,195 INFO L225 Difference]: With dead ends: 25174 [2020-10-29 04:58:56,196 INFO L226 Difference]: Without dead ends: 9552 [2020-10-29 04:58:56,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:58:56,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9552 states. [2020-10-29 04:58:56,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9552 to 9548. [2020-10-29 04:58:56,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9548 states. [2020-10-29 04:58:56,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9548 states to 9548 states and 13839 transitions. [2020-10-29 04:58:56,584 INFO L78 Accepts]: Start accepts. Automaton has 9548 states and 13839 transitions. Word has length 214 [2020-10-29 04:58:56,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:58:56,584 INFO L481 AbstractCegarLoop]: Abstraction has 9548 states and 13839 transitions. [2020-10-29 04:58:56,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:58:56,584 INFO L276 IsEmpty]: Start isEmpty. Operand 9548 states and 13839 transitions. [2020-10-29 04:58:56,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-29 04:58:56,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:58:56,620 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:58:56,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 04:58:56,621 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:58:56,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:58:56,622 INFO L82 PathProgramCache]: Analyzing trace with hash -136477621, now seen corresponding path program 1 times [2020-10-29 04:58:56,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:58:56,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074765543] [2020-10-29 04:58:56,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:58:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:56,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:56,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:56,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:57,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:58,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:01,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:01,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 04:59:01,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:59:01,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 04:59:01,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:01,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:01,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:59:01,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 04:59:01,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 04:59:01,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:02,070 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:02,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:02,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:02,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:02,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:02,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:02,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:59:02,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:02,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:02,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:02,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:02,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:02,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:02,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:02,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:02,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:02,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:59:02,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:02,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 04:59:02,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:02,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:02,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:02,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:02,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 04:59:02,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:02,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:59:02,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:02,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:02,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:02,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 04:59:02,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:02,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 04:59:02,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:02,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:02,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:02,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:59:02,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 04:59:02,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:02,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 04:59:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:02,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:02,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:02,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 04:59:02,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:02,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-29 04:59:02,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:02,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:02,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:02,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:59:02,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 04:59:02,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:59:02,649 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 97 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-29 04:59:02,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074765543] [2020-10-29 04:59:02,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:02,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:59:02,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785922983] [2020-10-29 04:59:02,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:59:02,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:02,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:59:02,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:59:02,653 INFO L87 Difference]: Start difference. First operand 9548 states and 13839 transitions. Second operand 7 states. [2020-10-29 04:59:02,892 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 04:59:04,319 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:59:06,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:06,361 INFO L93 Difference]: Finished difference Result 24890 states and 36806 transitions. [2020-10-29 04:59:06,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:59:06,362 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 228 [2020-10-29 04:59:06,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:06,433 INFO L225 Difference]: With dead ends: 24890 [2020-10-29 04:59:06,434 INFO L226 Difference]: Without dead ends: 15348 [2020-10-29 04:59:06,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:59:06,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15348 states. [2020-10-29 04:59:06,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15348 to 15303. [2020-10-29 04:59:06,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15303 states. [2020-10-29 04:59:06,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15303 states to 15303 states and 21843 transitions. [2020-10-29 04:59:06,949 INFO L78 Accepts]: Start accepts. Automaton has 15303 states and 21843 transitions. Word has length 228 [2020-10-29 04:59:06,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:06,949 INFO L481 AbstractCegarLoop]: Abstraction has 15303 states and 21843 transitions. [2020-10-29 04:59:06,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:59:06,949 INFO L276 IsEmpty]: Start isEmpty. Operand 15303 states and 21843 transitions. [2020-10-29 04:59:06,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-29 04:59:06,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:06,991 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-10-29 04:59:06,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 04:59:06,991 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:06,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:06,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1027385101, now seen corresponding path program 1 times [2020-10-29 04:59:06,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:06,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230335660] [2020-10-29 04:59:06,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:07,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:07,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:07,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:09,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:12,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:12,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-29 04:59:12,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:59:12,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-29 04:59:12,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:12,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:12,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:59:12,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 04:59:12,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 04:59:12,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:12,376 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:12,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:12,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:12,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:12,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:12,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:12,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:12,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:59:12,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:12,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:12,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:12,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:12,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:12,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:12,585 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:59:12,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:12,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:12,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:12,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:59:12,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:12,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 04:59:12,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:12,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:12,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:12,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:12,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 04:59:12,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:12,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:59:12,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:12,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:12,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:12,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:12,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:59:12,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:59:12,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 04:59:12,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:12,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:12,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:12,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:59:12,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 04:59:12,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 04:59:12,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:59:12,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:12,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:12,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:12,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:12,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 04:59:12,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:59:12,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-29 04:59:12,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:12,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:12,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:12,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:59:12,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 04:59:12,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:12,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 04:59:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:12,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:12,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:12,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 04:59:12,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:12,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 04:59:12,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:12,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:12,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:12,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:59:12,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 04:59:12,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:13,002 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 114 proven. 13 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-29 04:59:13,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230335660] [2020-10-29 04:59:13,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:13,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:59:13,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641268115] [2020-10-29 04:59:13,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:59:13,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:13,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:59:13,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:59:13,005 INFO L87 Difference]: Start difference. First operand 15303 states and 21843 transitions. Second operand 8 states. [2020-10-29 04:59:13,430 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:59:14,354 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:59:19,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:19,509 INFO L93 Difference]: Finished difference Result 43894 states and 69306 transitions. [2020-10-29 04:59:19,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:59:19,509 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 233 [2020-10-29 04:59:19,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:19,683 INFO L225 Difference]: With dead ends: 43894 [2020-10-29 04:59:19,683 INFO L226 Difference]: Without dead ends: 28597 [2020-10-29 04:59:19,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-29 04:59:19,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28597 states. [2020-10-29 04:59:20,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28597 to 28472. [2020-10-29 04:59:20,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28472 states. [2020-10-29 04:59:21,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28472 states to 28472 states and 43067 transitions. [2020-10-29 04:59:21,146 INFO L78 Accepts]: Start accepts. Automaton has 28472 states and 43067 transitions. Word has length 233 [2020-10-29 04:59:21,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:21,147 INFO L481 AbstractCegarLoop]: Abstraction has 28472 states and 43067 transitions. [2020-10-29 04:59:21,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:59:21,147 INFO L276 IsEmpty]: Start isEmpty. Operand 28472 states and 43067 transitions. [2020-10-29 04:59:21,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-29 04:59:21,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:21,262 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 04:59:21,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 04:59:21,263 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:21,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:21,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1679483235, now seen corresponding path program 1 times [2020-10-29 04:59:21,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:21,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467577106] [2020-10-29 04:59:21,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:21,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:21,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:23,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:25,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:25,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-29 04:59:25,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:59:25,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4288 [2020-10-29 04:59:25,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:25,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:25,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:59:25,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:59:25,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 04:59:25,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:26,031 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:26,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:26,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:26,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:26,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:26,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:26,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:26,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 04:59:26,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:26,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:26,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:26,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:26,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:59:26,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:26,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:26,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:26,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:26,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:26,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 04:59:26,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:59:26,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-29 04:59:26,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:26,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:26,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:26,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:59:26,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-29 04:59:26,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:26,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 04:59:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:26,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:26,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:26,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 04:59:26,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:26,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 04:59:26,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:26,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:26,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:26,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:59:26,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 04:59:26,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:26,549 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 70 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:59:26,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467577106] [2020-10-29 04:59:26,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:26,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:59:26,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474689249] [2020-10-29 04:59:26,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:59:26,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:26,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:59:26,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:59:26,552 INFO L87 Difference]: Start difference. First operand 28472 states and 43067 transitions. Second operand 9 states. [2020-10-29 04:59:26,807 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:59:27,588 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:59:30,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:30,698 INFO L93 Difference]: Finished difference Result 50648 states and 74960 transitions. [2020-10-29 04:59:30,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 04:59:30,698 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 231 [2020-10-29 04:59:30,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:30,789 INFO L225 Difference]: With dead ends: 50648 [2020-10-29 04:59:30,789 INFO L226 Difference]: Without dead ends: 22258 [2020-10-29 04:59:30,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-29 04:59:30,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22258 states. [2020-10-29 04:59:31,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22258 to 21960. [2020-10-29 04:59:31,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21960 states. [2020-10-29 04:59:31,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21960 states to 21960 states and 27117 transitions. [2020-10-29 04:59:31,457 INFO L78 Accepts]: Start accepts. Automaton has 21960 states and 27117 transitions. Word has length 231 [2020-10-29 04:59:31,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:31,457 INFO L481 AbstractCegarLoop]: Abstraction has 21960 states and 27117 transitions. [2020-10-29 04:59:31,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:59:31,458 INFO L276 IsEmpty]: Start isEmpty. Operand 21960 states and 27117 transitions. [2020-10-29 04:59:31,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-29 04:59:31,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:31,506 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:59:31,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 04:59:31,507 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:31,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:31,508 INFO L82 PathProgramCache]: Analyzing trace with hash -980938916, now seen corresponding path program 1 times [2020-10-29 04:59:31,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:31,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428362085] [2020-10-29 04:59:31,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:31,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:31,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:31,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:33,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:36,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:36,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-29 04:59:36,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:59:36,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-29 04:59:36,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:36,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:36,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:59:36,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:59:36,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 04:59:36,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:36,881 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:36,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:36,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:36,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:36,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:36,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:36,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 04:59:36,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:36,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:36,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:36,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:36,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:59:36,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:37,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:37,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:37,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:37,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:37,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:59:37,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:59:37,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 04:59:37,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:37,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:37,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:37,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:37,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 04:59:37,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:37,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:59:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:37,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:37,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:37,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 04:59:37,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:37,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 04:59:37,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:37,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:37,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:37,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:59:37,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 04:59:37,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:37,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 04:59:37,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:37,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:37,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:37,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 04:59:37,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:37,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 04:59:37,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:37,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:37,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:37,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 04:59:37,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:37,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:37,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 04:59:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:37,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:37,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:37,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 04:59:37,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:37,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 04:59:37,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:37,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:37,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:37,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 04:59:37,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:37,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:37,556 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 94 proven. 30 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-29 04:59:37,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428362085] [2020-10-29 04:59:37,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:37,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:59:37,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519339013] [2020-10-29 04:59:37,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:59:37,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:37,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:59:37,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:59:37,563 INFO L87 Difference]: Start difference. First operand 21960 states and 27117 transitions. Second operand 7 states. [2020-10-29 04:59:37,861 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:59:40,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:40,195 INFO L93 Difference]: Finished difference Result 40224 states and 49697 transitions. [2020-10-29 04:59:40,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:59:40,196 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 245 [2020-10-29 04:59:40,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:40,240 INFO L225 Difference]: With dead ends: 40224 [2020-10-29 04:59:40,240 INFO L226 Difference]: Without dead ends: 18270 [2020-10-29 04:59:40,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:59:40,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18270 states. [2020-10-29 04:59:40,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18270 to 18256. [2020-10-29 04:59:40,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18256 states. [2020-10-29 04:59:40,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18256 states to 18256 states and 22056 transitions. [2020-10-29 04:59:40,735 INFO L78 Accepts]: Start accepts. Automaton has 18256 states and 22056 transitions. Word has length 245 [2020-10-29 04:59:40,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:40,735 INFO L481 AbstractCegarLoop]: Abstraction has 18256 states and 22056 transitions. [2020-10-29 04:59:40,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:59:40,736 INFO L276 IsEmpty]: Start isEmpty. Operand 18256 states and 22056 transitions. [2020-10-29 04:59:40,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-29 04:59:40,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:40,771 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 04:59:40,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 04:59:40,771 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:40,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:40,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1845094787, now seen corresponding path program 1 times [2020-10-29 04:59:40,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:40,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126861746] [2020-10-29 04:59:40,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:40,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:41,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:41,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:45,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:45,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-29 04:59:45,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:59:45,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-29 04:59:45,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:45,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:45,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:59:45,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:59:45,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 04:59:45,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:46,150 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:46,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:46,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:46,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:46,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:46,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:46,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:46,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 04:59:46,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:46,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:46,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:46,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:46,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:59:46,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:46,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:46,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:46,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:46,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 04:59:46,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:46,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-29 04:59:46,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:46,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:46,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:46,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:59:46,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 04:59:46,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:46,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 04:59:46,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:46,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:46,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:46,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:59:46,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:46,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:59:46,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:46,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:46,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:46,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 04:59:46,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:46,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:46,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-29 04:59:46,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:46,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:46,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:46,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 04:59:46,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:46,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 04:59:46,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:46,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:46,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:46,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 04:59:46,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:46,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:46,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-29 04:59:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:46,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:46,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:46,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 04:59:46,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:46,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 04:59:46,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:46,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:46,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:46,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 04:59:46,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:46,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:47,076 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 121 proven. 39 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-29 04:59:47,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126861746] [2020-10-29 04:59:47,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:47,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:59:47,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136486722] [2020-10-29 04:59:47,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:59:47,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:47,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:59:47,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:59:47,078 INFO L87 Difference]: Start difference. First operand 18256 states and 22056 transitions. Second operand 7 states. [2020-10-29 04:59:47,333 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 04:59:50,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:50,567 INFO L93 Difference]: Finished difference Result 43060 states and 52677 transitions. [2020-10-29 04:59:50,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 04:59:50,567 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 291 [2020-10-29 04:59:50,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:50,641 INFO L225 Difference]: With dead ends: 43060 [2020-10-29 04:59:50,642 INFO L226 Difference]: Without dead ends: 24810 [2020-10-29 04:59:50,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:59:50,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24810 states. [2020-10-29 04:59:51,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24810 to 23501. [2020-10-29 04:59:51,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23501 states. [2020-10-29 04:59:51,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23501 states to 23501 states and 28683 transitions. [2020-10-29 04:59:51,293 INFO L78 Accepts]: Start accepts. Automaton has 23501 states and 28683 transitions. Word has length 291 [2020-10-29 04:59:51,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:51,294 INFO L481 AbstractCegarLoop]: Abstraction has 23501 states and 28683 transitions. [2020-10-29 04:59:51,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:59:51,294 INFO L276 IsEmpty]: Start isEmpty. Operand 23501 states and 28683 transitions. [2020-10-29 04:59:51,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-29 04:59:51,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:51,332 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:59:51,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 04:59:51,333 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:51,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:51,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1584152524, now seen corresponding path program 1 times [2020-10-29 04:59:51,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:51,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816157817] [2020-10-29 04:59:51,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:51,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:51,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:52,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:52,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:56,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:56,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-29 04:59:56,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:59:56,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 04:59:56,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:56,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:56,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:56,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 04:59:56,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 04:59:56,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:56,722 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:56,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:56,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:56,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:56,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:56,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:56,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:56,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:59:56,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:56,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:56,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:56,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:56,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:56,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:56,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:56,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:56,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:56,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:59:56,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:56,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 04:59:56,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:56,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:56,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:56,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:56,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 04:59:56,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:56,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:59:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:57,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:57,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:57,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 04:59:57,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:57,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-29 04:59:57,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:57,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:57,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:57,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:59:57,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 04:59:57,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:57,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-29 04:59:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:57,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:57,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:57,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 04:59:57,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:57,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 04:59:57,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:57,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:57,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:57,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 04:59:57,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:57,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:57,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-29 04:59:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:57,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:57,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:57,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 04:59:57,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:57,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 04:59:57,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:57,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:57,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:57,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 04:59:57,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:57,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:57,408 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 175 proven. 61 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-29 04:59:57,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816157817] [2020-10-29 04:59:57,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:57,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:59:57,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163688538] [2020-10-29 04:59:57,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:59:57,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:57,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:59:57,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:59:57,410 INFO L87 Difference]: Start difference. First operand 23501 states and 28683 transitions. Second operand 7 states. [2020-10-29 04:59:57,897 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:59:59,689 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:00:01,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:01,637 INFO L93 Difference]: Finished difference Result 39215 states and 50375 transitions. [2020-10-29 05:00:01,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:00:01,638 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 319 [2020-10-29 05:00:01,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:01,695 INFO L225 Difference]: With dead ends: 39215 [2020-10-29 05:00:01,695 INFO L226 Difference]: Without dead ends: 16138 [2020-10-29 05:00:01,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 05:00:01,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16138 states. [2020-10-29 05:00:02,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16138 to 15505. [2020-10-29 05:00:02,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15505 states. [2020-10-29 05:00:02,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15505 states to 15505 states and 18370 transitions. [2020-10-29 05:00:02,352 INFO L78 Accepts]: Start accepts. Automaton has 15505 states and 18370 transitions. Word has length 319 [2020-10-29 05:00:02,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:02,352 INFO L481 AbstractCegarLoop]: Abstraction has 15505 states and 18370 transitions. [2020-10-29 05:00:02,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:00:02,353 INFO L276 IsEmpty]: Start isEmpty. Operand 15505 states and 18370 transitions. [2020-10-29 05:00:02,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-29 05:00:02,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:02,375 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:00:02,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 05:00:02,375 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:02,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:02,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1332568605, now seen corresponding path program 1 times [2020-10-29 05:00:02,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:02,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514313856] [2020-10-29 05:00:02,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:02,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:02,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:02,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:07,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:07,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-29 05:00:07,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:00:07,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 05:00:07,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:07,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:07,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:07,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-29 05:00:07,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 05:00:07,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:07,718 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:07,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:07,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:07,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:07,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:07,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:07,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:07,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:00:07,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:07,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:07,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:07,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:07,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:07,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:07,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:00:07,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:07,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:07,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:07,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 05:00:07,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:07,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 05:00:07,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:07,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:07,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:07,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:07,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 05:00:07,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:07,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 05:00:07,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:07,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:08,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:08,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 05:00:08,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:08,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-29 05:00:08,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:08,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:08,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:08,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:08,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 05:00:08,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:08,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-29 05:00:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:08,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:08,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:08,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 05:00:08,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:08,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 05:00:08,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:08,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:08,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:08,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 05:00:08,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:08,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:08,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-29 05:00:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:08,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:08,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:08,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 05:00:08,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:08,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 05:00:08,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:08,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:08,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:08,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 05:00:08,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:08,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:08,546 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 197 proven. 61 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-29 05:00:08,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514313856] [2020-10-29 05:00:08,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:00:08,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:00:08,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962446222] [2020-10-29 05:00:08,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:00:08,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:00:08,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:00:08,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:00:08,548 INFO L87 Difference]: Start difference. First operand 15505 states and 18370 transitions. Second operand 8 states. [2020-10-29 05:00:09,100 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-29 05:00:09,576 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 05:00:11,176 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 05:00:15,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:15,050 INFO L93 Difference]: Finished difference Result 35870 states and 47663 transitions. [2020-10-29 05:00:15,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 05:00:15,051 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 330 [2020-10-29 05:00:15,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:15,144 INFO L225 Difference]: With dead ends: 35870 [2020-10-29 05:00:15,144 INFO L226 Difference]: Without dead ends: 20789 [2020-10-29 05:00:15,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2020-10-29 05:00:15,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20789 states. [2020-10-29 05:00:15,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20789 to 20165. [2020-10-29 05:00:15,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20165 states. [2020-10-29 05:00:15,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20165 states to 20165 states and 27060 transitions. [2020-10-29 05:00:15,989 INFO L78 Accepts]: Start accepts. Automaton has 20165 states and 27060 transitions. Word has length 330 [2020-10-29 05:00:15,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:15,990 INFO L481 AbstractCegarLoop]: Abstraction has 20165 states and 27060 transitions. [2020-10-29 05:00:15,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:00:15,990 INFO L276 IsEmpty]: Start isEmpty. Operand 20165 states and 27060 transitions. [2020-10-29 05:00:16,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-29 05:00:16,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:16,036 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 05:00:16,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 05:00:16,036 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:16,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:16,037 INFO L82 PathProgramCache]: Analyzing trace with hash 503511779, now seen corresponding path program 1 times [2020-10-29 05:00:16,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:16,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64967915] [2020-10-29 05:00:16,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:16,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:16,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:16,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:16,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:19,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:21,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:21,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 355 [2020-10-29 05:00:21,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 05:00:21,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 05:00:21,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:21,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:21,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 05:00:21,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-29 05:00:21,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 05:00:21,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:21,456 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:21,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:21,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:21,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:21,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:21,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:21,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:00:21,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:21,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:21,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:21,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:21,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:21,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:21,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:00:21,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:21,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:21,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:21,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 05:00:21,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:21,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:00:21,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:21,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:21,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:21,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:21,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:21,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:21,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 05:00:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:21,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:21,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:21,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:00:21,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:21,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 05:00:21,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:21,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:21,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:21,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:21,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 05:00:21,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:21,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 05:00:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:21,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:21,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:22,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:22,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 05:00:22,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:00:22,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-10-29 05:00:22,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:22,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:22,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:22,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:22,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 05:00:22,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:22,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-29 05:00:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:22,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:22,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:22,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 05:00:22,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:22,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 05:00:22,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:22,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:22,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:22,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:22,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 05:00:22,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:22,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-29 05:00:22,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:22,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:22,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:22,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 05:00:22,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:22,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 05:00:22,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:22,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:22,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:22,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:22,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 05:00:22,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:22,513 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 264 proven. 10 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-29 05:00:22,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64967915] [2020-10-29 05:00:22,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:00:22,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:00:22,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518478886] [2020-10-29 05:00:22,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:00:22,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:00:22,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:00:22,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:00:22,515 INFO L87 Difference]: Start difference. First operand 20165 states and 27060 transitions. Second operand 7 states. [2020-10-29 05:00:22,859 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:00:23,468 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:00:29,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:29,833 INFO L93 Difference]: Finished difference Result 74133 states and 112247 transitions. [2020-10-29 05:00:29,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:00:29,834 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 335 [2020-10-29 05:00:29,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:30,233 INFO L225 Difference]: With dead ends: 74133 [2020-10-29 05:00:30,233 INFO L226 Difference]: Without dead ends: 54568 [2020-10-29 05:00:30,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:00:30,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54568 states. [2020-10-29 05:00:33,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54568 to 51962. [2020-10-29 05:00:33,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51962 states. [2020-10-29 05:00:33,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51962 states to 51962 states and 71948 transitions. [2020-10-29 05:00:33,580 INFO L78 Accepts]: Start accepts. Automaton has 51962 states and 71948 transitions. Word has length 335 [2020-10-29 05:00:33,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:33,581 INFO L481 AbstractCegarLoop]: Abstraction has 51962 states and 71948 transitions. [2020-10-29 05:00:33,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:00:33,581 INFO L276 IsEmpty]: Start isEmpty. Operand 51962 states and 71948 transitions. [2020-10-29 05:00:33,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-29 05:00:33,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:33,696 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 05:00:33,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 05:00:33,696 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:33,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:33,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1053086108, now seen corresponding path program 1 times [2020-10-29 05:00:33,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:33,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525415080] [2020-10-29 05:00:33,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:33,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:33,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:34,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:34,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:38,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:38,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-29 05:00:38,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:00:38,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-29 05:00:38,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:38,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:38,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:38,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-29 05:00:38,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 05:00:38,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:39,233 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:39,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:39,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:39,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:39,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:39,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:39,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:00:39,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:39,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:39,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:39,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:39,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:39,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:39,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:00:39,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:39,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:39,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:39,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 05:00:39,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:39,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 05:00:39,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:39,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:39,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:39,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:39,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 05:00:39,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:39,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 05:00:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:39,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:39,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:39,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 05:00:39,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:39,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-29 05:00:39,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:39,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:39,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:39,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:39,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 05:00:39,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:39,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-29 05:00:39,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:39,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:39,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:39,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 05:00:39,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:39,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 05:00:39,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:39,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:39,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:39,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 05:00:39,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:39,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:39,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-29 05:00:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:39,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:39,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:39,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 05:00:39,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:39,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 05:00:39,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:39,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:39,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:39,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 05:00:39,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:39,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:39,812 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 213 proven. 61 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-29 05:00:39,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525415080] [2020-10-29 05:00:39,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:00:39,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:00:39,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037765991] [2020-10-29 05:00:39,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:00:39,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:00:39,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:00:39,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:00:39,815 INFO L87 Difference]: Start difference. First operand 51962 states and 71948 transitions. Second operand 7 states. [2020-10-29 05:00:40,062 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:00:42,341 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:00:44,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:44,863 INFO L93 Difference]: Finished difference Result 117508 states and 161017 transitions. [2020-10-29 05:00:44,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:00:44,864 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 338 [2020-10-29 05:00:44,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:45,254 INFO L225 Difference]: With dead ends: 117508 [2020-10-29 05:00:45,255 INFO L226 Difference]: Without dead ends: 66627 [2020-10-29 05:00:45,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:00:45,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66627 states. [2020-10-29 05:00:48,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66627 to 62559. [2020-10-29 05:00:48,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62559 states. [2020-10-29 05:00:48,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62559 states to 62559 states and 86954 transitions. [2020-10-29 05:00:48,989 INFO L78 Accepts]: Start accepts. Automaton has 62559 states and 86954 transitions. Word has length 338 [2020-10-29 05:00:48,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:48,989 INFO L481 AbstractCegarLoop]: Abstraction has 62559 states and 86954 transitions. [2020-10-29 05:00:48,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:00:48,989 INFO L276 IsEmpty]: Start isEmpty. Operand 62559 states and 86954 transitions. [2020-10-29 05:00:49,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-10-29 05:00:49,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:49,107 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:00:49,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 05:00:49,107 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:49,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:49,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1313602455, now seen corresponding path program 1 times [2020-10-29 05:00:49,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:49,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408064978] [2020-10-29 05:00:49,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:49,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:49,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:50,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:54,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:54,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-29 05:00:54,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:00:54,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-29 05:00:54,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:54,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:54,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 05:00:54,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:00:54,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 05:00:54,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:54,666 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:54,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:54,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:54,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:54,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:54,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:54,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 05:00:54,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:54,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:54,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:54,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:54,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:00:54,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:54,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:00:54,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:54,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:55,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:55,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 05:00:55,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:55,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-29 05:00:55,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:55,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:55,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:55,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:55,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 05:00:55,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:55,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 05:00:55,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:55,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:55,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:55,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 05:00:55,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:55,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 05:00:55,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:55,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:55,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:55,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:55,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 05:00:55,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 37 [2020-10-29 05:00:55,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 05:00:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:55,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:55,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:55,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 05:00:55,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:55,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 05:00:55,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:55,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:55,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:55,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 05:00:55,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:55,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:55,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-29 05:00:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:55,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:55,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:55,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 05:00:55,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:55,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 05:00:55,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:55,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:55,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:55,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 05:00:55,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:55,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:55,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-29 05:00:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:55,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:55,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:55,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 05:00:55,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:55,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 05:00:55,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:55,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:55,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:55,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 05:00:55,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:55,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:00:55,531 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 190 proven. 81 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-29 05:00:55,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408064978] [2020-10-29 05:00:55,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:00:55,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:00:55,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066758975] [2020-10-29 05:00:55,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:00:55,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:00:55,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:00:55,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:00:55,533 INFO L87 Difference]: Start difference. First operand 62559 states and 86954 transitions. Second operand 8 states. [2020-10-29 05:00:55,823 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 05:00:57,479 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 05:01:01,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:01,851 INFO L93 Difference]: Finished difference Result 132387 states and 183562 transitions. [2020-10-29 05:01:01,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 05:01:01,854 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 350 [2020-10-29 05:01:01,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:02,187 INFO L225 Difference]: With dead ends: 132387 [2020-10-29 05:01:02,187 INFO L226 Difference]: Without dead ends: 70605 [2020-10-29 05:01:02,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-29 05:01:02,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70605 states. [2020-10-29 05:01:05,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70605 to 70456. [2020-10-29 05:01:05,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70456 states. [2020-10-29 05:01:05,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70456 states to 70456 states and 96038 transitions. [2020-10-29 05:01:05,696 INFO L78 Accepts]: Start accepts. Automaton has 70456 states and 96038 transitions. Word has length 350 [2020-10-29 05:01:05,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:05,697 INFO L481 AbstractCegarLoop]: Abstraction has 70456 states and 96038 transitions. [2020-10-29 05:01:05,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:01:05,697 INFO L276 IsEmpty]: Start isEmpty. Operand 70456 states and 96038 transitions. [2020-10-29 05:01:05,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-10-29 05:01:05,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:05,850 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:01:05,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 05:01:05,850 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:05,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:05,851 INFO L82 PathProgramCache]: Analyzing trace with hash 438030986, now seen corresponding path program 1 times [2020-10-29 05:01:05,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:05,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521534190] [2020-10-29 05:01:05,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:06,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:06,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:06,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:10,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:10,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 379 [2020-10-29 05:01:10,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:01:10,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-29 05:01:10,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:10,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:10,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:10,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 05:01:10,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 05:01:10,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:11,327 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:11,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:11,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:11,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:11,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:11,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:11,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:01:11,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:11,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:11,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:11,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:11,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:11,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:11,460 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 05:01:11,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:11,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:11,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:11,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 05:01:11,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:11,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 05:01:11,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:11,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:11,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:11,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:11,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 05:01:11,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:11,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 05:01:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:11,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:11,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:11,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 05:01:11,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:11,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-29 05:01:11,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:11,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:11,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:11,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:01:11,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-29 05:01:11,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:11,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-29 05:01:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:11,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:11,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:11,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 05:01:11,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:11,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 05:01:11,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:11,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:11,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:11,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 05:01:11,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:11,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:11,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-29 05:01:11,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:11,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:11,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:11,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 05:01:11,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:11,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 05:01:11,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:11,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:11,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:11,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 05:01:11,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:11,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:11,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-29 05:01:11,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:11,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:11,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:11,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 05:01:11,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:11,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 05:01:11,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:11,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:11,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:11,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 05:01:11,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:11,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:12,180 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 218 proven. 77 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2020-10-29 05:01:12,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521534190] [2020-10-29 05:01:12,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:12,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:01:12,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619211871] [2020-10-29 05:01:12,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:01:12,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:12,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:01:12,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:01:12,182 INFO L87 Difference]: Start difference. First operand 70456 states and 96038 transitions. Second operand 8 states. [2020-10-29 05:01:12,453 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 05:01:12,906 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 05:01:14,360 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 163