/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/Problem11_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:11:03,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:11:03,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:11:03,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:11:03,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:11:03,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:11:03,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:11:03,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:11:03,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:11:03,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:11:03,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:11:03,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:11:03,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:11:03,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:11:03,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:11:03,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:11:03,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:11:03,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:11:03,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:11:03,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:11:03,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:11:03,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:11:03,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:11:03,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:11:03,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:11:03,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:11:03,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:11:03,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:11:03,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:11:03,575 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:11:03,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:11:03,576 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:11:03,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:11:03,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:11:03,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:11:03,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:11:03,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:11:03,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:11:03,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:11:03,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:11:03,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:11:03,584 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 [2020-10-28 12:11:03,612 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:11:03,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:11:03,614 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:11:03,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:11:03,615 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:11:03,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:11:03,615 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:11:03,615 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:11:03,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:11:03,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:11:03,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:11:03,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:11:03,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:11:03,617 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:11:03,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:11:03,617 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:11:03,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:11:03,617 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:11:03,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:11:03,618 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:11:03,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:11:03,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:11:03,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:11:03,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:11:03,619 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:11:03,619 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:11:03,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:11:03,619 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:11:03,620 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:11:03,620 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:11:04,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:11:04,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:11:04,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:11:04,046 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:11:04,047 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:11:04,048 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label55.c [2020-10-28 12:11:04,138 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a204b5ff/b1adc97079264db992d5eec706454e25/FLAGf2a3b5466 [2020-10-28 12:11:04,998 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:11:04,999 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label55.c [2020-10-28 12:11:05,014 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a204b5ff/b1adc97079264db992d5eec706454e25/FLAGf2a3b5466 [2020-10-28 12:11:05,170 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a204b5ff/b1adc97079264db992d5eec706454e25 [2020-10-28 12:11:05,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:11:05,184 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:11:05,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:11:05,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:11:05,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:11:05,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:11:05" (1/1) ... [2020-10-28 12:11:05,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f10fdf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:11:05, skipping insertion in model container [2020-10-28 12:11:05,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:11:05" (1/1) ... [2020-10-28 12:11:05,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:11:05,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:11:05,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:11:05,906 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:11:06,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:11:06,167 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:11:06,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:11:06 WrapperNode [2020-10-28 12:11:06,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:11:06,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:11:06,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:11:06,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:11:06,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:11:06" (1/1) ... [2020-10-28 12:11:06,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:11:06" (1/1) ... [2020-10-28 12:11:06,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:11:06" (1/1) ... [2020-10-28 12:11:06,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:11:06" (1/1) ... [2020-10-28 12:11:06,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:11:06" (1/1) ... [2020-10-28 12:11:06,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:11:06" (1/1) ... [2020-10-28 12:11:06,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:11:06" (1/1) ... [2020-10-28 12:11:06,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:11:06,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:11:06,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:11:06,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:11:06,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:11:06" (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 [2020-10-28 12:11:06,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:11:06,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:11:06,487 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:11:06,487 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:11:06,488 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:11:06,488 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:11:06,488 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:11:06,488 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:11:06,489 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:11:06,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:11:06,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:11:06,490 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:11:06,490 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:11:06,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:11:06,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:11:06,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:11:06,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:11:06,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:11:06,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:11:08,568 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:11:08,569 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:11:08,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:11:08 BoogieIcfgContainer [2020-10-28 12:11:08,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:11:08,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:11:08,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:11:08,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:11:08,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:11:05" (1/3) ... [2020-10-28 12:11:08,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2060afc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:11:08, skipping insertion in model container [2020-10-28 12:11:08,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:11:06" (2/3) ... [2020-10-28 12:11:08,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2060afc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:11:08, skipping insertion in model container [2020-10-28 12:11:08,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:11:08" (3/3) ... [2020-10-28 12:11:08,581 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label55.c [2020-10-28 12:11:08,594 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:11:08,600 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:11:08,617 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:11:08,666 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:11:08,666 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:11:08,666 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:11:08,666 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:11:08,667 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:11:08,667 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:11:08,667 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:11:08,667 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:11:08,707 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-28 12:11:08,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 12:11:08,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:08,721 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] [2020-10-28 12:11:08,722 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:08,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:08,729 INFO L82 PathProgramCache]: Analyzing trace with hash -740741712, now seen corresponding path program 1 times [2020-10-28 12:11:08,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:08,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174429431] [2020-10-28 12:11:08,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:09,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:09,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:09,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 12:11:09,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:09,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 563 [2020-10-28 12:11:09,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:09,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:09,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:11:09,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:11:09,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-28 12:11:09,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:11:09,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:09,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:09,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:09,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:09,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:09,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 12:11:09,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:09,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:09,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:09,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:09,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:11:09,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:11:09,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:11:09,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174429431] [2020-10-28 12:11:09,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:11:09,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:11:09,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410107356] [2020-10-28 12:11:09,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:11:09,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:09,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:11:09,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:11:09,923 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 4 states. [2020-10-28 12:11:13,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:13,280 INFO L93 Difference]: Finished difference Result 796 states and 1392 transitions. [2020-10-28 12:11:13,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:11:13,283 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-10-28 12:11:13,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:13,302 INFO L225 Difference]: With dead ends: 796 [2020-10-28 12:11:13,303 INFO L226 Difference]: Without dead ends: 435 [2020-10-28 12:11:13,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:11:13,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-10-28 12:11:13,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 431. [2020-10-28 12:11:13,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-10-28 12:11:13,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 619 transitions. [2020-10-28 12:11:13,416 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 619 transitions. Word has length 52 [2020-10-28 12:11:13,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:13,417 INFO L481 AbstractCegarLoop]: Abstraction has 431 states and 619 transitions. [2020-10-28 12:11:13,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:11:13,418 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 619 transitions. [2020-10-28 12:11:13,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-28 12:11:13,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:13,425 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:11:13,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:11:13,425 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:13,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:13,426 INFO L82 PathProgramCache]: Analyzing trace with hash 395772620, now seen corresponding path program 1 times [2020-10-28 12:11:13,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:13,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445632724] [2020-10-28 12:11:13,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:13,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:13,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:14,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:15,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:15,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 12:11:15,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:11:15,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2162 [2020-10-28 12:11:15,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:15,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:15,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:11:15,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:11:15,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 12:11:15,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:11:15,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:15,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:15,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:15,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:15,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:15,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 12:11:15,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:15,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:15,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:15,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:15,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:11:15,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:11:15,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:15,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:16,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:16,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 12:11:16,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:16,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-28 12:11:16,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:16,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:16,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:16,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:11:16,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 12:11:16,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:11:16,103 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:11:16,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445632724] [2020-10-28 12:11:16,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:11:16,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:11:16,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910047416] [2020-10-28 12:11:16,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:11:16,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:16,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:11:16,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:11:16,111 INFO L87 Difference]: Start difference. First operand 431 states and 619 transitions. Second operand 7 states. [2020-10-28 12:11:19,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:19,850 INFO L93 Difference]: Finished difference Result 1287 states and 1883 transitions. [2020-10-28 12:11:19,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:11:19,853 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-10-28 12:11:19,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:19,863 INFO L225 Difference]: With dead ends: 1287 [2020-10-28 12:11:19,863 INFO L226 Difference]: Without dead ends: 862 [2020-10-28 12:11:19,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:11:19,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2020-10-28 12:11:19,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 828. [2020-10-28 12:11:19,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 828 states. [2020-10-28 12:11:19,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1110 transitions. [2020-10-28 12:11:19,930 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1110 transitions. Word has length 124 [2020-10-28 12:11:19,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:19,930 INFO L481 AbstractCegarLoop]: Abstraction has 828 states and 1110 transitions. [2020-10-28 12:11:19,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:11:19,931 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1110 transitions. [2020-10-28 12:11:19,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-28 12:11:19,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:19,935 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:11:19,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:11:19,935 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:19,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:19,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1366731588, now seen corresponding path program 1 times [2020-10-28 12:11:19,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:19,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394382061] [2020-10-28 12:11:19,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:20,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:20,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:21,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:21,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:21,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:21,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 12:11:21,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:11:21,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1810 [2020-10-28 12:11:21,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:21,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:21,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:11:21,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:11:21,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 12:11:21,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:11:21,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:21,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:21,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:21,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:21,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:21,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:11:21,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:21,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:21,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:21,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:21,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:11:21,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:11:21,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:21,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:22,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:22,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:22,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:11:22,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:22,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-28 12:11:22,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:22,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:22,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:22,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:11:22,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:11:22,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:22,258 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:11:22,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394382061] [2020-10-28 12:11:22,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:11:22,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:11:22,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454054050] [2020-10-28 12:11:22,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:11:22,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:22,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:11:22,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:11:22,263 INFO L87 Difference]: Start difference. First operand 828 states and 1110 transitions. Second operand 7 states. [2020-10-28 12:11:26,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:26,194 INFO L93 Difference]: Finished difference Result 2486 states and 3392 transitions. [2020-10-28 12:11:26,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:11:26,198 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2020-10-28 12:11:26,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:26,209 INFO L225 Difference]: With dead ends: 2486 [2020-10-28 12:11:26,209 INFO L226 Difference]: Without dead ends: 1664 [2020-10-28 12:11:26,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:11:26,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2020-10-28 12:11:26,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1626. [2020-10-28 12:11:26,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1626 states. [2020-10-28 12:11:26,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 2048 transitions. [2020-10-28 12:11:26,288 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 2048 transitions. Word has length 132 [2020-10-28 12:11:26,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:26,288 INFO L481 AbstractCegarLoop]: Abstraction has 1626 states and 2048 transitions. [2020-10-28 12:11:26,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:11:26,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 2048 transitions. [2020-10-28 12:11:26,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-28 12:11:26,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:26,294 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:11:26,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:11:26,294 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:26,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:26,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1260479933, now seen corresponding path program 1 times [2020-10-28 12:11:26,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:26,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556119185] [2020-10-28 12:11:26,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:26,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:26,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:26,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-28 12:11:26,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:26,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-28 12:11:26,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:26,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:26,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:26,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:11:26,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 12:11:26,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:26,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:26,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:26,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:26,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:26,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:26,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:26,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:11:26,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:26,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:26,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:26,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:26,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:26,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:11:26,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:26,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:27,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:27,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:11:27,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:27,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-28 12:11:27,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:27,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:27,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:27,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:27,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:11:27,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:27,231 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:11:27,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556119185] [2020-10-28 12:11:27,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:11:27,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:11:27,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084362195] [2020-10-28 12:11:27,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:11:27,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:27,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:11:27,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:11:27,244 INFO L87 Difference]: Start difference. First operand 1626 states and 2048 transitions. Second operand 5 states. [2020-10-28 12:11:30,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:30,145 INFO L93 Difference]: Finished difference Result 3668 states and 4840 transitions. [2020-10-28 12:11:30,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:11:30,146 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-10-28 12:11:30,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:30,164 INFO L225 Difference]: With dead ends: 3668 [2020-10-28 12:11:30,165 INFO L226 Difference]: Without dead ends: 2236 [2020-10-28 12:11:30,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:11:30,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2236 states. [2020-10-28 12:11:30,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2236 to 2215. [2020-10-28 12:11:30,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2215 states. [2020-10-28 12:11:30,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 2878 transitions. [2020-10-28 12:11:30,269 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 2878 transitions. Word has length 183 [2020-10-28 12:11:30,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:30,272 INFO L481 AbstractCegarLoop]: Abstraction has 2215 states and 2878 transitions. [2020-10-28 12:11:30,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:11:30,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 2878 transitions. [2020-10-28 12:11:30,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-28 12:11:30,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:30,281 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2020-10-28 12:11:30,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:11:30,281 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:30,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:30,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1157668738, now seen corresponding path program 1 times [2020-10-28 12:11:30,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:30,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703171143] [2020-10-28 12:11:30,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:30,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:30,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:31,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:32,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:32,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-28 12:11:32,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:11:32,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2057 [2020-10-28 12:11:32,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:32,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:32,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:32,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 12:11:32,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:11:32,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:11:32,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:32,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:32,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:32,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:32,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:32,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:32,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:11:32,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:32,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:32,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:32,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:32,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:32,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 12:11:32,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:32,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:32,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:32,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:32,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:11:32,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:32,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-28 12:11:32,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:32,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:32,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:32,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:32,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:11:32,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:11:32,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:11:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:32,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:33,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:33,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 12:11:33,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:33,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-28 12:11:33,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:33,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:33,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:33,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:11:33,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 12:11:33,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:33,143 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 157 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:11:33,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703171143] [2020-10-28 12:11:33,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:11:33,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:11:33,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313673858] [2020-10-28 12:11:33,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:11:33,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:33,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:11:33,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:11:33,151 INFO L87 Difference]: Start difference. First operand 2215 states and 2878 transitions. Second operand 7 states. [2020-10-28 12:11:36,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:36,501 INFO L93 Difference]: Finished difference Result 5015 states and 6614 transitions. [2020-10-28 12:11:36,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:11:36,502 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 240 [2020-10-28 12:11:36,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:36,521 INFO L225 Difference]: With dead ends: 5015 [2020-10-28 12:11:36,521 INFO L226 Difference]: Without dead ends: 2994 [2020-10-28 12:11:36,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:11:36,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2020-10-28 12:11:36,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 2980. [2020-10-28 12:11:36,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2980 states. [2020-10-28 12:11:36,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2980 states to 2980 states and 3830 transitions. [2020-10-28 12:11:36,626 INFO L78 Accepts]: Start accepts. Automaton has 2980 states and 3830 transitions. Word has length 240 [2020-10-28 12:11:36,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:36,627 INFO L481 AbstractCegarLoop]: Abstraction has 2980 states and 3830 transitions. [2020-10-28 12:11:36,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:11:36,627 INFO L276 IsEmpty]: Start isEmpty. Operand 2980 states and 3830 transitions. [2020-10-28 12:11:36,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-28 12:11:36,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:36,633 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2020-10-28 12:11:36,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:11:36,633 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:36,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:36,634 INFO L82 PathProgramCache]: Analyzing trace with hash -2017791626, now seen corresponding path program 1 times [2020-10-28 12:11:36,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:36,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604704263] [2020-10-28 12:11:36,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:36,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:36,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:36,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:37,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:40,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:40,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-28 12:11:40,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:11:40,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3393 [2020-10-28 12:11:40,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:40,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:40,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:40,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 12:11:40,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:11:40,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:40,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:40,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:40,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:40,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:40,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:40,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:11:40,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:40,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:40,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:40,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:40,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:40,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:40,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:40,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:40,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:40,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:11:40,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:40,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-28 12:11:40,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:40,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:40,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:40,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:40,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:11:40,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:11:40,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:11:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:40,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:40,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:40,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:11:40,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:40,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-28 12:11:40,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:40,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:40,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:40,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:11:40,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:11:40,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:40,978 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:11:40,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604704263] [2020-10-28 12:11:40,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:11:40,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:11:40,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37941820] [2020-10-28 12:11:40,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:11:40,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:40,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:11:40,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:11:40,984 INFO L87 Difference]: Start difference. First operand 2980 states and 3830 transitions. Second operand 7 states. [2020-10-28 12:11:44,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:44,672 INFO L93 Difference]: Finished difference Result 6390 states and 8334 transitions. [2020-10-28 12:11:44,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:11:44,678 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 241 [2020-10-28 12:11:44,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:44,699 INFO L225 Difference]: With dead ends: 6390 [2020-10-28 12:11:44,700 INFO L226 Difference]: Without dead ends: 3604 [2020-10-28 12:11:44,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:11:44,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3604 states. [2020-10-28 12:11:44,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3604 to 3581. [2020-10-28 12:11:44,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3581 states. [2020-10-28 12:11:44,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3581 states to 3581 states and 4522 transitions. [2020-10-28 12:11:44,821 INFO L78 Accepts]: Start accepts. Automaton has 3581 states and 4522 transitions. Word has length 241 [2020-10-28 12:11:44,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:44,822 INFO L481 AbstractCegarLoop]: Abstraction has 3581 states and 4522 transitions. [2020-10-28 12:11:44,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:11:44,822 INFO L276 IsEmpty]: Start isEmpty. Operand 3581 states and 4522 transitions. [2020-10-28 12:11:44,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-28 12:11:44,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:44,828 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2020-10-28 12:11:44,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:11:44,829 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:44,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:44,829 INFO L82 PathProgramCache]: Analyzing trace with hash 2109609098, now seen corresponding path program 1 times [2020-10-28 12:11:44,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:44,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729811537] [2020-10-28 12:11:44,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:44,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:45,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:45,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:48,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:48,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-28 12:11:48,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:11:48,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3214 [2020-10-28 12:11:48,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:48,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:48,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:48,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 12:11:48,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:11:48,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:11:48,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:48,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:48,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:48,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:48,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:48,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:11:48,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:48,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:48,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:48,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:48,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:48,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:11:48,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:48,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:48,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:48,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:11:48,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:48,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 12:11:48,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:48,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:48,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:48,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:48,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 12:11:48,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:48,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:11:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:48,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:48,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:48,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:11:48,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:48,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-28 12:11:48,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:48,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:48,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:48,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:11:48,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:11:48,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:11:49,069 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:11:49,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729811537] [2020-10-28 12:11:49,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:11:49,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:11:49,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86406410] [2020-10-28 12:11:49,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:11:49,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:49,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:11:49,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:11:49,073 INFO L87 Difference]: Start difference. First operand 3581 states and 4522 transitions. Second operand 7 states. [2020-10-28 12:11:52,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:52,666 INFO L93 Difference]: Finished difference Result 7488 states and 10064 transitions. [2020-10-28 12:11:52,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:11:52,667 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2020-10-28 12:11:52,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:52,694 INFO L225 Difference]: With dead ends: 7488 [2020-10-28 12:11:52,694 INFO L226 Difference]: Without dead ends: 4101 [2020-10-28 12:11:52,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:11:52,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4101 states. [2020-10-28 12:11:52,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4101 to 3989. [2020-10-28 12:11:52,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3989 states. [2020-10-28 12:11:52,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3989 states to 3989 states and 5027 transitions. [2020-10-28 12:11:52,883 INFO L78 Accepts]: Start accepts. Automaton has 3989 states and 5027 transitions. Word has length 251 [2020-10-28 12:11:52,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:52,884 INFO L481 AbstractCegarLoop]: Abstraction has 3989 states and 5027 transitions. [2020-10-28 12:11:52,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:11:52,884 INFO L276 IsEmpty]: Start isEmpty. Operand 3989 states and 5027 transitions. [2020-10-28 12:11:52,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-28 12:11:52,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:52,891 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:11:52,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:11:52,891 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:52,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:52,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1693558422, now seen corresponding path program 1 times [2020-10-28 12:11:52,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:52,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050413304] [2020-10-28 12:11:52,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:53,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:53,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:54,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:54,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-28 12:11:54,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:11:54,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1196 [2020-10-28 12:11:54,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:54,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:54,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:54,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-28 12:11:54,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-28 12:11:54,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:54,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:54,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:54,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:54,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:54,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:54,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:11:54,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:54,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:54,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:54,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:54,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:54,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:54,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:54,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:54,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:54,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:54,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:11:54,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:54,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 12:11:54,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:54,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:54,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:54,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:54,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:54,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:54,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:11:54,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:54,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:54,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:54,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 12:11:54,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:54,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-28 12:11:54,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:54,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:54,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:54,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:54,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:11:54,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:54,686 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-28 12:11:54,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050413304] [2020-10-28 12:11:54,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:11:54,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:11:54,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502084116] [2020-10-28 12:11:54,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:11:54,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:54,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:11:54,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:11:54,690 INFO L87 Difference]: Start difference. First operand 3989 states and 5027 transitions. Second operand 5 states. [2020-10-28 12:11:57,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:57,790 INFO L93 Difference]: Finished difference Result 8398 states and 10816 transitions. [2020-10-28 12:11:57,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:11:57,791 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 252 [2020-10-28 12:11:57,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:57,816 INFO L225 Difference]: With dead ends: 8398 [2020-10-28 12:11:57,817 INFO L226 Difference]: Without dead ends: 4603 [2020-10-28 12:11:57,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:11:57,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4603 states. [2020-10-28 12:11:57,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4603 to 4571. [2020-10-28 12:11:57,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4571 states. [2020-10-28 12:11:57,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4571 states to 4571 states and 5911 transitions. [2020-10-28 12:11:57,982 INFO L78 Accepts]: Start accepts. Automaton has 4571 states and 5911 transitions. Word has length 252 [2020-10-28 12:11:57,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:57,983 INFO L481 AbstractCegarLoop]: Abstraction has 4571 states and 5911 transitions. [2020-10-28 12:11:57,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:11:57,984 INFO L276 IsEmpty]: Start isEmpty. Operand 4571 states and 5911 transitions. [2020-10-28 12:11:57,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-28 12:11:57,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:57,992 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:11:57,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:11:57,993 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:57,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:57,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1447988929, now seen corresponding path program 1 times [2020-10-28 12:11:57,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:57,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723220862] [2020-10-28 12:11:57,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:58,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:58,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:58,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:58,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:00,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:00,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-28 12:12:00,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:12:00,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2334 [2020-10-28 12:12:00,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:00,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:00,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:00,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:12:00,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 12:12:00,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:12:00,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:00,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:00,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:00,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:00,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:00,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:12:00,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:00,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:00,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:00,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:00,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:00,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:00,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:00,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:00,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:00,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:00,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:12:00,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:00,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 12:12:00,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:00,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:00,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:00,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:00,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:12:00,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:12:00,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:12:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:00,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:00,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:00,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 12:12:00,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:00,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 12:12:00,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:00,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:00,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:00,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:12:00,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:12:00,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:01,087 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:12:01,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723220862] [2020-10-28 12:12:01,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:01,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:12:01,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876549578] [2020-10-28 12:12:01,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:12:01,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:01,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:12:01,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:12:01,116 INFO L87 Difference]: Start difference. First operand 4571 states and 5911 transitions. Second operand 7 states. [2020-10-28 12:12:06,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:06,010 INFO L93 Difference]: Finished difference Result 11132 states and 14902 transitions. [2020-10-28 12:12:06,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:12:06,011 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 252 [2020-10-28 12:12:06,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:06,060 INFO L225 Difference]: With dead ends: 11132 [2020-10-28 12:12:06,060 INFO L226 Difference]: Without dead ends: 6755 [2020-10-28 12:12:06,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:12:06,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6755 states. [2020-10-28 12:12:06,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6755 to 6739. [2020-10-28 12:12:06,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6739 states. [2020-10-28 12:12:06,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6739 states to 6739 states and 8629 transitions. [2020-10-28 12:12:06,281 INFO L78 Accepts]: Start accepts. Automaton has 6739 states and 8629 transitions. Word has length 252 [2020-10-28 12:12:06,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:06,282 INFO L481 AbstractCegarLoop]: Abstraction has 6739 states and 8629 transitions. [2020-10-28 12:12:06,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:12:06,282 INFO L276 IsEmpty]: Start isEmpty. Operand 6739 states and 8629 transitions. [2020-10-28 12:12:06,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-28 12:12:06,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:06,289 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2020-10-28 12:12:06,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:12:06,290 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:06,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:06,291 INFO L82 PathProgramCache]: Analyzing trace with hash -58451911, now seen corresponding path program 1 times [2020-10-28 12:12:06,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:06,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883826697] [2020-10-28 12:12:06,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:06,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:06,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:08,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:08,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-28 12:12:08,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:12:08,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1939 [2020-10-28 12:12:08,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:08,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:08,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:08,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:12:08,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 12:12:08,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:08,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:08,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:08,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:08,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:08,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:08,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:12:08,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:08,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:08,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:08,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:08,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:08,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:12:08,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:08,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:08,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:08,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:12:08,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:08,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-28 12:12:08,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:08,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:08,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:08,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:08,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:12:08,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:12:08,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:12:08,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:08,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:08,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:08,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:12:08,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:08,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 12:12:08,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:08,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:08,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:08,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:12:08,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:12:08,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:09,051 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:12:09,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883826697] [2020-10-28 12:12:09,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:09,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:12:09,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792665990] [2020-10-28 12:12:09,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:12:09,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:09,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:12:09,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:12:09,055 INFO L87 Difference]: Start difference. First operand 6739 states and 8629 transitions. Second operand 7 states. [2020-10-28 12:12:13,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:13,812 INFO L93 Difference]: Finished difference Result 14842 states and 19141 transitions. [2020-10-28 12:12:13,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:12:13,814 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 256 [2020-10-28 12:12:13,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:13,847 INFO L225 Difference]: With dead ends: 14842 [2020-10-28 12:12:13,848 INFO L226 Difference]: Without dead ends: 8495 [2020-10-28 12:12:13,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:12:13,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8495 states. [2020-10-28 12:12:14,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8495 to 7711. [2020-10-28 12:12:14,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7711 states. [2020-10-28 12:12:14,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7711 states to 7711 states and 9791 transitions. [2020-10-28 12:12:14,144 INFO L78 Accepts]: Start accepts. Automaton has 7711 states and 9791 transitions. Word has length 256 [2020-10-28 12:12:14,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:14,145 INFO L481 AbstractCegarLoop]: Abstraction has 7711 states and 9791 transitions. [2020-10-28 12:12:14,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:12:14,145 INFO L276 IsEmpty]: Start isEmpty. Operand 7711 states and 9791 transitions. [2020-10-28 12:12:14,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-28 12:12:14,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:14,153 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2020-10-28 12:12:14,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 12:12:14,153 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:14,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:14,154 INFO L82 PathProgramCache]: Analyzing trace with hash 888585975, now seen corresponding path program 1 times [2020-10-28 12:12:14,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:14,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116777921] [2020-10-28 12:12:14,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:14,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:14,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:14,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:14,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:15,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:15,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:17,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:19,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:19,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-28 12:12:19,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 12:12:19,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 12:12:19,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:19,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:19,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:19,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-28 12:12:19,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:12:19,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:19,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:19,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:19,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:19,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:19,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:19,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:12:19,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:19,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:19,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:19,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:19,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:19,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:12:19,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:19,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:19,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:19,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:12:19,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:19,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-28 12:12:19,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:19,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:19,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:19,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-28 12:12:19,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:12:19,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:19,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:12:19,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:19,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:19,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:19,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:12:19,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:19,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 12:12:19,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:19,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:19,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:19,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 12:12:19,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:19,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:19,762 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-28 12:12:19,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116777921] [2020-10-28 12:12:19,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:19,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:12:19,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698343382] [2020-10-28 12:12:19,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:12:19,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:19,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:12:19,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:12:19,765 INFO L87 Difference]: Start difference. First operand 7711 states and 9791 transitions. Second operand 5 states. [2020-10-28 12:12:22,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:22,838 INFO L93 Difference]: Finished difference Result 17506 states and 22991 transitions. [2020-10-28 12:12:22,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:12:22,843 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 256 [2020-10-28 12:12:22,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:22,883 INFO L225 Difference]: With dead ends: 17506 [2020-10-28 12:12:22,883 INFO L226 Difference]: Without dead ends: 10187 [2020-10-28 12:12:22,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:12:22,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10187 states. [2020-10-28 12:12:23,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10187 to 9795. [2020-10-28 12:12:23,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9795 states. [2020-10-28 12:12:23,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9795 states to 9795 states and 12315 transitions. [2020-10-28 12:12:23,181 INFO L78 Accepts]: Start accepts. Automaton has 9795 states and 12315 transitions. Word has length 256 [2020-10-28 12:12:23,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:23,181 INFO L481 AbstractCegarLoop]: Abstraction has 9795 states and 12315 transitions. [2020-10-28 12:12:23,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:12:23,182 INFO L276 IsEmpty]: Start isEmpty. Operand 9795 states and 12315 transitions. [2020-10-28 12:12:23,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-28 12:12:23,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:23,189 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:12:23,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 12:12:23,190 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:23,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:23,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1017766350, now seen corresponding path program 1 times [2020-10-28 12:12:23,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:23,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425934571] [2020-10-28 12:12:23,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:23,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:23,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:24,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:25,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:25,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-28 12:12:25,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:12:25,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2659 [2020-10-28 12:12:25,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:25,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:25,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:25,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-28 12:12:25,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:12:25,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:12:26,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:26,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:26,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:26,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:26,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:26,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:26,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:12:26,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:26,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:26,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:26,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:26,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:26,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:12:26,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:26,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:26,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:26,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:12:26,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:26,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-28 12:12:26,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:26,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:26,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:26,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:26,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 12:12:26,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:12:26,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:12:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:26,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:26,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:26,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:12:26,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:26,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-28 12:12:26,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:26,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:26,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:26,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:12:26,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:12:26,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:26,741 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:12:26,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425934571] [2020-10-28 12:12:26,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:26,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:12:26,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92063803] [2020-10-28 12:12:26,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:12:26,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:26,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:12:26,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:12:26,745 INFO L87 Difference]: Start difference. First operand 9795 states and 12315 transitions. Second operand 7 states. [2020-10-28 12:12:30,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:30,431 INFO L93 Difference]: Finished difference Result 19993 states and 25201 transitions. [2020-10-28 12:12:30,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:12:30,432 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 272 [2020-10-28 12:12:30,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:30,492 INFO L225 Difference]: With dead ends: 19993 [2020-10-28 12:12:30,493 INFO L226 Difference]: Without dead ends: 10592 [2020-10-28 12:12:30,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:12:30,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10592 states. [2020-10-28 12:12:30,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10592 to 10571. [2020-10-28 12:12:30,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10571 states. [2020-10-28 12:12:30,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10571 states to 10571 states and 13184 transitions. [2020-10-28 12:12:30,785 INFO L78 Accepts]: Start accepts. Automaton has 10571 states and 13184 transitions. Word has length 272 [2020-10-28 12:12:30,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:30,787 INFO L481 AbstractCegarLoop]: Abstraction has 10571 states and 13184 transitions. [2020-10-28 12:12:30,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:12:30,787 INFO L276 IsEmpty]: Start isEmpty. Operand 10571 states and 13184 transitions. [2020-10-28 12:12:30,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-28 12:12:30,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:30,795 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:12:30,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 12:12:30,796 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:30,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:30,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1962726101, now seen corresponding path program 1 times [2020-10-28 12:12:30,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:30,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843985508] [2020-10-28 12:12:30,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:30,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:30,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:30,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:31,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:33,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:33,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-28 12:12:33,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:12:33,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2566 [2020-10-28 12:12:33,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:33,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:33,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:33,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 234 [2020-10-28 12:12:33,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-28 12:12:33,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:33,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:33,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:33,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:33,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:33,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:33,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:12:33,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:33,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:33,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:33,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:33,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:33,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:33,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:33,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:33,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:33,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:12:33,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:33,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 12:12:33,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:33,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:33,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:33,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:33,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:33,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:33,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:12:33,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:33,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:33,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:33,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 12:12:33,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:33,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 12:12:33,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:33,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:33,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:33,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:33,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 12:12:33,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:12:33,936 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-28 12:12:33,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843985508] [2020-10-28 12:12:33,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:33,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:12:33,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754871172] [2020-10-28 12:12:33,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:12:33,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:33,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:12:33,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:12:33,939 INFO L87 Difference]: Start difference. First operand 10571 states and 13184 transitions. Second operand 5 states. [2020-10-28 12:12:37,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:37,416 INFO L93 Difference]: Finished difference Result 23409 states and 29708 transitions. [2020-10-28 12:12:37,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:12:37,418 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 274 [2020-10-28 12:12:37,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:37,461 INFO L225 Difference]: With dead ends: 23409 [2020-10-28 12:12:37,461 INFO L226 Difference]: Without dead ends: 12464 [2020-10-28 12:12:37,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:12:37,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12464 states. [2020-10-28 12:12:37,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12464 to 12452. [2020-10-28 12:12:37,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12452 states. [2020-10-28 12:12:37,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12452 states to 12452 states and 15424 transitions. [2020-10-28 12:12:37,778 INFO L78 Accepts]: Start accepts. Automaton has 12452 states and 15424 transitions. Word has length 274 [2020-10-28 12:12:37,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:37,779 INFO L481 AbstractCegarLoop]: Abstraction has 12452 states and 15424 transitions. [2020-10-28 12:12:37,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:12:37,779 INFO L276 IsEmpty]: Start isEmpty. Operand 12452 states and 15424 transitions. [2020-10-28 12:12:37,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-28 12:12:37,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:37,788 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2020-10-28 12:12:37,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 12:12:37,789 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:37,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:37,789 INFO L82 PathProgramCache]: Analyzing trace with hash 471222636, now seen corresponding path program 1 times [2020-10-28 12:12:37,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:37,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84781697] [2020-10-28 12:12:37,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:37,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:38,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:38,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:38,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-28 12:12:38,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:12:38,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 685 [2020-10-28 12:12:38,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:38,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:38,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:38,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 255 [2020-10-28 12:12:38,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-28 12:12:38,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:38,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:38,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:38,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:38,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:38,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:38,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:12:38,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:38,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:38,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:38,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:38,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:38,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:38,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:38,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:38,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:38,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:38,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 12:12:38,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:38,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 12:12:38,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:38,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:38,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:38,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:38,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:38,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:38,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-28 12:12:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:38,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:38,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:38,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 12:12:38,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:38,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 12:12:38,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:38,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:38,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:38,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:38,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-28 12:12:38,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:39,059 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-28 12:12:39,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84781697] [2020-10-28 12:12:39,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:39,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:12:39,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078196976] [2020-10-28 12:12:39,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:12:39,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:39,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:12:39,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:12:39,063 INFO L87 Difference]: Start difference. First operand 12452 states and 15424 transitions. Second operand 6 states. [2020-10-28 12:12:43,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:43,558 INFO L93 Difference]: Finished difference Result 24735 states and 30679 transitions. [2020-10-28 12:12:43,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:12:43,559 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 295 [2020-10-28 12:12:43,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:43,597 INFO L225 Difference]: With dead ends: 24735 [2020-10-28 12:12:43,597 INFO L226 Difference]: Without dead ends: 12677 [2020-10-28 12:12:43,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:12:43,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12677 states. [2020-10-28 12:12:43,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12677 to 12268. [2020-10-28 12:12:43,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12268 states. [2020-10-28 12:12:43,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12268 states to 12268 states and 14948 transitions. [2020-10-28 12:12:43,883 INFO L78 Accepts]: Start accepts. Automaton has 12268 states and 14948 transitions. Word has length 295 [2020-10-28 12:12:43,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:43,884 INFO L481 AbstractCegarLoop]: Abstraction has 12268 states and 14948 transitions. [2020-10-28 12:12:43,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:12:43,884 INFO L276 IsEmpty]: Start isEmpty. Operand 12268 states and 14948 transitions. [2020-10-28 12:12:43,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-28 12:12:43,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:43,900 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:12:43,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 12:12:43,900 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:43,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:43,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1201560647, now seen corresponding path program 1 times [2020-10-28 12:12:43,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:43,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29925400] [2020-10-28 12:12:43,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:43,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:44,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:44,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:44,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:44,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:48,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:48,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 358 [2020-10-28 12:12:48,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:12:48,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 12:12:48,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:48,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:48,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:12:48,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-28 12:12:48,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-28 12:12:48,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:49,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:49,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:49,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:49,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:49,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:49,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:49,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:12:49,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:49,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:49,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:49,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:49,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:49,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:49,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:49,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:49,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:49,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:12:49,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:49,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 12:12:49,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:49,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:49,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:49,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:49,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:49,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:49,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:12:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:49,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:49,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:49,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 12:12:49,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:49,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 12:12:49,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:49,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:49,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:49,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:49,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 12:12:49,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:49,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-28 12:12:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:49,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:49,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:49,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:49,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:12:49,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:12:49,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-28 12:12:49,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:49,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:49,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:49,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:49,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:12:49,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:49,569 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 138 proven. 3 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-28 12:12:49,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29925400] [2020-10-28 12:12:49,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:49,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:12:49,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215937168] [2020-10-28 12:12:49,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:12:49,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:49,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:12:49,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:12:49,571 INFO L87 Difference]: Start difference. First operand 12268 states and 14948 transitions. Second operand 5 states. [2020-10-28 12:12:52,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:52,093 INFO L93 Difference]: Finished difference Result 25847 states and 31501 transitions. [2020-10-28 12:12:52,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:12:52,094 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 342 [2020-10-28 12:12:52,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:52,135 INFO L225 Difference]: With dead ends: 25847 [2020-10-28 12:12:52,136 INFO L226 Difference]: Without dead ends: 13973 [2020-10-28 12:12:52,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:12:52,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13973 states. [2020-10-28 12:12:52,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13973 to 13585. [2020-10-28 12:12:52,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13585 states. [2020-10-28 12:12:52,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13585 states to 13585 states and 16562 transitions. [2020-10-28 12:12:52,463 INFO L78 Accepts]: Start accepts. Automaton has 13585 states and 16562 transitions. Word has length 342 [2020-10-28 12:12:52,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:52,464 INFO L481 AbstractCegarLoop]: Abstraction has 13585 states and 16562 transitions. [2020-10-28 12:12:52,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:12:52,464 INFO L276 IsEmpty]: Start isEmpty. Operand 13585 states and 16562 transitions. [2020-10-28 12:12:52,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-10-28 12:12:52,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:52,479 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:12:52,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 12:12:52,479 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:52,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:52,480 INFO L82 PathProgramCache]: Analyzing trace with hash -241822118, now seen corresponding path program 1 times [2020-10-28 12:12:52,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:52,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75619342] [2020-10-28 12:12:52,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:52,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:52,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:53,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:53,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 362 [2020-10-28 12:12:53,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:12:53,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 981 [2020-10-28 12:12:53,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:53,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:53,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:53,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-28 12:12:53,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 12:12:53,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:53,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:53,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:53,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:53,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:53,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:53,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:53,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:12:53,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:53,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:53,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:53,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:53,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:53,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:53,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:53,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:53,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:53,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:12:53,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:53,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 12:12:53,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:53,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:53,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:53,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:53,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:53,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:53,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:12:53,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:53,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:53,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:53,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 12:12:53,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:53,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 12:12:53,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:53,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:53,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:53,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:53,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:12:53,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:53,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 12:12:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:53,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:53,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:53,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:12:53,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:53,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 12:12:53,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:53,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:53,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:53,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:12:53,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:12:53,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:54,128 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 309 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-28 12:12:54,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75619342] [2020-10-28 12:12:54,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:54,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:12:54,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302134412] [2020-10-28 12:12:54,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:12:54,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:54,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:12:54,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:12:54,130 INFO L87 Difference]: Start difference. First operand 13585 states and 16562 transitions. Second operand 7 states. [2020-10-28 12:12:58,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:58,433 INFO L93 Difference]: Finished difference Result 27197 states and 33181 transitions. [2020-10-28 12:12:58,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:12:58,434 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 346 [2020-10-28 12:12:58,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:58,474 INFO L225 Difference]: With dead ends: 27197 [2020-10-28 12:12:58,474 INFO L226 Difference]: Without dead ends: 14006 [2020-10-28 12:12:58,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:12:58,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14006 states. [2020-10-28 12:12:58,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14006 to 13793. [2020-10-28 12:12:58,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13793 states. [2020-10-28 12:12:58,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13793 states to 13793 states and 16406 transitions. [2020-10-28 12:12:58,790 INFO L78 Accepts]: Start accepts. Automaton has 13793 states and 16406 transitions. Word has length 346 [2020-10-28 12:12:58,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:58,791 INFO L481 AbstractCegarLoop]: Abstraction has 13793 states and 16406 transitions. [2020-10-28 12:12:58,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:12:58,791 INFO L276 IsEmpty]: Start isEmpty. Operand 13793 states and 16406 transitions. [2020-10-28 12:12:58,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-10-28 12:12:58,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:58,806 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:12:58,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 12:12:58,806 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:58,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:58,807 INFO L82 PathProgramCache]: Analyzing trace with hash -2141918253, now seen corresponding path program 1 times [2020-10-28 12:12:58,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:58,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622203136] [2020-10-28 12:12:58,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:58,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:59,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:00,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:00,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-28 12:13:00,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:13:00,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1597 [2020-10-28 12:13:00,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:00,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:00,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:00,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-28 12:13:00,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 12:13:00,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:00,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:00,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:00,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:00,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:00,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:00,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:13:00,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:00,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:00,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:00,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:00,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:00,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:00,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:00,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:00,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:00,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:13:00,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:00,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:13:00,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:00,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:00,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:00,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:00,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:00,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:00,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:13:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:00,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:00,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:00,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 12:13:00,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:00,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 12:13:00,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:00,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:00,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:00,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:00,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 12:13:00,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:00,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-28 12:13:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:00,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:00,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:00,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:13:00,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:00,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 12:13:00,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:00,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:00,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:00,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:13:00,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:13:00,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:01,233 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 295 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-28 12:13:01,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622203136] [2020-10-28 12:13:01,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:13:01,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:13:01,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581655577] [2020-10-28 12:13:01,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:13:01,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:01,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:13:01,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:13:01,236 INFO L87 Difference]: Start difference. First operand 13793 states and 16406 transitions. Second operand 7 states. [2020-10-28 12:13:05,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:13:05,199 INFO L93 Difference]: Finished difference Result 27964 states and 33335 transitions. [2020-10-28 12:13:05,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:13:05,200 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 347 [2020-10-28 12:13:05,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:13:05,236 INFO L225 Difference]: With dead ends: 27964 [2020-10-28 12:13:05,236 INFO L226 Difference]: Without dead ends: 14173 [2020-10-28 12:13:05,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:13:05,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14173 states. [2020-10-28 12:13:05,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14173 to 13587. [2020-10-28 12:13:05,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13587 states. [2020-10-28 12:13:05,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13587 states to 13587 states and 16016 transitions. [2020-10-28 12:13:05,556 INFO L78 Accepts]: Start accepts. Automaton has 13587 states and 16016 transitions. Word has length 347 [2020-10-28 12:13:05,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:13:05,557 INFO L481 AbstractCegarLoop]: Abstraction has 13587 states and 16016 transitions. [2020-10-28 12:13:05,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:13:05,557 INFO L276 IsEmpty]: Start isEmpty. Operand 13587 states and 16016 transitions. [2020-10-28 12:13:05,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2020-10-28 12:13:05,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:05,572 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:13:05,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 12:13:05,572 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:05,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:05,573 INFO L82 PathProgramCache]: Analyzing trace with hash -865699369, now seen corresponding path program 1 times [2020-10-28 12:13:05,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:05,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146297823] [2020-10-28 12:13:05,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:05,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:06,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:06,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-10-28 12:13:06,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:06,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 530 [2020-10-28 12:13:06,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:06,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:06,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:06,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 317 [2020-10-28 12:13:06,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 12:13:06,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:06,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:06,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:06,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:06,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:06,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:06,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:13:06,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:06,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:06,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:06,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:06,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:06,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:13:06,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:06,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:06,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:06,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:13:06,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:06,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 12:13:06,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:06,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:06,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:06,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:06,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:06,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:13:06,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:13:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:06,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:06,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:06,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-28 12:13:06,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:06,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-28 12:13:06,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:06,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:06,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:06,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:06,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-28 12:13:06,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:06,877 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-28 12:13:06,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146297823] [2020-10-28 12:13:06,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:13:06,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:13:06,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247712991] [2020-10-28 12:13:06,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:13:06,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:06,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:13:06,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:13:06,879 INFO L87 Difference]: Start difference. First operand 13587 states and 16016 transitions. Second operand 5 states. [2020-10-28 12:13:09,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:13:09,946 INFO L93 Difference]: Finished difference Result 29486 states and 35030 transitions. [2020-10-28 12:13:09,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:13:09,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 358 [2020-10-28 12:13:09,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:13:09,977 INFO L225 Difference]: With dead ends: 29486 [2020-10-28 12:13:09,977 INFO L226 Difference]: Without dead ends: 16093 [2020-10-28 12:13:09,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:13:10,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16093 states. [2020-10-28 12:13:10,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16093 to 14944. [2020-10-28 12:13:10,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14944 states. [2020-10-28 12:13:10,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14944 states to 14944 states and 17603 transitions. [2020-10-28 12:13:10,295 INFO L78 Accepts]: Start accepts. Automaton has 14944 states and 17603 transitions. Word has length 358 [2020-10-28 12:13:10,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:13:10,296 INFO L481 AbstractCegarLoop]: Abstraction has 14944 states and 17603 transitions. [2020-10-28 12:13:10,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:13:10,296 INFO L276 IsEmpty]: Start isEmpty. Operand 14944 states and 17603 transitions. [2020-10-28 12:13:10,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2020-10-28 12:13:10,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:10,311 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:13:10,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 12:13:10,311 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:10,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:10,312 INFO L82 PathProgramCache]: Analyzing trace with hash 2085649762, now seen corresponding path program 1 times [2020-10-28 12:13:10,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:10,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914231146] [2020-10-28 12:13:10,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:10,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:10,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:10,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:11,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:11,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 389 [2020-10-28 12:13:11,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:13:11,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 955 [2020-10-28 12:13:11,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:11,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:11,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:11,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-28 12:13:11,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 12:13:11,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:11,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:11,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:11,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:11,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:11,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:11,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:13:11,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:11,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:11,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:11,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:11,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:11,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:11,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:11,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:11,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:11,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:13:11,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:11,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 12:13:11,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:11,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:11,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:11,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:11,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:11,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:11,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:13:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:11,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:11,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:11,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 12:13:11,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:11,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 12:13:11,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:11,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:11,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:11,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:11,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 12:13:11,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:11,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-28 12:13:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:11,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:11,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:11,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:13:11,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:11,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 12:13:11,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:11,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:11,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:11,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:13:11,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:13:11,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:12,088 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 319 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-28 12:13:12,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914231146] [2020-10-28 12:13:12,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:13:12,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:13:12,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528795936] [2020-10-28 12:13:12,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:13:12,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:12,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:13:12,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:13:12,091 INFO L87 Difference]: Start difference. First operand 14944 states and 17603 transitions. Second operand 7 states. [2020-10-28 12:13:17,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:13:17,003 INFO L93 Difference]: Finished difference Result 32534 states and 38199 transitions. [2020-10-28 12:13:17,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:13:17,004 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 373 [2020-10-28 12:13:17,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:13:17,043 INFO L225 Difference]: With dead ends: 32534 [2020-10-28 12:13:17,043 INFO L226 Difference]: Without dead ends: 17212 [2020-10-28 12:13:17,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:13:17,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17212 states. [2020-10-28 12:13:17,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17212 to 14748. [2020-10-28 12:13:17,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14748 states. [2020-10-28 12:13:17,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14748 states to 14748 states and 17285 transitions. [2020-10-28 12:13:17,363 INFO L78 Accepts]: Start accepts. Automaton has 14748 states and 17285 transitions. Word has length 373 [2020-10-28 12:13:17,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:13:17,363 INFO L481 AbstractCegarLoop]: Abstraction has 14748 states and 17285 transitions. [2020-10-28 12:13:17,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:13:17,364 INFO L276 IsEmpty]: Start isEmpty. Operand 14748 states and 17285 transitions. [2020-10-28 12:13:17,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-10-28 12:13:17,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:17,377 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:13:17,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 12:13:17,377 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:17,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:17,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1591310628, now seen corresponding path program 1 times [2020-10-28 12:13:17,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:17,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709351565] [2020-10-28 12:13:17,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:17,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:17,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:18,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:18,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 405 [2020-10-28 12:13:18,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:13:18,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 865 [2020-10-28 12:13:18,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:18,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:18,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:18,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 255 [2020-10-28 12:13:18,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 12:13:18,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:18,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:18,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:18,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:18,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:18,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:18,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:13:18,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:18,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:18,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:18,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:18,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:18,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:18,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:18,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:18,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:18,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:18,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 12:13:18,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:18,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 12:13:18,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:18,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:18,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:18,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:18,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:18,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:18,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-28 12:13:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:18,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:18,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:18,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 12:13:18,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:18,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 12:13:18,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:18,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:18,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:18,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:18,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-28 12:13:18,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:18,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-28 12:13:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:18,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:18,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:18,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:13:18,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:18,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 12:13:18,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:18,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:18,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:18,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:13:18,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:13:18,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:18,924 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 297 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-28 12:13:18,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709351565] [2020-10-28 12:13:18,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:13:18,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:13:18,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484605352] [2020-10-28 12:13:18,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:13:18,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:18,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:13:18,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:13:18,926 INFO L87 Difference]: Start difference. First operand 14748 states and 17285 transitions. Second operand 7 states. [2020-10-28 12:13:23,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:13:23,811 INFO L93 Difference]: Finished difference Result 32561 states and 38045 transitions. [2020-10-28 12:13:23,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:13:23,812 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 389 [2020-10-28 12:13:23,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:13:23,841 INFO L225 Difference]: With dead ends: 32561 [2020-10-28 12:13:23,842 INFO L226 Difference]: Without dead ends: 18007 [2020-10-28 12:13:23,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:13:23,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18007 states. [2020-10-28 12:13:24,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18007 to 16836. [2020-10-28 12:13:24,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16836 states. [2020-10-28 12:13:24,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16836 states to 16836 states and 19525 transitions. [2020-10-28 12:13:24,168 INFO L78 Accepts]: Start accepts. Automaton has 16836 states and 19525 transitions. Word has length 389 [2020-10-28 12:13:24,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:13:24,169 INFO L481 AbstractCegarLoop]: Abstraction has 16836 states and 19525 transitions. [2020-10-28 12:13:24,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:13:24,169 INFO L276 IsEmpty]: Start isEmpty. Operand 16836 states and 19525 transitions. [2020-10-28 12:13:24,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2020-10-28 12:13:24,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:24,189 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 12:13:24,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 12:13:24,189 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:24,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:24,190 INFO L82 PathProgramCache]: Analyzing trace with hash -744656262, now seen corresponding path program 1 times [2020-10-28 12:13:24,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:24,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189138349] [2020-10-28 12:13:24,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:24,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:24,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:24,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:28,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:28,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 449 [2020-10-28 12:13:28,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:13:28,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4086 [2020-10-28 12:13:28,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:28,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:28,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:28,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-28 12:13:28,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 12:13:28,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:28,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:28,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:28,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:28,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:28,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:28,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:13:28,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:28,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:28,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:28,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:28,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:28,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:28,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:28,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:28,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:28,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:13:28,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:28,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:13:28,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:28,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:28,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:28,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:28,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:28,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:28,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:13:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:28,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:28,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:28,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:13:28,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:28,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:13:28,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:28,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:28,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:28,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:28,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:28,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:28,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:13:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:28,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:28,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:28,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:13:28,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:28,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 12:13:28,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:28,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:28,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:28,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:28,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 12:13:28,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:28,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-28 12:13:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:28,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:28,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:28,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:13:28,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:28,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 12:13:28,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:28,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:28,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:28,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:13:28,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:13:28,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:29,228 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 430 proven. 2 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2020-10-28 12:13:29,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189138349] [2020-10-28 12:13:29,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:13:29,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:13:29,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536191648] [2020-10-28 12:13:29,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:13:29,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:29,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:13:29,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:13:29,231 INFO L87 Difference]: Start difference. First operand 16836 states and 19525 transitions. Second operand 7 states. [2020-10-28 12:13:32,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:13:32,798 INFO L93 Difference]: Finished difference Result 34101 states and 39588 transitions. [2020-10-28 12:13:32,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:13:32,799 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 431 [2020-10-28 12:13:32,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:13:32,827 INFO L225 Difference]: With dead ends: 34101 [2020-10-28 12:13:32,827 INFO L226 Difference]: Without dead ends: 17074 [2020-10-28 12:13:32,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:13:32,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17074 states. [2020-10-28 12:13:33,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17074 to 16457. [2020-10-28 12:13:33,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16457 states. [2020-10-28 12:13:33,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16457 states to 16457 states and 19033 transitions. [2020-10-28 12:13:33,088 INFO L78 Accepts]: Start accepts. Automaton has 16457 states and 19033 transitions. Word has length 431 [2020-10-28 12:13:33,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:13:33,089 INFO L481 AbstractCegarLoop]: Abstraction has 16457 states and 19033 transitions. [2020-10-28 12:13:33,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:13:33,089 INFO L276 IsEmpty]: Start isEmpty. Operand 16457 states and 19033 transitions. [2020-10-28 12:13:33,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-10-28 12:13:33,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:33,106 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2020-10-28 12:13:33,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 12:13:33,106 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:33,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:33,107 INFO L82 PathProgramCache]: Analyzing trace with hash -932618682, now seen corresponding path program 1 times [2020-10-28 12:13:33,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:33,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171936967] [2020-10-28 12:13:33,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:33,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:33,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:33,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:34,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:35,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:35,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 451 [2020-10-28 12:13:35,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:13:35,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2219 [2020-10-28 12:13:35,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:35,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:35,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:13:35,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-28 12:13:35,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-28 12:13:35,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:35,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:35,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:35,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:35,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:35,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:35,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:13:35,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:35,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:35,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:35,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:35,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:35,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:35,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:35,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:35,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:35,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:35,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:13:35,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:35,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 12:13:35,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:35,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:35,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:35,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:35,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:35,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:35,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:13:35,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:35,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:35,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:35,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 12:13:35,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:35,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 12:13:35,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:35,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:35,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:35,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:35,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:13:35,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:35,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 12:13:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:35,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:35,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:35,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:35,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 12:13:35,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:13:35,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-28 12:13:35,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:35,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:35,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:35,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:13:35,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 12:13:35,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:35,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-28 12:13:35,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:35,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:36,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:36,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:13:36,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:36,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-28 12:13:36,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:36,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:36,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:36,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:13:36,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:13:36,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:36,348 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 600 proven. 6 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-28 12:13:36,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171936967] [2020-10-28 12:13:36,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:13:36,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 12:13:36,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965602422] [2020-10-28 12:13:36,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 12:13:36,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:36,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 12:13:36,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-28 12:13:36,351 INFO L87 Difference]: Start difference. First operand 16457 states and 19033 transitions. Second operand 9 states. [2020-10-28 12:13:42,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:13:42,366 INFO L93 Difference]: Finished difference Result 36162 states and 42507 transitions. [2020-10-28 12:13:42,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 12:13:42,369 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 433 [2020-10-28 12:13:42,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:13:42,424 INFO L225 Difference]: With dead ends: 36162 [2020-10-28 12:13:42,424 INFO L226 Difference]: Without dead ends: 19519 [2020-10-28 12:13:42,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-28 12:13:42,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19519 states. [2020-10-28 12:13:42,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19519 to 19297. [2020-10-28 12:13:42,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19297 states. [2020-10-28 12:13:42,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19297 states to 19297 states and 22167 transitions. [2020-10-28 12:13:42,891 INFO L78 Accepts]: Start accepts. Automaton has 19297 states and 22167 transitions. Word has length 433 [2020-10-28 12:13:42,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:13:42,892 INFO L481 AbstractCegarLoop]: Abstraction has 19297 states and 22167 transitions. [2020-10-28 12:13:42,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 12:13:42,892 INFO L276 IsEmpty]: Start isEmpty. Operand 19297 states and 22167 transitions. [2020-10-28 12:13:42,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2020-10-28 12:13:42,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:42,915 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:13:42,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 12:13:42,915 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:42,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:42,916 INFO L82 PathProgramCache]: Analyzing trace with hash 285574498, now seen corresponding path program 1 times [2020-10-28 12:13:42,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:42,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503593512] [2020-10-28 12:13:42,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:43,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:43,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:43,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:48,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:48,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 475 [2020-10-28 12:13:48,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:13:48,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 12:13:48,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:48,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:48,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:48,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 325 [2020-10-28 12:13:48,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 12:13:48,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:48,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:48,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:48,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:48,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:48,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:48,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:48,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:13:48,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:48,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:48,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:48,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:48,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:48,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:48,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:48,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:48,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:48,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:13:48,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:48,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 12:13:48,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:48,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:48,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:48,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:48,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:48,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:48,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:13:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:48,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:48,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:48,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:13:48,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:48,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 12:13:48,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:48,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:48,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:48,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:48,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-28 12:13:48,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:48,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-28 12:13:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:48,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:48,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:48,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:13:48,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:48,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-28 12:13:48,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:48,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:48,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:48,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:13:48,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:13:48,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:49,006 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 319 proven. 2 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2020-10-28 12:13:49,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503593512] [2020-10-28 12:13:49,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:13:49,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:13:49,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146506278] [2020-10-28 12:13:49,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:13:49,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:49,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:13:49,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:13:49,009 INFO L87 Difference]: Start difference. First operand 19297 states and 22167 transitions. Second operand 7 states. [2020-10-28 12:13:53,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:13:53,225 INFO L93 Difference]: Finished difference Result 36195 states and 41725 transitions. [2020-10-28 12:13:53,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:13:53,227 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 459 [2020-10-28 12:13:53,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:13:53,267 INFO L225 Difference]: With dead ends: 36195 [2020-10-28 12:13:53,268 INFO L226 Difference]: Without dead ends: 19352 [2020-10-28 12:13:53,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:13:53,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19352 states. [2020-10-28 12:13:53,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19352 to 19306. [2020-10-28 12:13:53,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19306 states. [2020-10-28 12:13:53,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19306 states to 19306 states and 21978 transitions. [2020-10-28 12:13:53,727 INFO L78 Accepts]: Start accepts. Automaton has 19306 states and 21978 transitions. Word has length 459 [2020-10-28 12:13:53,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:13:53,728 INFO L481 AbstractCegarLoop]: Abstraction has 19306 states and 21978 transitions. [2020-10-28 12:13:53,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:13:53,728 INFO L276 IsEmpty]: Start isEmpty. Operand 19306 states and 21978 transitions. [2020-10-28 12:13:53,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2020-10-28 12:13:53,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:53,746 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:13:53,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 12:13:53,746 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:53,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:53,747 INFO L82 PathProgramCache]: Analyzing trace with hash -607169633, now seen corresponding path program 1 times [2020-10-28 12:13:53,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:53,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558798663] [2020-10-28 12:13:53,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:53,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:53,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:54,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:55,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:57,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:57,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 492 [2020-10-28 12:13:57,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:13:57,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3291 [2020-10-28 12:13:57,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:57,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:57,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 12:13:57,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 342 [2020-10-28 12:13:57,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-28 12:13:57,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:57,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:57,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:57,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:57,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:57,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:57,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:13:57,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:57,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:57,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:57,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:57,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:57,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:57,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:57,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:57,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:57,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 12:13:57,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:57,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 12:13:57,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:57,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:57,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:57,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:57,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:57,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:57,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-28 12:13:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:57,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:57,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:57,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:13:57,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:57,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-28 12:13:57,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:57,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:57,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:57,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:57,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:13:57,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:57,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-28 12:13:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:57,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:57,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:57,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:13:57,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:57,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-28 12:13:57,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:57,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:57,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 12:13:57,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:13:57,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:13:57,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:58,069 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 276 proven. 45 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2020-10-28 12:13:58,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558798663] [2020-10-28 12:13:58,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:13:58,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:13:58,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767919850] [2020-10-28 12:13:58,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:13:58,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:58,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:13:58,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:13:58,071 INFO L87 Difference]: Start difference. First operand 19306 states and 21978 transitions. Second operand 8 states. [2020-10-28 12:14:04,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:14:04,419 INFO L93 Difference]: Finished difference Result 43324 states and 50157 transitions. [2020-10-28 12:14:04,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:14:04,420 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 476 [2020-10-28 12:14:04,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:14:04,486 INFO L225 Difference]: With dead ends: 43324 [2020-10-28 12:14:04,486 INFO L226 Difference]: Without dead ends: 26852 [2020-10-28 12:14:04,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:14:04,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26852 states. [2020-10-28 12:14:04,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26852 to 24841. [2020-10-28 12:14:04,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24841 states. [2020-10-28 12:14:04,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24841 states to 24841 states and 28270 transitions. [2020-10-28 12:14:04,996 INFO L78 Accepts]: Start accepts. Automaton has 24841 states and 28270 transitions. Word has length 476 [2020-10-28 12:14:04,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:14:04,997 INFO L481 AbstractCegarLoop]: Abstraction has 24841 states and 28270 transitions. [2020-10-28 12:14:04,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:14:04,997 INFO L276 IsEmpty]: Start isEmpty. Operand 24841 states and 28270 transitions. [2020-10-28 12:14:05,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2020-10-28 12:14:05,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:14:05,027 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 12:14:05,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 12:14:05,027 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:14:05,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:14:05,028 INFO L82 PathProgramCache]: Analyzing trace with hash -946619780, now seen corresponding path program 1 times [2020-10-28 12:14:05,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:14:05,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020506584] [2020-10-28 12:14:05,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:14:05,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:05,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:05,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:05,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:05,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:05,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:06,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:06,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:07,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:07,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:08,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:09,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:10,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:10,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 661 [2020-10-28 12:14:10,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 12:14:10,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-28 12:14:10,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:10,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:10,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:14:10,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:14:10,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 453 [2020-10-28 12:14:10,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:10,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:14:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:10,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:10,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:10,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:14:10,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:10,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 12:14:10,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:10,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:10,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:14:10,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:10,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:14:10,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:10,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:14:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:10,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:10,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:10,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:10,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:14:10,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:14:10,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-28 12:14:10,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:10,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:10,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:14:10,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:10,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-28 12:14:10,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:10,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:14:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:10,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:10,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:10,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:10,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 12:14:10,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:14:10,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-28 12:14:10,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:10,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:10,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:14:10,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:10,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-28 12:14:10,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:10,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-28 12:14:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:10,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:10,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:11,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:11,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-28 12:14:11,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:14:11,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-28 12:14:11,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:11,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:11,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:14:11,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-10-28 12:14:11,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 12:14:11,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:11,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-10-28 12:14:11,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:11,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:11,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:11,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:14:11,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:11,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 12:14:11,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:11,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:11,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:14:11,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-28 12:14:11,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:14:11,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:11,473 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 792 trivial. 0 not checked. [2020-10-28 12:14:11,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020506584] [2020-10-28 12:14:11,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:14:11,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:14:11,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410649958] [2020-10-28 12:14:11,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:14:11,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:14:11,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:14:11,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:14:11,475 INFO L87 Difference]: Start difference. First operand 24841 states and 28270 transitions. Second operand 6 states. [2020-10-28 12:14:13,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:14:13,723 INFO L93 Difference]: Finished difference Result 45327 states and 51690 transitions. [2020-10-28 12:14:13,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:14:13,724 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 643 [2020-10-28 12:14:13,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:14:13,768 INFO L225 Difference]: With dead ends: 45327 [2020-10-28 12:14:13,768 INFO L226 Difference]: Without dead ends: 24268 [2020-10-28 12:14:13,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:14:13,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24268 states. [2020-10-28 12:14:14,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24268 to 24236. [2020-10-28 12:14:14,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24236 states. [2020-10-28 12:14:14,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24236 states to 24236 states and 27555 transitions. [2020-10-28 12:14:14,232 INFO L78 Accepts]: Start accepts. Automaton has 24236 states and 27555 transitions. Word has length 643 [2020-10-28 12:14:14,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:14:14,233 INFO L481 AbstractCegarLoop]: Abstraction has 24236 states and 27555 transitions. [2020-10-28 12:14:14,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:14:14,233 INFO L276 IsEmpty]: Start isEmpty. Operand 24236 states and 27555 transitions. [2020-10-28 12:14:14,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2020-10-28 12:14:14,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:14:14,273 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:14:14,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 12:14:14,273 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:14:14,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:14:14,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1658404072, now seen corresponding path program 1 times [2020-10-28 12:14:14,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:14:14,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525679695] [2020-10-28 12:14:14,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:14:14,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:14,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:14,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:14,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:15,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:19,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:19,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 726 [2020-10-28 12:14:19,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:14:19,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5109 [2020-10-28 12:14:19,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:19,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:19,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:14:19,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 576 [2020-10-28 12:14:19,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 12:14:19,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:19,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:14:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:19,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:19,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:19,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:14:19,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:19,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:14:19,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:19,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:19,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:14:19,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:19,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:14:19,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:19,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:14:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:19,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:19,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:19,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:14:19,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:19,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 12:14:19,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:19,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:19,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:14:19,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:19,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:14:19,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:19,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:14:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:19,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:19,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:19,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:14:19,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:19,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:14:19,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:19,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:19,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:14:19,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:19,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:14:19,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:19,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:14:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:19,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:19,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:19,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 12:14:19,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:19,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 12:14:19,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:19,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:19,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:14:19,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:19,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:14:19,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:19,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-28 12:14:19,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:19,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:20,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:20,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 12:14:20,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:20,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 12:14:20,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:20,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:20,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:14:20,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:20,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:14:20,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:20,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2020-10-28 12:14:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:20,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:20,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:20,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 12:14:20,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:20,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 12:14:20,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:20,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:20,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:14:20,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:20,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 12:14:20,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:20,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2020-10-28 12:14:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:20,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:20,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:20,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:14:20,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:20,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 12:14:20,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:20,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:20,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:14:20,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:14:20,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:14:20,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:21,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1710 backedges. 731 proven. 2 refuted. 0 times theorem prover too weak. 977 trivial. 0 not checked. [2020-10-28 12:14:21,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525679695] [2020-10-28 12:14:21,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:14:21,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:14:21,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721375733] [2020-10-28 12:14:21,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:14:21,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:14:21,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:14:21,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:14:21,042 INFO L87 Difference]: Start difference. First operand 24236 states and 27555 transitions. Second operand 7 states. [2020-10-28 12:14:25,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:14:25,552 INFO L93 Difference]: Finished difference Result 44531 states and 50694 transitions. [2020-10-28 12:14:25,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:14:25,554 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 704 [2020-10-28 12:14:25,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:14:25,595 INFO L225 Difference]: With dead ends: 44531 [2020-10-28 12:14:25,595 INFO L226 Difference]: Without dead ends: 24077 [2020-10-28 12:14:25,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:14:25,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24077 states.