/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:39:59,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:39:59,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:39:59,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:39:59,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:39:59,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:39:59,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:39:59,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:39:59,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:39:59,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:39:59,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:39:59,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:39:59,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:39:59,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:39:59,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:39:59,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:39:59,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:39:59,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:39:59,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:39:59,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:40:00,002 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:40:00,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:40:00,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:40:00,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:40:00,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:40:00,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:40:00,010 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:40:00,011 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:40:00,012 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:40:00,013 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:40:00,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:40:00,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:40:00,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:40:00,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:40:00,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:40:00,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:40:00,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:40:00,020 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:40:00,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:40:00,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:40:00,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:40:00,024 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 07:40:00,060 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:40:00,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:40:00,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:40:00,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:40:00,066 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:40:00,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:40:00,067 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:40:00,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:40:00,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:40:00,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:40:00,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:40:00,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:40:00,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:40:00,070 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:40:00,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:40:00,070 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:40:00,070 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:40:00,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:40:00,071 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:40:00,071 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:40:00,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:40:00,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:40:00,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:40:00,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:40:00,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:40:00,086 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:40:00,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:40:00,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:40:00,087 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:40:00,087 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:40:00,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:40:00,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:40:00,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:40:00,521 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:40:00,522 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:40:00,524 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label04.c [2020-10-29 07:40:00,612 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b5980fd1/de2c984d517b4fdca10631990ff55c12/FLAG61d0d9231 [2020-10-29 07:40:01,489 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:40:01,490 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label04.c [2020-10-29 07:40:01,519 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b5980fd1/de2c984d517b4fdca10631990ff55c12/FLAG61d0d9231 [2020-10-29 07:40:01,598 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b5980fd1/de2c984d517b4fdca10631990ff55c12 [2020-10-29 07:40:01,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:40:01,608 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:40:01,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:40:01,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:40:01,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:40:01,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:40:01" (1/1) ... [2020-10-29 07:40:01,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ea3926d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:40:01, skipping insertion in model container [2020-10-29 07:40:01,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:40:01" (1/1) ... [2020-10-29 07:40:01,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:40:01,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:40:02,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:40:02,723 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:40:03,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:40:03,149 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:40:03,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:40:03 WrapperNode [2020-10-29 07:40:03,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:40:03,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:40:03,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:40:03,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:40:03,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:40:03" (1/1) ... [2020-10-29 07:40:03,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:40:03" (1/1) ... [2020-10-29 07:40:03,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:40:03" (1/1) ... [2020-10-29 07:40:03,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:40:03" (1/1) ... [2020-10-29 07:40:03,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:40:03" (1/1) ... [2020-10-29 07:40:03,384 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:40:03" (1/1) ... [2020-10-29 07:40:03,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:40:03" (1/1) ... [2020-10-29 07:40:03,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:40:03,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:40:03,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:40:03,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:40:03,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:40:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:40:03,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:40:03,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:40:03,514 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:40:03,514 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:40:03,514 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:40:03,514 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:40:03,515 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:40:03,515 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:40:03,515 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:40:03,515 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:40:03,515 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:40:03,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:40:03,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:40:03,516 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:40:03,516 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:40:03,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:40:03,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:40:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:40:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:40:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:40:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:40:06,793 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:40:06,794 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:40:06,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:40:06 BoogieIcfgContainer [2020-10-29 07:40:06,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:40:06,802 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:40:06,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:40:06,806 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:40:06,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:40:01" (1/3) ... [2020-10-29 07:40:06,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@593cd6a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:40:06, skipping insertion in model container [2020-10-29 07:40:06,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:40:03" (2/3) ... [2020-10-29 07:40:06,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@593cd6a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:40:06, skipping insertion in model container [2020-10-29 07:40:06,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:40:06" (3/3) ... [2020-10-29 07:40:06,811 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label04.c [2020-10-29 07:40:06,825 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:40:06,831 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:40:06,846 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:40:06,892 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:40:06,893 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:40:06,893 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:40:06,893 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:40:06,893 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:40:06,893 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:40:06,893 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:40:06,893 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:40:06,937 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-29 07:40:06,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 07:40:06,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:40:06,945 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] [2020-10-29 07:40:06,946 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:40:06,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:40:06,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1376146487, now seen corresponding path program 1 times [2020-10-29 07:40:06,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:40:06,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605774908] [2020-10-29 07:40:06,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:40:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:07,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:07,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:07,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 07:40:07,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:07,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 514 [2020-10-29 07:40:07,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:07,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:07,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:40:07,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:40:07,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 07:40:07,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:40:07,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:40:07,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:07,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:07,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:07,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:40:07,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:07,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 07:40:07,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:07,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:07,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:40:07,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:07,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:40:07,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:40:07,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:40:07,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605774908] [2020-10-29 07:40:07,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:40:07,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 07:40:07,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943344690] [2020-10-29 07:40:08,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:40:08,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:40:08,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:40:08,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:40:08,027 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 5 states. [2020-10-29 07:40:19,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:40:19,162 INFO L93 Difference]: Finished difference Result 1535 states and 2809 transitions. [2020-10-29 07:40:19,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:40:19,164 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-10-29 07:40:19,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:40:19,189 INFO L225 Difference]: With dead ends: 1535 [2020-10-29 07:40:19,189 INFO L226 Difference]: Without dead ends: 1026 [2020-10-29 07:40:19,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:40:19,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2020-10-29 07:40:19,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1018. [2020-10-29 07:40:19,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1018 states. [2020-10-29 07:40:19,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1543 transitions. [2020-10-29 07:40:19,361 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1543 transitions. Word has length 38 [2020-10-29 07:40:19,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:40:19,361 INFO L481 AbstractCegarLoop]: Abstraction has 1018 states and 1543 transitions. [2020-10-29 07:40:19,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:40:19,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1543 transitions. [2020-10-29 07:40:19,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-29 07:40:19,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:40:19,385 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:40:19,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:40:19,386 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:40:19,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:40:19,387 INFO L82 PathProgramCache]: Analyzing trace with hash 112133878, now seen corresponding path program 1 times [2020-10-29 07:40:19,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:40:19,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740095534] [2020-10-29 07:40:19,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:40:19,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:19,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:19,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:20,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:20,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:21,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:21,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-29 07:40:21,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:40:21,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2128 [2020-10-29 07:40:21,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:21,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:21,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:40:21,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:40:21,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 07:40:21,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:40:21,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:40:21,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:21,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:21,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:21,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:40:21,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:21,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 07:40:21,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:21,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:21,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:40:21,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:21,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:40:21,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 07:40:21,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:40:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:21,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:22,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:22,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 07:40:22,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:22,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-29 07:40:22,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:22,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:22,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:40:22,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:40:22,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 07:40:22,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:40:22,398 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:40:22,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740095534] [2020-10-29 07:40:22,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:40:22,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:40:22,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734034660] [2020-10-29 07:40:22,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:40:22,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:40:22,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:40:22,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:40:22,409 INFO L87 Difference]: Start difference. First operand 1018 states and 1543 transitions. Second operand 7 states. [2020-10-29 07:40:34,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:40:34,021 INFO L93 Difference]: Finished difference Result 3008 states and 4605 transitions. [2020-10-29 07:40:34,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:40:34,022 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 161 [2020-10-29 07:40:34,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:40:34,043 INFO L225 Difference]: With dead ends: 3008 [2020-10-29 07:40:34,043 INFO L226 Difference]: Without dead ends: 1996 [2020-10-29 07:40:34,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:40:34,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1996 states. [2020-10-29 07:40:34,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1996 to 1957. [2020-10-29 07:40:34,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1957 states. [2020-10-29 07:40:34,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 2620 transitions. [2020-10-29 07:40:34,150 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 2620 transitions. Word has length 161 [2020-10-29 07:40:34,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:40:34,154 INFO L481 AbstractCegarLoop]: Abstraction has 1957 states and 2620 transitions. [2020-10-29 07:40:34,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:40:34,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 2620 transitions. [2020-10-29 07:40:34,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-29 07:40:34,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:40:34,164 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:40:34,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:40:34,166 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:40:34,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:40:34,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1159582390, now seen corresponding path program 1 times [2020-10-29 07:40:34,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:40:34,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799114812] [2020-10-29 07:40:34,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:40:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:34,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:34,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:36,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:36,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-29 07:40:36,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:40:36,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2510 [2020-10-29 07:40:36,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:36,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:36,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:40:36,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:40:36,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 315 [2020-10-29 07:40:36,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:37,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:40:37,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:37,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:37,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:37,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:40:37,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:37,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 07:40:37,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:37,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:37,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:40:37,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:37,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:40:37,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:40:37,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:40:37,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:37,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:37,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:37,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:40:37,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:37,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 646 [2020-10-29 07:40:37,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:37,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:37,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:40:37,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:40:37,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-29 07:40:37,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:40:38,332 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:40:38,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799114812] [2020-10-29 07:40:38,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:40:38,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:40:38,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347520824] [2020-10-29 07:40:38,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:40:38,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:40:38,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:40:38,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:40:38,340 INFO L87 Difference]: Start difference. First operand 1957 states and 2620 transitions. Second operand 6 states. [2020-10-29 07:40:46,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:40:46,257 INFO L93 Difference]: Finished difference Result 4858 states and 6731 transitions. [2020-10-29 07:40:46,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:40:46,262 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 312 [2020-10-29 07:40:46,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:40:46,284 INFO L225 Difference]: With dead ends: 4858 [2020-10-29 07:40:46,284 INFO L226 Difference]: Without dead ends: 3839 [2020-10-29 07:40:46,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:40:46,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3839 states. [2020-10-29 07:40:46,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3839 to 3214. [2020-10-29 07:40:46,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3214 states. [2020-10-29 07:40:46,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3214 states to 3214 states and 4037 transitions. [2020-10-29 07:40:46,393 INFO L78 Accepts]: Start accepts. Automaton has 3214 states and 4037 transitions. Word has length 312 [2020-10-29 07:40:46,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:40:46,395 INFO L481 AbstractCegarLoop]: Abstraction has 3214 states and 4037 transitions. [2020-10-29 07:40:46,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:40:46,395 INFO L276 IsEmpty]: Start isEmpty. Operand 3214 states and 4037 transitions. [2020-10-29 07:40:46,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-29 07:40:46,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:40:46,402 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:40:46,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:40:46,403 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:40:46,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:40:46,403 INFO L82 PathProgramCache]: Analyzing trace with hash -557631935, now seen corresponding path program 1 times [2020-10-29 07:40:46,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:40:46,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422997562] [2020-10-29 07:40:46,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:40:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:46,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:46,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:48,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:51,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:51,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-29 07:40:51,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:40:51,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-29 07:40:51,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:51,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:51,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:40:51,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:40:51,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 07:40:51,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:51,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:40:51,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:51,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:51,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:51,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:40:51,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:51,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:40:51,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:51,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:51,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:40:51,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:51,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:40:51,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:40:51,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:40:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:51,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:52,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:52,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:40:52,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:52,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-10-29 07:40:52,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:52,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:52,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:40:52,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:40:52,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:40:52,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:40:52,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 07:40:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:52,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:52,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:52,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 07:40:52,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:52,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 07:40:52,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:52,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:52,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:52,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-29 07:40:52,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:52,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:53,002 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 60 proven. 80 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:40:53,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422997562] [2020-10-29 07:40:53,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:40:53,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:40:53,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908551944] [2020-10-29 07:40:53,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:40:53,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:40:53,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:40:53,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:40:53,005 INFO L87 Difference]: Start difference. First operand 3214 states and 4037 transitions. Second operand 7 states. [2020-10-29 07:41:03,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:41:03,306 INFO L93 Difference]: Finished difference Result 6167 states and 7840 transitions. [2020-10-29 07:41:03,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:41:03,309 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 323 [2020-10-29 07:41:03,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:41:03,329 INFO L225 Difference]: With dead ends: 6167 [2020-10-29 07:41:03,329 INFO L226 Difference]: Without dead ends: 3266 [2020-10-29 07:41:03,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:41:03,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3266 states. [2020-10-29 07:41:03,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3266 to 3223. [2020-10-29 07:41:03,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3223 states. [2020-10-29 07:41:03,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3223 states to 3223 states and 4048 transitions. [2020-10-29 07:41:03,443 INFO L78 Accepts]: Start accepts. Automaton has 3223 states and 4048 transitions. Word has length 323 [2020-10-29 07:41:03,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:41:03,444 INFO L481 AbstractCegarLoop]: Abstraction has 3223 states and 4048 transitions. [2020-10-29 07:41:03,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:41:03,445 INFO L276 IsEmpty]: Start isEmpty. Operand 3223 states and 4048 transitions. [2020-10-29 07:41:03,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2020-10-29 07:41:03,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:41:03,454 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:41:03,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:41:03,454 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:41:03,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:41:03,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1550732470, now seen corresponding path program 1 times [2020-10-29 07:41:03,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:41:03,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093001831] [2020-10-29 07:41:03,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:41:03,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:03,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:04,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:05,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:05,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 411 [2020-10-29 07:41:05,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:41:05,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2048 [2020-10-29 07:41:05,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:05,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:05,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:41:05,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:41:05,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:41:05,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:05,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:41:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:05,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:05,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:05,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:41:05,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:05,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 07:41:05,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:05,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:05,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:41:05,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:05,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:41:05,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:41:05,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:41:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:05,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:06,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:06,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:41:06,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:06,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-29 07:41:06,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:06,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:06,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:41:06,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:06,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:41:06,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:41:06,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:41:06,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:06,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:06,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:06,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 07:41:06,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:06,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-29 07:41:06,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:06,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:06,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:41:06,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:41:06,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:41:06,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:06,751 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:41:06,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093001831] [2020-10-29 07:41:06,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:41:06,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:41:06,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614629556] [2020-10-29 07:41:06,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:41:06,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:41:06,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:41:06,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:41:06,754 INFO L87 Difference]: Start difference. First operand 3223 states and 4048 transitions. Second operand 7 states. [2020-10-29 07:41:17,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:41:17,731 INFO L93 Difference]: Finished difference Result 6838 states and 8654 transitions. [2020-10-29 07:41:17,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:41:17,733 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 397 [2020-10-29 07:41:17,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:41:17,754 INFO L225 Difference]: With dead ends: 6838 [2020-10-29 07:41:17,754 INFO L226 Difference]: Without dead ends: 3928 [2020-10-29 07:41:17,762 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 [2020-10-29 07:41:17,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3928 states. [2020-10-29 07:41:17,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3928 to 3870. [2020-10-29 07:41:17,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3870 states. [2020-10-29 07:41:17,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3870 states to 3870 states and 4503 transitions. [2020-10-29 07:41:17,880 INFO L78 Accepts]: Start accepts. Automaton has 3870 states and 4503 transitions. Word has length 397 [2020-10-29 07:41:17,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:41:17,881 INFO L481 AbstractCegarLoop]: Abstraction has 3870 states and 4503 transitions. [2020-10-29 07:41:17,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:41:17,882 INFO L276 IsEmpty]: Start isEmpty. Operand 3870 states and 4503 transitions. [2020-10-29 07:41:17,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-10-29 07:41:17,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:41:17,892 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:41:17,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:41:17,892 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:41:17,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:41:17,893 INFO L82 PathProgramCache]: Analyzing trace with hash 146001769, now seen corresponding path program 1 times [2020-10-29 07:41:17,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:41:17,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107470633] [2020-10-29 07:41:17,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:41:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:18,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:18,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:18,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:19,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:23,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:23,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-10-29 07:41:23,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:41:23,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 07:41:23,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:23,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:23,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 07:41:23,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:41:23,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 412 [2020-10-29 07:41:23,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:23,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:41:23,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:23,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:23,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:23,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:41:23,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:23,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:41:23,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:23,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:23,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:41:23,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:23,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:41:23,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:41:23,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:41:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:23,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:23,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:23,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:23,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:41:23,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:41:23,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-29 07:41:23,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:23,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:23,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:41:23,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:23,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:41:23,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:41:23,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:41:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:23,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:23,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:24,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:24,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:41:24,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:41:24,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1060 [2020-10-29 07:41:24,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:24,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:24,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:41:24,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:24,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:41:24,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:41:25,143 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 52 proven. 11 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-29 07:41:25,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107470633] [2020-10-29 07:41:25,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:41:25,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:41:25,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387974661] [2020-10-29 07:41:25,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:41:25,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:41:25,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:41:25,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:41:25,146 INFO L87 Difference]: Start difference. First operand 3870 states and 4503 transitions. Second operand 7 states. [2020-10-29 07:41:43,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:41:43,789 INFO L93 Difference]: Finished difference Result 8376 states and 10352 transitions. [2020-10-29 07:41:43,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:41:43,791 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 407 [2020-10-29 07:41:43,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:41:43,830 INFO L225 Difference]: With dead ends: 8376 [2020-10-29 07:41:43,830 INFO L226 Difference]: Without dead ends: 6383 [2020-10-29 07:41:43,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-29 07:41:43,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6383 states. [2020-10-29 07:41:43,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6383 to 4805. [2020-10-29 07:41:43,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4805 states. [2020-10-29 07:41:44,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4805 states to 4805 states and 5604 transitions. [2020-10-29 07:41:44,008 INFO L78 Accepts]: Start accepts. Automaton has 4805 states and 5604 transitions. Word has length 407 [2020-10-29 07:41:44,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:41:44,009 INFO L481 AbstractCegarLoop]: Abstraction has 4805 states and 5604 transitions. [2020-10-29 07:41:44,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:41:44,010 INFO L276 IsEmpty]: Start isEmpty. Operand 4805 states and 5604 transitions. [2020-10-29 07:41:44,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2020-10-29 07:41:44,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:41:44,028 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:41:44,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:41:44,029 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:41:44,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:41:44,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1913792973, now seen corresponding path program 1 times [2020-10-29 07:41:44,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:41:44,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553785391] [2020-10-29 07:41:44,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:41:44,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:44,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:44,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:44,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:45,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:45,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:49,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:49,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 531 [2020-10-29 07:41:49,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:41:49,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-29 07:41:49,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:49,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:49,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:41:49,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 07:41:49,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-29 07:41:49,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:49,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:41:49,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:49,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:49,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:49,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:41:49,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:49,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:41:49,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:49,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:49,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:41:49,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:49,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:41:49,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:49,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:41:49,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:49,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:49,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:49,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:41:49,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:49,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-29 07:41:49,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:49,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:49,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:41:49,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:49,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:41:49,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:49,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:41:49,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:49,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:50,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:50,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:41:50,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:50,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-29 07:41:50,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:50,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:50,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:41:50,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:41:50,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:41:50,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:50,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-29 07:41:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:50,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:50,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:50,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:41:50,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:50,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 07:41:50,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:50,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:50,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:41:50,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 07:41:50,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:41:50,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:41:50,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-29 07:41:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:50,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:50,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:50,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 07:41:50,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:50,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 07:41:50,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:50,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:50,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:41:50,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-29 07:41:50,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:41:50,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:50,697 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 220 proven. 176 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2020-10-29 07:41:50,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553785391] [2020-10-29 07:41:50,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:41:50,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:41:50,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795509744] [2020-10-29 07:41:50,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:41:50,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:41:50,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:41:50,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:41:50,700 INFO L87 Difference]: Start difference. First operand 4805 states and 5604 transitions. Second operand 7 states. [2020-10-29 07:41:53,567 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-29 07:42:07,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:42:07,970 INFO L93 Difference]: Finished difference Result 10324 states and 12401 transitions. [2020-10-29 07:42:07,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:42:07,973 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 513 [2020-10-29 07:42:07,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:42:08,013 INFO L225 Difference]: With dead ends: 10324 [2020-10-29 07:42:08,013 INFO L226 Difference]: Without dead ends: 6139 [2020-10-29 07:42:08,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:42:08,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6139 states. [2020-10-29 07:42:08,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6139 to 6110. [2020-10-29 07:42:08,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6110 states. [2020-10-29 07:42:08,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6110 states to 6110 states and 7015 transitions. [2020-10-29 07:42:08,188 INFO L78 Accepts]: Start accepts. Automaton has 6110 states and 7015 transitions. Word has length 513 [2020-10-29 07:42:08,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:42:08,189 INFO L481 AbstractCegarLoop]: Abstraction has 6110 states and 7015 transitions. [2020-10-29 07:42:08,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:42:08,189 INFO L276 IsEmpty]: Start isEmpty. Operand 6110 states and 7015 transitions. [2020-10-29 07:42:08,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2020-10-29 07:42:08,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:42:08,205 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:42:08,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:42:08,205 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:42:08,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:42:08,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1747506078, now seen corresponding path program 1 times [2020-10-29 07:42:08,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:42:08,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850324264] [2020-10-29 07:42:08,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:42:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:08,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:08,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:09,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:10,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:13,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:13,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 539 [2020-10-29 07:42:13,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:42:13,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5098 [2020-10-29 07:42:13,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:13,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:13,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:13,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:42:13,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:42:13,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:42:13,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:42:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:13,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:13,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:13,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:42:13,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:13,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:42:13,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:13,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:13,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:42:13,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:13,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:42:13,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:13,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:42:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:13,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:14,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:14,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:42:14,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:14,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-29 07:42:14,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:14,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:14,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:42:14,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:14,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:42:14,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:14,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:42:14,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:14,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:14,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:14,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:42:14,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:14,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-29 07:42:14,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:14,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:14,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:14,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:42:14,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:42:14,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:14,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-29 07:42:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:14,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:14,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:14,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 07:42:14,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:14,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 07:42:14,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:14,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:14,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:42:14,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-29 07:42:14,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:42:14,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:15,074 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 202 proven. 99 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-29 07:42:15,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850324264] [2020-10-29 07:42:15,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:42:15,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:42:15,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507283317] [2020-10-29 07:42:15,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:42:15,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:42:15,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:42:15,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:42:15,077 INFO L87 Difference]: Start difference. First operand 6110 states and 7015 transitions. Second operand 7 states. [2020-10-29 07:42:17,247 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 07:42:28,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:42:28,363 INFO L93 Difference]: Finished difference Result 14517 states and 16704 transitions. [2020-10-29 07:42:28,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:42:28,365 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 523 [2020-10-29 07:42:28,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:42:28,395 INFO L225 Difference]: With dead ends: 14517 [2020-10-29 07:42:28,395 INFO L226 Difference]: Without dead ends: 8720 [2020-10-29 07:42:28,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:42:28,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8720 states. [2020-10-29 07:42:28,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8720 to 8346. [2020-10-29 07:42:28,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8346 states. [2020-10-29 07:42:28,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8346 states to 8346 states and 9456 transitions. [2020-10-29 07:42:28,693 INFO L78 Accepts]: Start accepts. Automaton has 8346 states and 9456 transitions. Word has length 523 [2020-10-29 07:42:28,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:42:28,694 INFO L481 AbstractCegarLoop]: Abstraction has 8346 states and 9456 transitions. [2020-10-29 07:42:28,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:42:28,695 INFO L276 IsEmpty]: Start isEmpty. Operand 8346 states and 9456 transitions. [2020-10-29 07:42:28,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2020-10-29 07:42:28,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:42:28,712 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:42:28,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:42:28,712 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:42:28,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:42:28,713 INFO L82 PathProgramCache]: Analyzing trace with hash -893666538, now seen corresponding path program 1 times [2020-10-29 07:42:28,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:42:28,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449395185] [2020-10-29 07:42:28,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:42:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:28,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:29,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:30,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:31,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:31,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 551 [2020-10-29 07:42:31,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:42:31,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2805 [2020-10-29 07:42:31,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:31,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:31,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:31,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:42:31,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 07:42:31,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:31,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:42:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:31,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:31,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:31,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:42:31,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:31,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:42:31,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:31,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:31,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:42:31,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:31,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:42:31,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:31,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:42:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:31,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:31,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:31,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:42:31,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:31,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 07:42:31,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:31,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:31,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:42:31,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:31,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:42:31,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:32,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:42:32,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:32,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:32,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:32,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:42:32,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:32,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-29 07:42:32,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:32,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:32,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:42:32,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:32,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:42:32,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:32,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:42:32,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:32,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:32,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:32,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 07:42:32,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:32,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-29 07:42:32,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:32,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:32,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:32,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:42:32,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 07:42:32,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:32,633 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 289 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:42:32,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449395185] [2020-10-29 07:42:32,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:42:32,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:42:32,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684172144] [2020-10-29 07:42:32,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:42:32,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:42:32,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:42:32,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:42:32,637 INFO L87 Difference]: Start difference. First operand 8346 states and 9456 transitions. Second operand 7 states. [2020-10-29 07:42:45,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:42:45,570 INFO L93 Difference]: Finished difference Result 18334 states and 21310 transitions. [2020-10-29 07:42:45,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:42:45,573 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 535 [2020-10-29 07:42:45,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:42:45,607 INFO L225 Difference]: With dead ends: 18334 [2020-10-29 07:42:45,607 INFO L226 Difference]: Without dead ends: 10301 [2020-10-29 07:42:45,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:42:45,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10301 states. [2020-10-29 07:42:45,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10301 to 10249. [2020-10-29 07:42:45,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10249 states. [2020-10-29 07:42:45,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10249 states to 10249 states and 11778 transitions. [2020-10-29 07:42:45,894 INFO L78 Accepts]: Start accepts. Automaton has 10249 states and 11778 transitions. Word has length 535 [2020-10-29 07:42:45,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:42:45,896 INFO L481 AbstractCegarLoop]: Abstraction has 10249 states and 11778 transitions. [2020-10-29 07:42:45,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:42:45,896 INFO L276 IsEmpty]: Start isEmpty. Operand 10249 states and 11778 transitions. [2020-10-29 07:42:45,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 564 [2020-10-29 07:42:45,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:42:45,909 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:42:45,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:42:45,910 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:42:45,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:42:45,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1348425589, now seen corresponding path program 1 times [2020-10-29 07:42:45,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:42:45,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546361999] [2020-10-29 07:42:45,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:42:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:46,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:46,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:48,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:49,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:49,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 579 [2020-10-29 07:42:49,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:42:49,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3136 [2020-10-29 07:42:49,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:49,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:49,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:49,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:42:49,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 07:42:49,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:49,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:42:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:49,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:49,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:49,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:42:49,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:49,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:42:49,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:49,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:49,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:42:49,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:49,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:42:49,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:49,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:42:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:49,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:49,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:49,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:42:49,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:49,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 07:42:49,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:49,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:49,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:42:49,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:49,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:42:49,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:49,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:42:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:49,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:49,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:49,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:42:49,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:49,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-29 07:42:49,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:49,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:49,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:42:49,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:49,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:42:49,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:49,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:42:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:49,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:49,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:49,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 07:42:49,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:49,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-29 07:42:49,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:49,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:49,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:49,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:42:49,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 07:42:49,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:50,266 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 326 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:42:50,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546361999] [2020-10-29 07:42:50,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:42:50,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:42:50,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250475257] [2020-10-29 07:42:50,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:42:50,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:42:50,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:42:50,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:42:50,269 INFO L87 Difference]: Start difference. First operand 10249 states and 11778 transitions. Second operand 7 states. [2020-10-29 07:43:08,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:43:08,378 INFO L93 Difference]: Finished difference Result 19079 states and 23283 transitions. [2020-10-29 07:43:08,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:43:08,381 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 563 [2020-10-29 07:43:08,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:43:08,437 INFO L225 Difference]: With dead ends: 19079 [2020-10-29 07:43:08,437 INFO L226 Difference]: Without dead ends: 11948 [2020-10-29 07:43:08,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:43:08,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11948 states. [2020-10-29 07:43:08,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11948 to 11866. [2020-10-29 07:43:08,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11866 states. [2020-10-29 07:43:08,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11866 states to 11866 states and 13857 transitions. [2020-10-29 07:43:08,930 INFO L78 Accepts]: Start accepts. Automaton has 11866 states and 13857 transitions. Word has length 563 [2020-10-29 07:43:08,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:43:08,932 INFO L481 AbstractCegarLoop]: Abstraction has 11866 states and 13857 transitions. [2020-10-29 07:43:08,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:43:08,932 INFO L276 IsEmpty]: Start isEmpty. Operand 11866 states and 13857 transitions. [2020-10-29 07:43:08,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2020-10-29 07:43:08,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:43:08,953 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:43:08,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:43:08,953 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:43:08,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:43:08,955 INFO L82 PathProgramCache]: Analyzing trace with hash 546212696, now seen corresponding path program 1 times [2020-10-29 07:43:08,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:43:08,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404141434] [2020-10-29 07:43:08,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:43:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:09,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:09,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:11,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:13,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:14,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:14,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 681 [2020-10-29 07:43:14,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:43:14,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5181 [2020-10-29 07:43:14,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:14,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:14,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:14,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:43:14,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-29 07:43:14,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:43:14,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:43:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:14,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:14,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:14,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:43:14,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:14,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:43:14,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:14,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:14,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:14,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:14,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:14,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:14,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:43:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:14,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:14,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:14,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:43:14,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:14,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-29 07:43:14,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:14,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:14,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:14,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:14,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:14,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:14,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:43:14,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:14,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:14,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:14,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:43:14,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:14,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 07:43:14,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:14,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:14,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:43:14,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:14,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:43:14,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:15,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:43:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:15,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:15,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:15,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 07:43:15,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:15,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-29 07:43:15,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:15,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:15,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:15,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:43:15,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 07:43:15,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:15,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-10-29 07:43:15,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:15,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:15,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:15,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 07:43:15,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:15,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 07:43:15,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:15,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:15,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:15,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-29 07:43:15,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:15,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:15,683 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 366 proven. 99 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2020-10-29 07:43:15,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404141434] [2020-10-29 07:43:15,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:43:15,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:43:15,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815251807] [2020-10-29 07:43:15,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:43:15,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:43:15,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:43:15,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:43:15,685 INFO L87 Difference]: Start difference. First operand 11866 states and 13857 transitions. Second operand 7 states. [2020-10-29 07:43:35,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:43:35,559 INFO L93 Difference]: Finished difference Result 23107 states and 27888 transitions. [2020-10-29 07:43:35,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:43:35,561 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 663 [2020-10-29 07:43:35,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:43:35,626 INFO L225 Difference]: With dead ends: 23107 [2020-10-29 07:43:35,626 INFO L226 Difference]: Without dead ends: 14359 [2020-10-29 07:43:35,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:43:35,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14359 states. [2020-10-29 07:43:35,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14359 to 13733. [2020-10-29 07:43:35,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13733 states. [2020-10-29 07:43:35,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13733 states to 13733 states and 16283 transitions. [2020-10-29 07:43:35,967 INFO L78 Accepts]: Start accepts. Automaton has 13733 states and 16283 transitions. Word has length 663 [2020-10-29 07:43:35,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:43:35,969 INFO L481 AbstractCegarLoop]: Abstraction has 13733 states and 16283 transitions. [2020-10-29 07:43:35,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:43:35,969 INFO L276 IsEmpty]: Start isEmpty. Operand 13733 states and 16283 transitions. [2020-10-29 07:43:35,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 693 [2020-10-29 07:43:35,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:43:35,990 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:43:35,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:43:35,990 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:43:35,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:43:35,991 INFO L82 PathProgramCache]: Analyzing trace with hash 2013288874, now seen corresponding path program 1 times [2020-10-29 07:43:35,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:43:35,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689905138] [2020-10-29 07:43:35,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:43:36,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:36,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:36,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:37,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:38,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:39,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:39,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:41,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:41,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 710 [2020-10-29 07:43:41,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:43:41,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 07:43:41,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:41,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:41,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:41,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:43:41,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-29 07:43:41,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:41,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:43:41,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:41,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:41,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:41,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:43:41,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:41,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:43:41,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:41,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:41,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:41,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:41,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:41,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:41,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:43:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:41,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:41,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:41,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:43:41,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:41,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 07:43:41,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:41,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:41,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:41,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:41,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:41,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:41,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:43:41,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:41,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:41,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:41,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:43:41,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:41,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 07:43:41,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:41,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:41,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:43:41,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:41,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:43:41,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:41,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:43:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:41,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:41,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking...