/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/Problem18_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:30:00,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:30:00,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:30:00,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:30:00,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:30:00,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:30:00,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:30:00,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:30:00,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:30:00,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:30:00,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:30:00,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:30:00,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:30:00,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:30:00,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:30:00,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:30:00,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:30:00,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:30:00,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:30:00,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:30:00,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:30:00,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:30:00,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:30:00,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:30:00,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:30:00,994 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:30:00,995 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:30:00,997 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:30:00,997 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:30:01,000 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:30:01,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:30:01,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:30:01,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:30:01,004 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:30:01,006 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:30:01,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:30:01,007 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:30:01,007 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:30:01,007 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:30:01,008 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:30:01,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:30:01,010 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 08:30:01,076 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:30:01,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:30:01,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:30:01,079 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:30:01,079 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:30:01,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:30:01,081 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:30:01,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:30:01,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:30:01,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:30:01,081 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:30:01,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:30:01,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:30:01,083 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:30:01,083 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:30:01,084 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:30:01,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:30:01,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:30:01,084 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:30:01,085 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:30:01,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:30:01,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:30:01,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:30:01,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:30:01,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:30:01,086 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:30:01,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:30:01,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:30:01,086 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:30:01,087 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:30:01,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:30:01,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:30:01,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:30:01,516 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:30:01,517 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:30:01,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label13.c [2020-10-29 08:30:01,609 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/150cb30aa/70bbc0fbd9da48028c4c61fa43976c3b/FLAGd4e53e347 [2020-10-29 08:30:02,823 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:30:02,823 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label13.c [2020-10-29 08:30:02,860 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/150cb30aa/70bbc0fbd9da48028c4c61fa43976c3b/FLAGd4e53e347 [2020-10-29 08:30:03,231 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/150cb30aa/70bbc0fbd9da48028c4c61fa43976c3b [2020-10-29 08:30:03,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:30:03,245 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:30:03,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:30:03,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:30:03,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:30:03,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:30:03" (1/1) ... [2020-10-29 08:30:03,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bfc485d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:30:03, skipping insertion in model container [2020-10-29 08:30:03,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:30:03" (1/1) ... [2020-10-29 08:30:03,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:30:03,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:30:04,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:30:04,578 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:30:05,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:30:05,147 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:30:05,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:30:05 WrapperNode [2020-10-29 08:30:05,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:30:05,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:30:05,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:30:05,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:30:05,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:30:05" (1/1) ... [2020-10-29 08:30:05,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:30:05" (1/1) ... [2020-10-29 08:30:05,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:30:05" (1/1) ... [2020-10-29 08:30:05,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:30:05" (1/1) ... [2020-10-29 08:30:05,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:30:05" (1/1) ... [2020-10-29 08:30:05,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:30:05" (1/1) ... [2020-10-29 08:30:05,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:30:05" (1/1) ... [2020-10-29 08:30:05,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:30:05,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:30:05,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:30:05,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:30:05,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:30:05" (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 08:30:05,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:30:05,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:30:05,570 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:30:05,570 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:30:05,571 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:30:05,571 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 08:30:05,571 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:30:05,572 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:30:05,572 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:30:05,572 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 08:30:05,573 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:30:05,573 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:30:05,574 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:30:05,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:30:05,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:30:05,576 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:30:05,576 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:30:05,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:30:05,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:30:05,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:30:05,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:30:05,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:30:05,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:30:10,399 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:30:10,399 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:30:10,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:30:10 BoogieIcfgContainer [2020-10-29 08:30:10,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:30:10,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:30:10,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:30:10,409 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:30:10,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:30:03" (1/3) ... [2020-10-29 08:30:10,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5114ca4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:30:10, skipping insertion in model container [2020-10-29 08:30:10,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:30:05" (2/3) ... [2020-10-29 08:30:10,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5114ca4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:30:10, skipping insertion in model container [2020-10-29 08:30:10,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:30:10" (3/3) ... [2020-10-29 08:30:10,413 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label13.c [2020-10-29 08:30:10,426 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:30:10,433 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:30:10,448 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:30:10,500 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:30:10,500 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:30:10,500 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:30:10,501 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:30:10,501 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:30:10,501 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:30:10,501 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:30:10,501 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:30:10,553 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-29 08:30:10,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 08:30:10,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:30:10,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:30:10,568 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:30:10,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:30:10,578 INFO L82 PathProgramCache]: Analyzing trace with hash 420332632, now seen corresponding path program 1 times [2020-10-29 08:30:10,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:30:10,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805574460] [2020-10-29 08:30:10,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:30:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:10,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:11,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:11,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 08:30:11,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:11,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 616 [2020-10-29 08:30:11,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:11,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:11,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:30:11,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:30:11,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 08:30:11,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:30:11,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:30:11,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:11,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:11,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:11,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:30:11,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:11,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 08:30:11,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:11,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:11,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:30:11,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:11,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:30:11,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:30:11,796 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 08:30:11,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805574460] [2020-10-29 08:30:11,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:30:11,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 08:30:11,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216866560] [2020-10-29 08:30:11,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:30:11,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:30:11,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:30:11,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:30:11,833 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-29 08:30:25,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:30:25,269 INFO L93 Difference]: Finished difference Result 2989 states and 5773 transitions. [2020-10-29 08:30:25,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:30:25,274 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-10-29 08:30:25,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:30:25,313 INFO L225 Difference]: With dead ends: 2989 [2020-10-29 08:30:25,313 INFO L226 Difference]: Without dead ends: 2143 [2020-10-29 08:30:25,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:30:25,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-29 08:30:25,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-29 08:30:25,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-29 08:30:25,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3564 transitions. [2020-10-29 08:30:25,525 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3564 transitions. Word has length 52 [2020-10-29 08:30:25,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:30:25,526 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3564 transitions. [2020-10-29 08:30:25,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:30:25,527 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3564 transitions. [2020-10-29 08:30:25,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 08:30:25,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:30:25,540 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:30:25,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:30:25,541 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:30:25,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:30:25,545 INFO L82 PathProgramCache]: Analyzing trace with hash -2093294976, now seen corresponding path program 1 times [2020-10-29 08:30:25,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:30:25,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763983876] [2020-10-29 08:30:25,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:30:25,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:25,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:25,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:26,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:26,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 08:30:26,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:30:26,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1183 [2020-10-29 08:30:26,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:26,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:26,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:30:26,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:30:26,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:30:26,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:30:26,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:30:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:26,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:26,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:26,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:30:26,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:26,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 08:30:26,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:26,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:26,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:30:26,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:26,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:30:26,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:30:26,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:30:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:26,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:27,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:27,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 08:30:27,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:27,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 08:30:27,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:27,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:27,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:30:27,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:30:27,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 08:30:27,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 08:30:27,194 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:30:27,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763983876] [2020-10-29 08:30:27,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:30:27,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:30:27,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399412500] [2020-10-29 08:30:27,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:30:27,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:30:27,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:30:27,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:30:27,202 INFO L87 Difference]: Start difference. First operand 2136 states and 3564 transitions. Second operand 7 states. [2020-10-29 08:30:41,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:30:41,013 INFO L93 Difference]: Finished difference Result 6471 states and 10885 transitions. [2020-10-29 08:30:41,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:30:41,019 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-29 08:30:41,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:30:41,046 INFO L225 Difference]: With dead ends: 6471 [2020-10-29 08:30:41,046 INFO L226 Difference]: Without dead ends: 4341 [2020-10-29 08:30:41,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:30:41,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4341 states. [2020-10-29 08:30:41,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4341 to 3588. [2020-10-29 08:30:41,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3588 states. [2020-10-29 08:30:41,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3588 states to 3588 states and 5289 transitions. [2020-10-29 08:30:41,170 INFO L78 Accepts]: Start accepts. Automaton has 3588 states and 5289 transitions. Word has length 122 [2020-10-29 08:30:41,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:30:41,171 INFO L481 AbstractCegarLoop]: Abstraction has 3588 states and 5289 transitions. [2020-10-29 08:30:41,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:30:41,171 INFO L276 IsEmpty]: Start isEmpty. Operand 3588 states and 5289 transitions. [2020-10-29 08:30:41,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-29 08:30:41,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:30:41,174 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:30:41,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:30:41,174 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:30:41,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:30:41,175 INFO L82 PathProgramCache]: Analyzing trace with hash -155140886, now seen corresponding path program 1 times [2020-10-29 08:30:41,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:30:41,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837049899] [2020-10-29 08:30:41,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:30:41,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:41,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:41,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:42,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:42,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 08:30:42,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:30:42,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 791 [2020-10-29 08:30:42,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:42,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:42,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:30:42,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:30:42,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:30:42,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:42,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:30:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:42,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:42,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:42,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:30:42,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:42,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 08:30:42,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:42,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:42,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:30:42,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:42,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:30:42,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:42,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:30:42,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:42,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:42,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:42,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:30:42,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:42,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-29 08:30:42,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:42,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:42,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:30:42,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:30:42,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:30:42,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:30:42,470 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:30:42,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837049899] [2020-10-29 08:30:42,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:30:42,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:30:42,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820855670] [2020-10-29 08:30:42,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:30:42,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:30:42,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:30:42,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:30:42,476 INFO L87 Difference]: Start difference. First operand 3588 states and 5289 transitions. Second operand 7 states. [2020-10-29 08:30:54,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:30:54,643 INFO L93 Difference]: Finished difference Result 8770 states and 13053 transitions. [2020-10-29 08:30:54,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:30:54,644 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2020-10-29 08:30:54,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:30:54,685 INFO L225 Difference]: With dead ends: 8770 [2020-10-29 08:30:54,686 INFO L226 Difference]: Without dead ends: 5188 [2020-10-29 08:30:54,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:30:54,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5188 states. [2020-10-29 08:30:54,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5188 to 5088. [2020-10-29 08:30:54,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5088 states. [2020-10-29 08:30:54,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5088 states to 5088 states and 7130 transitions. [2020-10-29 08:30:54,974 INFO L78 Accepts]: Start accepts. Automaton has 5088 states and 7130 transitions. Word has length 127 [2020-10-29 08:30:54,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:30:54,975 INFO L481 AbstractCegarLoop]: Abstraction has 5088 states and 7130 transitions. [2020-10-29 08:30:54,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:30:54,975 INFO L276 IsEmpty]: Start isEmpty. Operand 5088 states and 7130 transitions. [2020-10-29 08:30:54,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-29 08:30:54,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:30:54,978 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:30:54,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:30:54,978 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:30:54,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:30:54,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1858740222, now seen corresponding path program 1 times [2020-10-29 08:30:54,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:30:54,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226418196] [2020-10-29 08:30:54,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:30:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:55,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:55,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:56,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:56,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-29 08:30:56,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:30:56,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1547 [2020-10-29 08:30:56,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:56,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:56,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:30:56,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:30:56,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 08:30:56,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:30:56,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:30:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:56,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:56,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:56,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:30:56,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:56,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 08:30:56,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:56,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:56,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:30:56,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:56,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:30:56,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:56,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:30:56,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:56,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:56,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:56,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 08:30:56,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:56,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-29 08:30:56,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:56,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:56,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:30:56,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:30:56,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 08:30:56,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:57,235 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:30:57,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226418196] [2020-10-29 08:30:57,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:30:57,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:30:57,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415606955] [2020-10-29 08:30:57,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:30:57,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:30:57,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:30:57,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:30:57,246 INFO L87 Difference]: Start difference. First operand 5088 states and 7130 transitions. Second operand 7 states. [2020-10-29 08:31:13,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:31:13,408 INFO L93 Difference]: Finished difference Result 14621 states and 20757 transitions. [2020-10-29 08:31:13,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 08:31:13,409 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 149 [2020-10-29 08:31:13,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:31:13,458 INFO L225 Difference]: With dead ends: 14621 [2020-10-29 08:31:13,458 INFO L226 Difference]: Without dead ends: 9539 [2020-10-29 08:31:13,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:31:13,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9539 states. [2020-10-29 08:31:13,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9539 to 8086. [2020-10-29 08:31:13,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8086 states. [2020-10-29 08:31:13,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8086 states to 8086 states and 10627 transitions. [2020-10-29 08:31:13,797 INFO L78 Accepts]: Start accepts. Automaton has 8086 states and 10627 transitions. Word has length 149 [2020-10-29 08:31:13,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:31:13,798 INFO L481 AbstractCegarLoop]: Abstraction has 8086 states and 10627 transitions. [2020-10-29 08:31:13,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:31:13,798 INFO L276 IsEmpty]: Start isEmpty. Operand 8086 states and 10627 transitions. [2020-10-29 08:31:13,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-29 08:31:13,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:31:13,801 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:31:13,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:31:13,802 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:31:13,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:31:13,802 INFO L82 PathProgramCache]: Analyzing trace with hash -2084265704, now seen corresponding path program 1 times [2020-10-29 08:31:13,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:31:13,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697778010] [2020-10-29 08:31:13,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:31:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:13,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:14,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:14,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:14,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 08:31:14,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:31:14,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 877 [2020-10-29 08:31:14,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:14,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:14,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:31:14,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:31:14,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 241 [2020-10-29 08:31:14,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:31:14,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:31:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:14,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:14,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:14,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:31:14,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:14,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 08:31:14,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:14,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:14,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:31:14,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:14,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:31:14,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:14,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:31:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:15,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:15,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:15,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-29 08:31:15,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:15,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-29 08:31:15,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:15,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:15,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:31:15,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:31:15,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-29 08:31:15,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:16,029 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 08:31:16,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697778010] [2020-10-29 08:31:16,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:31:16,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:31:16,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786842836] [2020-10-29 08:31:16,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 08:31:16,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:31:16,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 08:31:16,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:31:16,033 INFO L87 Difference]: Start difference. First operand 8086 states and 10627 transitions. Second operand 6 states. [2020-10-29 08:31:27,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:31:27,415 INFO L93 Difference]: Finished difference Result 18436 states and 23876 transitions. [2020-10-29 08:31:27,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 08:31:27,430 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 238 [2020-10-29 08:31:27,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:31:27,475 INFO L225 Difference]: With dead ends: 18436 [2020-10-29 08:31:27,475 INFO L226 Difference]: Without dead ends: 10356 [2020-10-29 08:31:27,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:31:27,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10356 states. [2020-10-29 08:31:27,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10356 to 10231. [2020-10-29 08:31:27,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10231 states. [2020-10-29 08:31:27,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10231 states to 10231 states and 12866 transitions. [2020-10-29 08:31:27,771 INFO L78 Accepts]: Start accepts. Automaton has 10231 states and 12866 transitions. Word has length 238 [2020-10-29 08:31:27,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:31:27,772 INFO L481 AbstractCegarLoop]: Abstraction has 10231 states and 12866 transitions. [2020-10-29 08:31:27,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 08:31:27,773 INFO L276 IsEmpty]: Start isEmpty. Operand 10231 states and 12866 transitions. [2020-10-29 08:31:27,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-29 08:31:27,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:31:27,780 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:31:27,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:31:27,780 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:31:27,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:31:27,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1807211326, now seen corresponding path program 1 times [2020-10-29 08:31:27,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:31:27,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596576759] [2020-10-29 08:31:27,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:31:27,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:27,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:28,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:28,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:29,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:29,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-29 08:31:29,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:31:29,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1477 [2020-10-29 08:31:29,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:29,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:29,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:31:29,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-29 08:31:29,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 08:31:29,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:29,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:31:29,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:29,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:29,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:29,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:31:29,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:29,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:31:29,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:29,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:29,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:31:29,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:29,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:31:29,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:29,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:31:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:29,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:29,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:29,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-29 08:31:29,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:29,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-29 08:31:29,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:29,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:29,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:31:29,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:29,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-29 08:31:29,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:29,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-29 08:31:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:29,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:29,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:29,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 08:31:29,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:29,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-29 08:31:29,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:29,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:29,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:31:29,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:31:29,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 08:31:29,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:31:30,369 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:31:30,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596576759] [2020-10-29 08:31:30,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:31:30,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:31:30,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450467434] [2020-10-29 08:31:30,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:31:30,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:31:30,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:31:30,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:31:30,373 INFO L87 Difference]: Start difference. First operand 10231 states and 12866 transitions. Second operand 7 states. [2020-10-29 08:31:47,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:31:47,683 INFO L93 Difference]: Finished difference Result 20839 states and 27718 transitions. [2020-10-29 08:31:47,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:31:47,685 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 335 [2020-10-29 08:31:47,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:31:47,722 INFO L225 Difference]: With dead ends: 20839 [2020-10-29 08:31:47,722 INFO L226 Difference]: Without dead ends: 9792 [2020-10-29 08:31:47,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:31:47,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9792 states. [2020-10-29 08:31:48,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9792 to 9585. [2020-10-29 08:31:48,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9585 states. [2020-10-29 08:31:48,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9585 states to 9585 states and 10987 transitions. [2020-10-29 08:31:48,117 INFO L78 Accepts]: Start accepts. Automaton has 9585 states and 10987 transitions. Word has length 335 [2020-10-29 08:31:48,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:31:48,118 INFO L481 AbstractCegarLoop]: Abstraction has 9585 states and 10987 transitions. [2020-10-29 08:31:48,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:31:48,118 INFO L276 IsEmpty]: Start isEmpty. Operand 9585 states and 10987 transitions. [2020-10-29 08:31:48,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2020-10-29 08:31:48,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:31:48,131 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:31:48,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:31:48,131 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:31:48,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:31:48,133 INFO L82 PathProgramCache]: Analyzing trace with hash -2061447928, now seen corresponding path program 1 times [2020-10-29 08:31:48,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:31:48,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793943167] [2020-10-29 08:31:48,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:31:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:48,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:48,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:48,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:53,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:53,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 497 [2020-10-29 08:31:53,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:31:53,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 08:31:53,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:53,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:53,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:31:53,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:31:53,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-29 08:31:53,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:31:53,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:31:53,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:53,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:53,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:53,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:31:53,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:53,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 08:31:53,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:53,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:53,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:31:53,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:53,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:31:53,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:53,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:31:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:53,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:54,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:54,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:31:54,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:54,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 588 [2020-10-29 08:31:54,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:54,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:54,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:31:54,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:31:54,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-29 08:31:54,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:54,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:31:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:54,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:54,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:54,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:31:54,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:54,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 08:31:54,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:54,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:54,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:31:54,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:31:54,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 08:31:54,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:54,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-29 08:31:54,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:54,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:54,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:54,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:31:54,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:54,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 08:31:54,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:54,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:54,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:31:54,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-29 08:31:54,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:31:54,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:31:54,979 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 88 proven. 117 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 08:31:54,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793943167] [2020-10-29 08:31:54,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:31:54,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:31:54,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405524521] [2020-10-29 08:31:54,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:31:54,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:31:54,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:31:54,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:31:54,982 INFO L87 Difference]: Start difference. First operand 9585 states and 10987 transitions. Second operand 8 states. [2020-10-29 08:32:07,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:32:07,630 INFO L93 Difference]: Finished difference Result 25196 states and 29696 transitions. [2020-10-29 08:32:07,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 08:32:07,636 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 481 [2020-10-29 08:32:07,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:32:07,696 INFO L225 Difference]: With dead ends: 25196 [2020-10-29 08:32:07,696 INFO L226 Difference]: Without dead ends: 16319 [2020-10-29 08:32:07,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 08:32:07,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16319 states. [2020-10-29 08:32:08,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16319 to 15483. [2020-10-29 08:32:08,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15483 states. [2020-10-29 08:32:08,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15483 states to 15483 states and 17688 transitions. [2020-10-29 08:32:08,086 INFO L78 Accepts]: Start accepts. Automaton has 15483 states and 17688 transitions. Word has length 481 [2020-10-29 08:32:08,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:32:08,087 INFO L481 AbstractCegarLoop]: Abstraction has 15483 states and 17688 transitions. [2020-10-29 08:32:08,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:32:08,087 INFO L276 IsEmpty]: Start isEmpty. Operand 15483 states and 17688 transitions. [2020-10-29 08:32:08,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1009 [2020-10-29 08:32:08,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:32:08,125 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:32:08,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:32:08,126 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:32:08,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:32:08,127 INFO L82 PathProgramCache]: Analyzing trace with hash 285088650, now seen corresponding path program 1 times [2020-10-29 08:32:08,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:32:08,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680132085] [2020-10-29 08:32:08,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:32:08,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:08,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:08,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:13,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:13,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1030 [2020-10-29 08:32:13,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:32:13,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5131 [2020-10-29 08:32:13,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:13,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:13,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:13,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-29 08:32:13,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-29 08:32:13,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:14,001 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 08:32:14,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:32:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:14,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:14,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:14,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:32:14,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:14,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:32:14,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:14,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:14,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:14,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:14,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:14,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:32:14,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:32:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:14,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:14,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:14,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:32:14,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:14,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-29 08:32:14,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:14,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:14,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:14,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:14,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:14,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:32:14,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:32:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:14,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:14,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:14,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:32:14,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:14,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 08:32:14,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:14,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:14,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:14,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:14,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:14,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:32:14,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:32:14,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:14,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:14,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:14,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:32:14,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:14,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 08:32:14,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:14,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:14,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:14,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:14,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:14,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:32:14,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:32:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:15,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:15,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:15,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:32:15,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:15,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-10-29 08:32:15,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:15,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:15,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:32:15,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:15,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-29 08:32:15,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:32:15,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:32:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:15,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:15,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:15,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:32:15,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:15,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 08:32:15,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:15,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:15,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:32:15,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:15,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 08:32:15,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:15,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-29 08:32:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:15,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:15,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:15,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:32:15,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:15,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-29 08:32:15,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:15,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:15,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:15,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:32:15,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-29 08:32:15,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:32:16,640 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 378 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-29 08:32:16,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680132085] [2020-10-29 08:32:16,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:32:16,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:32:16,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892532533] [2020-10-29 08:32:16,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:32:16,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:32:16,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:32:16,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:32:16,643 INFO L87 Difference]: Start difference. First operand 15483 states and 17688 transitions. Second operand 7 states. [2020-10-29 08:32:31,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:32:31,660 INFO L93 Difference]: Finished difference Result 37659 states and 44726 transitions. [2020-10-29 08:32:31,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:32:31,661 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1008 [2020-10-29 08:32:31,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:32:31,739 INFO L225 Difference]: With dead ends: 37659 [2020-10-29 08:32:31,739 INFO L226 Difference]: Without dead ends: 23594 [2020-10-29 08:32:31,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 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 08:32:31,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23594 states. [2020-10-29 08:32:32,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23594 to 22799. [2020-10-29 08:32:32,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22799 states. [2020-10-29 08:32:32,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22799 states to 22799 states and 25930 transitions. [2020-10-29 08:32:32,433 INFO L78 Accepts]: Start accepts. Automaton has 22799 states and 25930 transitions. Word has length 1008 [2020-10-29 08:32:32,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:32:32,436 INFO L481 AbstractCegarLoop]: Abstraction has 22799 states and 25930 transitions. [2020-10-29 08:32:32,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:32:32,437 INFO L276 IsEmpty]: Start isEmpty. Operand 22799 states and 25930 transitions. [2020-10-29 08:32:32,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1085 [2020-10-29 08:32:32,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:32:32,493 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:32:32,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:32:32,493 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:32:32,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:32:32,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1129250790, now seen corresponding path program 1 times [2020-10-29 08:32:32,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:32:32,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400044061] [2020-10-29 08:32:32,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:32:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:32,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:33,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:34,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:37,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:37,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1108 [2020-10-29 08:32:37,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:32:37,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-29 08:32:37,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:37,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:37,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:37,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 930 [2020-10-29 08:32:37,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 08:32:37,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:38,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:32:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:38,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:38,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:38,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:32:38,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:38,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:32:38,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:38,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:38,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:38,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:38,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:38,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:38,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:32:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:38,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:38,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:38,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:32:38,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:38,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-29 08:32:38,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:38,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:38,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:38,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:38,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:38,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:38,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:32:38,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:38,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:38,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:38,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:32:38,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:38,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-29 08:32:38,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:38,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:38,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:38,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:38,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:38,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:38,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:32:38,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:38,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:38,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:38,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:32:38,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:38,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:32:38,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:38,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:38,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:38,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:38,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:38,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:38,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:32:38,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:38,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:38,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:38,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:32:38,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:38,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 08:32:38,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:38,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:38,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:38,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:38,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:38,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:38,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:32:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:38,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:38,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:38,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:32:38,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:38,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 08:32:38,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:38,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:38,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:38,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:38,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:38,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:38,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-29 08:32:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:39,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:39,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:39,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 08:32:39,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:39,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 08:32:39,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:39,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:39,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:32:39,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:39,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 08:32:39,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:39,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-29 08:32:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:39,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:39,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:39,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:32:39,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:39,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-29 08:32:39,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:39,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:39,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:39,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:32:39,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-29 08:32:39,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:39,998 INFO L134 CoverageAnalysis]: Checked inductivity of 955 backedges. 497 proven. 2 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2020-10-29 08:32:39,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400044061] [2020-10-29 08:32:39,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:32:39,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:32:39,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281918260] [2020-10-29 08:32:40,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:32:40,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:32:40,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:32:40,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:32:40,001 INFO L87 Difference]: Start difference. First operand 22799 states and 25930 transitions. Second operand 7 states. [2020-10-29 08:32:54,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:32:54,059 INFO L93 Difference]: Finished difference Result 51314 states and 59836 transitions. [2020-10-29 08:32:54,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:32:54,061 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1084 [2020-10-29 08:32:54,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:32:54,141 INFO L225 Difference]: With dead ends: 51314 [2020-10-29 08:32:54,142 INFO L226 Difference]: Without dead ends: 29933 [2020-10-29 08:32:54,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:32:54,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29933 states. [2020-10-29 08:32:54,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29933 to 29894. [2020-10-29 08:32:54,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29894 states. [2020-10-29 08:32:54,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29894 states to 29894 states and 33659 transitions. [2020-10-29 08:32:54,875 INFO L78 Accepts]: Start accepts. Automaton has 29894 states and 33659 transitions. Word has length 1084 [2020-10-29 08:32:54,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:32:54,878 INFO L481 AbstractCegarLoop]: Abstraction has 29894 states and 33659 transitions. [2020-10-29 08:32:54,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:32:54,878 INFO L276 IsEmpty]: Start isEmpty. Operand 29894 states and 33659 transitions. [2020-10-29 08:32:54,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1151 [2020-10-29 08:32:54,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:32:54,897 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:32:54,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 08:32:54,898 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:32:54,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:32:54,899 INFO L82 PathProgramCache]: Analyzing trace with hash -906459486, now seen corresponding path program 1 times [2020-10-29 08:32:54,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:32:54,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072614684] [2020-10-29 08:32:54,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:32:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:55,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:55,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:56,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:00,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:00,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1174 [2020-10-29 08:33:00,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:33:00,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-29 08:33:00,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:00,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:00,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:33:00,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-29 08:33:00,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-29 08:33:00,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:00,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:33:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:00,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:00,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:00,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:33:00,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:00,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:33:00,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:00,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:00,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:00,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:00,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:00,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:00,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:33:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:00,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:00,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:00,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:33:00,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:00,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-29 08:33:00,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:00,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:00,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:00,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:00,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:00,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:00,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:33:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:00,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:00,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:00,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:33:00,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:00,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 08:33:00,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:00,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:00,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:00,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:00,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:00,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:00,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:33:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:00,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:00,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:00,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:33:00,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:00,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:33:00,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:00,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:00,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:00,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:00,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:00,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:01,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:33:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:01,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:01,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:01,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:33:01,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:01,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-29 08:33:01,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:01,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:01,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:33:01,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:01,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-29 08:33:01,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:01,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:33:01,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:01,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:01,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:01,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:33:01,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:01,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-29 08:33:01,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:01,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:01,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:33:01,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:01,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 08:33:01,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:01,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-29 08:33:01,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:01,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:01,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:01,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 08:33:01,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:01,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-29 08:33:01,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:01,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:01,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:33:01,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:33:01,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-29 08:33:01,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:01,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 984 [2020-10-29 08:33:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:01,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:01,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:01,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:33:01,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:01,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 08:33:01,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:01,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:01,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:01,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-29 08:33:01,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:01,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:02,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 470 proven. 121 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2020-10-29 08:33:02,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072614684] [2020-10-29 08:33:02,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:33:02,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:33:02,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706586085] [2020-10-29 08:33:02,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:33:02,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:33:02,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:33:02,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:33:02,669 INFO L87 Difference]: Start difference. First operand 29894 states and 33659 transitions. Second operand 8 states. [2020-10-29 08:33:16,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:33:16,552 INFO L93 Difference]: Finished difference Result 69890 states and 80431 transitions. [2020-10-29 08:33:16,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:33:16,554 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1150 [2020-10-29 08:33:16,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:33:16,674 INFO L225 Difference]: With dead ends: 69890 [2020-10-29 08:33:16,674 INFO L226 Difference]: Without dead ends: 41414 [2020-10-29 08:33:16,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:33:16,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41414 states. [2020-10-29 08:33:17,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41414 to 40677. [2020-10-29 08:33:17,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40677 states. [2020-10-29 08:33:17,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40677 states to 40677 states and 46770 transitions. [2020-10-29 08:33:17,671 INFO L78 Accepts]: Start accepts. Automaton has 40677 states and 46770 transitions. Word has length 1150 [2020-10-29 08:33:17,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:33:17,673 INFO L481 AbstractCegarLoop]: Abstraction has 40677 states and 46770 transitions. [2020-10-29 08:33:17,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:33:17,673 INFO L276 IsEmpty]: Start isEmpty. Operand 40677 states and 46770 transitions. [2020-10-29 08:33:17,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1226 [2020-10-29 08:33:17,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:33:17,700 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:33:17,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 08:33:17,701 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:33:17,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:33:17,702 INFO L82 PathProgramCache]: Analyzing trace with hash 89480720, now seen corresponding path program 1 times [2020-10-29 08:33:17,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:33:17,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232895931] [2020-10-29 08:33:17,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:33:17,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:18,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:18,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:20,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:23,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:23,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1251 [2020-10-29 08:33:23,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:33:23,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-29 08:33:23,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:23,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:23,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:33:23,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-29 08:33:23,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 08:33:23,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:23,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:33:23,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:23,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:23,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:23,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:33:23,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:23,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:33:23,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:23,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:23,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:23,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:23,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:23,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:23,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:33:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:23,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:23,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:23,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:33:23,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:23,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-29 08:33:23,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:23,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:23,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:23,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:23,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:23,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:23,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:33:23,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:23,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:23,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:23,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:33:23,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:23,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 08:33:23,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:23,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:23,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:23,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:23,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:23,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:23,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:33:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:23,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:23,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:23,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:33:23,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:23,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:33:23,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:23,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:23,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:23,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:23,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:23,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:23,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:33:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:23,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:23,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:23,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:33:23,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:23,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 08:33:23,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:23,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:23,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:23,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:23,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:23,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:24,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:33:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:24,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:24,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:24,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:33:24,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:24,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:33:24,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:24,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:24,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:24,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:24,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:24,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:24,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-29 08:33:24,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:24,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:24,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:24,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 08:33:24,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:24,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 08:33:24,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:24,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:24,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:33:24,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:24,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-29 08:33:24,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:24,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-29 08:33:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:24,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:24,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:24,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:33:24,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:24,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 08:33:24,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:24,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:24,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:33:24,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:33:24,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-29 08:33:24,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:24,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1107 [2020-10-29 08:33:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:24,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:24,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:24,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 08:33:24,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:24,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 08:33:24,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:24,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:24,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:24,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-29 08:33:24,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:24,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:25,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1475 backedges. 599 proven. 73 refuted. 0 times theorem prover too weak. 803 trivial. 0 not checked. [2020-10-29 08:33:25,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232895931] [2020-10-29 08:33:25,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:33:25,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:33:25,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697251906] [2020-10-29 08:33:25,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:33:25,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:33:25,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:33:25,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:33:25,333 INFO L87 Difference]: Start difference. First operand 40677 states and 46770 transitions. Second operand 7 states. [2020-10-29 08:33:43,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:33:43,449 INFO L93 Difference]: Finished difference Result 89879 states and 105003 transitions. [2020-10-29 08:33:43,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 08:33:43,451 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1225 [2020-10-29 08:33:43,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:33:43,645 INFO L225 Difference]: With dead ends: 89879 [2020-10-29 08:33:43,645 INFO L226 Difference]: Without dead ends: 50620