/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:43:45,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:43:45,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:43:45,067 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:43:45,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:43:45,076 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:43:45,078 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:43:45,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:43:45,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:43:45,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:43:45,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:43:45,098 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:43:45,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:43:45,102 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:43:45,104 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:43:45,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:43:45,107 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:43:45,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:43:45,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:43:45,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:43:45,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:43:45,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:43:45,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:43:45,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:43:45,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:43:45,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:43:45,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:43:45,148 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:43:45,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:43:45,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:43:45,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:43:45,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:43:45,154 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:43:45,155 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:43:45,156 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:43:45,167 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:43:45,168 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:43:45,169 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:43:45,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:43:45,170 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:43:45,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:43:45,172 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 07:43:45,198 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:43:45,198 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:43:45,199 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:43:45,200 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:43:45,200 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:43:45,200 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:43:45,200 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:43:45,201 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:43:45,201 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:43:45,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:43:45,201 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:43:45,202 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:43:45,202 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:43:45,202 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:43:45,202 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:43:45,202 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:43:45,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:43:45,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:43:45,203 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:43:45,203 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:43:45,203 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:43:45,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:43:45,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:43:45,204 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:43:45,204 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:43:45,205 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:43:45,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:43:45,205 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:43:45,205 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:43:45,205 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:43:45,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:43:45,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:43:45,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:43:45,654 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:43:45,654 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:43:45,656 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label18.c [2020-10-29 07:43:45,744 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72d94a0b9/9f23ff2685fc490292b5a74306233726/FLAG8a71602b8 [2020-10-29 07:43:46,789 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:43:46,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label18.c [2020-10-29 07:43:46,816 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72d94a0b9/9f23ff2685fc490292b5a74306233726/FLAG8a71602b8 [2020-10-29 07:43:47,312 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72d94a0b9/9f23ff2685fc490292b5a74306233726 [2020-10-29 07:43:47,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:43:47,321 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:43:47,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:43:47,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:43:47,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:43:47,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:43:47" (1/1) ... [2020-10-29 07:43:47,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39c206df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:47, skipping insertion in model container [2020-10-29 07:43:47,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:43:47" (1/1) ... [2020-10-29 07:43:47,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:43:47,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:43:48,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:43:48,445 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:43:48,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:43:48,855 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:43:48,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:48 WrapperNode [2020-10-29 07:43:48,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:43:48,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:43:48,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:43:48,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:43:48,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:48" (1/1) ... [2020-10-29 07:43:48,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:48" (1/1) ... [2020-10-29 07:43:48,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:48" (1/1) ... [2020-10-29 07:43:48,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:48" (1/1) ... [2020-10-29 07:43:49,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:48" (1/1) ... [2020-10-29 07:43:49,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:48" (1/1) ... [2020-10-29 07:43:49,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:48" (1/1) ... [2020-10-29 07:43:49,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:43:49,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:43:49,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:43:49,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:43:49,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:43:49,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:43:49,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:43:49,241 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:43:49,241 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:43:49,241 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:43:49,242 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:43:49,242 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:43:49,242 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:43:49,242 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:43:49,242 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:43:49,243 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:43:49,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:43:49,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:43:49,243 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:43:49,243 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:43:49,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:43:49,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:43:49,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:43:49,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:43:49,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:43:49,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:43:53,404 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:43:53,404 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:43:53,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:43:53 BoogieIcfgContainer [2020-10-29 07:43:53,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:43:53,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:43:53,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:43:53,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:43:53,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:43:47" (1/3) ... [2020-10-29 07:43:53,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2a2a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:43:53, skipping insertion in model container [2020-10-29 07:43:53,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:48" (2/3) ... [2020-10-29 07:43:53,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2a2a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:43:53, skipping insertion in model container [2020-10-29 07:43:53,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:43:53" (3/3) ... [2020-10-29 07:43:53,425 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label18.c [2020-10-29 07:43:53,439 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:43:53,446 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:43:53,464 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:43:53,519 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:43:53,520 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:43:53,520 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:43:53,520 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:43:53,520 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:43:53,520 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:43:53,520 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:43:53,521 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:43:53,549 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-29 07:43:53,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 07:43:53,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:43:53,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:43:53,557 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:43:53,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:43:53,564 INFO L82 PathProgramCache]: Analyzing trace with hash -540594521, now seen corresponding path program 1 times [2020-10-29 07:43:53,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:43:53,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905516408] [2020-10-29 07:43:53,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:43:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:53,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:54,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:54,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 07:43:54,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:54,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450 [2020-10-29 07:43:54,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:54,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:54,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:43:54,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:43:54,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 07:43:54,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:43:54,422 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 07:43:54,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:43:54,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:54,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:54,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:54,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:43:54,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:54,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 07:43:54,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:54,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:54,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:43:54,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:54,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:43:54,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:43:54,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:43:54,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905516408] [2020-10-29 07:43:54,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:43:54,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:43:54,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552841747] [2020-10-29 07:43:54,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:43:54,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:43:54,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:43:54,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:43:54,573 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-29 07:43:54,759 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-29 07:44:01,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:44:01,189 INFO L93 Difference]: Finished difference Result 1245 states and 2226 transitions. [2020-10-29 07:44:01,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:44:01,192 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-29 07:44:01,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:44:01,214 INFO L225 Difference]: With dead ends: 1245 [2020-10-29 07:44:01,214 INFO L226 Difference]: Without dead ends: 725 [2020-10-29 07:44:01,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:44:01,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2020-10-29 07:44:01,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 713. [2020-10-29 07:44:01,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-10-29 07:44:01,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1130 transitions. [2020-10-29 07:44:01,353 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1130 transitions. Word has length 15 [2020-10-29 07:44:01,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:44:01,354 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1130 transitions. [2020-10-29 07:44:01,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:44:01,354 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1130 transitions. [2020-10-29 07:44:01,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 07:44:01,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:44:01,359 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:44:01,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:44:01,360 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:44:01,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:44:01,361 INFO L82 PathProgramCache]: Analyzing trace with hash -839517005, now seen corresponding path program 1 times [2020-10-29 07:44:01,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:44:01,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075506392] [2020-10-29 07:44:01,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:44:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:01,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:02,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:03,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:03,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:03,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 07:44:03,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:44:03,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1863 [2020-10-29 07:44:03,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:03,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:03,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:44:03,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:44:03,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 07:44:03,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:44:03,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:44:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:03,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:03,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:03,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:44:03,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:03,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:44:03,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:03,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:03,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:03,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:03,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:44:03,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-29 07:44:03,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:44:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:03,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:03,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:03,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 07:44:03,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:03,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-29 07:44:03,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:03,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:03,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:03,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:44:03,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 07:44:03,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:03,917 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:44:03,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075506392] [2020-10-29 07:44:03,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:44:03,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:44:03,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224011964] [2020-10-29 07:44:03,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:44:03,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:44:03,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:44:03,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:44:03,927 INFO L87 Difference]: Start difference. First operand 713 states and 1130 transitions. Second operand 7 states. [2020-10-29 07:44:13,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:44:13,012 INFO L93 Difference]: Finished difference Result 2110 states and 3379 transitions. [2020-10-29 07:44:13,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:44:13,012 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 87 [2020-10-29 07:44:13,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:44:13,024 INFO L225 Difference]: With dead ends: 2110 [2020-10-29 07:44:13,024 INFO L226 Difference]: Without dead ends: 1403 [2020-10-29 07:44:13,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:44:13,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2020-10-29 07:44:13,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1356. [2020-10-29 07:44:13,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1356 states. [2020-10-29 07:44:13,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 1875 transitions. [2020-10-29 07:44:13,111 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 1875 transitions. Word has length 87 [2020-10-29 07:44:13,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:44:13,112 INFO L481 AbstractCegarLoop]: Abstraction has 1356 states and 1875 transitions. [2020-10-29 07:44:13,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:44:13,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 1875 transitions. [2020-10-29 07:44:13,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 07:44:13,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:44:13,116 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:44:13,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:44:13,116 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:44:13,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:44:13,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1154722627, now seen corresponding path program 1 times [2020-10-29 07:44:13,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:44:13,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107189228] [2020-10-29 07:44:13,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:44:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:13,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:13,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:14,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:14,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 07:44:14,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:44:14,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1260 [2020-10-29 07:44:14,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:14,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:14,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:44:14,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:44:14,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:44:14,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:44:14,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:44:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:14,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:14,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:14,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:44:14,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:14,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 07:44:14,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:14,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:14,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:14,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:14,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:44:14,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:44:14,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:44:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:14,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:14,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:14,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:44:14,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:14,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-29 07:44:14,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:14,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:14,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:14,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:44:14,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 07:44:14,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:15,076 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:44:15,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107189228] [2020-10-29 07:44:15,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:44:15,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 07:44:15,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834643715] [2020-10-29 07:44:15,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:44:15,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:44:15,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:44:15,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:44:15,080 INFO L87 Difference]: Start difference. First operand 1356 states and 1875 transitions. Second operand 8 states. [2020-10-29 07:44:25,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:44:25,045 INFO L93 Difference]: Finished difference Result 3126 states and 4417 transitions. [2020-10-29 07:44:25,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:44:25,047 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2020-10-29 07:44:25,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:44:25,064 INFO L225 Difference]: With dead ends: 3126 [2020-10-29 07:44:25,064 INFO L226 Difference]: Without dead ends: 1776 [2020-10-29 07:44:25,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:44:25,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1776 states. [2020-10-29 07:44:25,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1776 to 1667. [2020-10-29 07:44:25,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1667 states. [2020-10-29 07:44:25,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2197 transitions. [2020-10-29 07:44:25,158 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2197 transitions. Word has length 95 [2020-10-29 07:44:25,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:44:25,158 INFO L481 AbstractCegarLoop]: Abstraction has 1667 states and 2197 transitions. [2020-10-29 07:44:25,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:44:25,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2197 transitions. [2020-10-29 07:44:25,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-29 07:44:25,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:44:25,163 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:44:25,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:44:25,163 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:44:25,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:44:25,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1723249681, now seen corresponding path program 1 times [2020-10-29 07:44:25,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:44:25,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983186575] [2020-10-29 07:44:25,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:44:25,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:25,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:25,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:25,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:26,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:29,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:29,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-29 07:44:29,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:44:29,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4077 [2020-10-29 07:44:29,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:29,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:29,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:44:29,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:44:29,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-29 07:44:29,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:29,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:44:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:29,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:29,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:29,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:44:29,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:29,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 07:44:29,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:29,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:29,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:29,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:29,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:44:29,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:44:29,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:44:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:29,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:29,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:29,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:29,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:44:29,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:44:29,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-29 07:44:29,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:29,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:29,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:29,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:29,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:44:29,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:29,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:44:29,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:29,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:30,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:30,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:44:30,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:30,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-29 07:44:30,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:30,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:30,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:30,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:44:30,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 07:44:30,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:30,223 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:44:30,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983186575] [2020-10-29 07:44:30,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:44:30,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:44:30,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035307206] [2020-10-29 07:44:30,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:44:30,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:44:30,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:44:30,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:44:30,230 INFO L87 Difference]: Start difference. First operand 1667 states and 2197 transitions. Second operand 7 states. [2020-10-29 07:44:40,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:44:40,815 INFO L93 Difference]: Finished difference Result 4348 states and 5967 transitions. [2020-10-29 07:44:40,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:44:40,819 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2020-10-29 07:44:40,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:44:40,837 INFO L225 Difference]: With dead ends: 4348 [2020-10-29 07:44:40,837 INFO L226 Difference]: Without dead ends: 2994 [2020-10-29 07:44:40,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:44:40,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2020-10-29 07:44:40,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 2635. [2020-10-29 07:44:40,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2635 states. [2020-10-29 07:44:40,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2635 states to 2635 states and 3304 transitions. [2020-10-29 07:44:40,942 INFO L78 Accepts]: Start accepts. Automaton has 2635 states and 3304 transitions. Word has length 190 [2020-10-29 07:44:40,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:44:40,944 INFO L481 AbstractCegarLoop]: Abstraction has 2635 states and 3304 transitions. [2020-10-29 07:44:40,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:44:40,944 INFO L276 IsEmpty]: Start isEmpty. Operand 2635 states and 3304 transitions. [2020-10-29 07:44:40,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-29 07:44:40,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:44:40,959 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:44:40,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:44:40,959 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:44:40,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:44:40,960 INFO L82 PathProgramCache]: Analyzing trace with hash 116570419, now seen corresponding path program 1 times [2020-10-29 07:44:40,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:44:40,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543783472] [2020-10-29 07:44:40,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:44:41,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:41,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:41,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:43,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:43,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-29 07:44:43,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:44:43,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1976 [2020-10-29 07:44:43,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:43,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:43,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:44:43,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:44:43,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 304 [2020-10-29 07:44:43,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:43,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:44:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:43,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:43,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:43,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:44:43,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:43,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:44:43,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:43,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:43,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:43,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:43,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:44:43,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:43,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:44:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:43,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:43,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:43,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:44:43,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:43,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 564 [2020-10-29 07:44:43,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:43,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:43,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:43,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:44:43,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 287 [2020-10-29 07:44:43,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 07:44:44,284 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:44:44,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543783472] [2020-10-29 07:44:44,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:44:44,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:44:44,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011949769] [2020-10-29 07:44:44,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:44:44,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:44:44,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:44:44,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:44:44,287 INFO L87 Difference]: Start difference. First operand 2635 states and 3304 transitions. Second operand 6 states. [2020-10-29 07:44:54,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:44:54,641 INFO L93 Difference]: Finished difference Result 3315 states and 4113 transitions. [2020-10-29 07:44:54,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:44:54,654 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 301 [2020-10-29 07:44:54,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:44:54,670 INFO L225 Difference]: With dead ends: 3315 [2020-10-29 07:44:54,670 INFO L226 Difference]: Without dead ends: 3312 [2020-10-29 07:44:54,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:44:54,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3312 states. [2020-10-29 07:44:54,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3312 to 3268. [2020-10-29 07:44:54,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3268 states. [2020-10-29 07:44:54,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3268 states to 3268 states and 4046 transitions. [2020-10-29 07:44:54,788 INFO L78 Accepts]: Start accepts. Automaton has 3268 states and 4046 transitions. Word has length 301 [2020-10-29 07:44:54,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:44:54,789 INFO L481 AbstractCegarLoop]: Abstraction has 3268 states and 4046 transitions. [2020-10-29 07:44:54,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:44:54,790 INFO L276 IsEmpty]: Start isEmpty. Operand 3268 states and 4046 transitions. [2020-10-29 07:44:54,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-29 07:44:54,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:44:54,796 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:44:54,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:44:54,797 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:44:54,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:44:54,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1986928798, now seen corresponding path program 1 times [2020-10-29 07:44:54,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:44:54,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188730073] [2020-10-29 07:44:54,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:44:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:54,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:55,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:55,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:56,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:59,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:59,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-29 07:44:59,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:44:59,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4649 [2020-10-29 07:44:59,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:59,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:59,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 07:44:59,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:44:59,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 315 [2020-10-29 07:44:59,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:59,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:44:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:59,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:59,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:59,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:44:59,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:59,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:44:59,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:59,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:59,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:59,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:59,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:44:59,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:59,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:44:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:59,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:59,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:00,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:00,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:45:00,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:45:00,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-29 07:45:00,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:00,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:00,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:45:00,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:00,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:45:00,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:45:00,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:45:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:00,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:00,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:00,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:00,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:45:00,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:45:00,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 703 [2020-10-29 07:45:00,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:00,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:00,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:45:00,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:00,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-29 07:45:00,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:01,044 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-29 07:45:01,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188730073] [2020-10-29 07:45:01,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:45:01,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:45:01,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709006844] [2020-10-29 07:45:01,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:45:01,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:45:01,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:45:01,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:45:01,048 INFO L87 Difference]: Start difference. First operand 3268 states and 4046 transitions. Second operand 7 states. [2020-10-29 07:45:01,213 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 07:45:18,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:45:18,651 INFO L93 Difference]: Finished difference Result 9347 states and 12157 transitions. [2020-10-29 07:45:18,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:45:18,653 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 310 [2020-10-29 07:45:18,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:45:18,687 INFO L225 Difference]: With dead ends: 9347 [2020-10-29 07:45:18,687 INFO L226 Difference]: Without dead ends: 7016 [2020-10-29 07:45:18,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-29 07:45:18,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7016 states. [2020-10-29 07:45:18,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7016 to 4838. [2020-10-29 07:45:18,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4838 states. [2020-10-29 07:45:18,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4838 states to 4838 states and 6170 transitions. [2020-10-29 07:45:18,870 INFO L78 Accepts]: Start accepts. Automaton has 4838 states and 6170 transitions. Word has length 310 [2020-10-29 07:45:18,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:45:18,871 INFO L481 AbstractCegarLoop]: Abstraction has 4838 states and 6170 transitions. [2020-10-29 07:45:18,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:45:18,871 INFO L276 IsEmpty]: Start isEmpty. Operand 4838 states and 6170 transitions. [2020-10-29 07:45:18,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-29 07:45:18,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:45:18,881 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:45:18,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:45:18,882 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:45:18,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:45:18,882 INFO L82 PathProgramCache]: Analyzing trace with hash 289984850, now seen corresponding path program 1 times [2020-10-29 07:45:18,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:45:18,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696324831] [2020-10-29 07:45:18,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:45:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:19,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:19,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:20,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:21,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:21,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 425 [2020-10-29 07:45:21,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:45:21,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2590 [2020-10-29 07:45:21,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:21,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:21,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 07:45:21,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:45:21,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 416 [2020-10-29 07:45:21,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:21,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:45:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:21,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:21,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:21,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:45:21,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:21,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 07:45:21,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:21,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:21,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:45:21,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:21,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:45:21,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:21,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:45:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:21,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:22,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:22,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:45:22,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:22,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 634 [2020-10-29 07:45:22,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:22,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:22,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:45:22,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:45:22,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 287 [2020-10-29 07:45:22,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:45:22,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:45:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:22,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:23,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:23,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:45:23,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:23,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-29 07:45:23,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:23,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:23,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:45:23,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:45:23,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 07:45:23,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:23,384 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-29 07:45:23,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696324831] [2020-10-29 07:45:23,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:45:23,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:45:23,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123600639] [2020-10-29 07:45:23,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:45:23,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:45:23,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:45:23,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:45:23,391 INFO L87 Difference]: Start difference. First operand 4838 states and 6170 transitions. Second operand 8 states. [2020-10-29 07:45:36,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:45:36,433 INFO L93 Difference]: Finished difference Result 11699 states and 15541 transitions. [2020-10-29 07:45:36,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:45:36,435 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 411 [2020-10-29 07:45:36,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:45:36,471 INFO L225 Difference]: With dead ends: 11699 [2020-10-29 07:45:36,472 INFO L226 Difference]: Without dead ends: 7798 [2020-10-29 07:45:36,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-10-29 07:45:36,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7798 states. [2020-10-29 07:45:36,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7798 to 7133. [2020-10-29 07:45:36,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7133 states. [2020-10-29 07:45:36,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7133 states to 7133 states and 9072 transitions. [2020-10-29 07:45:36,713 INFO L78 Accepts]: Start accepts. Automaton has 7133 states and 9072 transitions. Word has length 411 [2020-10-29 07:45:36,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:45:36,714 INFO L481 AbstractCegarLoop]: Abstraction has 7133 states and 9072 transitions. [2020-10-29 07:45:36,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:45:36,714 INFO L276 IsEmpty]: Start isEmpty. Operand 7133 states and 9072 transitions. [2020-10-29 07:45:36,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2020-10-29 07:45:36,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:45:36,726 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-29 07:45:36,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:45:36,727 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:45:36,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:45:36,727 INFO L82 PathProgramCache]: Analyzing trace with hash 365664791, now seen corresponding path program 1 times [2020-10-29 07:45:36,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:45:36,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089196880] [2020-10-29 07:45:36,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:45:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:36,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:37,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:40,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:40,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 467 [2020-10-29 07:45:40,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:45:40,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3467 [2020-10-29 07:45:40,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:40,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:40,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:45:40,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 366 [2020-10-29 07:45:40,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 07:45:40,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:40,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:45:40,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:40,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:40,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:40,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:45:40,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:40,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:45:40,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:40,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:40,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:45:40,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:40,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:45:40,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:40,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:45:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:40,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:40,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:40,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:45:40,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:40,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 07:45:40,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:40,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:40,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:45:40,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:40,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:45:40,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:40,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:45:40,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:40,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:40,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:40,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:45:40,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:40,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 07:45:40,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:40,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:40,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:45:40,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:40,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:45:40,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:40,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-29 07:45:40,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:40,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:41,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:41,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 07:45:41,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:41,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-29 07:45:41,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:41,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:41,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:45:41,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:45:41,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 07:45:41,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:41,567 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-29 07:45:41,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089196880] [2020-10-29 07:45:41,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:45:41,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:45:41,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146356574] [2020-10-29 07:45:41,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:45:41,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:45:41,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:45:41,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:45:41,571 INFO L87 Difference]: Start difference. First operand 7133 states and 9072 transitions. Second operand 8 states. [2020-10-29 07:45:57,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:45:57,751 INFO L93 Difference]: Finished difference Result 21557 states and 29301 transitions. [2020-10-29 07:45:57,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:45:57,753 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 451 [2020-10-29 07:45:57,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:45:57,819 INFO L225 Difference]: With dead ends: 21557 [2020-10-29 07:45:57,820 INFO L226 Difference]: Without dead ends: 14737 [2020-10-29 07:45:57,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 07:45:57,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14737 states. [2020-10-29 07:45:58,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14737 to 14068. [2020-10-29 07:45:58,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14068 states. [2020-10-29 07:45:58,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14068 states to 14068 states and 18431 transitions. [2020-10-29 07:45:58,247 INFO L78 Accepts]: Start accepts. Automaton has 14068 states and 18431 transitions. Word has length 451 [2020-10-29 07:45:58,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:45:58,249 INFO L481 AbstractCegarLoop]: Abstraction has 14068 states and 18431 transitions. [2020-10-29 07:45:58,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:45:58,249 INFO L276 IsEmpty]: Start isEmpty. Operand 14068 states and 18431 transitions. [2020-10-29 07:45:58,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2020-10-29 07:45:58,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:45:58,264 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-29 07:45:58,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:45:58,264 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:45:58,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:45:58,266 INFO L82 PathProgramCache]: Analyzing trace with hash 2117923130, now seen corresponding path program 1 times [2020-10-29 07:45:58,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:45:58,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330164991] [2020-10-29 07:45:58,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:45:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:58,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:59,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:00,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:00,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 474 [2020-10-29 07:46:00,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:46:00,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1981 [2020-10-29 07:46:00,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:00,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:00,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:00,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:46:00,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 07:46:00,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:00,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:46:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:00,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:00,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:00,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:46:00,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:00,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:46:00,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:00,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:00,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:46:00,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:00,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:46:00,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:00,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:46:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:00,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:00,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:00,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:46:00,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:00,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-29 07:46:00,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:00,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:00,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:46:00,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:00,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:46:00,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:00,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:46:00,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:00,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:01,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:01,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 07:46:01,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:01,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-29 07:46:01,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:01,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:01,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:01,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:46:01,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 07:46:01,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:01,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2020-10-29 07:46:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:01,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:01,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:01,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:46:01,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:01,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 07:46:01,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:01,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:01,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:46:01,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-29 07:46:01,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:46:01,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:01,432 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 106 proven. 82 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-29 07:46:01,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330164991] [2020-10-29 07:46:01,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:46:01,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:46:01,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549264649] [2020-10-29 07:46:01,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:46:01,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:46:01,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:46:01,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:46:01,438 INFO L87 Difference]: Start difference. First operand 14068 states and 18431 transitions. Second operand 7 states. [2020-10-29 07:46:15,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:46:15,359 INFO L93 Difference]: Finished difference Result 27942 states and 36926 transitions. [2020-10-29 07:46:15,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:46:15,361 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 458 [2020-10-29 07:46:15,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:46:15,411 INFO L225 Difference]: With dead ends: 27942 [2020-10-29 07:46:15,411 INFO L226 Difference]: Without dead ends: 14187 [2020-10-29 07:46:15,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:46:15,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14187 states. [2020-10-29 07:46:15,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14187 to 13510. [2020-10-29 07:46:15,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13510 states. [2020-10-29 07:46:15,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13510 states to 13510 states and 16538 transitions. [2020-10-29 07:46:15,800 INFO L78 Accepts]: Start accepts. Automaton has 13510 states and 16538 transitions. Word has length 458 [2020-10-29 07:46:15,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:46:15,801 INFO L481 AbstractCegarLoop]: Abstraction has 13510 states and 16538 transitions. [2020-10-29 07:46:15,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:46:15,801 INFO L276 IsEmpty]: Start isEmpty. Operand 13510 states and 16538 transitions. [2020-10-29 07:46:15,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2020-10-29 07:46:15,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:46:15,816 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:46:15,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:46:15,817 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:46:15,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:46:15,818 INFO L82 PathProgramCache]: Analyzing trace with hash 865482689, now seen corresponding path program 1 times [2020-10-29 07:46:15,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:46:15,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404436376] [2020-10-29 07:46:15,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:46:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:16,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:16,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:16,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:17,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:17,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:21,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:21,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 495 [2020-10-29 07:46:21,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:46:21,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-29 07:46:21,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:21,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:21,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:21,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 07:46:21,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-29 07:46:21,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:21,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:46:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:21,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:21,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:21,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:46:21,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:21,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:46:21,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:21,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:21,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:46:21,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:21,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:46:21,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:21,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:46:21,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:21,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:21,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:21,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:46:21,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:21,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-29 07:46:21,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:21,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:21,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:46:21,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:21,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:46:21,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:21,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:46:21,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:21,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:21,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:21,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:46:21,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:21,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-29 07:46:21,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:21,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:21,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:21,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:46:21,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:46:21,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:21,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-29 07:46:21,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:21,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:21,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:21,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 07:46:21,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:21,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:46:21,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:21,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:21,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:46:21,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-29 07:46:21,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:46:21,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:21,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2020-10-29 07:46:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:21,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:22,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:22,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 07:46:22,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:22,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 07:46:22,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:22,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:22,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:46:22,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-29 07:46:22,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:46:22,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:22,157 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 128 proven. 163 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2020-10-29 07:46:22,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404436376] [2020-10-29 07:46:22,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:46:22,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:46:22,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792931783] [2020-10-29 07:46:22,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:46:22,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:46:22,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:46:22,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:46:22,160 INFO L87 Difference]: Start difference. First operand 13510 states and 16538 transitions. Second operand 7 states. [2020-10-29 07:46:44,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:46:44,787 INFO L93 Difference]: Finished difference Result 32395 states and 41120 transitions. [2020-10-29 07:46:44,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:46:44,789 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 477 [2020-10-29 07:46:44,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:46:44,862 INFO L225 Difference]: With dead ends: 32395 [2020-10-29 07:46:44,863 INFO L226 Difference]: Without dead ends: 18521 [2020-10-29 07:46:44,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:46:44,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18521 states. [2020-10-29 07:46:45,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18521 to 16946. [2020-10-29 07:46:45,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16946 states. [2020-10-29 07:46:45,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16946 states to 16946 states and 19944 transitions. [2020-10-29 07:46:45,337 INFO L78 Accepts]: Start accepts. Automaton has 16946 states and 19944 transitions. Word has length 477 [2020-10-29 07:46:45,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:46:45,338 INFO L481 AbstractCegarLoop]: Abstraction has 16946 states and 19944 transitions. [2020-10-29 07:46:45,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:46:45,338 INFO L276 IsEmpty]: Start isEmpty. Operand 16946 states and 19944 transitions. [2020-10-29 07:46:45,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2020-10-29 07:46:45,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:46:45,352 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 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] [2020-10-29 07:46:45,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:46:45,353 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:46:45,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:46:45,353 INFO L82 PathProgramCache]: Analyzing trace with hash 968622421, now seen corresponding path program 1 times [2020-10-29 07:46:45,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:46:45,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325590208] [2020-10-29 07:46:45,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:46:45,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:45,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:45,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:48,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:48,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 499 [2020-10-29 07:46:48,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:46:48,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2825 [2020-10-29 07:46:48,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:48,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:48,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:48,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-29 07:46:48,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:46:48,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:48,555 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 07:46:48,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:46:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:48,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:48,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:48,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:46:48,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:48,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 07:46:48,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:48,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:48,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:46:48,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:48,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:46:48,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:46:48,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:46:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:48,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:48,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:48,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:46:48,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:48,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-29 07:46:48,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:48,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:48,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:46:48,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:48,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:46:48,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:48,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:46:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:48,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:49,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:49,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:46:49,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:49,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-29 07:46:49,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:49,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:49,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:46:49,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:49,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:46:49,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:46:49,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-29 07:46:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:49,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:49,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:49,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:46:49,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:49,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-29 07:46:49,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:49,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:49,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:49,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:46:49,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:46:49,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:49,626 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 186 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:46:49,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325590208] [2020-10-29 07:46:49,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:46:49,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:46:49,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656248757] [2020-10-29 07:46:49,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:46:49,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:46:49,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:46:49,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:46:49,629 INFO L87 Difference]: Start difference. First operand 16946 states and 19944 transitions. Second operand 8 states. [2020-10-29 07:47:08,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:47:08,981 INFO L93 Difference]: Finished difference Result 35805 states and 42082 transitions. [2020-10-29 07:47:08,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 07:47:08,983 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 483 [2020-10-29 07:47:08,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:47:09,045 INFO L225 Difference]: With dead ends: 35805 [2020-10-29 07:47:09,045 INFO L226 Difference]: Without dead ends: 19172 [2020-10-29 07:47:09,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 07:47:09,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19172 states. [2020-10-29 07:47:09,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19172 to 18823. [2020-10-29 07:47:09,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18823 states. [2020-10-29 07:47:09,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18823 states to 18823 states and 21600 transitions. [2020-10-29 07:47:09,720 INFO L78 Accepts]: Start accepts. Automaton has 18823 states and 21600 transitions. Word has length 483 [2020-10-29 07:47:09,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:47:09,721 INFO L481 AbstractCegarLoop]: Abstraction has 18823 states and 21600 transitions. [2020-10-29 07:47:09,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:47:09,721 INFO L276 IsEmpty]: Start isEmpty. Operand 18823 states and 21600 transitions. [2020-10-29 07:47:09,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2020-10-29 07:47:09,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:47:09,727 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 07:47:09,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:47:09,727 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:47:09,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:47:09,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1125333605, now seen corresponding path program 1 times [2020-10-29 07:47:09,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:47:09,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653408000] [2020-10-29 07:47:09,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:47:09,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:09,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:10,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:12,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:12,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 510 [2020-10-29 07:47:12,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:47:12,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2276 [2020-10-29 07:47:12,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:12,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:12,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:12,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:47:12,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:47:12,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:12,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:47:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:12,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:12,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:12,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:47:12,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:12,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:47:12,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:12,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:12,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:47:12,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:12,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:47:12,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:12,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:47:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:12,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:12,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:12,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:47:12,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:12,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-29 07:47:12,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:12,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:12,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:47:12,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:12,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:47:12,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:12,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:47:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:12,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:12,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:12,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:47:12,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:12,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-29 07:47:12,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:12,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:12,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:12,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:47:12,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:47:12,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:13,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-29 07:47:13,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:13,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:13,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:13,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 07:47:13,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:13,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 07:47:13,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:13,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:13,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:47:13,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-29 07:47:13,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:47:13,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:13,431 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 133 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-29 07:47:13,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653408000] [2020-10-29 07:47:13,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:47:13,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:47:13,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939605989] [2020-10-29 07:47:13,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:47:13,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:47:13,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:47:13,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:47:13,434 INFO L87 Difference]: Start difference. First operand 18823 states and 21600 transitions. Second operand 7 states. [2020-10-29 07:47:16,463 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 07:47:18,865 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 07:47:25,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:47:25,443 INFO L93 Difference]: Finished difference Result 40214 states and 46046 transitions. [2020-10-29 07:47:25,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:47:25,451 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 494 [2020-10-29 07:47:25,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:47:25,502 INFO L225 Difference]: With dead ends: 40214 [2020-10-29 07:47:25,502 INFO L226 Difference]: Without dead ends: 21706 [2020-10-29 07:47:25,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:47:25,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21706 states. [2020-10-29 07:47:25,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21706 to 21023. [2020-10-29 07:47:25,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21023 states. [2020-10-29 07:47:26,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21023 states to 21023 states and 23965 transitions. [2020-10-29 07:47:26,009 INFO L78 Accepts]: Start accepts. Automaton has 21023 states and 23965 transitions. Word has length 494 [2020-10-29 07:47:26,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:47:26,009 INFO L481 AbstractCegarLoop]: Abstraction has 21023 states and 23965 transitions. [2020-10-29 07:47:26,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:47:26,010 INFO L276 IsEmpty]: Start isEmpty. Operand 21023 states and 23965 transitions. [2020-10-29 07:47:26,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2020-10-29 07:47:26,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:47:26,016 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 07:47:26,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 07:47:26,017 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:47:26,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:47:26,017 INFO L82 PathProgramCache]: Analyzing trace with hash -452822675, now seen corresponding path program 1 times [2020-10-29 07:47:26,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:47:26,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262681731] [2020-10-29 07:47:26,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:47:26,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:26,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:26,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:26,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 522 [2020-10-29 07:47:26,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:26,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 714 [2020-10-29 07:47:26,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:26,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:26,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:26,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:47:26,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 07:47:26,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:26,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:47:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:26,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:26,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:26,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:47:26,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:26,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:47:26,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:26,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:26,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:47:26,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:26,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:47:26,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:27,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:47:27,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:27,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:27,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:27,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:47:27,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:27,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 07:47:27,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:27,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:27,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:47:27,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:27,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:47:27,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:27,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:47:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:27,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:27,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:27,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:47:27,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:27,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-29 07:47:27,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:27,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:27,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:47:27,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:27,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:47:27,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:27,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:47:27,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:27,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:27,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:27,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 07:47:27,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:27,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 07:47:27,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:27,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:27,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:27,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:47:27,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 07:47:27,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:27,700 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:47:27,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262681731] [2020-10-29 07:47:27,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:47:27,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:47:27,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031336853] [2020-10-29 07:47:27,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:47:27,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:47:27,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:47:27,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:47:27,702 INFO L87 Difference]: Start difference. First operand 21023 states and 23965 transitions. Second operand 7 states.