/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/Problem11_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 06:48:05,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 06:48:05,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 06:48:05,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 06:48:05,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 06:48:05,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 06:48:05,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 06:48:05,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 06:48:05,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 06:48:05,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 06:48:05,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 06:48:05,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 06:48:05,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 06:48:05,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 06:48:05,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 06:48:05,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 06:48:05,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 06:48:05,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 06:48:05,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 06:48:05,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 06:48:05,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 06:48:05,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 06:48:05,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 06:48:05,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 06:48:05,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 06:48:05,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 06:48:05,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 06:48:05,273 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 06:48:05,273 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 06:48:05,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 06:48:05,275 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 06:48:05,276 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 06:48:05,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 06:48:05,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 06:48:05,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 06:48:05,296 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 06:48:05,297 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 06:48:05,297 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 06:48:05,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 06:48:05,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 06:48:05,299 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 06:48:05,307 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 06:48:05,361 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 06:48:05,362 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 06:48:05,366 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 06:48:05,367 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 06:48:05,367 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 06:48:05,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 06:48:05,368 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 06:48:05,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 06:48:05,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 06:48:05,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 06:48:05,369 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 06:48:05,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 06:48:05,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 06:48:05,370 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 06:48:05,370 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 06:48:05,371 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 06:48:05,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 06:48:05,371 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 06:48:05,371 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 06:48:05,372 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 06:48:05,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 06:48:05,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:48:05,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 06:48:05,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 06:48:05,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 06:48:05,373 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 06:48:05,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 06:48:05,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 06:48:05,374 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 06:48:05,374 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 06:48:05,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 06:48:05,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 06:48:05,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 06:48:05,966 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 06:48:05,967 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 06:48:05,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label35.c [2020-10-29 06:48:06,055 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8e69bd32/ce59adaf297245408d0b9be48822de2a/FLAGec155bdb3 [2020-10-29 06:48:06,913 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 06:48:06,914 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label35.c [2020-10-29 06:48:06,940 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8e69bd32/ce59adaf297245408d0b9be48822de2a/FLAGec155bdb3 [2020-10-29 06:48:07,082 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8e69bd32/ce59adaf297245408d0b9be48822de2a [2020-10-29 06:48:07,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 06:48:07,094 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 06:48:07,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 06:48:07,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 06:48:07,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 06:48:07,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:48:07" (1/1) ... [2020-10-29 06:48:07,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7015976b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:48:07, skipping insertion in model container [2020-10-29 06:48:07,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:48:07" (1/1) ... [2020-10-29 06:48:07,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 06:48:07,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 06:48:07,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:48:07,785 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 06:48:08,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:48:08,082 INFO L208 MainTranslator]: Completed translation [2020-10-29 06:48:08,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:48:08 WrapperNode [2020-10-29 06:48:08,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 06:48:08,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 06:48:08,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 06:48:08,084 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 06:48:08,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:48:08" (1/1) ... [2020-10-29 06:48:08,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:48:08" (1/1) ... [2020-10-29 06:48:08,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:48:08" (1/1) ... [2020-10-29 06:48:08,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:48:08" (1/1) ... [2020-10-29 06:48:08,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:48:08" (1/1) ... [2020-10-29 06:48:08,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:48:08" (1/1) ... [2020-10-29 06:48:08,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:48:08" (1/1) ... [2020-10-29 06:48:08,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 06:48:08,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 06:48:08,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 06:48:08,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 06:48:08,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:48:08" (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 06:48:08,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 06:48:08,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 06:48:08,335 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 06:48:08,335 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 06:48:08,336 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 06:48:08,336 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 06:48:08,336 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 06:48:08,336 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 06:48:08,336 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 06:48:08,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 06:48:08,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 06:48:08,337 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 06:48:08,337 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 06:48:08,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 06:48:08,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 06:48:08,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 06:48:08,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 06:48:08,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 06:48:08,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 06:48:10,250 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 06:48:10,250 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 06:48:10,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:48:10 BoogieIcfgContainer [2020-10-29 06:48:10,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 06:48:10,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 06:48:10,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 06:48:10,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 06:48:10,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:48:07" (1/3) ... [2020-10-29 06:48:10,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@708e7ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:48:10, skipping insertion in model container [2020-10-29 06:48:10,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:48:08" (2/3) ... [2020-10-29 06:48:10,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@708e7ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:48:10, skipping insertion in model container [2020-10-29 06:48:10,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:48:10" (3/3) ... [2020-10-29 06:48:10,262 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label35.c [2020-10-29 06:48:10,275 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 06:48:10,281 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 06:48:10,295 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 06:48:10,327 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 06:48:10,327 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 06:48:10,327 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 06:48:10,327 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 06:48:10,328 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 06:48:10,328 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 06:48:10,328 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 06:48:10,328 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 06:48:10,354 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-29 06:48:10,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 06:48:10,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:10,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:48:10,365 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:10,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:10,372 INFO L82 PathProgramCache]: Analyzing trace with hash -277936506, now seen corresponding path program 1 times [2020-10-29 06:48:10,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:10,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474972750] [2020-10-29 06:48:10,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:10,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:11,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:11,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:48:11,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:11,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 654 [2020-10-29 06:48:11,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:11,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:11,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:48:11,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:48:11,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 06:48:11,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 06:48:11,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:11,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:11,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:11,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:11,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:11,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 06:48:11,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:11,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:11,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:11,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:11,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:48:11,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:48:11,584 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 06:48:11,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474972750] [2020-10-29 06:48:11,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:48:11,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 06:48:11,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315415248] [2020-10-29 06:48:11,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 06:48:11,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:11,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 06:48:11,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 06:48:11,614 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 4 states. [2020-10-29 06:48:14,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:14,955 INFO L93 Difference]: Finished difference Result 796 states and 1392 transitions. [2020-10-29 06:48:14,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:48:14,957 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-10-29 06:48:14,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:14,976 INFO L225 Difference]: With dead ends: 796 [2020-10-29 06:48:14,976 INFO L226 Difference]: Without dead ends: 435 [2020-10-29 06:48:14,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:48:15,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-10-29 06:48:15,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 431. [2020-10-29 06:48:15,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-10-29 06:48:15,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 619 transitions. [2020-10-29 06:48:15,104 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 619 transitions. Word has length 65 [2020-10-29 06:48:15,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:15,105 INFO L481 AbstractCegarLoop]: Abstraction has 431 states and 619 transitions. [2020-10-29 06:48:15,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 06:48:15,111 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 619 transitions. [2020-10-29 06:48:15,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-29 06:48:15,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:15,122 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:48:15,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 06:48:15,122 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:15,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:15,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1782822709, now seen corresponding path program 1 times [2020-10-29 06:48:15,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:15,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498973280] [2020-10-29 06:48:15,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:15,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:15,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:16,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:17,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:17,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 06:48:17,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:48:17,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2043 [2020-10-29 06:48:17,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:17,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:17,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:17,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-29 06:48:17,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 06:48:17,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:48:17,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:17,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:17,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:17,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:17,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:17,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:17,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 06:48:17,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:17,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:17,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:17,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:17,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:17,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:48:17,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:17,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:17,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:17,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:17,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 06:48:17,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:17,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-29 06:48:17,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:17,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:17,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:17,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:17,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 06:48:17,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:48:17,683 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:48:17,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498973280] [2020-10-29 06:48:17,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:17,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:48:17,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528532043] [2020-10-29 06:48:17,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:48:17,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:17,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:48:17,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:48:17,691 INFO L87 Difference]: Start difference. First operand 431 states and 619 transitions. Second operand 5 states. [2020-10-29 06:48:20,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:20,435 INFO L93 Difference]: Finished difference Result 1260 states and 1834 transitions. [2020-10-29 06:48:20,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:48:20,440 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-10-29 06:48:20,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:20,448 INFO L225 Difference]: With dead ends: 1260 [2020-10-29 06:48:20,448 INFO L226 Difference]: Without dead ends: 835 [2020-10-29 06:48:20,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:48:20,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2020-10-29 06:48:20,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 819. [2020-10-29 06:48:20,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 819 states. [2020-10-29 06:48:20,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1097 transitions. [2020-10-29 06:48:20,504 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1097 transitions. Word has length 137 [2020-10-29 06:48:20,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:20,505 INFO L481 AbstractCegarLoop]: Abstraction has 819 states and 1097 transitions. [2020-10-29 06:48:20,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:48:20,506 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1097 transitions. [2020-10-29 06:48:20,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-29 06:48:20,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:20,511 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:48:20,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 06:48:20,511 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:20,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:20,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1744392591, now seen corresponding path program 1 times [2020-10-29 06:48:20,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:20,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319581294] [2020-10-29 06:48:20,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:20,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:20,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:20,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:22,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:22,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-29 06:48:22,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:48:22,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2052 [2020-10-29 06:48:22,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:22,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:22,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:22,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 06:48:22,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 06:48:22,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:48:22,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:22,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:22,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:22,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:22,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:22,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:22,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:48:22,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:22,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:22,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:22,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:22,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:22,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:48:22,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:22,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:22,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:22,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:22,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:48:22,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:22,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 06:48:22,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:22,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:22,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:22,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:22,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 06:48:22,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:22,938 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:48:22,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319581294] [2020-10-29 06:48:22,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:22,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:48:22,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004333339] [2020-10-29 06:48:22,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:48:22,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:22,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:48:22,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:48:22,941 INFO L87 Difference]: Start difference. First operand 819 states and 1097 transitions. Second operand 5 states. [2020-10-29 06:48:25,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:25,683 INFO L93 Difference]: Finished difference Result 2032 states and 2795 transitions. [2020-10-29 06:48:25,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:48:25,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-29 06:48:25,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:25,698 INFO L225 Difference]: With dead ends: 2032 [2020-10-29 06:48:25,698 INFO L226 Difference]: Without dead ends: 1219 [2020-10-29 06:48:25,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:48:25,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2020-10-29 06:48:25,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1201. [2020-10-29 06:48:25,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1201 states. [2020-10-29 06:48:25,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1573 transitions. [2020-10-29 06:48:25,774 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1573 transitions. Word has length 139 [2020-10-29 06:48:25,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:25,776 INFO L481 AbstractCegarLoop]: Abstraction has 1201 states and 1573 transitions. [2020-10-29 06:48:25,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:48:25,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1573 transitions. [2020-10-29 06:48:25,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-29 06:48:25,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:25,788 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:48:25,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 06:48:25,788 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:25,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:25,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1745933349, now seen corresponding path program 1 times [2020-10-29 06:48:25,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:25,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460868990] [2020-10-29 06:48:25,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:25,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:25,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:26,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:28,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:28,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:28,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-29 06:48:28,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:48:28,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2456 [2020-10-29 06:48:28,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:28,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:28,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 06:48:28,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:48:28,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-29 06:48:28,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:48:28,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:28,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:28,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:28,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:28,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:28,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 06:48:28,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:28,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:28,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:28,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:28,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:48:28,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:48:28,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:28,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:28,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:28,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:28,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:48:28,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:48:28,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-10-29 06:48:28,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:28,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:28,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:28,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:28,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 06:48:28,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:29,048 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 06:48:29,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460868990] [2020-10-29 06:48:29,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:29,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:48:29,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871868651] [2020-10-29 06:48:29,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:48:29,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:29,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:48:29,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:48:29,052 INFO L87 Difference]: Start difference. First operand 1201 states and 1573 transitions. Second operand 7 states. [2020-10-29 06:48:31,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:31,839 INFO L93 Difference]: Finished difference Result 3230 states and 4394 transitions. [2020-10-29 06:48:31,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:48:31,840 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 145 [2020-10-29 06:48:31,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:31,858 INFO L225 Difference]: With dead ends: 3230 [2020-10-29 06:48:31,858 INFO L226 Difference]: Without dead ends: 2035 [2020-10-29 06:48:31,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:48:31,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2020-10-29 06:48:31,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 2008. [2020-10-29 06:48:31,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-10-29 06:48:31,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 2562 transitions. [2020-10-29 06:48:31,967 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 2562 transitions. Word has length 145 [2020-10-29 06:48:31,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:31,967 INFO L481 AbstractCegarLoop]: Abstraction has 2008 states and 2562 transitions. [2020-10-29 06:48:31,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:48:31,968 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 2562 transitions. [2020-10-29 06:48:31,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-29 06:48:31,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:31,973 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:48:31,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 06:48:31,973 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:31,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:31,974 INFO L82 PathProgramCache]: Analyzing trace with hash -977463726, now seen corresponding path program 1 times [2020-10-29 06:48:31,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:31,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28552447] [2020-10-29 06:48:31,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:32,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:32,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:32,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:32,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-29 06:48:32,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:32,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 403 [2020-10-29 06:48:32,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:32,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:32,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:32,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:48:32,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 06:48:32,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:32,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:32,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:32,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:32,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:32,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:32,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 06:48:32,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:32,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:32,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:32,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:32,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:32,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:32,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:32,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:32,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:32,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:32,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:48:32,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:32,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-29 06:48:32,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:32,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:32,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:32,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:32,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:48:32,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:32,910 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:48:32,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28552447] [2020-10-29 06:48:32,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:32,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:48:32,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3679827] [2020-10-29 06:48:32,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:48:32,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:32,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:48:32,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:48:32,913 INFO L87 Difference]: Start difference. First operand 2008 states and 2562 transitions. Second operand 6 states. [2020-10-29 06:48:37,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:37,113 INFO L93 Difference]: Finished difference Result 4819 states and 6309 transitions. [2020-10-29 06:48:37,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:48:37,116 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 196 [2020-10-29 06:48:37,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:37,133 INFO L225 Difference]: With dead ends: 4819 [2020-10-29 06:48:37,134 INFO L226 Difference]: Without dead ends: 2817 [2020-10-29 06:48:37,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:48:37,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2020-10-29 06:48:37,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2593. [2020-10-29 06:48:37,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2593 states. [2020-10-29 06:48:37,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2593 states to 2593 states and 3384 transitions. [2020-10-29 06:48:37,247 INFO L78 Accepts]: Start accepts. Automaton has 2593 states and 3384 transitions. Word has length 196 [2020-10-29 06:48:37,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:37,247 INFO L481 AbstractCegarLoop]: Abstraction has 2593 states and 3384 transitions. [2020-10-29 06:48:37,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:48:37,248 INFO L276 IsEmpty]: Start isEmpty. Operand 2593 states and 3384 transitions. [2020-10-29 06:48:37,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-29 06:48:37,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:37,253 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:48:37,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 06:48:37,254 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:37,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:37,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1850122140, now seen corresponding path program 1 times [2020-10-29 06:48:37,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:37,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111792872] [2020-10-29 06:48:37,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:37,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:37,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:37,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:37,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:39,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:41,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:42,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:42,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-29 06:48:42,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:48:42,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-29 06:48:42,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:42,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:42,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:48:42,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 06:48:42,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-29 06:48:42,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:48:42,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:42,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:42,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:42,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:42,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:42,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 06:48:42,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:42,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:42,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:42,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:42,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:42,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:48:42,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:42,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:42,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:42,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:48:42,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:42,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 06:48:42,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:42,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:42,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:42,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:42,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 06:48:42,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:48:42,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-29 06:48:42,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:42,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:42,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:42,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 06:48:42,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:42,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-29 06:48:42,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:42,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:42,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:42,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:42,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 06:48:42,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:42,934 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 123 proven. 57 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 06:48:42,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111792872] [2020-10-29 06:48:42,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:42,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:48:42,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853889126] [2020-10-29 06:48:42,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:48:42,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:42,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:48:42,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:48:42,938 INFO L87 Difference]: Start difference. First operand 2593 states and 3384 transitions. Second operand 6 states. [2020-10-29 06:48:46,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:46,122 INFO L93 Difference]: Finished difference Result 7136 states and 9591 transitions. [2020-10-29 06:48:46,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:48:46,123 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 210 [2020-10-29 06:48:46,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:46,154 INFO L225 Difference]: With dead ends: 7136 [2020-10-29 06:48:46,154 INFO L226 Difference]: Without dead ends: 4549 [2020-10-29 06:48:46,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 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 06:48:46,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4549 states. [2020-10-29 06:48:46,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4549 to 4526. [2020-10-29 06:48:46,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4526 states. [2020-10-29 06:48:46,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4526 states to 4526 states and 6052 transitions. [2020-10-29 06:48:46,318 INFO L78 Accepts]: Start accepts. Automaton has 4526 states and 6052 transitions. Word has length 210 [2020-10-29 06:48:46,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:46,318 INFO L481 AbstractCegarLoop]: Abstraction has 4526 states and 6052 transitions. [2020-10-29 06:48:46,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:48:46,319 INFO L276 IsEmpty]: Start isEmpty. Operand 4526 states and 6052 transitions. [2020-10-29 06:48:46,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-29 06:48:46,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:46,327 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:48:46,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 06:48:46,327 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:46,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:46,328 INFO L82 PathProgramCache]: Analyzing trace with hash 555983624, now seen corresponding path program 1 times [2020-10-29 06:48:46,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:46,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062379576] [2020-10-29 06:48:46,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:46,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:46,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:46,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:46,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:49,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:51,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:51,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:51,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-29 06:48:51,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 06:48:51,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 06:48:51,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:51,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:51,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 06:48:51,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:48:51,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-29 06:48:51,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:51,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:51,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:51,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:51,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:51,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:51,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 06:48:51,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:51,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:51,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:51,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:51,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:48:51,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:51,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:51,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:51,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:51,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:51,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 06:48:51,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:48:51,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-29 06:48:51,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:51,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:51,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:51,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:51,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 06:48:51,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:51,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 06:48:51,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:51,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:51,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:51,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 06:48:51,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:51,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-29 06:48:51,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:51,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:51,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:51,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:51,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 06:48:51,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:48:52,343 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 180 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 06:48:52,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062379576] [2020-10-29 06:48:52,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:52,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:48:52,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388705226] [2020-10-29 06:48:52,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:48:52,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:52,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:48:52,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:48:52,347 INFO L87 Difference]: Start difference. First operand 4526 states and 6052 transitions. Second operand 7 states. [2020-10-29 06:48:55,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:55,360 INFO L93 Difference]: Finished difference Result 11215 states and 15529 transitions. [2020-10-29 06:48:55,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 06:48:55,361 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 228 [2020-10-29 06:48:55,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:55,400 INFO L225 Difference]: With dead ends: 11215 [2020-10-29 06:48:55,401 INFO L226 Difference]: Without dead ends: 6695 [2020-10-29 06:48:55,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:48:55,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6695 states. [2020-10-29 06:48:55,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6695 to 6492. [2020-10-29 06:48:55,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6492 states. [2020-10-29 06:48:55,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6492 states to 6492 states and 8516 transitions. [2020-10-29 06:48:55,649 INFO L78 Accepts]: Start accepts. Automaton has 6492 states and 8516 transitions. Word has length 228 [2020-10-29 06:48:55,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:55,649 INFO L481 AbstractCegarLoop]: Abstraction has 6492 states and 8516 transitions. [2020-10-29 06:48:55,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:48:55,650 INFO L276 IsEmpty]: Start isEmpty. Operand 6492 states and 8516 transitions. [2020-10-29 06:48:55,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-29 06:48:55,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:55,659 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 06:48:55,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 06:48:55,660 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:55,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:55,660 INFO L82 PathProgramCache]: Analyzing trace with hash 836638656, now seen corresponding path program 1 times [2020-10-29 06:48:55,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:55,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363510780] [2020-10-29 06:48:55,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:55,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:55,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:56,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:56,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:00,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:00,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-29 06:49:00,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:49:00,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 06:49:00,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:00,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:00,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:00,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 06:49:00,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 06:49:00,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:00,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:49:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:00,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:00,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:00,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:49:00,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:00,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:49:00,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:00,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:00,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:00,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:00,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:00,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:00,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:49:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:00,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:00,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:00,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:49:00,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:00,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-29 06:49:00,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:00,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:00,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:49:00,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:00,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 06:49:00,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:49:01,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-29 06:49:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:01,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:01,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:01,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 06:49:01,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:01,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-29 06:49:01,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:01,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:01,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:01,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:49:01,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 06:49:01,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:01,351 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 185 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:49:01,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363510780] [2020-10-29 06:49:01,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:49:01,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:49:01,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439421449] [2020-10-29 06:49:01,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:49:01,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:49:01,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:49:01,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:49:01,357 INFO L87 Difference]: Start difference. First operand 6492 states and 8516 transitions. Second operand 7 states. [2020-10-29 06:49:05,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:49:05,208 INFO L93 Difference]: Finished difference Result 16507 states and 23962 transitions. [2020-10-29 06:49:05,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:49:05,209 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 228 [2020-10-29 06:49:05,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:49:05,277 INFO L225 Difference]: With dead ends: 16507 [2020-10-29 06:49:05,277 INFO L226 Difference]: Without dead ends: 10021 [2020-10-29 06:49:05,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:49:05,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10021 states. [2020-10-29 06:49:05,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10021 to 9361. [2020-10-29 06:49:05,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9361 states. [2020-10-29 06:49:05,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9361 states to 9361 states and 11895 transitions. [2020-10-29 06:49:05,706 INFO L78 Accepts]: Start accepts. Automaton has 9361 states and 11895 transitions. Word has length 228 [2020-10-29 06:49:05,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:49:05,706 INFO L481 AbstractCegarLoop]: Abstraction has 9361 states and 11895 transitions. [2020-10-29 06:49:05,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:49:05,706 INFO L276 IsEmpty]: Start isEmpty. Operand 9361 states and 11895 transitions. [2020-10-29 06:49:05,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-29 06:49:05,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:49:05,716 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:49:05,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 06:49:05,716 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:49:05,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:49:05,717 INFO L82 PathProgramCache]: Analyzing trace with hash 809147580, now seen corresponding path program 1 times [2020-10-29 06:49:05,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:49:05,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934191233] [2020-10-29 06:49:05,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:49:05,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:05,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:05,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:06,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:08,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:08,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-29 06:49:08,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:49:08,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2315 [2020-10-29 06:49:08,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:08,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:08,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:08,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-29 06:49:08,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:49:08,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:08,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:49:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:08,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:08,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:08,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:49:08,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:08,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:49:08,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:08,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:08,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:08,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:08,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:08,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:08,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:49:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:08,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:08,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:08,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 06:49:08,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:08,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 06:49:08,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:08,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:08,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:49:08,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:08,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 06:49:08,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:49:08,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 06:49:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:08,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:08,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:08,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:49:08,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:08,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-29 06:49:08,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:08,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:08,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:08,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:49:08,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:49:08,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:08,789 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:49:08,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934191233] [2020-10-29 06:49:08,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:49:08,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:49:08,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292941248] [2020-10-29 06:49:08,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:49:08,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:49:08,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:49:08,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:49:08,791 INFO L87 Difference]: Start difference. First operand 9361 states and 11895 transitions. Second operand 7 states. [2020-10-29 06:49:11,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:49:11,732 INFO L93 Difference]: Finished difference Result 19130 states and 24319 transitions. [2020-10-29 06:49:11,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:49:11,733 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 231 [2020-10-29 06:49:11,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:49:11,777 INFO L225 Difference]: With dead ends: 19130 [2020-10-29 06:49:11,777 INFO L226 Difference]: Without dead ends: 9583 [2020-10-29 06:49:11,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 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 06:49:11,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9583 states. [2020-10-29 06:49:12,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9583 to 9563. [2020-10-29 06:49:12,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9563 states. [2020-10-29 06:49:12,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9563 states to 9563 states and 12052 transitions. [2020-10-29 06:49:12,067 INFO L78 Accepts]: Start accepts. Automaton has 9563 states and 12052 transitions. Word has length 231 [2020-10-29 06:49:12,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:49:12,069 INFO L481 AbstractCegarLoop]: Abstraction has 9563 states and 12052 transitions. [2020-10-29 06:49:12,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:49:12,069 INFO L276 IsEmpty]: Start isEmpty. Operand 9563 states and 12052 transitions. [2020-10-29 06:49:12,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-29 06:49:12,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:49:12,083 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:49:12,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 06:49:12,083 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:49:12,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:49:12,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1887965318, now seen corresponding path program 1 times [2020-10-29 06:49:12,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:49:12,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056831906] [2020-10-29 06:49:12,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:49:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:12,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:12,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:12,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:13,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:14,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:17,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:17,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-29 06:49:17,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:49:17,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-29 06:49:17,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:17,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:17,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:49:17,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-29 06:49:17,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-29 06:49:17,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:17,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:49:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:17,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:17,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:17,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:49:17,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:17,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:49:17,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:17,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:17,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:17,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:17,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:17,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:17,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:49:17,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:17,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:17,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:17,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 06:49:17,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:17,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 06:49:17,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:17,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:17,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:49:17,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:17,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 06:49:17,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:17,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 06:49:17,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:17,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:17,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:17,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:17,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 06:49:17,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:49:17,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-29 06:49:17,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:17,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:17,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:17,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:49:17,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-29 06:49:17,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:17,825 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 124 proven. 57 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 06:49:17,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056831906] [2020-10-29 06:49:17,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:49:17,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:49:17,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524931614] [2020-10-29 06:49:17,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:49:17,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:49:17,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:49:17,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:49:17,827 INFO L87 Difference]: Start difference. First operand 9563 states and 12052 transitions. Second operand 7 states. [2020-10-29 06:49:21,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:49:21,009 INFO L93 Difference]: Finished difference Result 20479 states and 25761 transitions. [2020-10-29 06:49:21,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:49:21,010 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 271 [2020-10-29 06:49:21,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:49:21,050 INFO L225 Difference]: With dead ends: 20479 [2020-10-29 06:49:21,050 INFO L226 Difference]: Without dead ends: 10922 [2020-10-29 06:49:21,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:49:21,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10922 states. [2020-10-29 06:49:21,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10922 to 10515. [2020-10-29 06:49:21,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10515 states. [2020-10-29 06:49:21,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10515 states to 10515 states and 13155 transitions. [2020-10-29 06:49:21,410 INFO L78 Accepts]: Start accepts. Automaton has 10515 states and 13155 transitions. Word has length 271 [2020-10-29 06:49:21,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:49:21,411 INFO L481 AbstractCegarLoop]: Abstraction has 10515 states and 13155 transitions. [2020-10-29 06:49:21,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:49:21,411 INFO L276 IsEmpty]: Start isEmpty. Operand 10515 states and 13155 transitions. [2020-10-29 06:49:21,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-29 06:49:21,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:49:21,424 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:49:21,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 06:49:21,425 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:49:21,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:49:21,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1097809736, now seen corresponding path program 1 times [2020-10-29 06:49:21,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:49:21,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466729712] [2020-10-29 06:49:21,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:49:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:21,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:21,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:21,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:22,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:26,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:26,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-29 06:49:26,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:49:26,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 06:49:26,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:26,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:26,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:26,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-29 06:49:26,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-29 06:49:26,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:26,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:49:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:26,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:26,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:26,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:49:26,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:26,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:49:26,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:26,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:26,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:26,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:26,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:26,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 06:49:26,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:49:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:26,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:26,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:26,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:49:26,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:26,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 06:49:26,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:26,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:26,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:49:26,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:26,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 06:49:26,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:26,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 06:49:26,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:26,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:27,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:27,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 06:49:27,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:27,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-29 06:49:27,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:27,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:27,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:27,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:49:27,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-29 06:49:27,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:27,180 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:49:27,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466729712] [2020-10-29 06:49:27,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:49:27,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:49:27,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074123767] [2020-10-29 06:49:27,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:49:27,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:49:27,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:49:27,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:49:27,182 INFO L87 Difference]: Start difference. First operand 10515 states and 13155 transitions. Second operand 7 states. [2020-10-29 06:49:32,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:49:32,528 INFO L93 Difference]: Finished difference Result 28019 states and 37110 transitions. [2020-10-29 06:49:32,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:49:32,530 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 272 [2020-10-29 06:49:32,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:49:32,610 INFO L225 Difference]: With dead ends: 28019 [2020-10-29 06:49:32,610 INFO L226 Difference]: Without dead ends: 16139 [2020-10-29 06:49:32,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:49:32,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16139 states. [2020-10-29 06:49:33,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16139 to 15472. [2020-10-29 06:49:33,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15472 states. [2020-10-29 06:49:33,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15472 states to 15472 states and 18810 transitions. [2020-10-29 06:49:33,115 INFO L78 Accepts]: Start accepts. Automaton has 15472 states and 18810 transitions. Word has length 272 [2020-10-29 06:49:33,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:49:33,116 INFO L481 AbstractCegarLoop]: Abstraction has 15472 states and 18810 transitions. [2020-10-29 06:49:33,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:49:33,116 INFO L276 IsEmpty]: Start isEmpty. Operand 15472 states and 18810 transitions. [2020-10-29 06:49:33,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-29 06:49:33,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:49:33,132 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:49:33,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 06:49:33,132 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:49:33,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:49:33,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1598574881, now seen corresponding path program 1 times [2020-10-29 06:49:33,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:49:33,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132117022] [2020-10-29 06:49:33,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:49:33,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:33,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:33,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:33,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:35,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:35,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-29 06:49:35,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:49:35,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2236 [2020-10-29 06:49:35,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:35,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:35,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 06:49:35,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:49:35,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 292 [2020-10-29 06:49:35,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:35,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:49:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:35,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:35,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:35,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:49:35,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:35,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 06:49:35,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:35,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:35,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:49:35,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:35,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:49:35,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:35,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:49:35,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:35,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:35,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:35,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:49:35,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:35,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-29 06:49:35,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:35,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:35,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:49:35,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:49:35,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 06:49:35,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:36,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:49:36,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:36,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:36,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:36,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 06:49:36,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:36,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 06:49:36,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:36,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:36,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:36,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:49:36,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 06:49:36,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:36,317 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 6 proven. 194 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 06:49:36,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132117022] [2020-10-29 06:49:36,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:49:36,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:49:36,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950571192] [2020-10-29 06:49:36,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 06:49:36,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:49:36,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 06:49:36,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-29 06:49:36,320 INFO L87 Difference]: Start difference. First operand 15472 states and 18810 transitions. Second operand 9 states. [2020-10-29 06:49:41,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:49:41,265 INFO L93 Difference]: Finished difference Result 35057 states and 43709 transitions. [2020-10-29 06:49:41,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 06:49:41,266 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 287 [2020-10-29 06:49:41,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:49:41,349 INFO L225 Difference]: With dead ends: 35057 [2020-10-29 06:49:41,349 INFO L226 Difference]: Without dead ends: 21859 [2020-10-29 06:49:41,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-29 06:49:41,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21859 states. [2020-10-29 06:49:41,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21859 to 21252. [2020-10-29 06:49:41,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21252 states. [2020-10-29 06:49:42,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21252 states to 21252 states and 25713 transitions. [2020-10-29 06:49:42,027 INFO L78 Accepts]: Start accepts. Automaton has 21252 states and 25713 transitions. Word has length 287 [2020-10-29 06:49:42,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:49:42,027 INFO L481 AbstractCegarLoop]: Abstraction has 21252 states and 25713 transitions. [2020-10-29 06:49:42,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 06:49:42,028 INFO L276 IsEmpty]: Start isEmpty. Operand 21252 states and 25713 transitions. [2020-10-29 06:49:42,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-29 06:49:42,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:49:42,047 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 06:49:42,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 06:49:42,047 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:49:42,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:49:42,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1582230335, now seen corresponding path program 1 times [2020-10-29 06:49:42,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:49:42,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410947220] [2020-10-29 06:49:42,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:49:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:42,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:42,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:42,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:42,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:47,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:47,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-29 06:49:47,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:49:47,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 06:49:47,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:47,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:47,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:47,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 06:49:47,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-29 06:49:47,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:47,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:49:47,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:47,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:47,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:47,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:49:47,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:47,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:49:47,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:47,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:47,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:47,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:47,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:47,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:47,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:49:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:47,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:47,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:47,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:49:47,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:47,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 06:49:47,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:47,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:47,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:49:47,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:47,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 06:49:47,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:47,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-29 06:49:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:47,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:47,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:47,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-29 06:49:47,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:47,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-29 06:49:47,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:47,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:47,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:47,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:49:47,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-29 06:49:47,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:47,752 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 185 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:49:47,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410947220] [2020-10-29 06:49:47,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:49:47,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:49:47,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592450378] [2020-10-29 06:49:47,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:49:47,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:49:47,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:49:47,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:49:47,754 INFO L87 Difference]: Start difference. First operand 21252 states and 25713 transitions. Second operand 7 states. [2020-10-29 06:49:53,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:49:53,007 INFO L93 Difference]: Finished difference Result 41380 states and 52172 transitions. [2020-10-29 06:49:53,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:49:53,008 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 300 [2020-10-29 06:49:53,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:49:53,100 INFO L225 Difference]: With dead ends: 41380 [2020-10-29 06:49:53,100 INFO L226 Difference]: Without dead ends: 22045 [2020-10-29 06:49:53,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:49:53,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22045 states. [2020-10-29 06:49:53,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22045 to 21237. [2020-10-29 06:49:53,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21237 states. [2020-10-29 06:49:53,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21237 states to 21237 states and 25301 transitions. [2020-10-29 06:49:53,902 INFO L78 Accepts]: Start accepts. Automaton has 21237 states and 25301 transitions. Word has length 300 [2020-10-29 06:49:53,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:49:53,902 INFO L481 AbstractCegarLoop]: Abstraction has 21237 states and 25301 transitions. [2020-10-29 06:49:53,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:49:53,902 INFO L276 IsEmpty]: Start isEmpty. Operand 21237 states and 25301 transitions. [2020-10-29 06:49:53,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-29 06:49:53,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:49:53,922 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:49:53,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 06:49:53,922 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:49:53,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:49:53,923 INFO L82 PathProgramCache]: Analyzing trace with hash 598018615, now seen corresponding path program 1 times [2020-10-29 06:49:53,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:49:53,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595634557] [2020-10-29 06:49:53,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:49:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:54,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:54,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:55,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:57,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:57,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-29 06:49:57,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:49:57,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3578 [2020-10-29 06:49:57,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:57,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:57,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 06:49:57,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:49:57,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 261 [2020-10-29 06:49:57,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:57,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:49:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:57,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:57,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:57,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:49:57,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:57,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 06:49:57,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:57,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:57,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:49:57,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:57,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:49:57,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:57,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:49:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:57,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:57,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:57,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:57,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 06:49:57,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:49:57,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-29 06:49:57,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:57,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:57,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:57,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:49:57,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-29 06:49:57,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:58,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-29 06:49:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:58,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:58,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:58,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:49:58,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:58,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 06:49:58,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:58,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:58,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:58,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:49:58,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:49:58,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:58,420 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-29 06:49:58,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595634557] [2020-10-29 06:49:58,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:49:58,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:49:58,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545159954] [2020-10-29 06:49:58,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:49:58,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:49:58,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:49:58,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:49:58,423 INFO L87 Difference]: Start difference. First operand 21237 states and 25301 transitions. Second operand 7 states. [2020-10-29 06:50:01,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:50:01,970 INFO L93 Difference]: Finished difference Result 43476 states and 51833 transitions. [2020-10-29 06:50:01,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:50:01,971 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 318 [2020-10-29 06:50:01,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:50:02,043 INFO L225 Difference]: With dead ends: 43476 [2020-10-29 06:50:02,043 INFO L226 Difference]: Without dead ends: 22625 [2020-10-29 06:50:02,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 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 06:50:02,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22625 states. [2020-10-29 06:50:02,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22625 to 21635. [2020-10-29 06:50:02,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21635 states. [2020-10-29 06:50:02,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21635 states to 21635 states and 25711 transitions. [2020-10-29 06:50:02,794 INFO L78 Accepts]: Start accepts. Automaton has 21635 states and 25711 transitions. Word has length 318 [2020-10-29 06:50:02,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:50:02,795 INFO L481 AbstractCegarLoop]: Abstraction has 21635 states and 25711 transitions. [2020-10-29 06:50:02,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:50:02,795 INFO L276 IsEmpty]: Start isEmpty. Operand 21635 states and 25711 transitions. [2020-10-29 06:50:02,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-10-29 06:50:02,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:50:02,809 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:50:02,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 06:50:02,810 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:50:02,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:50:02,810 INFO L82 PathProgramCache]: Analyzing trace with hash -563005700, now seen corresponding path program 1 times [2020-10-29 06:50:02,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:50:02,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668096352] [2020-10-29 06:50:02,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:50:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:02,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:03,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:03,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:03,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:07,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:07,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-29 06:50:07,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:50:07,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 06:50:07,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:07,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:07,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:50:07,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-29 06:50:07,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 06:50:07,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:08,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:50:08,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:08,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:08,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:08,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:50:08,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:08,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:50:08,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:08,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:08,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:50:08,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:08,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:50:08,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:08,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:50:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:08,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:08,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:08,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:50:08,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:08,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 06:50:08,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:08,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:08,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:50:08,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:08,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:50:08,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:08,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:50:08,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:08,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:08,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:08,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 06:50:08,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:08,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 06:50:08,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:08,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:08,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:50:08,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:08,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 06:50:08,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:08,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-29 06:50:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:08,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:08,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:08,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:08,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 06:50:08,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:50:08,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-29 06:50:08,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:08,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:08,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:50:08,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:08,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 06:50:08,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:08,510 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 179 proven. 3 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2020-10-29 06:50:08,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668096352] [2020-10-29 06:50:08,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:50:08,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:50:08,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851391481] [2020-10-29 06:50:08,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:50:08,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:50:08,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:50:08,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:50:08,512 INFO L87 Difference]: Start difference. First operand 21635 states and 25711 transitions. Second operand 6 states. [2020-10-29 06:50:11,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:50:11,195 INFO L93 Difference]: Finished difference Result 25442 states and 30321 transitions. [2020-10-29 06:50:11,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:50:11,196 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 355 [2020-10-29 06:50:11,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:50:11,262 INFO L225 Difference]: With dead ends: 25442 [2020-10-29 06:50:11,262 INFO L226 Difference]: Without dead ends: 25439 [2020-10-29 06:50:11,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:50:11,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25439 states. [2020-10-29 06:50:11,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25439 to 24083. [2020-10-29 06:50:11,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24083 states. [2020-10-29 06:50:11,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24083 states to 24083 states and 28836 transitions. [2020-10-29 06:50:11,792 INFO L78 Accepts]: Start accepts. Automaton has 24083 states and 28836 transitions. Word has length 355 [2020-10-29 06:50:11,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:50:11,793 INFO L481 AbstractCegarLoop]: Abstraction has 24083 states and 28836 transitions. [2020-10-29 06:50:11,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:50:11,793 INFO L276 IsEmpty]: Start isEmpty. Operand 24083 states and 28836 transitions. [2020-10-29 06:50:11,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-10-29 06:50:11,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:50:11,809 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:50:11,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 06:50:11,810 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:50:11,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:50:11,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1289274289, now seen corresponding path program 1 times [2020-10-29 06:50:11,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:50:11,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387132799] [2020-10-29 06:50:11,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:50:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:11,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:12,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:13,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:13,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 380 [2020-10-29 06:50:13,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:50:13,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1455 [2020-10-29 06:50:13,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:13,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:13,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 06:50:13,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:50:13,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 371 [2020-10-29 06:50:13,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:13,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:50:13,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:13,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:13,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:13,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:50:13,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:13,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:50:13,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:13,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:13,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:50:13,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:13,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:50:13,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:13,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:50:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:13,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:13,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:13,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:50:13,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:13,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-29 06:50:13,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:13,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:13,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:50:13,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:50:13,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 06:50:13,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:13,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:50:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:13,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:13,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:13,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 06:50:13,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:13,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-29 06:50:13,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:13,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:13,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:50:13,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:50:13,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 06:50:13,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:13,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-29 06:50:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:13,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:14,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:14,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:50:14,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:14,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-29 06:50:14,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:14,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:14,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:50:14,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:50:14,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:50:14,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:14,188 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 93 proven. 250 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-29 06:50:14,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387132799] [2020-10-29 06:50:14,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:50:14,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:50:14,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823622014] [2020-10-29 06:50:14,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 06:50:14,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:50:14,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 06:50:14,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-29 06:50:14,191 INFO L87 Difference]: Start difference. First operand 24083 states and 28836 transitions. Second operand 9 states. [2020-10-29 06:50:19,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:50:19,601 INFO L93 Difference]: Finished difference Result 52088 states and 63830 transitions. [2020-10-29 06:50:19,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 06:50:19,602 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 364 [2020-10-29 06:50:19,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:50:19,689 INFO L225 Difference]: With dead ends: 52088 [2020-10-29 06:50:19,689 INFO L226 Difference]: Without dead ends: 30895 [2020-10-29 06:50:19,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-29 06:50:19,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30895 states. [2020-10-29 06:50:20,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30895 to 29273. [2020-10-29 06:50:20,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29273 states. [2020-10-29 06:50:20,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29273 states to 29273 states and 34828 transitions. [2020-10-29 06:50:20,415 INFO L78 Accepts]: Start accepts. Automaton has 29273 states and 34828 transitions. Word has length 364 [2020-10-29 06:50:20,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:50:20,416 INFO L481 AbstractCegarLoop]: Abstraction has 29273 states and 34828 transitions. [2020-10-29 06:50:20,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 06:50:20,416 INFO L276 IsEmpty]: Start isEmpty. Operand 29273 states and 34828 transitions. [2020-10-29 06:50:20,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2020-10-29 06:50:20,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:50:20,437 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:50:20,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 06:50:20,437 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:50:20,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:50:20,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1424140499, now seen corresponding path program 1 times [2020-10-29 06:50:20,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:50:20,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414467607] [2020-10-29 06:50:20,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:50:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:20,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:20,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:20,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:25,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:25,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 467 [2020-10-29 06:50:25,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:50:25,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-29 06:50:25,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:25,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:25,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:50:25,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 304 [2020-10-29 06:50:25,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:50:25,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:25,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:50:25,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:25,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:25,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:25,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:50:25,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:25,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:50:25,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:25,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:25,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:50:25,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:25,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:50:25,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:25,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:50:25,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:25,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:25,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:25,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:50:25,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:25,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 06:50:25,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:25,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:25,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:50:25,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:25,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:50:25,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:25,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:50:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:25,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:25,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:25,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 06:50:25,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:25,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 06:50:25,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:25,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:25,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:50:25,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:25,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:50:25,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:25,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-29 06:50:25,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:25,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:26,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:26,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 06:50:26,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:26,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 06:50:26,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:26,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:26,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:50:26,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:26,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 06:50:26,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:26,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-29 06:50:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:26,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:26,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:26,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:50:26,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:26,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-29 06:50:26,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:26,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:26,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:50:26,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:50:26,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:50:26,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:26,451 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 482 proven. 2 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2020-10-29 06:50:26,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414467607] [2020-10-29 06:50:26,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:50:26,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:50:26,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824736190] [2020-10-29 06:50:26,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:50:26,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:50:26,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:50:26,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:50:26,455 INFO L87 Difference]: Start difference. First operand 29273 states and 34828 transitions. Second operand 7 states. [2020-10-29 06:50:29,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:50:29,994 INFO L93 Difference]: Finished difference Result 59818 states and 71105 transitions. [2020-10-29 06:50:29,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:50:29,996 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 449 [2020-10-29 06:50:29,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:50:30,050 INFO L225 Difference]: With dead ends: 59818 [2020-10-29 06:50:30,051 INFO L226 Difference]: Without dead ends: 29011 [2020-10-29 06:50:30,085 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 06:50:30,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29011 states. [2020-10-29 06:50:30,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29011 to 24409. [2020-10-29 06:50:30,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24409 states. [2020-10-29 06:50:30,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24409 states to 24409 states and 28310 transitions. [2020-10-29 06:50:30,570 INFO L78 Accepts]: Start accepts. Automaton has 24409 states and 28310 transitions. Word has length 449 [2020-10-29 06:50:30,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:50:30,571 INFO L481 AbstractCegarLoop]: Abstraction has 24409 states and 28310 transitions. [2020-10-29 06:50:30,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:50:30,571 INFO L276 IsEmpty]: Start isEmpty. Operand 24409 states and 28310 transitions. [2020-10-29 06:50:30,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2020-10-29 06:50:30,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:50:30,593 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2020-10-29 06:50:30,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 06:50:30,594 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:50:30,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:50:30,594 INFO L82 PathProgramCache]: Analyzing trace with hash 423253911, now seen corresponding path program 1 times [2020-10-29 06:50:30,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:50:30,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319857019] [2020-10-29 06:50:30,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:50:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:30,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:31,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:31,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:32,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:32,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 501 [2020-10-29 06:50:32,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:50:32,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1719 [2020-10-29 06:50:32,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:32,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:32,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:50:32,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-29 06:50:32,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-29 06:50:32,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:32,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:50:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:32,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:32,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:32,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:50:32,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:32,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:50:32,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:32,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:32,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:50:32,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:32,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:50:32,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:32,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:50:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:32,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:32,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:32,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:50:32,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:32,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 06:50:32,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:32,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:32,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:50:32,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:32,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:50:32,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:32,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:50:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:32,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:32,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:32,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-29 06:50:32,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:32,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-29 06:50:32,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:32,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:32,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:50:32,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:50:32,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-29 06:50:32,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:32,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-10-29 06:50:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:33,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:33,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:33,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-29 06:50:33,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:33,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 06:50:33,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:33,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:33,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:50:33,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-29 06:50:33,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:50:33,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:33,439 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 288 proven. 140 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-10-29 06:50:33,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319857019] [2020-10-29 06:50:33,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:50:33,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:50:33,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626336070] [2020-10-29 06:50:33,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:50:33,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:50:33,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:50:33,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:50:33,442 INFO L87 Difference]: Start difference. First operand 24409 states and 28310 transitions. Second operand 7 states. [2020-10-29 06:50:36,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:50:36,749 INFO L93 Difference]: Finished difference Result 46936 states and 54669 transitions. [2020-10-29 06:50:36,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:50:36,750 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 485 [2020-10-29 06:50:36,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:50:36,790 INFO L225 Difference]: With dead ends: 46936 [2020-10-29 06:50:36,791 INFO L226 Difference]: Without dead ends: 23293 [2020-10-29 06:50:36,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:50:36,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23293 states. [2020-10-29 06:50:37,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23293 to 23023. [2020-10-29 06:50:37,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23023 states. [2020-10-29 06:50:37,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23023 states to 23023 states and 26459 transitions. [2020-10-29 06:50:37,205 INFO L78 Accepts]: Start accepts. Automaton has 23023 states and 26459 transitions. Word has length 485 [2020-10-29 06:50:37,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:50:37,205 INFO L481 AbstractCegarLoop]: Abstraction has 23023 states and 26459 transitions. [2020-10-29 06:50:37,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:50:37,205 INFO L276 IsEmpty]: Start isEmpty. Operand 23023 states and 26459 transitions. [2020-10-29 06:50:37,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2020-10-29 06:50:37,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:50:37,222 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 06:50:37,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 06:50:37,223 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:50:37,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:50:37,223 INFO L82 PathProgramCache]: Analyzing trace with hash 447967689, now seen corresponding path program 1 times [2020-10-29 06:50:37,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:50:37,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608771021] [2020-10-29 06:50:37,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:50:37,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:37,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:37,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:37,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:37,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:38,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:38,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:38,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:39,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:39,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 512 [2020-10-29 06:50:39,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 06:50:39,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1914 [2020-10-29 06:50:39,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:39,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:39,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:50:39,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:50:39,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-10-29 06:50:39,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:39,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:50:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:39,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:39,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:39,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:50:39,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:39,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:50:39,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:39,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:39,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:50:39,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:39,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:50:39,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:39,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:50:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:39,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:39,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:39,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:39,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:50:39,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:50:39,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-29 06:50:39,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:39,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:39,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:50:39,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:39,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 06:50:39,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:39,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:50:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:39,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:39,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:39,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:39,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 06:50:39,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:50:39,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-29 06:50:39,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:39,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:39,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:50:39,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-29 06:50:39,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 06:50:39,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:39,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-29 06:50:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:39,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:39,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:39,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-29 06:50:39,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:39,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 06:50:39,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:39,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:39,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:50:39,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-29 06:50:39,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:50:39,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:39,989 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2020-10-29 06:50:39,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608771021] [2020-10-29 06:50:39,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:50:39,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:50:39,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582542520] [2020-10-29 06:50:39,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:50:39,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:50:39,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:50:39,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:50:39,992 INFO L87 Difference]: Start difference. First operand 23023 states and 26459 transitions. Second operand 6 states. [2020-10-29 06:50:42,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:50:42,303 INFO L93 Difference]: Finished difference Result 42616 states and 49090 transitions. [2020-10-29 06:50:42,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:50:42,305 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 496 [2020-10-29 06:50:42,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:50:42,342 INFO L225 Difference]: With dead ends: 42616 [2020-10-29 06:50:42,342 INFO L226 Difference]: Without dead ends: 22869 [2020-10-29 06:50:42,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:50:42,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22869 states. [2020-10-29 06:50:42,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22869 to 22813. [2020-10-29 06:50:42,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22813 states. [2020-10-29 06:50:42,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22813 states to 22813 states and 26197 transitions. [2020-10-29 06:50:42,764 INFO L78 Accepts]: Start accepts. Automaton has 22813 states and 26197 transitions. Word has length 496 [2020-10-29 06:50:42,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:50:42,764 INFO L481 AbstractCegarLoop]: Abstraction has 22813 states and 26197 transitions. [2020-10-29 06:50:42,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:50:42,764 INFO L276 IsEmpty]: Start isEmpty. Operand 22813 states and 26197 transitions. [2020-10-29 06:50:42,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2020-10-29 06:50:42,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:50:42,792 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 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 06:50:42,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 06:50:42,793 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:50:42,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:50:42,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1594750532, now seen corresponding path program 1 times [2020-10-29 06:50:42,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:50:42,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898902104] [2020-10-29 06:50:42,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:50:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:43,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:43,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:43,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:46,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:47,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:47,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 531 [2020-10-29 06:50:47,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:50:47,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-29 06:50:47,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:47,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:47,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 06:50:47,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:50:47,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 522 [2020-10-29 06:50:47,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:48,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:50:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:48,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:48,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:48,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:50:48,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:48,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 06:50:48,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:48,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:48,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:50:48,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:48,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:50:48,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:48,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:50:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:48,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:48,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:48,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:50:48,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:48,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-29 06:50:48,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:48,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:48,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:50:48,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:50:48,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 06:50:48,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:48,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:50:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:48,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:48,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:48,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 06:50:48,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:48,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-29 06:50:48,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:48,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:48,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:50:48,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:50:48,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:50:48,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:48,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-29 06:50:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:48,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:48,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:48,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:50:48,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:48,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-29 06:50:48,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:48,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:48,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:50:48,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:50:48,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 06:50:48,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:49,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-10-29 06:50:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:49,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:49,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:49,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 06:50:49,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:49,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 06:50:49,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:49,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:49,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:50:49,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:50:49,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 06:50:49,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:49,665 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 327 proven. 497 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-29 06:50:49,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898902104] [2020-10-29 06:50:49,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:50:49,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 06:50:49,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331325266] [2020-10-29 06:50:49,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 06:50:49,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:50:49,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 06:50:49,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-29 06:50:49,668 INFO L87 Difference]: Start difference. First operand 22813 states and 26197 transitions. Second operand 13 states. [2020-10-29 06:50:55,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:50:55,776 INFO L93 Difference]: Finished difference Result 52978 states and 61285 transitions. [2020-10-29 06:50:55,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 06:50:55,777 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 513 [2020-10-29 06:50:55,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:50:55,844 INFO L225 Difference]: With dead ends: 52978 [2020-10-29 06:50:55,844 INFO L226 Difference]: Without dead ends: 33057 [2020-10-29 06:50:55,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2020-10-29 06:50:55,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33057 states. [2020-10-29 06:50:56,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33057 to 31300. [2020-10-29 06:50:56,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31300 states. [2020-10-29 06:50:56,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31300 states to 31300 states and 35841 transitions. [2020-10-29 06:50:56,378 INFO L78 Accepts]: Start accepts. Automaton has 31300 states and 35841 transitions. Word has length 513 [2020-10-29 06:50:56,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:50:56,378 INFO L481 AbstractCegarLoop]: Abstraction has 31300 states and 35841 transitions. [2020-10-29 06:50:56,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 06:50:56,378 INFO L276 IsEmpty]: Start isEmpty. Operand 31300 states and 35841 transitions. [2020-10-29 06:50:56,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2020-10-29 06:50:56,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:50:56,407 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 06:50:56,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 06:50:56,407 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:50:56,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:50:56,408 INFO L82 PathProgramCache]: Analyzing trace with hash -723405765, now seen corresponding path program 1 times [2020-10-29 06:50:56,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:50:56,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047977645] [2020-10-29 06:50:56,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:50:56,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:56,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:57,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:57,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:57,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 528 [2020-10-29 06:50:57,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:50:57,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 930 [2020-10-29 06:50:57,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:57,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:57,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:50:57,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 461 [2020-10-29 06:50:57,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 06:50:57,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:57,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:50:57,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:57,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:57,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:57,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:50:57,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:57,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:50:57,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:57,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:57,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:50:57,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:57,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:50:57,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:57,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:50:57,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:57,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:57,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:57,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:50:57,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:57,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 06:50:57,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:57,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:57,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:50:57,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:57,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:50:57,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:57,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:50:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:57,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:57,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:57,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-29 06:50:57,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:57,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 06:50:57,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:57,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:57,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:50:57,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:57,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:50:57,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:57,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-29 06:50:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:57,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:57,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:57,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-29 06:50:57,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:57,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-29 06:50:57,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:57,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:57,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:50:57,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:57,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-29 06:50:57,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:58,258 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 174 proven. 3 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2020-10-29 06:50:58,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047977645] [2020-10-29 06:50:58,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:50:58,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:50:58,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376573435] [2020-10-29 06:50:58,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:50:58,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:50:58,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:50:58,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:50:58,260 INFO L87 Difference]: Start difference. First operand 31300 states and 35841 transitions. Second operand 5 states. [2020-10-29 06:51:00,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:00,906 INFO L93 Difference]: Finished difference Result 32145 states and 36734 transitions. [2020-10-29 06:51:00,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:51:00,907 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 512 [2020-10-29 06:51:00,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:00,959 INFO L225 Difference]: With dead ends: 32145 [2020-10-29 06:51:00,959 INFO L226 Difference]: Without dead ends: 31948 [2020-10-29 06:51:00,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:51:00,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31948 states. [2020-10-29 06:51:01,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31948 to 31680. [2020-10-29 06:51:01,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31680 states. [2020-10-29 06:51:01,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31680 states to 31680 states and 36210 transitions. [2020-10-29 06:51:01,438 INFO L78 Accepts]: Start accepts. Automaton has 31680 states and 36210 transitions. Word has length 512 [2020-10-29 06:51:01,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:01,438 INFO L481 AbstractCegarLoop]: Abstraction has 31680 states and 36210 transitions. [2020-10-29 06:51:01,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:51:01,438 INFO L276 IsEmpty]: Start isEmpty. Operand 31680 states and 36210 transitions. [2020-10-29 06:51:01,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2020-10-29 06:51:01,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:01,471 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:51:01,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 06:51:01,472 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:01,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:01,472 INFO L82 PathProgramCache]: Analyzing trace with hash 587432116, now seen corresponding path program 1 times [2020-10-29 06:51:01,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:01,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574513655] [2020-10-29 06:51:01,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:01,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:01,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:01,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:04,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:06,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:06,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 562 [2020-10-29 06:51:06,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:51:06,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 06:51:06,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:06,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:06,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 06:51:06,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:51:06,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 553 [2020-10-29 06:51:06,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:06,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:06,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:06,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:06,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:06,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:06,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:06,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:51:06,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:06,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:06,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:06,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:06,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:51:06,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:06,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:06,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:06,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:06,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:06,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:51:06,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:06,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-29 06:51:06,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:06,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:06,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:06,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:06,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 06:51:06,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:07,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:51:07,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:07,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:07,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:07,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 06:51:07,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:07,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-29 06:51:07,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:07,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:07,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:51:07,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:07,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:51:07,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:07,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-29 06:51:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:07,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:07,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:07,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 06:51:07,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:07,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-29 06:51:07,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:07,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:07,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:07,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:07,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-29 06:51:07,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:07,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-29 06:51:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:07,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:08,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:08,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:51:08,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:08,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-29 06:51:08,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:08,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:08,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:51:08,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:08,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:51:08,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:09,083 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 87 proven. 659 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-29 06:51:09,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574513655] [2020-10-29 06:51:09,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:51:09,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 06:51:09,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036282128] [2020-10-29 06:51:09,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 06:51:09,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:09,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 06:51:09,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:51:09,085 INFO L87 Difference]: Start difference. First operand 31680 states and 36210 transitions. Second operand 12 states. [2020-10-29 06:51:10,407 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2020-10-29 06:51:11,162 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-10-29 06:51:13,267 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-29 06:51:17,316 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-29 06:51:19,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:19,241 INFO L93 Difference]: Finished difference Result 69254 states and 79590 transitions. [2020-10-29 06:51:19,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 06:51:19,244 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 544 [2020-10-29 06:51:19,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:19,340 INFO L225 Difference]: With dead ends: 69254 [2020-10-29 06:51:19,340 INFO L226 Difference]: Without dead ends: 36800 [2020-10-29 06:51:19,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=248, Invalid=808, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 06:51:19,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36800 states. [2020-10-29 06:51:19,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36800 to 35324. [2020-10-29 06:51:19,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35324 states. [2020-10-29 06:51:19,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35324 states to 35324 states and 40273 transitions. [2020-10-29 06:51:19,876 INFO L78 Accepts]: Start accepts. Automaton has 35324 states and 40273 transitions. Word has length 544 [2020-10-29 06:51:19,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:19,877 INFO L481 AbstractCegarLoop]: Abstraction has 35324 states and 40273 transitions. [2020-10-29 06:51:19,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 06:51:19,877 INFO L276 IsEmpty]: Start isEmpty. Operand 35324 states and 40273 transitions. [2020-10-29 06:51:19,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2020-10-29 06:51:19,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:19,906 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:51:19,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 06:51:19,906 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:19,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:19,907 INFO L82 PathProgramCache]: Analyzing trace with hash -2014029135, now seen corresponding path program 1 times [2020-10-29 06:51:19,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:19,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507391249] [2020-10-29 06:51:19,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:19,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:20,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:20,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:20,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:24,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:25,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:25,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 576 [2020-10-29 06:51:25,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:51:25,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-29 06:51:25,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:25,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:25,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 06:51:25,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:51:25,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 567 [2020-10-29 06:51:25,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:25,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:25,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:25,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:25,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:25,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:25,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:25,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 06:51:25,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:25,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:25,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:25,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:25,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:51:25,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:25,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:25,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:25,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:25,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:51:25,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:25,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-29 06:51:25,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:25,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:25,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:51:25,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:25,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 06:51:25,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:25,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:51:25,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:25,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:26,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:26,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-29 06:51:26,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:26,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 571 [2020-10-29 06:51:26,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:26,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:26,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:51:26,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:26,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-29 06:51:26,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:51:26,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-10-29 06:51:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:26,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:26,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:26,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 06:51:26,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:26,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-29 06:51:26,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:26,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:26,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:51:26,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:26,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 06:51:26,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:26,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-29 06:51:26,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:26,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:26,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:26,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 06:51:26,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:26,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-29 06:51:26,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:26,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:26,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:26,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:26,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 06:51:26,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:27,310 INFO L134 CoverageAnalysis]: Checked inductivity of 803 backedges. 12 proven. 248 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2020-10-29 06:51:27,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507391249] [2020-10-29 06:51:27,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:51:27,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 06:51:27,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769611144] [2020-10-29 06:51:27,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 06:51:27,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:27,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 06:51:27,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:51:27,312 INFO L87 Difference]: Start difference. First operand 35324 states and 40273 transitions. Second operand 12 states. [2020-10-29 06:51:35,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:35,006 INFO L93 Difference]: Finished difference Result 81074 states and 93017 transitions. [2020-10-29 06:51:35,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 06:51:35,007 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 558 [2020-10-29 06:51:35,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:35,109 INFO L225 Difference]: With dead ends: 81074 [2020-10-29 06:51:35,109 INFO L226 Difference]: Without dead ends: 49809 [2020-10-29 06:51:35,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2020-10-29 06:51:35,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49809 states. [2020-10-29 06:51:35,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49809 to 46884. [2020-10-29 06:51:35,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46884 states. [2020-10-29 06:51:35,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46884 states to 46884 states and 53329 transitions. [2020-10-29 06:51:35,837 INFO L78 Accepts]: Start accepts. Automaton has 46884 states and 53329 transitions. Word has length 558 [2020-10-29 06:51:35,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:35,838 INFO L481 AbstractCegarLoop]: Abstraction has 46884 states and 53329 transitions. [2020-10-29 06:51:35,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 06:51:35,838 INFO L276 IsEmpty]: Start isEmpty. Operand 46884 states and 53329 transitions. [2020-10-29 06:51:35,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2020-10-29 06:51:35,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:35,869 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:51:35,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 06:51:35,869 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:35,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:35,870 INFO L82 PathProgramCache]: Analyzing trace with hash -165820902, now seen corresponding path program 1 times [2020-10-29 06:51:35,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:35,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440311745] [2020-10-29 06:51:35,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:36,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking...