/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-tiling/mbpr4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:27:54,176 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:27:54,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:27:54,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:27:54,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:27:54,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:27:54,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:27:54,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:27:54,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:27:54,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:27:54,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:27:54,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:27:54,271 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:27:54,274 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:27:54,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:27:54,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:27:54,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:27:54,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:27:54,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:27:54,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:27:54,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:27:54,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:27:54,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:27:54,309 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:27:54,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:27:54,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:27:54,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:27:54,332 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:27:54,333 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:27:54,334 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:27:54,334 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:27:54,335 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:27:54,337 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:27:54,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:27:54,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:27:54,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:27:54,341 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:27:54,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:27:54,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:27:54,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:27:54,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:27:54,351 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 09:27:54,402 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:27:54,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:27:54,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:27:54,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:27:54,407 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:27:54,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:27:54,408 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:27:54,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:27:54,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:27:54,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:27:54,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:27:54,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:27:54,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:27:54,410 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:27:54,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:27:54,410 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:27:54,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:27:54,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:27:54,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:27:54,411 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:27:54,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:27:54,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:27:54,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:27:54,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:27:54,413 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:27:54,413 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:27:54,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:27:54,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:27:54,413 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:27:54,414 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:27:54,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:27:54,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:27:54,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:27:54,898 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:27:54,899 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:27:54,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/mbpr4.c [2020-10-28 09:27:54,970 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ae49c518/e56923ee62fe481ba7d2496b0690bc3f/FLAG08e1a2e4d [2020-10-28 09:27:55,722 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:27:55,724 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/mbpr4.c [2020-10-28 09:27:55,734 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ae49c518/e56923ee62fe481ba7d2496b0690bc3f/FLAG08e1a2e4d [2020-10-28 09:27:56,056 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ae49c518/e56923ee62fe481ba7d2496b0690bc3f [2020-10-28 09:27:56,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:27:56,067 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:27:56,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:27:56,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:27:56,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:27:56,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:27:56" (1/1) ... [2020-10-28 09:27:56,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6372ebc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:56, skipping insertion in model container [2020-10-28 09:27:56,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:27:56" (1/1) ... [2020-10-28 09:27:56,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:27:56,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:27:56,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:27:56,307 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:27:56,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:27:56,366 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:27:56,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:56 WrapperNode [2020-10-28 09:27:56,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:27:56,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:27:56,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:27:56,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:27:56,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:56" (1/1) ... [2020-10-28 09:27:56,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:56" (1/1) ... [2020-10-28 09:27:56,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:56" (1/1) ... [2020-10-28 09:27:56,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:56" (1/1) ... [2020-10-28 09:27:56,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:56" (1/1) ... [2020-10-28 09:27:56,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:56" (1/1) ... [2020-10-28 09:27:56,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:56" (1/1) ... [2020-10-28 09:27:56,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:27:56,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:27:56,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:27:56,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:27:56,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:27:56,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:27:56,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:27:56,546 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:27:56,546 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 09:27:56,547 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:27:56,547 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:27:56,547 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:27:56,547 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:27:56,548 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:27:56,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:27:56,549 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 09:27:56,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:27:56,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 09:27:56,550 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:27:56,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:27:56,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:27:56,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:27:56,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:27:56,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:27:56,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:27:57,206 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:27:57,206 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-28 09:27:57,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:27:57 BoogieIcfgContainer [2020-10-28 09:27:57,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:27:57,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:27:57,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:27:57,215 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:27:57,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:27:56" (1/3) ... [2020-10-28 09:27:57,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2eca4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:27:57, skipping insertion in model container [2020-10-28 09:27:57,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:56" (2/3) ... [2020-10-28 09:27:57,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2eca4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:27:57, skipping insertion in model container [2020-10-28 09:27:57,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:27:57" (3/3) ... [2020-10-28 09:27:57,219 INFO L111 eAbstractionObserver]: Analyzing ICFG mbpr4.c [2020-10-28 09:27:57,233 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:27:57,240 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:27:57,256 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:27:57,287 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:27:57,288 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:27:57,288 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:27:57,288 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:27:57,288 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:27:57,289 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:27:57,289 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:27:57,289 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:27:57,308 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-10-28 09:27:57,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-28 09:27:57,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:27:57,317 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] [2020-10-28 09:27:57,317 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:27:57,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:27:57,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1384398134, now seen corresponding path program 1 times [2020-10-28 09:27:57,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:27:57,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215383191] [2020-10-28 09:27:57,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:27:57,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:57,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:57,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:57,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:57,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:57,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:57,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:58,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:58,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 09:27:58,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:27:58,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 869 [2020-10-28 09:27:58,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:58,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:58,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:58,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 09:27:58,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:58,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 09:27:58,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:27:58,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:58,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:58,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:58,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:27:58,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:58,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 09:27:58,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:58,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:58,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:58,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:27:58,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:58,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:27:58,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 09:27:58,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:58,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:58,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:58,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:58,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:27:58,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:27:58,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:27:58,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:58,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:58,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:58,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:27:58,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:58,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:27:58,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:27:58,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215383191] [2020-10-28 09:27:58,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:27:58,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 09:27:58,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308582001] [2020-10-28 09:27:58,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 09:27:58,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:27:58,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 09:27:58,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:27:58,546 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 3 states. [2020-10-28 09:27:58,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:27:58,760 INFO L93 Difference]: Finished difference Result 96 states and 131 transitions. [2020-10-28 09:27:58,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 09:27:58,762 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-10-28 09:27:58,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:27:58,770 INFO L225 Difference]: With dead ends: 96 [2020-10-28 09:27:58,770 INFO L226 Difference]: Without dead ends: 46 [2020-10-28 09:27:58,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:27:58,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-28 09:27:58,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-10-28 09:27:58,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-28 09:27:58,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2020-10-28 09:27:58,821 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 29 [2020-10-28 09:27:58,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:27:58,822 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2020-10-28 09:27:58,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 09:27:58,822 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2020-10-28 09:27:58,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-28 09:27:58,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:27:58,824 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] [2020-10-28 09:27:58,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:27:58,824 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:27:58,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:27:58,825 INFO L82 PathProgramCache]: Analyzing trace with hash -2064771688, now seen corresponding path program 1 times [2020-10-28 09:27:58,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:27:58,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632172168] [2020-10-28 09:27:58,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:27:58,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:58,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:58,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:58,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:58,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:59,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:59,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:59,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:59,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:59,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:59,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:00,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:00,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:00,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:00,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:00,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:00,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:00,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:03,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:03,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 09:28:03,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-28 09:28:03,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 09:28:03,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:03,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:03,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 09:28:03,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 09:28:03,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 09:28:03,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:28:04,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:28:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:04,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:04,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:04,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:28:04,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:04,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:28:04,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:04,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:04,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:28:04,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:28:04,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:28:04,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:28:04,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 09:28:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:04,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:04,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:04,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:04,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:28:04,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:28:04,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 09:28:04,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:04,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:04,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:28:04,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:28:04,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:28:04,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:28:04,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:28:04,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632172168] [2020-10-28 09:28:04,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:28:04,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 09:28:04,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361810145] [2020-10-28 09:28:04,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 09:28:04,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:28:04,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 09:28:04,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:28:04,045 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand 7 states. [2020-10-28 09:28:04,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:28:04,668 INFO L93 Difference]: Finished difference Result 102 states and 131 transitions. [2020-10-28 09:28:04,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 09:28:04,669 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-10-28 09:28:04,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:28:04,672 INFO L225 Difference]: With dead ends: 102 [2020-10-28 09:28:04,673 INFO L226 Difference]: Without dead ends: 67 [2020-10-28 09:28:04,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:28:04,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-28 09:28:04,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 50. [2020-10-28 09:28:04,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-28 09:28:04,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2020-10-28 09:28:04,692 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 29 [2020-10-28 09:28:04,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:28:04,692 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2020-10-28 09:28:04,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 09:28:04,692 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2020-10-28 09:28:04,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-28 09:28:04,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:28:04,694 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] [2020-10-28 09:28:04,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:28:04,695 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:28:04,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:28:04,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1938650752, now seen corresponding path program 1 times [2020-10-28 09:28:04,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:28:04,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270195231] [2020-10-28 09:28:04,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:28:04,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:04,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:04,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:05,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:05,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 09:28:05,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:28:05,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421 [2020-10-28 09:28:05,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:05,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:05,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:28:05,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:28:05,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 09:28:05,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:28:05,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:28:05,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:05,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:05,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:05,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:28:05,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:05,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:28:05,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:05,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:05,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:28:05,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:28:05,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:28:05,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:28:05,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 09:28:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:05,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:05,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:05,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:28:05,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:05,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:28:05,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:05,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:05,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:28:05,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:28:05,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:28:05,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:28:05,289 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 09:28:05,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270195231] [2020-10-28 09:28:05,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:28:05,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:28:05,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217798836] [2020-10-28 09:28:05,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:28:05,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:28:05,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:28:05,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:28:05,307 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand 4 states. [2020-10-28 09:28:05,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:28:05,546 INFO L93 Difference]: Finished difference Result 85 states and 103 transitions. [2020-10-28 09:28:05,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:28:05,547 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-28 09:28:05,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:28:05,548 INFO L225 Difference]: With dead ends: 85 [2020-10-28 09:28:05,550 INFO L226 Difference]: Without dead ends: 50 [2020-10-28 09:28:05,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:28:05,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-28 09:28:05,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-28 09:28:05,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-28 09:28:05,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-10-28 09:28:05,569 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 45 [2020-10-28 09:28:05,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:28:05,571 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-10-28 09:28:05,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:28:05,571 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-10-28 09:28:05,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-28 09:28:05,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:28:05,576 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] [2020-10-28 09:28:05,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 09:28:05,577 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:28:05,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:28:05,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1961283006, now seen corresponding path program 1 times [2020-10-28 09:28:05,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:28:05,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434009598] [2020-10-28 09:28:05,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:28:05,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:05,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:05,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:06,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:06,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:06,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:06,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:06,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:07,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:07,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:07,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:08,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:09,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:09,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:09,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:10,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:10,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:10,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:10,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:10,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 09:28:10,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-28 09:28:10,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 09:28:10,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:10,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:10,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:28:10,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 09:28:10,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:28:10,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:28:10,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:28:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:10,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:10,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:10,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:28:10,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:10,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:28:10,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:10,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:10,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:28:10,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:28:10,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:28:10,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:28:10,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 09:28:10,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:10,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:10,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:10,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:28:10,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:10,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:28:10,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:10,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:10,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:28:10,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:28:10,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:28:10,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:10,743 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 09:28:10,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434009598] [2020-10-28 09:28:10,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:28:10,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 09:28:10,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979344169] [2020-10-28 09:28:10,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 09:28:10,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:28:10,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 09:28:10,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:28:10,746 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 6 states. [2020-10-28 09:28:11,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:28:11,024 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2020-10-28 09:28:11,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:28:11,025 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-10-28 09:28:11,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:28:11,026 INFO L225 Difference]: With dead ends: 59 [2020-10-28 09:28:11,026 INFO L226 Difference]: Without dead ends: 56 [2020-10-28 09:28:11,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:28:11,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-28 09:28:11,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-28 09:28:11,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-28 09:28:11,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2020-10-28 09:28:11,038 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 45 [2020-10-28 09:28:11,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:28:11,039 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2020-10-28 09:28:11,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 09:28:11,039 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2020-10-28 09:28:11,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-28 09:28:11,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:28:11,040 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] [2020-10-28 09:28:11,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 09:28:11,041 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:28:11,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:28:11,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1904024704, now seen corresponding path program 1 times [2020-10-28 09:28:11,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:28:11,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394855873] [2020-10-28 09:28:11,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:28:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:11,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:11,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:11,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:11,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:11,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:12,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:12,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:12,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:13,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:13,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:14,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:16,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:16,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 09:28:16,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 09:28:16,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 09:28:16,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:16,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:16,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 09:28:16,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 09:28:16,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 09:28:16,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:28:17,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:28:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:17,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:17,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:17,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:28:17,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:17,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:28:17,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:17,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:17,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:28:17,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:28:17,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:28:17,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:28:17,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 09:28:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:17,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:17,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:17,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:17,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:28:17,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:28:17,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 09:28:17,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:17,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:17,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:28:17,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:28:17,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:28:17,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:28:17,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 09:28:17,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394855873] [2020-10-28 09:28:17,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:28:17,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 09:28:17,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522131181] [2020-10-28 09:28:17,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 09:28:17,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:28:17,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 09:28:17,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:28:17,138 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand 13 states. [2020-10-28 09:28:19,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:28:19,436 INFO L93 Difference]: Finished difference Result 133 states and 165 transitions. [2020-10-28 09:28:19,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-28 09:28:19,437 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 45 [2020-10-28 09:28:19,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:28:19,440 INFO L225 Difference]: With dead ends: 133 [2020-10-28 09:28:19,440 INFO L226 Difference]: Without dead ends: 116 [2020-10-28 09:28:19,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 8 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=262, Invalid=730, Unknown=0, NotChecked=0, Total=992 [2020-10-28 09:28:19,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-28 09:28:19,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 82. [2020-10-28 09:28:19,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-28 09:28:19,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2020-10-28 09:28:19,465 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 45 [2020-10-28 09:28:19,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:28:19,466 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2020-10-28 09:28:19,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 09:28:19,466 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2020-10-28 09:28:19,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-28 09:28:19,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:28:19,468 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 09:28:19,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 09:28:19,468 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:28:19,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:28:19,469 INFO L82 PathProgramCache]: Analyzing trace with hash 739534863, now seen corresponding path program 1 times [2020-10-28 09:28:19,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:28:19,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [963354612] [2020-10-28 09:28:19,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:28:19,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:19,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:19,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:19,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:19,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:20,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:20,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:20,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:21,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:21,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:21,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:21,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:22,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:24,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:24,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 09:28:24,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 09:28:24,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 09:28:24,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:24,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:24,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 09:28:24,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 09:28:24,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 09:28:24,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:28:25,316 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 33 [2020-10-28 09:28:25,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:28:25,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:25,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:25,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:25,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:28:25,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:25,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:28:25,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:25,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:25,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:28:25,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:28:25,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:28:25,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:28:25,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 09:28:25,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:25,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:25,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:25,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:25,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:28:25,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:28:25,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 09:28:25,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:25,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:25,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:28:25,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:28:25,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:28:25,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:28:25,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 09:28:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:25,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:25,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:25,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:28:25,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:25,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:28:25,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:25,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:25,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:28:25,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:28:25,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:28:25,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:25,936 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 09:28:25,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [963354612] [2020-10-28 09:28:25,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:28:25,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 09:28:25,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036088211] [2020-10-28 09:28:25,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 09:28:25,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:28:25,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 09:28:25,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:28:25,940 INFO L87 Difference]: Start difference. First operand 82 states and 100 transitions. Second operand 15 states. [2020-10-28 09:28:28,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:28:28,947 INFO L93 Difference]: Finished difference Result 200 states and 255 transitions. [2020-10-28 09:28:28,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-28 09:28:28,948 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2020-10-28 09:28:28,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:28:28,952 INFO L225 Difference]: With dead ends: 200 [2020-10-28 09:28:28,952 INFO L226 Difference]: Without dead ends: 183 [2020-10-28 09:28:28,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=354, Invalid=1128, Unknown=0, NotChecked=0, Total=1482 [2020-10-28 09:28:28,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-28 09:28:29,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 132. [2020-10-28 09:28:29,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-28 09:28:29,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 167 transitions. [2020-10-28 09:28:29,009 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 167 transitions. Word has length 54 [2020-10-28 09:28:29,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:28:29,009 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 167 transitions. [2020-10-28 09:28:29,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 09:28:29,009 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 167 transitions. [2020-10-28 09:28:29,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-28 09:28:29,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:28:29,012 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 09:28:29,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 09:28:29,013 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:28:29,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:28:29,013 INFO L82 PathProgramCache]: Analyzing trace with hash 667148305, now seen corresponding path program 1 times [2020-10-28 09:28:29,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:28:29,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536363195] [2020-10-28 09:28:29,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:28:29,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:29,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:29,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:29,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:29,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:29,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:29,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:29,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:29,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:30,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:32,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:32,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:32,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:32,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:34,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:34,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 09:28:34,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 09:28:34,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 09:28:34,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:34,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:34,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:28:34,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:28:34,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 09:28:34,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:34,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:28:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:34,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:34,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:34,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:28:34,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:34,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:28:34,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:34,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:34,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:28:34,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:28:34,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:28:34,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:28:34,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 09:28:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:34,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:34,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:34,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:28:34,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:34,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:28:34,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:34,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:34,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:28:34,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:28:34,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:28:34,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:34,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 09:28:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:34,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:34,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:34,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:28:34,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:34,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:28:34,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:34,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:34,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:28:34,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:28:34,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:28:34,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:34,133 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 09:28:34,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536363195] [2020-10-28 09:28:34,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:28:34,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:28:34,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464836444] [2020-10-28 09:28:34,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:28:34,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:28:34,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:28:34,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:28:34,139 INFO L87 Difference]: Start difference. First operand 132 states and 167 transitions. Second operand 4 states. [2020-10-28 09:28:34,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:28:34,278 INFO L93 Difference]: Finished difference Result 193 states and 244 transitions. [2020-10-28 09:28:34,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:28:34,279 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-10-28 09:28:34,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:28:34,284 INFO L225 Difference]: With dead ends: 193 [2020-10-28 09:28:34,284 INFO L226 Difference]: Without dead ends: 102 [2020-10-28 09:28:34,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:28:34,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-28 09:28:34,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-10-28 09:28:34,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-28 09:28:34,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 125 transitions. [2020-10-28 09:28:34,323 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 125 transitions. Word has length 54 [2020-10-28 09:28:34,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:28:34,323 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 125 transitions. [2020-10-28 09:28:34,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:28:34,324 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 125 transitions. [2020-10-28 09:28:34,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 09:28:34,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:28:34,327 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 09:28:34,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 09:28:34,328 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:28:34,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:28:34,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1347120751, now seen corresponding path program 2 times [2020-10-28 09:28:34,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:28:34,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785264339] [2020-10-28 09:28:34,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:28:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:34,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:34,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:34,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:34,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:39,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:39,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 09:28:39,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:28:39,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 09:28:39,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:39,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:39,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 09:28:39,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 09:28:39,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 09:28:39,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:39,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:28:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:39,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:39,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:39,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:28:39,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:39,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:28:39,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:39,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:39,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:28:39,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:28:39,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:28:39,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:39,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 09:28:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:39,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:39,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:39,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:28:39,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:39,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:28:39,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:39,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:39,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:28:39,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:28:39,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:28:39,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:39,614 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-28 09:28:39,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785264339] [2020-10-28 09:28:39,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:28:39,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 09:28:39,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509842741] [2020-10-28 09:28:39,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 09:28:39,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:28:39,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 09:28:39,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:28:39,617 INFO L87 Difference]: Start difference. First operand 102 states and 125 transitions. Second operand 8 states. [2020-10-28 09:28:40,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:28:40,304 INFO L93 Difference]: Finished difference Result 212 states and 260 transitions. [2020-10-28 09:28:40,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 09:28:40,305 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-10-28 09:28:40,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:28:40,307 INFO L225 Difference]: With dead ends: 212 [2020-10-28 09:28:40,307 INFO L226 Difference]: Without dead ends: 141 [2020-10-28 09:28:40,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:28:40,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-28 09:28:40,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 111. [2020-10-28 09:28:40,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-28 09:28:40,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 129 transitions. [2020-10-28 09:28:40,330 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 129 transitions. Word has length 57 [2020-10-28 09:28:40,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:28:40,330 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 129 transitions. [2020-10-28 09:28:40,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 09:28:40,331 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 129 transitions. [2020-10-28 09:28:40,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-28 09:28:40,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:28:40,332 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 09:28:40,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 09:28:40,332 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:28:40,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:28:40,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1795320736, now seen corresponding path program 2 times [2020-10-28 09:28:40,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:28:40,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116341981] [2020-10-28 09:28:40,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:28:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:40,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:40,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:40,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:40,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:40,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:40,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:40,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:41,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:41,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:41,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:41,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:44,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:44,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:44,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:45,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:45,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 09:28:45,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 09:28:45,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 09:28:45,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:45,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:45,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 09:28:45,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 09:28:45,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-28 09:28:45,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:46,332 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 30 [2020-10-28 09:28:46,508 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 30 [2020-10-28 09:28:46,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:28:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:46,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:46,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:46,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:28:46,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:46,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:28:46,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:46,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:46,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:28:46,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:28:46,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:28:46,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:46,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 09:28:46,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:46,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:46,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:46,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:46,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:28:46,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:28:46,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:28:46,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:46,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:46,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:28:46,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:28:46,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:28:46,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:46,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 09:28:46,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:46,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:46,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:46,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:28:46,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:46,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:28:46,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:46,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:46,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:28:46,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:28:46,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:28:46,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:46,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 09:28:46,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:46,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:46,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:46,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:28:46,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:46,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:28:46,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:46,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:46,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:28:46,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:28:46,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:28:46,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:46,749 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 09:28:46,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116341981] [2020-10-28 09:28:46,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:28:46,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 09:28:46,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73140058] [2020-10-28 09:28:46,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 09:28:46,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:28:46,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 09:28:46,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:28:46,752 INFO L87 Difference]: Start difference. First operand 111 states and 129 transitions. Second operand 14 states. [2020-10-28 09:28:46,886 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2020-10-28 09:28:47,824 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2020-10-28 09:28:47,988 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2020-10-28 09:28:48,197 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-10-28 09:28:48,463 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2020-10-28 09:28:48,710 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-10-28 09:28:48,944 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-10-28 09:28:49,424 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2020-10-28 09:28:49,697 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2020-10-28 09:28:50,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:28:50,729 INFO L93 Difference]: Finished difference Result 200 states and 237 transitions. [2020-10-28 09:28:50,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-28 09:28:50,730 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 63 [2020-10-28 09:28:50,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:28:50,733 INFO L225 Difference]: With dead ends: 200 [2020-10-28 09:28:50,734 INFO L226 Difference]: Without dead ends: 183 [2020-10-28 09:28:50,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=270, Invalid=1062, Unknown=0, NotChecked=0, Total=1332 [2020-10-28 09:28:50,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-28 09:28:50,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 129. [2020-10-28 09:28:50,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-28 09:28:50,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 150 transitions. [2020-10-28 09:28:50,765 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 150 transitions. Word has length 63 [2020-10-28 09:28:50,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:28:50,765 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 150 transitions. [2020-10-28 09:28:50,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 09:28:50,766 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 150 transitions. [2020-10-28 09:28:50,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-28 09:28:50,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:28:50,768 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 09:28:50,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 09:28:50,768 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:28:50,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:28:50,769 INFO L82 PathProgramCache]: Analyzing trace with hash 2105279774, now seen corresponding path program 1 times [2020-10-28 09:28:50,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:28:50,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775193981] [2020-10-28 09:28:50,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:28:50,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:50,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:50,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:50,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:50,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:51,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:51,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:51,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:51,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:51,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:51,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:52,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:52,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:52,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:55,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:55,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 09:28:55,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 09:28:55,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 09:28:55,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:55,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:55,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:28:55,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:28:55,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 09:28:55,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:55,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:28:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:55,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:55,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:55,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:28:55,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:55,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:28:55,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:55,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:55,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:28:55,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:28:55,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:28:55,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:55,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 09:28:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:55,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:55,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:55,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:28:55,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:55,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:28:55,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:55,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:55,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:28:55,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:28:55,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:28:55,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:55,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 09:28:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:55,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:55,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:55,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:28:55,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:55,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:28:55,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:55,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:55,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:28:55,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:28:55,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:28:55,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:55,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 09:28:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:55,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:55,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:55,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:28:55,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:55,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:28:55,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:55,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:55,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:28:55,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:28:55,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:28:55,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:55,864 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:28:55,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775193981] [2020-10-28 09:28:55,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:28:55,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:28:55,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414643804] [2020-10-28 09:28:55,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:28:55,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:28:55,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:28:55,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:28:55,867 INFO L87 Difference]: Start difference. First operand 129 states and 150 transitions. Second operand 4 states. [2020-10-28 09:28:56,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:28:56,036 INFO L93 Difference]: Finished difference Result 183 states and 214 transitions. [2020-10-28 09:28:56,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:28:56,037 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-10-28 09:28:56,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:28:56,038 INFO L225 Difference]: With dead ends: 183 [2020-10-28 09:28:56,039 INFO L226 Difference]: Without dead ends: 117 [2020-10-28 09:28:56,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:28:56,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-28 09:28:56,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-10-28 09:28:56,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-28 09:28:56,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 133 transitions. [2020-10-28 09:28:56,066 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 133 transitions. Word has length 63 [2020-10-28 09:28:56,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:28:56,066 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 133 transitions. [2020-10-28 09:28:56,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:28:56,066 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 133 transitions. [2020-10-28 09:28:56,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-28 09:28:56,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:28:56,067 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 09:28:56,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 09:28:56,067 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:28:56,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:28:56,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1024858410, now seen corresponding path program 3 times [2020-10-28 09:28:56,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:28:56,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417681473] [2020-10-28 09:28:56,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:28:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:56,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:56,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:57,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:57,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:57,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:58,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:58,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:59,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:59,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:01,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:01,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:01,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 09:29:01,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 09:29:01,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 09:29:01,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:01,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:01,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-28 09:29:01,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 09:29:01,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 09:29:01,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:01,909 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 41 [2020-10-28 09:29:02,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:29:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:02,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:02,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:02,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:29:02,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:02,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:29:02,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:02,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:02,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:02,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:29:02,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:02,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:02,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 09:29:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:02,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:02,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:02,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:02,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:02,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:29:02,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 09:29:02,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:02,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:02,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:29:02,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:29:02,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:29:02,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:03,018 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-28 09:29:03,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417681473] [2020-10-28 09:29:03,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:29:03,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 09:29:03,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332690155] [2020-10-28 09:29:03,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 09:29:03,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:29:03,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 09:29:03,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:29:03,021 INFO L87 Difference]: Start difference. First operand 117 states and 133 transitions. Second operand 16 states. [2020-10-28 09:29:04,196 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 40 [2020-10-28 09:29:04,489 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2020-10-28 09:29:05,039 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2020-10-28 09:29:07,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:29:07,012 INFO L93 Difference]: Finished difference Result 234 states and 279 transitions. [2020-10-28 09:29:07,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-28 09:29:07,013 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 61 [2020-10-28 09:29:07,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:29:07,015 INFO L225 Difference]: With dead ends: 234 [2020-10-28 09:29:07,015 INFO L226 Difference]: Without dead ends: 217 [2020-10-28 09:29:07,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 9 SyntacticMatches, 11 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=304, Invalid=1418, Unknown=0, NotChecked=0, Total=1722 [2020-10-28 09:29:07,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-28 09:29:07,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 152. [2020-10-28 09:29:07,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-28 09:29:07,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 178 transitions. [2020-10-28 09:29:07,043 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 178 transitions. Word has length 61 [2020-10-28 09:29:07,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:29:07,043 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 178 transitions. [2020-10-28 09:29:07,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 09:29:07,043 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 178 transitions. [2020-10-28 09:29:07,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-28 09:29:07,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:29:07,048 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:29:07,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 09:29:07,049 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:29:07,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:29:07,049 INFO L82 PathProgramCache]: Analyzing trace with hash 216183599, now seen corresponding path program 3 times [2020-10-28 09:29:07,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:29:07,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566393780] [2020-10-28 09:29:07,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:29:07,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:07,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:07,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:07,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:07,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:07,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:07,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:07,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:07,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:07,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:08,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:08,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:09,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:09,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:09,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:09,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:09,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:10,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:10,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:10,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:10,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:10,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:10,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:11,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:11,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:11,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:11,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:12,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:12,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 09:29:12,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 26 [2020-10-28 09:29:12,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 09:29:12,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:12,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:12,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 09:29:12,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 09:29:12,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 09:29:12,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:12,465 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2020-10-28 09:29:12,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:29:12,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:12,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:12,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:12,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:29:12,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:12,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:29:12,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:12,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:12,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:12,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:29:12,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:12,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:12,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 09:29:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:12,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:12,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:12,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:12,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:12,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:29:12,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:12,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:12,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:12,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:29:12,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:12,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:12,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 09:29:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:12,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:12,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:12,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:12,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:12,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:29:12,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:12,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:12,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:29:12,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:29:12,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:29:12,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:12,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 09:29:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:12,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:12,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:12,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:12,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:12,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:29:12,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:12,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:12,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:29:12,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:29:12,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:29:12,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:12,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 09:29:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:12,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:12,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:12,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:12,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:12,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:29:12,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:12,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:12,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:29:12,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:29:12,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:29:12,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:12,761 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-28 09:29:12,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566393780] [2020-10-28 09:29:12,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:29:12,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 09:29:12,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138115594] [2020-10-28 09:29:12,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 09:29:12,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:29:12,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 09:29:12,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:29:12,763 INFO L87 Difference]: Start difference. First operand 152 states and 178 transitions. Second operand 17 states. [2020-10-28 09:29:16,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:29:16,136 INFO L93 Difference]: Finished difference Result 322 states and 393 transitions. [2020-10-28 09:29:16,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-28 09:29:16,137 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 72 [2020-10-28 09:29:16,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:29:16,141 INFO L225 Difference]: With dead ends: 322 [2020-10-28 09:29:16,141 INFO L226 Difference]: Without dead ends: 319 [2020-10-28 09:29:16,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 894 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=387, Invalid=3035, Unknown=0, NotChecked=0, Total=3422 [2020-10-28 09:29:16,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-28 09:29:16,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 239. [2020-10-28 09:29:16,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-10-28 09:29:16,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 291 transitions. [2020-10-28 09:29:16,195 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 291 transitions. Word has length 72 [2020-10-28 09:29:16,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:29:16,195 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 291 transitions. [2020-10-28 09:29:16,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 09:29:16,195 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 291 transitions. [2020-10-28 09:29:16,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-28 09:29:16,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:29:16,197 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:29:16,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 09:29:16,197 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:29:16,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:29:16,198 INFO L82 PathProgramCache]: Analyzing trace with hash 2061550765, now seen corresponding path program 1 times [2020-10-28 09:29:16,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:29:16,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279989466] [2020-10-28 09:29:16,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:29:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:16,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:16,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:16,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:16,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:16,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:21,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:21,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 09:29:21,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:29:21,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 09:29:21,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:21,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:21,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:29:21,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:29:21,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 09:29:21,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:21,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:29:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:21,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:21,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:21,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:29:21,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:21,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:29:21,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:21,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:21,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:21,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:29:21,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:21,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:21,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 09:29:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:21,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:21,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:21,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:21,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:21,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:29:21,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:21,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:21,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:29:21,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:29:21,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:29:21,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:21,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 09:29:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:21,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:21,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:21,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:21,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:21,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:29:21,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:21,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:21,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:21,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:29:21,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:21,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:21,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 09:29:21,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:21,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:21,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:21,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:21,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:21,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:29:21,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:21,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:21,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:21,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:29:21,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:21,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:21,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 09:29:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:21,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:21,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:21,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:21,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:21,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:29:21,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:21,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:21,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:21,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:29:21,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:21,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:21,306 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-28 09:29:21,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279989466] [2020-10-28 09:29:21,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:29:21,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:29:21,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090106482] [2020-10-28 09:29:21,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:29:21,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:29:21,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:29:21,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:29:21,309 INFO L87 Difference]: Start difference. First operand 239 states and 291 transitions. Second operand 4 states. [2020-10-28 09:29:21,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:29:21,486 INFO L93 Difference]: Finished difference Result 270 states and 325 transitions. [2020-10-28 09:29:21,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:29:21,487 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-10-28 09:29:21,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:29:21,491 INFO L225 Difference]: With dead ends: 270 [2020-10-28 09:29:21,491 INFO L226 Difference]: Without dead ends: 200 [2020-10-28 09:29:21,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:29:21,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-28 09:29:21,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2020-10-28 09:29:21,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-28 09:29:21,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 236 transitions. [2020-10-28 09:29:21,552 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 236 transitions. Word has length 72 [2020-10-28 09:29:21,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:29:21,552 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 236 transitions. [2020-10-28 09:29:21,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:29:21,552 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 236 transitions. [2020-10-28 09:29:21,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-28 09:29:21,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:29:21,554 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 09:29:21,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 09:29:21,554 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:29:21,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:29:21,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1609436763, now seen corresponding path program 4 times [2020-10-28 09:29:21,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:29:21,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112760199] [2020-10-28 09:29:21,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:29:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:21,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:21,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:22,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:22,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:22,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:22,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:22,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:25,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:25,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:26,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:26,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:26,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:26,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 09:29:26,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 09:29:26,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 09:29:26,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:26,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:26,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-28 09:29:26,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 09:29:26,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 09:29:26,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:27,297 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 37 [2020-10-28 09:29:27,464 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 32 [2020-10-28 09:29:27,588 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 30 [2020-10-28 09:29:28,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:29:28,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:28,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:28,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:28,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:29:28,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:28,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:29:28,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:28,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:28,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:28,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:29:28,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:28,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:28,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 09:29:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:28,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:28,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:28,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:28,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:28,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:29:28,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:29:28,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:28,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:28,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:29:28,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:29:28,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:29:28,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:28,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 09:29:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:28,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:28,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:28,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:28,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:28,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:29:28,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:28,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:28,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:29:28,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:29:28,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:29:28,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:28,497 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-28 09:29:28,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112760199] [2020-10-28 09:29:28,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:29:28,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 09:29:28,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140635405] [2020-10-28 09:29:28,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 09:29:28,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:29:28,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 09:29:28,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:29:28,498 INFO L87 Difference]: Start difference. First operand 200 states and 236 transitions. Second operand 18 states. [2020-10-28 09:29:30,222 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-10-28 09:29:31,022 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2020-10-28 09:29:31,289 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-10-28 09:29:31,582 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 49 [2020-10-28 09:29:31,850 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 51 [2020-10-28 09:29:32,081 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-10-28 09:29:32,463 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2020-10-28 09:29:32,837 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 49 [2020-10-28 09:29:33,329 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2020-10-28 09:29:33,831 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2020-10-28 09:29:34,329 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2020-10-28 09:29:34,714 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-28 09:29:34,928 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-10-28 09:29:35,185 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-10-28 09:29:35,523 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-10-28 09:29:35,880 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-10-28 09:29:36,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:29:36,198 INFO L93 Difference]: Finished difference Result 321 states and 386 transitions. [2020-10-28 09:29:36,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-28 09:29:36,199 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 70 [2020-10-28 09:29:36,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:29:36,205 INFO L225 Difference]: With dead ends: 321 [2020-10-28 09:29:36,206 INFO L226 Difference]: Without dead ends: 288 [2020-10-28 09:29:36,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 10 SyntacticMatches, 7 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=421, Invalid=2029, Unknown=0, NotChecked=0, Total=2450 [2020-10-28 09:29:36,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-10-28 09:29:36,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 226. [2020-10-28 09:29:36,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-28 09:29:36,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 267 transitions. [2020-10-28 09:29:36,265 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 267 transitions. Word has length 70 [2020-10-28 09:29:36,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:29:36,265 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 267 transitions. [2020-10-28 09:29:36,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 09:29:36,265 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 267 transitions. [2020-10-28 09:29:36,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-28 09:29:36,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:29:36,266 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 09:29:36,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 09:29:36,267 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:29:36,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:29:36,267 INFO L82 PathProgramCache]: Analyzing trace with hash -2066410727, now seen corresponding path program 4 times [2020-10-28 09:29:36,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:29:36,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702526223] [2020-10-28 09:29:36,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:29:36,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:36,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:36,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:36,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:36,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:41,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:41,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 09:29:41,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:29:41,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 09:29:41,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:41,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:41,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:29:41,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 09:29:41,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 09:29:41,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:41,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:29:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:41,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:41,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:41,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:29:41,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:41,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:29:41,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:41,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:41,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:41,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:29:41,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:41,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:41,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 09:29:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:41,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:41,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:41,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:41,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:41,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:29:41,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:41,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:41,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:41,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:29:41,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:41,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:41,586 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-28 09:29:41,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702526223] [2020-10-28 09:29:41,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:29:41,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:29:41,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745089248] [2020-10-28 09:29:41,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:29:41,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:29:41,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:29:41,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:29:41,588 INFO L87 Difference]: Start difference. First operand 226 states and 267 transitions. Second operand 10 states. [2020-10-28 09:29:42,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:29:42,963 INFO L93 Difference]: Finished difference Result 435 states and 516 transitions. [2020-10-28 09:29:42,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 09:29:42,964 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 73 [2020-10-28 09:29:42,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:29:42,966 INFO L225 Difference]: With dead ends: 435 [2020-10-28 09:29:42,966 INFO L226 Difference]: Without dead ends: 264 [2020-10-28 09:29:42,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-10-28 09:29:42,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-10-28 09:29:43,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 249. [2020-10-28 09:29:43,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-28 09:29:43,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 293 transitions. [2020-10-28 09:29:43,023 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 293 transitions. Word has length 73 [2020-10-28 09:29:43,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:29:43,024 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 293 transitions. [2020-10-28 09:29:43,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:29:43,024 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 293 transitions. [2020-10-28 09:29:43,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-28 09:29:43,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:29:43,025 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-28 09:29:43,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 09:29:43,025 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:29:43,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:29:43,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1078283695, now seen corresponding path program 5 times [2020-10-28 09:29:43,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:29:43,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414441772] [2020-10-28 09:29:43,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:29:43,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:43,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:43,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:43,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:43,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:43,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:43,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:43,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:44,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:44,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:44,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:45,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:45,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:45,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:45,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:48,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:48,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 09:29:48,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 09:29:48,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 09:29:48,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:48,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:48,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 09:29:48,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 09:29:48,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 09:29:48,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:48,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:29:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:48,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:48,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:48,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:29:48,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:48,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:29:48,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:48,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:48,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:48,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:29:48,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:48,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:48,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 09:29:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:48,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:48,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:48,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:48,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:48,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:29:48,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:48,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:48,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:48,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:29:48,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:48,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:48,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 09:29:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:48,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:48,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:48,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:48,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:48,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:29:48,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:48,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:48,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:48,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:29:48,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:48,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:48,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 09:29:48,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:48,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:48,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:48,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:48,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:48,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:29:48,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:48,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:48,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:48,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:29:48,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:48,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:48,177 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-28 09:29:48,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414441772] [2020-10-28 09:29:48,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:29:48,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 09:29:48,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822907177] [2020-10-28 09:29:48,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 09:29:48,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:29:48,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 09:29:48,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:29:48,179 INFO L87 Difference]: Start difference. First operand 249 states and 293 transitions. Second operand 8 states. [2020-10-28 09:29:48,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:29:48,913 INFO L93 Difference]: Finished difference Result 304 states and 352 transitions. [2020-10-28 09:29:48,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 09:29:48,914 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 75 [2020-10-28 09:29:48,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:29:48,916 INFO L225 Difference]: With dead ends: 304 [2020-10-28 09:29:48,916 INFO L226 Difference]: Without dead ends: 238 [2020-10-28 09:29:48,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:29:48,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-28 09:29:48,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 235. [2020-10-28 09:29:48,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-10-28 09:29:48,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 269 transitions. [2020-10-28 09:29:48,962 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 269 transitions. Word has length 75 [2020-10-28 09:29:48,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:29:48,962 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 269 transitions. [2020-10-28 09:29:48,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 09:29:48,963 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 269 transitions. [2020-10-28 09:29:48,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-28 09:29:48,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:29:48,964 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:29:48,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 09:29:48,964 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:29:48,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:29:48,965 INFO L82 PathProgramCache]: Analyzing trace with hash -918434496, now seen corresponding path program 6 times [2020-10-28 09:29:48,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:29:48,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490556781] [2020-10-28 09:29:48,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:29:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:48,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:49,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:49,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:49,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:49,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:53,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:53,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:53,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:53,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:53,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:53,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 09:29:53,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 09:29:53,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 09:29:53,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:53,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:53,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 09:29:53,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 09:29:53,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 09:29:53,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:54,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:29:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:54,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:54,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:54,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:29:54,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:54,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:29:54,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:54,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:54,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:54,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:29:54,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:54,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:54,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 09:29:54,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:54,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:54,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:54,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:54,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:54,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:29:54,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 09:29:54,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:54,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:54,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:29:54,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:29:54,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:29:54,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:54,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 09:29:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:54,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:54,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:54,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:54,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:54,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:29:54,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:54,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:54,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:29:54,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:29:54,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:29:54,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:54,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 09:29:54,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:54,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:54,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:54,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:54,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:54,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:29:54,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:54,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:54,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:29:54,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:29:54,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:29:54,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:54,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 09:29:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:54,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:54,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:54,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:54,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:54,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:29:54,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:54,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:54,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:29:54,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:29:54,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:29:54,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:54,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 09:29:54,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:54,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:54,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:54,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:54,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:54,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:29:54,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:54,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:54,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:29:54,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:29:54,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:29:54,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:54,273 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-28 09:29:54,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490556781] [2020-10-28 09:29:54,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:29:54,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 09:29:54,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544849061] [2020-10-28 09:29:54,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 09:29:54,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:29:54,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 09:29:54,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:29:54,275 INFO L87 Difference]: Start difference. First operand 235 states and 269 transitions. Second operand 12 states. [2020-10-28 09:29:55,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:29:55,450 INFO L93 Difference]: Finished difference Result 246 states and 279 transitions. [2020-10-28 09:29:55,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 09:29:55,451 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 81 [2020-10-28 09:29:55,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:29:55,452 INFO L225 Difference]: With dead ends: 246 [2020-10-28 09:29:55,452 INFO L226 Difference]: Without dead ends: 180 [2020-10-28 09:29:55,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=131, Invalid=421, Unknown=0, NotChecked=0, Total=552 [2020-10-28 09:29:55,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-28 09:29:55,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2020-10-28 09:29:55,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-28 09:29:55,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 207 transitions. [2020-10-28 09:29:55,487 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 207 transitions. Word has length 81 [2020-10-28 09:29:55,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:29:55,487 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 207 transitions. [2020-10-28 09:29:55,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 09:29:55,488 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 207 transitions. [2020-10-28 09:29:55,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-28 09:29:55,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:29:55,489 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:29:55,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 09:29:55,489 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:29:55,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:29:55,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1103989878, now seen corresponding path program 7 times [2020-10-28 09:29:55,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:29:55,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278563374] [2020-10-28 09:29:55,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:29:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:55,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:55,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:55,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:55,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:56,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:56,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:56,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:57,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:57,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:00,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:00,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 09:30:00,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 09:30:00,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 09:30:00,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:00,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:00,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 09:30:00,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 09:30:00,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 09:30:00,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:01,122 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 42 [2020-10-28 09:30:01,388 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 36 [2020-10-28 09:30:01,809 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 37 [2020-10-28 09:30:02,085 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 37 [2020-10-28 09:30:02,335 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 32 [2020-10-28 09:30:02,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:30:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:02,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:02,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:02,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:30:02,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:02,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:30:02,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:02,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:02,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:02,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:30:02,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:02,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:02,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 09:30:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:02,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:02,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:02,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:02,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:30:02,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:30:02,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:30:02,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:02,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:02,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:30:02,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:30:02,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:30:02,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:02,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 09:30:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:02,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:02,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:02,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:30:02,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:02,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:30:02,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:02,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:02,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:30:02,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:30:02,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:30:02,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:02,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 09:30:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:02,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:02,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:02,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:30:02,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:02,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 09:30:02,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:02,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:02,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:30:02,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:30:02,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:30:02,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:03,031 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-28 09:30:03,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278563374] [2020-10-28 09:30:03,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:30:03,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 09:30:03,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308783289] [2020-10-28 09:30:03,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 09:30:03,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:30:03,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 09:30:03,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:30:03,034 INFO L87 Difference]: Start difference. First operand 180 states and 207 transitions. Second operand 18 states. [2020-10-28 09:30:03,276 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 42 [2020-10-28 09:30:04,290 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2020-10-28 09:30:04,997 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2020-10-28 09:30:05,605 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2020-10-28 09:30:05,902 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2020-10-28 09:30:06,199 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-10-28 09:30:06,392 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-28 09:30:06,558 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 40 [2020-10-28 09:30:06,847 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-10-28 09:30:07,389 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2020-10-28 09:30:07,548 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2020-10-28 09:30:08,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:30:08,086 INFO L93 Difference]: Finished difference Result 211 states and 240 transitions. [2020-10-28 09:30:08,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-28 09:30:08,087 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 79 [2020-10-28 09:30:08,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:30:08,089 INFO L225 Difference]: With dead ends: 211 [2020-10-28 09:30:08,089 INFO L226 Difference]: Without dead ends: 184 [2020-10-28 09:30:08,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 10 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=264, Invalid=1376, Unknown=0, NotChecked=0, Total=1640 [2020-10-28 09:30:08,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-28 09:30:08,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 179. [2020-10-28 09:30:08,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-28 09:30:08,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 204 transitions. [2020-10-28 09:30:08,139 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 204 transitions. Word has length 79 [2020-10-28 09:30:08,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:30:08,139 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 204 transitions. [2020-10-28 09:30:08,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 09:30:08,139 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 204 transitions. [2020-10-28 09:30:08,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-28 09:30:08,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:30:08,141 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:30:08,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 09:30:08,142 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:30:08,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:30:08,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1461774292, now seen corresponding path program 5 times [2020-10-28 09:30:08,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:30:08,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430411450] [2020-10-28 09:30:08,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:30:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:08,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:09,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:10,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:11,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:12,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:13,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:13,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 09:30:13,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:30:13,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 09:30:13,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:13,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:13,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-28 09:30:13,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 09:30:13,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-28 09:30:13,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:14,238 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2020-10-28 09:30:14,739 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 61 [2020-10-28 09:30:15,206 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 43 [2020-10-28 09:30:15,390 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 34 [2020-10-28 09:30:15,736 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 32 [2020-10-28 09:30:16,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:30:16,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:16,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:16,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:16,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:30:16,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:16,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:30:16,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:16,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:16,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:16,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:30:16,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:16,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:16,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 09:30:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:16,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:16,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:16,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:16,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:30:16,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:30:16,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:30:16,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:16,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:16,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:30:16,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:30:16,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:30:16,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:16,714 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-28 09:30:16,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430411450] [2020-10-28 09:30:16,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:30:16,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 09:30:16,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674869409] [2020-10-28 09:30:16,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 09:30:16,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:30:16,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 09:30:16,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:30:16,716 INFO L87 Difference]: Start difference. First operand 179 states and 204 transitions. Second operand 19 states. [2020-10-28 09:30:17,801 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 37 [2020-10-28 09:30:18,031 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 51 [2020-10-28 09:30:18,243 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2020-10-28 09:30:18,454 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-28 09:30:18,811 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2020-10-28 09:30:19,023 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2020-10-28 09:30:19,258 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2020-10-28 09:30:19,492 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-10-28 09:30:19,722 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2020-10-28 09:30:20,062 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2020-10-28 09:30:20,293 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45 [2020-10-28 09:30:20,682 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-28 09:30:20,950 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2020-10-28 09:30:21,849 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-10-28 09:30:22,063 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2020-10-28 09:30:22,954 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-10-28 09:30:23,368 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2020-10-28 09:30:23,665 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-28 09:30:23,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:30:23,910 INFO L93 Difference]: Finished difference Result 339 states and 401 transitions. [2020-10-28 09:30:23,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-28 09:30:23,912 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 77 [2020-10-28 09:30:23,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:30:23,916 INFO L225 Difference]: With dead ends: 339 [2020-10-28 09:30:23,916 INFO L226 Difference]: Without dead ends: 300 [2020-10-28 09:30:23,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 13 SyntacticMatches, 14 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=450, Invalid=2202, Unknown=0, NotChecked=0, Total=2652 [2020-10-28 09:30:23,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-28 09:30:23,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 222. [2020-10-28 09:30:23,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-10-28 09:30:23,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 254 transitions. [2020-10-28 09:30:23,961 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 254 transitions. Word has length 77 [2020-10-28 09:30:23,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:30:23,962 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 254 transitions. [2020-10-28 09:30:23,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 09:30:23,962 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 254 transitions. [2020-10-28 09:30:23,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-28 09:30:23,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:30:23,963 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 09:30:23,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 09:30:23,964 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:30:23,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:30:23,964 INFO L82 PathProgramCache]: Analyzing trace with hash -2095840709, now seen corresponding path program 8 times [2020-10-28 09:30:23,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:30:23,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801355894] [2020-10-28 09:30:23,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:30:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:24,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:25,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:25,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:25,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:25,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:25,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:26,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:26,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:27,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:27,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:29,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:29,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 09:30:29,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 09:30:29,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 09:30:29,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:29,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:29,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-28 09:30:29,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 09:30:29,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 09:30:29,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:29,787 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2020-10-28 09:30:29,999 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2020-10-28 09:30:30,238 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 41 [2020-10-28 09:30:30,568 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-10-28 09:30:30,771 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 34 [2020-10-28 09:30:30,990 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2020-10-28 09:30:31,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:30:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:31,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:31,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:31,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:30:31,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:31,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:30:31,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:31,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:31,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:31,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:30:31,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:31,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:31,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 09:30:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:31,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:31,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:31,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:31,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:30:31,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:30:31,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:30:31,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:31,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:31,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:30:31,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:30:31,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:30:31,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:31,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 09:30:31,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:31,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:31,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:31,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:30:31,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:31,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:30:31,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:31,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:31,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:30:31,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:30:31,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:30:31,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:31,931 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 11 proven. 24 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-28 09:30:31,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801355894] [2020-10-28 09:30:31,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:30:31,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 09:30:31,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577199497] [2020-10-28 09:30:31,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 09:30:31,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:30:31,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 09:30:31,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:30:31,933 INFO L87 Difference]: Start difference. First operand 222 states and 254 transitions. Second operand 21 states. [2020-10-28 09:30:33,408 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2020-10-28 09:30:33,616 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 49 [2020-10-28 09:30:33,825 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2020-10-28 09:30:34,071 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2020-10-28 09:30:34,236 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 35 [2020-10-28 09:30:34,500 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 41 [2020-10-28 09:30:34,789 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-28 09:30:35,065 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2020-10-28 09:30:35,338 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-28 09:30:35,617 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2020-10-28 09:30:35,858 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2020-10-28 09:30:36,110 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 40 [2020-10-28 09:30:36,351 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 41 [2020-10-28 09:30:36,860 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-10-28 09:30:37,079 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-28 09:30:37,419 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 43 [2020-10-28 09:30:38,202 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2020-10-28 09:30:38,778 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2020-10-28 09:30:38,966 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-28 09:30:39,305 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-10-28 09:30:39,785 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2020-10-28 09:30:40,066 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-28 09:30:40,312 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2020-10-28 09:30:40,658 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2020-10-28 09:30:41,173 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-10-28 09:30:41,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:30:41,572 INFO L93 Difference]: Finished difference Result 347 states and 408 transitions. [2020-10-28 09:30:41,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-28 09:30:41,573 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 86 [2020-10-28 09:30:41,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:30:41,576 INFO L225 Difference]: With dead ends: 347 [2020-10-28 09:30:41,576 INFO L226 Difference]: Without dead ends: 314 [2020-10-28 09:30:41,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 11 SyntacticMatches, 11 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 896 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=508, Invalid=2798, Unknown=0, NotChecked=0, Total=3306 [2020-10-28 09:30:41,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-10-28 09:30:41,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 252. [2020-10-28 09:30:41,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-28 09:30:41,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 289 transitions. [2020-10-28 09:30:41,633 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 289 transitions. Word has length 86 [2020-10-28 09:30:41,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:30:41,634 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 289 transitions. [2020-10-28 09:30:41,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 09:30:41,634 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 289 transitions. [2020-10-28 09:30:41,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-28 09:30:41,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:30:41,636 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:30:41,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 09:30:41,636 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:30:41,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:30:41,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1337577667, now seen corresponding path program 6 times [2020-10-28 09:30:41,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:30:41,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813811878] [2020-10-28 09:30:41,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:30:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:41,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:41,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:41,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:46,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:46,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 09:30:46,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:30:46,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 09:30:46,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:46,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:46,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 09:30:46,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 09:30:46,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 09:30:46,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:47,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:30:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:47,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:47,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:47,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:30:47,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:47,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:30:47,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:47,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:47,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:47,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:30:47,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:47,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:47,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 09:30:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:47,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:47,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:47,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:30:47,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:47,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:30:47,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:47,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:47,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:47,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:30:47,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:47,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:47,103 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 28 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-10-28 09:30:47,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813811878] [2020-10-28 09:30:47,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:30:47,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 09:30:47,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595423291] [2020-10-28 09:30:47,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 09:30:47,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:30:47,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 09:30:47,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:30:47,105 INFO L87 Difference]: Start difference. First operand 252 states and 289 transitions. Second operand 12 states. [2020-10-28 09:30:49,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:30:49,097 INFO L93 Difference]: Finished difference Result 476 states and 552 transitions. [2020-10-28 09:30:49,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 09:30:49,099 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2020-10-28 09:30:49,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:30:49,102 INFO L225 Difference]: With dead ends: 476 [2020-10-28 09:30:49,102 INFO L226 Difference]: Without dead ends: 299 [2020-10-28 09:30:49,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2020-10-28 09:30:49,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-28 09:30:49,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 275. [2020-10-28 09:30:49,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-10-28 09:30:49,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 315 transitions. [2020-10-28 09:30:49,166 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 315 transitions. Word has length 89 [2020-10-28 09:30:49,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:30:49,166 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 315 transitions. [2020-10-28 09:30:49,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 09:30:49,166 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 315 transitions. [2020-10-28 09:30:49,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-28 09:30:49,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:30:49,168 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 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] [2020-10-28 09:30:49,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 09:30:49,168 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:30:49,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:30:49,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1232013846, now seen corresponding path program 9 times [2020-10-28 09:30:49,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:30:49,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964632830] [2020-10-28 09:30:49,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:30:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:49,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:49,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:49,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:49,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:54,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:54,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 09:30:54,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:30:54,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 09:30:54,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:54,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:54,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 09:30:54,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:30:54,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 09:30:54,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:54,870 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2020-10-28 09:30:55,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:30:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:55,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:55,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:55,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:30:55,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:55,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:30:55,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:55,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:55,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:55,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:30:55,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:55,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:55,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 09:30:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:55,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:55,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:55,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:30:55,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:55,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:30:55,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:55,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:55,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:30:55,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:30:55,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:30:55,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:55,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 09:30:55,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:55,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:55,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:55,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:30:55,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:55,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:30:55,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:55,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:55,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:30:55,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:30:55,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:30:55,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:55,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 09:30:55,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:55,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:55,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:55,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:30:55,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:55,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:30:55,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:55,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:55,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:30:55,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:30:55,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:30:55,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:55,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 09:30:55,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:55,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:55,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:55,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:30:55,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:55,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:30:55,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:55,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:55,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:30:55,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:30:55,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:30:55,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:55,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 09:30:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:55,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:55,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:55,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:30:55,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:55,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:30:55,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:55,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:55,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:55,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:30:55,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:55,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:55,343 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 28 proven. 33 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-28 09:30:55,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964632830] [2020-10-28 09:30:55,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:30:55,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 09:30:55,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114953233] [2020-10-28 09:30:55,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 09:30:55,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:30:55,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 09:30:55,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:30:55,345 INFO L87 Difference]: Start difference. First operand 275 states and 315 transitions. Second operand 19 states. [2020-10-28 09:30:56,597 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2020-10-28 09:30:56,833 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2020-10-28 09:30:57,020 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2020-10-28 09:30:57,245 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 59 [2020-10-28 09:30:57,772 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-10-28 09:30:57,932 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2020-10-28 09:30:58,320 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-10-28 09:30:58,617 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2020-10-28 09:30:58,821 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2020-10-28 09:30:59,041 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2020-10-28 09:31:00,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:31:00,502 INFO L93 Difference]: Finished difference Result 326 states and 371 transitions. [2020-10-28 09:31:00,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-28 09:31:00,503 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 97 [2020-10-28 09:31:00,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:31:00,505 INFO L225 Difference]: With dead ends: 326 [2020-10-28 09:31:00,505 INFO L226 Difference]: Without dead ends: 281 [2020-10-28 09:31:00,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=418, Invalid=1838, Unknown=0, NotChecked=0, Total=2256 [2020-10-28 09:31:00,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-10-28 09:31:00,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 275. [2020-10-28 09:31:00,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-10-28 09:31:00,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 312 transitions. [2020-10-28 09:31:00,560 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 312 transitions. Word has length 97 [2020-10-28 09:31:00,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:31:00,561 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 312 transitions. [2020-10-28 09:31:00,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 09:31:00,561 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 312 transitions. [2020-10-28 09:31:00,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-28 09:31:00,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:31:00,562 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:31:00,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 09:31:00,563 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:31:00,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:31:00,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1783089772, now seen corresponding path program 10 times [2020-10-28 09:31:00,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:31:00,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107286315] [2020-10-28 09:31:00,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:31:00,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:31:00,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:00,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:01,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:01,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:01,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:02,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:02,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:02,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:02,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:04,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:04,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:05,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:31:05,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 09:31:05,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 09:31:05,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 09:31:05,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:31:05,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:31:05,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-28 09:31:05,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 09:31:05,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 09:31:05,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:31:06,139 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 30 [2020-10-28 09:31:06,616 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 40 [2020-10-28 09:31:06,830 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 34 [2020-10-28 09:31:07,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:31:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:31:07,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:07,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:31:07,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:31:07,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:31:07,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:31:07,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:31:07,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:31:07,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:31:07,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:31:07,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:31:07,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:31:07,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 09:31:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:31:07,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:07,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:07,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:31:07,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:31:07,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:31:07,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:31:07,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:31:07,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:31:07,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:31:07,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:31:07,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:31:07,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:31:07,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 09:31:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:31:07,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:07,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:31:07,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:31:07,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:31:07,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:31:07,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:31:07,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:31:07,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:31:07,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:31:07,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:31:07,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:31:07,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 09:31:07,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:31:07,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:07,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:31:07,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:31:07,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:31:07,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:31:07,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:31:07,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:31:07,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:31:07,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:31:07,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:31:07,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:31:07,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 09:31:07,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:31:07,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:07,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:31:07,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:31:07,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:31:07,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:31:07,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:31:07,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:31:07,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:31:07,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:31:07,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:31:07,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:31:07,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 09:31:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:31:07,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:07,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:31:07,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:31:07,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:31:07,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:31:07,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:31:07,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:31:07,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:31:07,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:31:07,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:31:07,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:31:07,823 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 17 proven. 44 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-28 09:31:07,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107286315] [2020-10-28 09:31:07,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:31:07,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 09:31:07,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286027518] [2020-10-28 09:31:07,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 09:31:07,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:31:07,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 09:31:07,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:31:07,825 INFO L87 Difference]: Start difference. First operand 275 states and 312 transitions. Second operand 18 states. [2020-10-28 09:31:08,011 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 28 [2020-10-28 09:31:08,444 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2020-10-28 09:31:08,656 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-10-28 09:31:08,811 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2020-10-28 09:31:09,001 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-10-28 09:31:09,460 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 28 [2020-10-28 09:31:09,691 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 35 [2020-10-28 09:31:09,847 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2020-10-28 09:31:10,039 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-28 09:31:10,212 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-10-28 09:31:10,430 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-28 09:31:10,682 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2020-10-28 09:31:11,122 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2020-10-28 09:31:11,390 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2020-10-28 09:31:11,713 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-10-28 09:31:12,140 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2020-10-28 09:31:12,498 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 42 [2020-10-28 09:31:12,780 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2020-10-28 09:31:13,264 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2020-10-28 09:31:13,569 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2020-10-28 09:31:13,789 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 29 [2020-10-28 09:31:14,010 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 36 [2020-10-28 09:31:14,343 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-10-28 09:31:14,572 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-10-28 09:31:15,286 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-10-28 09:31:15,535 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-10-28 09:31:15,703 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-28 09:31:15,996 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2020-10-28 09:31:16,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:31:16,211 INFO L93 Difference]: Finished difference Result 307 states and 347 transitions. [2020-10-28 09:31:16,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-28 09:31:16,213 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 97 [2020-10-28 09:31:16,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:31:16,216 INFO L225 Difference]: With dead ends: 307 [2020-10-28 09:31:16,216 INFO L226 Difference]: Without dead ends: 290 [2020-10-28 09:31:16,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 18 SyntacticMatches, 9 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=552, Invalid=2310, Unknown=0, NotChecked=0, Total=2862 [2020-10-28 09:31:16,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-10-28 09:31:16,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 279. [2020-10-28 09:31:16,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-10-28 09:31:16,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 316 transitions. [2020-10-28 09:31:16,285 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 316 transitions. Word has length 97 [2020-10-28 09:31:16,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:31:16,286 INFO L481 AbstractCegarLoop]: Abstraction has 279 states and 316 transitions. [2020-10-28 09:31:16,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 09:31:16,286 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 316 transitions. [2020-10-28 09:31:16,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-28 09:31:16,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:31:16,287 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 09:31:16,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 09:31:16,288 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:31:16,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:31:16,288 INFO L82 PathProgramCache]: Analyzing trace with hash -678777932, now seen corresponding path program 11 times [2020-10-28 09:31:16,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:31:16,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34800019] [2020-10-28 09:31:16,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:31:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:31:16,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:17,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:17,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:17,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:17,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:17,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:17,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:17,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:18,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:18,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:18,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:18,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:18,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:21,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:31:21,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 09:31:21,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 09:31:21,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 09:31:21,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:31:21,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:31:21,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-28 09:31:21,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 09:31:21,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 09:31:21,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:31:21,752 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 35 [2020-10-28 09:31:21,890 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 26 [2020-10-28 09:31:22,045 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2020-10-28 09:31:22,199 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 32 [2020-10-28 09:31:22,432 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 36 [2020-10-28 09:31:22,660 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 48 [2020-10-28 09:31:23,189 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 43 [2020-10-28 09:31:23,488 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 34 [2020-10-28 09:31:23,746 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 33 [2020-10-28 09:31:23,977 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 34 [2020-10-28 09:31:24,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:31:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:31:24,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:24,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:31:24,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:31:24,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:31:24,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:31:24,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:31:24,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:31:24,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:31:24,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:31:24,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:31:24,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:31:24,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 09:31:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:31:24,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:24,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:24,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:31:24,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:31:24,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:31:24,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:31:24,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:31:24,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:31:24,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:31:24,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:31:24,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:31:24,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:31:24,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 09:31:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:31:24,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:24,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:31:24,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:31:24,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:31:24,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:31:24,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:31:24,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:31:24,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:31:24,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:31:24,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:31:24,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:31:24,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 09:31:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:31:24,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:24,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:31:24,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:31:24,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:31:24,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:31:24,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:31:24,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:31:24,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:31:24,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:31:24,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:31:24,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:31:24,940 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-28 09:31:24,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34800019] [2020-10-28 09:31:24,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:31:24,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-28 09:31:24,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758696693] [2020-10-28 09:31:24,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-28 09:31:24,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:31:24,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-28 09:31:24,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2020-10-28 09:31:24,942 INFO L87 Difference]: Start difference. First operand 279 states and 316 transitions. Second operand 22 states. [2020-10-28 09:31:25,999 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-10-28 09:31:26,245 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-10-28 09:31:26,494 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-10-28 09:31:26,906 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-10-28 09:31:27,157 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2020-10-28 09:31:27,674 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2020-10-28 09:31:28,113 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-10-28 09:31:28,418 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2020-10-28 09:31:28,809 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2020-10-28 09:31:29,219 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-28 09:31:29,368 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2020-10-28 09:31:29,663 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2020-10-28 09:31:30,038 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2020-10-28 09:31:30,474 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2020-10-28 09:31:30,692 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-10-28 09:31:30,946 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-10-28 09:31:31,289 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-28 09:31:31,614 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-10-28 09:31:31,901 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-10-28 09:31:32,332 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-28 09:31:32,810 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-10-28 09:31:33,140 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-10-28 09:31:33,797 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-10-28 09:31:33,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:31:33,913 INFO L93 Difference]: Finished difference Result 341 states and 386 transitions. [2020-10-28 09:31:33,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-28 09:31:33,916 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 95 [2020-10-28 09:31:33,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:31:33,918 INFO L225 Difference]: With dead ends: 341 [2020-10-28 09:31:33,918 INFO L226 Difference]: Without dead ends: 314 [2020-10-28 09:31:33,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 10 SyntacticMatches, 8 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=392, Invalid=2260, Unknown=0, NotChecked=0, Total=2652 [2020-10-28 09:31:33,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-10-28 09:31:33,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 278. [2020-10-28 09:31:33,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-10-28 09:31:33,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 313 transitions. [2020-10-28 09:31:33,994 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 313 transitions. Word has length 95 [2020-10-28 09:31:33,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:31:33,994 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 313 transitions. [2020-10-28 09:31:33,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-28 09:31:33,994 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 313 transitions. [2020-10-28 09:31:33,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-28 09:31:33,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:31:33,996 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:31:33,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 09:31:33,996 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:31:33,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:31:33,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1007497346, now seen corresponding path program 7 times [2020-10-28 09:31:33,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:31:33,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019396152] [2020-10-28 09:31:33,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:31:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:31:34,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking...