/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-tiling/mbpr2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:07:13,233 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:07:13,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:07:13,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:07:13,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:07:13,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:07:13,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:07:13,280 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:07:13,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:07:13,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:07:13,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:07:13,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:07:13,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:07:13,289 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:07:13,290 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:07:13,292 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:07:13,293 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:07:13,294 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:07:13,296 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:07:13,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:07:13,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:07:13,303 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:07:13,304 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:07:13,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:07:13,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:07:13,326 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:07:13,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:07:13,327 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:07:13,328 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:07:13,334 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:07:13,334 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:07:13,336 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:07:13,337 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:07:13,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:07:13,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:07:13,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:07:13,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:07:13,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:07:13,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:07:13,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:07:13,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:07:13,348 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 04:07:13,407 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:07:13,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:07:13,412 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:07:13,413 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:07:13,413 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:07:13,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:07:13,414 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:07:13,414 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:07:13,415 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:07:13,415 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:07:13,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:07:13,416 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:07:13,416 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:07:13,416 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:07:13,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:07:13,417 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:07:13,417 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:07:13,417 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:07:13,418 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:07:13,418 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:07:13,418 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:07:13,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:07:13,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:07:13,419 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:07:13,419 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:07:13,419 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:07:13,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:07:13,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:07:13,420 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:07:13,420 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:07:13,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:07:13,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:07:13,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:07:13,902 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:07:13,903 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:07:13,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/mbpr2.c [2020-10-29 04:07:13,994 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f41ee02e8/31884228d1e242ac9fe44ba1898c13a4/FLAG8d256eb7f [2020-10-29 04:07:14,750 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:07:14,750 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/mbpr2.c [2020-10-29 04:07:14,761 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f41ee02e8/31884228d1e242ac9fe44ba1898c13a4/FLAG8d256eb7f [2020-10-29 04:07:15,078 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f41ee02e8/31884228d1e242ac9fe44ba1898c13a4 [2020-10-29 04:07:15,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:07:15,093 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:07:15,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:07:15,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:07:15,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:07:15,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:07:15" (1/1) ... [2020-10-29 04:07:15,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4024b2fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:07:15, skipping insertion in model container [2020-10-29 04:07:15,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:07:15" (1/1) ... [2020-10-29 04:07:15,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:07:15,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:07:15,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:07:15,321 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:07:15,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:07:15,367 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:07:15,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:07:15 WrapperNode [2020-10-29 04:07:15,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:07:15,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:07:15,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:07:15,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:07:15,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:07:15" (1/1) ... [2020-10-29 04:07:15,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:07:15" (1/1) ... [2020-10-29 04:07:15,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:07:15" (1/1) ... [2020-10-29 04:07:15,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:07:15" (1/1) ... [2020-10-29 04:07:15,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:07:15" (1/1) ... [2020-10-29 04:07:15,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:07:15" (1/1) ... [2020-10-29 04:07:15,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:07:15" (1/1) ... [2020-10-29 04:07:15,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:07:15,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:07:15,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:07:15,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:07:15,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:07:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:07:15,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:07:15,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:07:15,516 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:07:15,516 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 04:07:15,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 04:07:15,518 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:07:15,518 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:07:15,518 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:07:15,519 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:07:15,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:07:15,520 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 04:07:15,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 04:07:15,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 04:07:15,521 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:07:15,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:07:15,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:07:15,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:07:15,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:07:15,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:07:15,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:07:16,211 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:07:16,211 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 04:07:16,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:07:16 BoogieIcfgContainer [2020-10-29 04:07:16,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:07:16,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:07:16,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:07:16,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:07:16,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:07:15" (1/3) ... [2020-10-29 04:07:16,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b39e50b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:07:16, skipping insertion in model container [2020-10-29 04:07:16,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:07:15" (2/3) ... [2020-10-29 04:07:16,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b39e50b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:07:16, skipping insertion in model container [2020-10-29 04:07:16,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:07:16" (3/3) ... [2020-10-29 04:07:16,229 INFO L111 eAbstractionObserver]: Analyzing ICFG mbpr2.c [2020-10-29 04:07:16,243 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:07:16,249 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:07:16,266 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:07:16,308 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:07:16,309 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:07:16,309 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:07:16,309 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:07:16,309 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:07:16,310 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:07:16,310 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:07:16,310 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:07:16,337 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-10-29 04:07:16,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-29 04:07:16,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:16,350 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] [2020-10-29 04:07:16,350 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:16,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:16,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1752745616, now seen corresponding path program 1 times [2020-10-29 04:07:16,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:16,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052112746] [2020-10-29 04:07:16,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:16,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:16,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:16,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:16,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:17,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:17,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 04:07:17,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:07:17,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 724 [2020-10-29 04:07:17,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:17,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:17,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:07:17,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 04:07:17,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:17,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 04:07:17,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:07:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:17,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:17,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:17,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:07:17,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:17,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:07:17,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:17,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:17,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:17,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:17,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:17,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:07:17,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:07:17,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:17,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:17,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:17,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:17,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:17,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:07:17,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:07:17,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:17,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:17,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:17,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 04:07:17,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:17,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:07:17,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:07:17,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052112746] [2020-10-29 04:07:17,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:07:17,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 04:07:17,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096171363] [2020-10-29 04:07:17,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:07:17,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:07:17,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:07:17,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:07:17,559 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 6 states. [2020-10-29 04:07:17,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:07:17,910 INFO L93 Difference]: Finished difference Result 82 states and 107 transitions. [2020-10-29 04:07:17,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 04:07:17,913 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-29 04:07:17,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:07:17,921 INFO L225 Difference]: With dead ends: 82 [2020-10-29 04:07:17,922 INFO L226 Difference]: Without dead ends: 42 [2020-10-29 04:07:17,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:07:17,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-29 04:07:17,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-29 04:07:17,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 04:07:17,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-10-29 04:07:17,975 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 25 [2020-10-29 04:07:17,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:07:17,976 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-10-29 04:07:17,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:07:17,976 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-10-29 04:07:17,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-29 04:07:17,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:17,978 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] [2020-10-29 04:07:17,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:07:17,978 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:17,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:17,979 INFO L82 PathProgramCache]: Analyzing trace with hash 932251734, now seen corresponding path program 1 times [2020-10-29 04:07:17,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:17,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799576840] [2020-10-29 04:07:17,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:18,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:18,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:18,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:18,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:18,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:18,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:18,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:19,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:19,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 04:07:19,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 04:07:19,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1355 [2020-10-29 04:07:19,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:19,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:19,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 04:07:19,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:07:19,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 04:07:19,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:19,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:07:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:19,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:19,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:19,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:07:19,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:19,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:07:19,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:19,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:19,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:19,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:19,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:19,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 04:07:19,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:07:19,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:19,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:19,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:19,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:19,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:19,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 04:07:19,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:19,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:19,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:07:19,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:19,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:19,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:07:19,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:07:19,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799576840] [2020-10-29 04:07:19,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:07:19,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 04:07:19,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294613600] [2020-10-29 04:07:19,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:07:19,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:07:19,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:07:19,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:07:19,545 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 5 states. [2020-10-29 04:07:19,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:07:19,755 INFO L93 Difference]: Finished difference Result 72 states and 84 transitions. [2020-10-29 04:07:19,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 04:07:19,755 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-29 04:07:19,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:07:19,759 INFO L225 Difference]: With dead ends: 72 [2020-10-29 04:07:19,759 INFO L226 Difference]: Without dead ends: 49 [2020-10-29 04:07:19,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:07:19,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-29 04:07:19,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2020-10-29 04:07:19,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-29 04:07:19,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-10-29 04:07:19,771 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 25 [2020-10-29 04:07:19,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:07:19,772 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-10-29 04:07:19,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:07:19,772 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-10-29 04:07:19,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 04:07:19,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:19,773 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] [2020-10-29 04:07:19,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:07:19,774 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:19,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:19,774 INFO L82 PathProgramCache]: Analyzing trace with hash 2096369546, now seen corresponding path program 1 times [2020-10-29 04:07:19,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:19,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246870255] [2020-10-29 04:07:19,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:19,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:19,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:19,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:20,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:20,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:20,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:21,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:21,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 04:07:21,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 04:07:21,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1938 [2020-10-29 04:07:21,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:21,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:21,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 04:07:21,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:07:21,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 04:07:21,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:21,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:07:21,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:21,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:21,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:21,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:07:21,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:21,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:07:21,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:21,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:21,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:21,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:21,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:21,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:21,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:07:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:21,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:21,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:21,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:21,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:21,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:07:21,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:21,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:21,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:21,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:21,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:21,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:21,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:07:21,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246870255] [2020-10-29 04:07:21,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:07:21,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 04:07:21,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850105734] [2020-10-29 04:07:21,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 04:07:21,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:07:21,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 04:07:21,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:07:21,978 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 10 states. [2020-10-29 04:07:22,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:07:22,635 INFO L93 Difference]: Finished difference Result 90 states and 107 transitions. [2020-10-29 04:07:22,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 04:07:22,636 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-10-29 04:07:22,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:07:22,638 INFO L225 Difference]: With dead ends: 90 [2020-10-29 04:07:22,639 INFO L226 Difference]: Without dead ends: 87 [2020-10-29 04:07:22,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-10-29 04:07:22,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-29 04:07:22,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 56. [2020-10-29 04:07:22,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-29 04:07:22,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2020-10-29 04:07:22,664 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 33 [2020-10-29 04:07:22,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:07:22,664 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2020-10-29 04:07:22,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 04:07:22,664 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2020-10-29 04:07:22,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 04:07:22,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:22,666 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] [2020-10-29 04:07:22,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:07:22,668 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:22,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:22,668 INFO L82 PathProgramCache]: Analyzing trace with hash -204453044, now seen corresponding path program 1 times [2020-10-29 04:07:22,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:22,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572472824] [2020-10-29 04:07:22,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:22,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:22,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:22,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:22,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:23,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:24,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:24,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 04:07:24,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:07:24,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2013 [2020-10-29 04:07:24,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:24,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:24,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:07:24,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:07:24,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 04:07:24,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:24,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:07:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:24,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:24,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:24,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:07:24,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:24,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:07:24,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:24,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:24,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:24,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:24,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:24,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:07:24,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:07:24,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:24,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:24,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:24,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:24,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:24,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:07:24,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:24,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:24,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:07:24,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:24,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:24,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:07:24,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:07:24,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572472824] [2020-10-29 04:07:24,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:07:24,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 04:07:24,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033875566] [2020-10-29 04:07:24,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:07:24,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:07:24,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:07:24,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:07:24,827 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand 4 states. [2020-10-29 04:07:24,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:07:24,940 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2020-10-29 04:07:24,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 04:07:24,941 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-29 04:07:24,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:07:24,942 INFO L225 Difference]: With dead ends: 85 [2020-10-29 04:07:24,942 INFO L226 Difference]: Without dead ends: 56 [2020-10-29 04:07:24,943 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 [2020-10-29 04:07:24,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-29 04:07:24,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-29 04:07:24,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-29 04:07:24,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2020-10-29 04:07:24,954 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 33 [2020-10-29 04:07:24,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:07:24,954 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2020-10-29 04:07:24,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:07:24,955 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2020-10-29 04:07:24,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 04:07:24,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:24,956 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] [2020-10-29 04:07:24,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 04:07:24,957 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:24,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:24,957 INFO L82 PathProgramCache]: Analyzing trace with hash 53712394, now seen corresponding path program 1 times [2020-10-29 04:07:24,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:24,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506423880] [2020-10-29 04:07:24,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:24,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:25,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:25,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:25,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:25,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:27,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:27,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 04:07:27,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:07:27,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2480 [2020-10-29 04:07:27,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:27,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:27,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 04:07:27,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:07:27,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 04:07:27,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 04:07:27,686 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 23 [2020-10-29 04:07:28,081 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2020-10-29 04:07:28,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:07:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:28,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:28,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:28,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:07:28,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:28,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:07:28,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:28,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:28,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:28,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:28,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:28,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:28,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:07:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:28,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:28,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:28,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:28,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:28,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:07:28,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:28,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:28,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:07:28,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:28,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:28,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:28,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:07:28,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506423880] [2020-10-29 04:07:28,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:07:28,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 04:07:28,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164175723] [2020-10-29 04:07:28,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 04:07:28,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:07:28,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 04:07:28,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-29 04:07:28,394 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 13 states. [2020-10-29 04:07:29,669 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2020-10-29 04:07:30,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:07:30,100 INFO L93 Difference]: Finished difference Result 117 states and 142 transitions. [2020-10-29 04:07:30,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 04:07:30,102 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2020-10-29 04:07:30,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:07:30,105 INFO L225 Difference]: With dead ends: 117 [2020-10-29 04:07:30,105 INFO L226 Difference]: Without dead ends: 76 [2020-10-29 04:07:30,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=217, Invalid=539, Unknown=0, NotChecked=0, Total=756 [2020-10-29 04:07:30,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-29 04:07:30,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 50. [2020-10-29 04:07:30,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-29 04:07:30,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-10-29 04:07:30,130 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 33 [2020-10-29 04:07:30,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:07:30,131 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-10-29 04:07:30,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 04:07:30,132 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-10-29 04:07:30,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 04:07:30,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:30,134 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:07:30,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 04:07:30,136 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:30,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:30,137 INFO L82 PathProgramCache]: Analyzing trace with hash -131466877, now seen corresponding path program 2 times [2020-10-29 04:07:30,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:30,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849231387] [2020-10-29 04:07:30,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:30,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:30,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:31,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:31,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 04:07:31,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:07:31,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1428 [2020-10-29 04:07:31,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:31,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:31,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 04:07:31,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:07:31,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 04:07:31,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:31,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:07:31,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:31,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:31,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:31,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:07:31,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:31,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:07:31,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:31,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:31,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:31,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:31,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:31,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:31,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:07:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:31,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:31,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:31,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:31,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:31,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:07:31,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:31,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:31,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:31,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:31,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:31,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:31,779 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 04:07:31,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849231387] [2020-10-29 04:07:31,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:07:31,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:07:31,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230455415] [2020-10-29 04:07:31,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:07:31,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:07:31,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:07:31,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:07:31,782 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 8 states. [2020-10-29 04:07:32,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:07:32,100 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2020-10-29 04:07:32,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 04:07:32,102 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2020-10-29 04:07:32,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:07:32,103 INFO L225 Difference]: With dead ends: 76 [2020-10-29 04:07:32,103 INFO L226 Difference]: Without dead ends: 59 [2020-10-29 04:07:32,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:07:32,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-29 04:07:32,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 45. [2020-10-29 04:07:32,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 04:07:32,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-10-29 04:07:32,115 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 37 [2020-10-29 04:07:32,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:07:32,116 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-10-29 04:07:32,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:07:32,116 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-10-29 04:07:32,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 04:07:32,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:32,118 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] [2020-10-29 04:07:32,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 04:07:32,118 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:32,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:32,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1402336943, now seen corresponding path program 1 times [2020-10-29 04:07:32,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:32,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169350010] [2020-10-29 04:07:32,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:32,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:32,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:32,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:32,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:32,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:32,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:34,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:34,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 04:07:34,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 04:07:34,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2684 [2020-10-29 04:07:34,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:34,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:34,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 04:07:34,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:07:34,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 04:07:34,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:35,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:07:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:35,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:35,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:35,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:07:35,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:35,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:07:35,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:35,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:35,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:35,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:35,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:35,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:35,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:07:35,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:35,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:35,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:35,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:35,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:35,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:07:35,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:35,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:35,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:35,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:35,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:35,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 04:07:35,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 04:07:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:35,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:35,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:35,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:35,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:35,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:07:35,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:35,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:35,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:07:35,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:35,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:35,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:35,176 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:07:35,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169350010] [2020-10-29 04:07:35,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:07:35,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 04:07:35,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115023062] [2020-10-29 04:07:35,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 04:07:35,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:07:35,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 04:07:35,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-10-29 04:07:35,179 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 15 states. [2020-10-29 04:07:36,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:07:36,484 INFO L93 Difference]: Finished difference Result 113 states and 127 transitions. [2020-10-29 04:07:36,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 04:07:36,486 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 42 [2020-10-29 04:07:36,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:07:36,488 INFO L225 Difference]: With dead ends: 113 [2020-10-29 04:07:36,488 INFO L226 Difference]: Without dead ends: 110 [2020-10-29 04:07:36,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=203, Invalid=987, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 04:07:36,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-29 04:07:36,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 86. [2020-10-29 04:07:36,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-29 04:07:36,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2020-10-29 04:07:36,526 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 42 [2020-10-29 04:07:36,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:07:36,527 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2020-10-29 04:07:36,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 04:07:36,527 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2020-10-29 04:07:36,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 04:07:36,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:36,536 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] [2020-10-29 04:07:36,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 04:07:36,536 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:36,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:36,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1328906154, now seen corresponding path program 2 times [2020-10-29 04:07:36,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:36,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371163313] [2020-10-29 04:07:36,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:36,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:36,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:36,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:36,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:36,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:38,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:38,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:39,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:41,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:41,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 04:07:41,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 04:07:41,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 04:07:41,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:41,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:41,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:07:41,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:07:41,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 04:07:41,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:41,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:07:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:41,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:41,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:41,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:07:41,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:41,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:07:41,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:41,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:41,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:41,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:41,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:41,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:41,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:07:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:41,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:41,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:41,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:41,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:41,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 04:07:41,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:41,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:41,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:07:41,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:41,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:41,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:41,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 04:07:41,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:41,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:41,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:41,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:41,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:41,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:07:41,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:41,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:41,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:07:41,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:41,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:41,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:41,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 04:07:41,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:41,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:41,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:41,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:41,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:41,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:07:41,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:41,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:41,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:41,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:07:41,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:41,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:41,826 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 04:07:41,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371163313] [2020-10-29 04:07:41,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:07:41,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 04:07:41,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946226029] [2020-10-29 04:07:41,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 04:07:41,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:07:41,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 04:07:41,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:07:41,830 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand 10 states. [2020-10-29 04:07:42,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:07:42,244 INFO L93 Difference]: Finished difference Result 130 states and 146 transitions. [2020-10-29 04:07:42,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:07:42,245 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2020-10-29 04:07:42,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:07:42,247 INFO L225 Difference]: With dead ends: 130 [2020-10-29 04:07:42,247 INFO L226 Difference]: Without dead ends: 99 [2020-10-29 04:07:42,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-29 04:07:42,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-29 04:07:42,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 91. [2020-10-29 04:07:42,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-29 04:07:42,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 101 transitions. [2020-10-29 04:07:42,267 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 101 transitions. Word has length 51 [2020-10-29 04:07:42,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:07:42,268 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 101 transitions. [2020-10-29 04:07:42,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 04:07:42,268 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 101 transitions. [2020-10-29 04:07:42,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 04:07:42,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:42,269 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] [2020-10-29 04:07:42,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 04:07:42,269 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:42,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:42,270 INFO L82 PathProgramCache]: Analyzing trace with hash 49042476, now seen corresponding path program 3 times [2020-10-29 04:07:42,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:42,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636668300] [2020-10-29 04:07:42,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:42,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:42,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:42,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:42,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:44,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:44,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 04:07:44,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:07:44,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2219 [2020-10-29 04:07:44,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:44,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:44,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:07:44,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:07:44,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 04:07:44,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:44,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:07:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:44,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:44,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:44,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:07:44,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:44,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:07:44,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:44,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:44,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:44,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:44,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:44,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:44,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:07:44,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:44,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:44,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:44,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:44,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:44,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:07:44,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 04:07:44,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:44,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:44,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:07:44,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:44,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:44,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:44,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 04:07:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:44,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:44,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:44,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:44,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:44,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:07:44,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:44,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:44,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:07:44,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:44,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:44,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:44,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 04:07:44,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:44,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:44,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:44,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:44,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:44,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:07:44,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:44,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:44,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:07:44,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:44,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:44,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:07:44,764 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 04:07:44,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636668300] [2020-10-29 04:07:44,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:07:44,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 04:07:44,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338943023] [2020-10-29 04:07:44,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 04:07:44,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:07:44,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 04:07:44,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:07:44,773 INFO L87 Difference]: Start difference. First operand 91 states and 101 transitions. Second operand 10 states. [2020-10-29 04:07:45,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:07:45,588 INFO L93 Difference]: Finished difference Result 113 states and 122 transitions. [2020-10-29 04:07:45,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 04:07:45,589 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2020-10-29 04:07:45,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:07:45,590 INFO L225 Difference]: With dead ends: 113 [2020-10-29 04:07:45,590 INFO L226 Difference]: Without dead ends: 67 [2020-10-29 04:07:45,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-10-29 04:07:45,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-29 04:07:45,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 58. [2020-10-29 04:07:45,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-29 04:07:45,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2020-10-29 04:07:45,616 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 51 [2020-10-29 04:07:45,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:07:45,616 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2020-10-29 04:07:45,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 04:07:45,617 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2020-10-29 04:07:45,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 04:07:45,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:45,620 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 04:07:45,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 04:07:45,621 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:45,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:45,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1290512261, now seen corresponding path program 4 times [2020-10-29 04:07:45,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:45,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811529358] [2020-10-29 04:07:45,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:45,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:45,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:45,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:46,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:46,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:46,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:47,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:48,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:48,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 04:07:48,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 04:07:48,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2797 [2020-10-29 04:07:48,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:48,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:48,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 04:07:48,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:07:48,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 04:07:48,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:48,969 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-29 04:07:49,137 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-10-29 04:07:49,325 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-29 04:07:49,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:07:49,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:49,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:49,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:49,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:07:49,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:49,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:07:49,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:49,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:49,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:49,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:49,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:49,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:49,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:07:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:49,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:49,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:49,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:49,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:49,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:07:49,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:49,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:49,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:49,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:49,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:49,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:49,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 04:07:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:49,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:49,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:49,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:49,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:49,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:07:49,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:49,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:49,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:07:49,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:49,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:49,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:49,608 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:07:49,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811529358] [2020-10-29 04:07:49,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:07:49,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 04:07:49,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081809533] [2020-10-29 04:07:49,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 04:07:49,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:07:49,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 04:07:49,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2020-10-29 04:07:49,611 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 19 states. [2020-10-29 04:07:53,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:07:53,292 INFO L93 Difference]: Finished difference Result 133 states and 144 transitions. [2020-10-29 04:07:53,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-29 04:07:53,293 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 50 [2020-10-29 04:07:53,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:07:53,294 INFO L225 Difference]: With dead ends: 133 [2020-10-29 04:07:53,295 INFO L226 Difference]: Without dead ends: 130 [2020-10-29 04:07:53,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 766 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=475, Invalid=2717, Unknown=0, NotChecked=0, Total=3192 [2020-10-29 04:07:53,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-29 04:07:53,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 63. [2020-10-29 04:07:53,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-29 04:07:53,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-29 04:07:53,328 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 50 [2020-10-29 04:07:53,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:07:53,329 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-29 04:07:53,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 04:07:53,330 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-29 04:07:53,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 04:07:53,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:53,331 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:07:53,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 04:07:53,332 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:53,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:53,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1349437472, now seen corresponding path program 5 times [2020-10-29 04:07:53,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:53,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059064674] [2020-10-29 04:07:53,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:53,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:53,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:53,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:53,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:53,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:54,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:55,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:58,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:58,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 04:07:58,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 04:07:58,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 04:07:58,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:58,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:58,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 04:07:58,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:07:58,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 04:07:58,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:07:58,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:07:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:58,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:58,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:58,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:07:58,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:58,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:07:58,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:58,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:58,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:58,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:58,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:58,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:58,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:07:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:58,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:58,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:58,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:58,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:58,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:07:58,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:58,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:58,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:58,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:58,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:58,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:58,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 04:07:58,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:58,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:58,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:58,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:58,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:58,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:07:58,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:58,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:58,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:07:58,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:58,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:58,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:58,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 04:07:58,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:58,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:58,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:58,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:58,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:58,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:07:58,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:58,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:58,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:07:58,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:58,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:58,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:07:58,622 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 04:07:58,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059064674] [2020-10-29 04:07:58,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:07:58,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 04:07:58,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962251185] [2020-10-29 04:07:58,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 04:07:58,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:07:58,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 04:07:58,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:07:58,628 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 11 states. [2020-10-29 04:07:59,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:07:59,219 INFO L93 Difference]: Finished difference Result 94 states and 101 transitions. [2020-10-29 04:07:59,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 04:07:59,220 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2020-10-29 04:07:59,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:07:59,221 INFO L225 Difference]: With dead ends: 94 [2020-10-29 04:07:59,221 INFO L226 Difference]: Without dead ends: 77 [2020-10-29 04:07:59,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2020-10-29 04:07:59,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-29 04:07:59,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 67. [2020-10-29 04:07:59,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-29 04:07:59,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-29 04:07:59,235 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 59 [2020-10-29 04:07:59,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:07:59,236 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-29 04:07:59,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 04:07:59,236 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-29 04:07:59,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 04:07:59,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:59,237 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:07:59,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 04:07:59,238 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:59,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:59,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1520302695, now seen corresponding path program 6 times [2020-10-29 04:07:59,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:59,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023622823] [2020-10-29 04:07:59,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:59,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:59,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:59,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:59,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:59,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:59,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:00,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:03,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:03,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:03,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:03,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 04:08:03,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 04:08:03,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4536 [2020-10-29 04:08:03,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:03,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:03,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 04:08:03,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 04:08:03,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 04:08:03,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:04,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:08:04,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:04,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:04,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:04,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:08:04,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:04,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:08:04,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:04,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:04,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:04,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:04,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:04,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:04,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:08:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:04,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:04,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:04,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:04,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:04,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:08:04,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:04,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:04,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:04,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:04,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:04,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:04,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 04:08:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:04,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:04,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:04,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:04,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:04,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:04,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:04,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:04,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:04,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:04,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:04,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:04,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 04:08:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:04,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:04,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:04,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:04,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:04,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:04,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:04,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:04,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:04,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:04,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:04,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:04,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 04:08:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:04,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:04,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:04,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:04,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:04,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:04,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:04,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:04,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:04,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:04,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:04,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:04,066 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-29 04:08:04,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023622823] [2020-10-29 04:08:04,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:08:04,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 04:08:04,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925331710] [2020-10-29 04:08:04,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 04:08:04,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:08:04,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 04:08:04,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-29 04:08:04,069 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 14 states. [2020-10-29 04:08:04,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:08:04,997 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2020-10-29 04:08:04,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 04:08:04,998 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 68 [2020-10-29 04:08:04,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:08:04,999 INFO L225 Difference]: With dead ends: 95 [2020-10-29 04:08:04,999 INFO L226 Difference]: Without dead ends: 92 [2020-10-29 04:08:05,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2020-10-29 04:08:05,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-29 04:08:05,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 77. [2020-10-29 04:08:05,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-29 04:08:05,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2020-10-29 04:08:05,026 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 68 [2020-10-29 04:08:05,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:08:05,039 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2020-10-29 04:08:05,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 04:08:05,040 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2020-10-29 04:08:05,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-29 04:08:05,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:08:05,041 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 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] [2020-10-29 04:08:05,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 04:08:05,041 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:08:05,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:08:05,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1841653760, now seen corresponding path program 7 times [2020-10-29 04:08:05,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:08:05,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549364953] [2020-10-29 04:08:05,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:08:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:05,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:05,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:05,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:05,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:05,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:05,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:06,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:06,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:10,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:10,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 04:08:10,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 04:08:10,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 04:08:10,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:10,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:10,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 04:08:10,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:08:10,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 04:08:10,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:10,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:08:10,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:10,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:10,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:10,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:08:10,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:10,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:08:10,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:10,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:10,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:10,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:10,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:10,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:10,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:08:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:10,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:10,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:10,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:10,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:10,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:08:10,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:10,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:10,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:10,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:10,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:10,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:08:10,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 04:08:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:10,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:10,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:10,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:10,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:10,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:08:10,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:10,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:10,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:10,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:10,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:10,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:10,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 04:08:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:10,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:10,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:10,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:10,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:10,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:08:10,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:10,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:10,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:10,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:10,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:10,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:10,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 04:08:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:10,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:10,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:10,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:10,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:10,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:08:10,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:10,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:10,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:10,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:10,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:10,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:08:10,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 04:08:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:10,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:10,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:10,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:10,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:10,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:08:10,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:10,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:10,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:10,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:08:10,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:10,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:08:10,352 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 28 proven. 27 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-29 04:08:10,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549364953] [2020-10-29 04:08:10,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:08:10,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 04:08:10,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875160236] [2020-10-29 04:08:10,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 04:08:10,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:08:10,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 04:08:10,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-29 04:08:10,363 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand 13 states. [2020-10-29 04:08:11,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:08:11,050 INFO L93 Difference]: Finished difference Result 107 states and 115 transitions. [2020-10-29 04:08:11,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 04:08:11,051 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 77 [2020-10-29 04:08:11,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:08:11,052 INFO L225 Difference]: With dead ends: 107 [2020-10-29 04:08:11,052 INFO L226 Difference]: Without dead ends: 90 [2020-10-29 04:08:11,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:08:11,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-29 04:08:11,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 77. [2020-10-29 04:08:11,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-29 04:08:11,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2020-10-29 04:08:11,073 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 77 [2020-10-29 04:08:11,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:08:11,073 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2020-10-29 04:08:11,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 04:08:11,073 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2020-10-29 04:08:11,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-29 04:08:11,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:08:11,078 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 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] [2020-10-29 04:08:11,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 04:08:11,079 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:08:11,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:08:11,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1173449858, now seen corresponding path program 8 times [2020-10-29 04:08:11,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:08:11,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530881623] [2020-10-29 04:08:11,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:08:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:11,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:11,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:11,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:11,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:14,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:14,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 04:08:14,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:08:14,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3710 [2020-10-29 04:08:14,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:14,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:14,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 04:08:14,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:08:14,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 04:08:14,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:15,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:08:15,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:15,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:15,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:15,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:08:15,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:15,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:08:15,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:15,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:15,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:15,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:15,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:15,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:15,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:08:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:15,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:15,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:15,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:15,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:15,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:08:15,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:08:15,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:15,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:15,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:15,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:15,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:15,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:08:15,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 04:08:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:15,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:15,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:15,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:15,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:15,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:08:15,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:15,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:15,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:15,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:15,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:15,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:15,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 04:08:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:15,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:15,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:15,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:15,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:15,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:08:15,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:15,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:15,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:15,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:15,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:15,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:08:15,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 04:08:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:15,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:15,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:15,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:15,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:15,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:08:15,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:15,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:15,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:15,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:15,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:15,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 04:08:15,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 04:08:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:15,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:15,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:15,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:15,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:15,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:08:15,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:15,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:15,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:15,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:15,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:15,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:08:15,273 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 28 proven. 28 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-29 04:08:15,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530881623] [2020-10-29 04:08:15,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:08:15,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 04:08:15,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073477551] [2020-10-29 04:08:15,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 04:08:15,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:08:15,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 04:08:15,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-29 04:08:15,275 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 13 states. [2020-10-29 04:08:17,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:08:17,115 INFO L93 Difference]: Finished difference Result 182 states and 196 transitions. [2020-10-29 04:08:17,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 04:08:17,119 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 77 [2020-10-29 04:08:17,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:08:17,120 INFO L225 Difference]: With dead ends: 182 [2020-10-29 04:08:17,120 INFO L226 Difference]: Without dead ends: 91 [2020-10-29 04:08:17,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=263, Invalid=729, Unknown=0, NotChecked=0, Total=992 [2020-10-29 04:08:17,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-29 04:08:17,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 85. [2020-10-29 04:08:17,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-29 04:08:17,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2020-10-29 04:08:17,138 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 77 [2020-10-29 04:08:17,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:08:17,138 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2020-10-29 04:08:17,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 04:08:17,139 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2020-10-29 04:08:17,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-29 04:08:17,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:08:17,140 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:08:17,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 04:08:17,140 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:08:17,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:08:17,141 INFO L82 PathProgramCache]: Analyzing trace with hash 631498294, now seen corresponding path program 9 times [2020-10-29 04:08:17,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:08:17,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333722411] [2020-10-29 04:08:17,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:08:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:17,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:17,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:17,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:17,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:18,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:18,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:18,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:19,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:19,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:19,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:22,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:22,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 04:08:22,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 04:08:22,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 04:08:22,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:22,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:22,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 04:08:22,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:08:22,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 04:08:22,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:22,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:08:22,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:22,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:22,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:22,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:08:22,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:22,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:08:22,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:22,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:22,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:22,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:22,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:22,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:22,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:08:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:22,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:22,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:22,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:22,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:22,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:22,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:22,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:22,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:22,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:22,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:22,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:22,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 04:08:22,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:22,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:22,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:22,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:22,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:22,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:08:22,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:22,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:22,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:22,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:22,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:22,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:22,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 04:08:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:22,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:22,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:22,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:22,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:22,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:08:22,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:22,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:22,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:22,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:22,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:22,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:22,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 04:08:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:22,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:22,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:22,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:22,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:22,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:22,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:22,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:22,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:22,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:22,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:22,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:22,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 04:08:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:22,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:22,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:22,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:22,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:22,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:08:22,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:22,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:22,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:22,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:22,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:22,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 04:08:22,555 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 12 proven. 53 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-29 04:08:22,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333722411] [2020-10-29 04:08:22,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:08:22,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 04:08:22,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799731882] [2020-10-29 04:08:22,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 04:08:22,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:08:22,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 04:08:22,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-29 04:08:22,559 INFO L87 Difference]: Start difference. First operand 85 states and 90 transitions. Second operand 14 states. [2020-10-29 04:08:23,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:08:23,621 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-10-29 04:08:23,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 04:08:23,622 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 85 [2020-10-29 04:08:23,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:08:23,623 INFO L225 Difference]: With dead ends: 124 [2020-10-29 04:08:23,624 INFO L226 Difference]: Without dead ends: 107 [2020-10-29 04:08:23,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2020-10-29 04:08:23,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-29 04:08:23,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 89. [2020-10-29 04:08:23,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-29 04:08:23,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 94 transitions. [2020-10-29 04:08:23,650 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 94 transitions. Word has length 85 [2020-10-29 04:08:23,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:08:23,650 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 94 transitions. [2020-10-29 04:08:23,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 04:08:23,650 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 94 transitions. [2020-10-29 04:08:23,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 04:08:23,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:08:23,651 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 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] [2020-10-29 04:08:23,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 04:08:23,652 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:08:23,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:08:23,652 INFO L82 PathProgramCache]: Analyzing trace with hash -551610365, now seen corresponding path program 10 times [2020-10-29 04:08:23,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:08:23,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416812634] [2020-10-29 04:08:23,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:08:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:23,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:23,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:23,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:23,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:24,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:25,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:25,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:25,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:26,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:26,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:28,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:28,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 04:08:28,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 04:08:28,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 04:08:28,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:28,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:28,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 04:08:28,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-29 04:08:28,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 04:08:28,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:28,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:08:28,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:28,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:28,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:28,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:08:28,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:28,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:28,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:28,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:28,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:28,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:28,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:28,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:28,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:08:28,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:28,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:28,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:28,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:28,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:28,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:08:28,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:28,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:28,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:28,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:28,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:28,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:28,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 04:08:28,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:29,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:29,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:29,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:29,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:29,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:08:29,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:29,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:29,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:29,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:29,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:29,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:29,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 04:08:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:29,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:29,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:29,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:29,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:29,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:08:29,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:29,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:29,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:29,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:29,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:29,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:29,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 04:08:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:29,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:29,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:29,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:29,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:29,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:29,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:29,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:29,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:29,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:29,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:29,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:29,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 04:08:29,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:29,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:29,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:29,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:29,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:29,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:29,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:29,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:29,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:29,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:29,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:29,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:29,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 04:08:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:29,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:29,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:29,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:29,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:29,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:29,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:29,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:29,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:29,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:29,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:29,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:29,048 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 10 proven. 80 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-10-29 04:08:29,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416812634] [2020-10-29 04:08:29,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:08:29,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 04:08:29,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261914006] [2020-10-29 04:08:29,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 04:08:29,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:08:29,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 04:08:29,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:08:29,051 INFO L87 Difference]: Start difference. First operand 89 states and 94 transitions. Second operand 17 states. [2020-10-29 04:08:30,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:08:30,565 INFO L93 Difference]: Finished difference Result 122 states and 132 transitions. [2020-10-29 04:08:30,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 04:08:30,566 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 94 [2020-10-29 04:08:30,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:08:30,567 INFO L225 Difference]: With dead ends: 122 [2020-10-29 04:08:30,567 INFO L226 Difference]: Without dead ends: 119 [2020-10-29 04:08:30,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=123, Invalid=999, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 04:08:30,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-29 04:08:30,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 99. [2020-10-29 04:08:30,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-29 04:08:30,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 106 transitions. [2020-10-29 04:08:30,586 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 106 transitions. Word has length 94 [2020-10-29 04:08:30,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:08:30,587 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 106 transitions. [2020-10-29 04:08:30,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 04:08:30,587 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 106 transitions. [2020-10-29 04:08:30,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 04:08:30,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:08:30,588 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 4, 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] [2020-10-29 04:08:30,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 04:08:30,589 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:08:30,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:08:30,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1299881174, now seen corresponding path program 11 times [2020-10-29 04:08:30,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:08:30,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300264966] [2020-10-29 04:08:30,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:08:30,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:30,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:30,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:30,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:31,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:31,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:31,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:31,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:31,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:35,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:35,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 04:08:35,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 04:08:35,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 04:08:35,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:35,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:35,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 04:08:35,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:08:35,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 04:08:35,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:35,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:08:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:35,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:35,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:35,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:08:35,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:35,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:35,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:35,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:35,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:35,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:35,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:35,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:35,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:08:35,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:35,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:35,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:35,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:35,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:35,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:08:35,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:35,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:35,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:35,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:35,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:35,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:35,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 04:08:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:35,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:35,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:35,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:35,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:35,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:35,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:35,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:35,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:35,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:35,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:35,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:35,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 04:08:35,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:35,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:35,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:35,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:35,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:35,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:35,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:35,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:35,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:35,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:35,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:35,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:35,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 04:08:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:35,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:35,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:35,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:35,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:35,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:35,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:35,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:35,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:35,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:35,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:35,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:35,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 04:08:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:35,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:35,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:35,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:35,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:35,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:35,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:35,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:35,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:35,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:35,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:35,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:35,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 04:08:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:35,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:35,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:35,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:35,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:35,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:35,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:35,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:35,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:35,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:35,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:35,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:35,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-29 04:08:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:36,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:36,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:36,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:36,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:36,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:08:36,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:36,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:36,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:36,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:08:36,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:36,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:36,028 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 44 proven. 75 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-29 04:08:36,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300264966] [2020-10-29 04:08:36,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:08:36,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 04:08:36,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275640829] [2020-10-29 04:08:36,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 04:08:36,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:08:36,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 04:08:36,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-10-29 04:08:36,031 INFO L87 Difference]: Start difference. First operand 99 states and 106 transitions. Second operand 16 states. [2020-10-29 04:08:37,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:08:37,317 INFO L93 Difference]: Finished difference Result 134 states and 144 transitions. [2020-10-29 04:08:37,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 04:08:37,318 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 103 [2020-10-29 04:08:37,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:08:37,320 INFO L225 Difference]: With dead ends: 134 [2020-10-29 04:08:37,320 INFO L226 Difference]: Without dead ends: 117 [2020-10-29 04:08:37,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2020-10-29 04:08:37,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-29 04:08:37,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 99. [2020-10-29 04:08:37,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-29 04:08:37,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 105 transitions. [2020-10-29 04:08:37,338 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 105 transitions. Word has length 103 [2020-10-29 04:08:37,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:08:37,338 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 105 transitions. [2020-10-29 04:08:37,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 04:08:37,339 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 105 transitions. [2020-10-29 04:08:37,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 04:08:37,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:08:37,340 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 4, 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] [2020-10-29 04:08:37,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 04:08:37,340 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:08:37,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:08:37,341 INFO L82 PathProgramCache]: Analyzing trace with hash 20017496, now seen corresponding path program 12 times [2020-10-29 04:08:37,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:08:37,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911186707] [2020-10-29 04:08:37,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:08:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:37,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:37,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:37,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:38,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:42,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:42,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 04:08:42,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:08:42,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 04:08:42,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:42,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:42,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 04:08:42,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:08:42,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 04:08:42,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:42,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:08:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:42,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:42,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:42,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:08:42,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:42,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:08:42,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:42,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:42,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:42,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:42,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:42,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:42,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:08:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:42,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:42,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:42,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:42,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:42,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:08:42,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:08:42,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:42,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:42,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:42,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:42,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:42,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:42,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 04:08:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:42,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:42,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:42,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:42,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:42,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:08:42,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:42,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:42,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:42,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:42,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:42,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 04:08:42,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 04:08:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:42,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:42,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:42,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:42,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:42,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:08:42,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:42,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:42,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:42,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:42,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:42,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 04:08:42,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 04:08:42,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:42,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:42,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:42,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:42,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:42,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:08:42,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:42,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:42,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:42,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:42,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:42,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:42,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 04:08:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:42,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:42,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:42,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:42,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:42,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:08:42,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:42,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:42,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:42,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:42,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:42,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:42,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 04:08:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:42,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:42,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:42,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:42,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:42,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:08:42,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:42,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:42,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:42,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:42,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:42,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:42,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-29 04:08:42,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:42,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:42,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:42,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:42,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:42,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:08:42,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:42,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:42,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:42,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:42,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:42,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:42,858 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 105 proven. 15 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-29 04:08:42,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911186707] [2020-10-29 04:08:42,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:08:42,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 04:08:42,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610642744] [2020-10-29 04:08:42,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 04:08:42,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:08:42,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 04:08:42,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-10-29 04:08:42,860 INFO L87 Difference]: Start difference. First operand 99 states and 105 transitions. Second operand 16 states. [2020-10-29 04:08:44,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:08:44,613 INFO L93 Difference]: Finished difference Result 262 states and 284 transitions. [2020-10-29 04:08:44,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 04:08:44,613 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 103 [2020-10-29 04:08:44,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:08:44,615 INFO L225 Difference]: With dead ends: 262 [2020-10-29 04:08:44,615 INFO L226 Difference]: Without dead ends: 113 [2020-10-29 04:08:44,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=566, Invalid=1504, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 04:08:44,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-29 04:08:44,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2020-10-29 04:08:44,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-29 04:08:44,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 113 transitions. [2020-10-29 04:08:44,633 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 113 transitions. Word has length 103 [2020-10-29 04:08:44,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:08:44,634 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 113 transitions. [2020-10-29 04:08:44,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 04:08:44,634 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 113 transitions. [2020-10-29 04:08:44,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-29 04:08:44,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:08:44,635 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:08:44,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 04:08:44,635 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:08:44,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:08:44,636 INFO L82 PathProgramCache]: Analyzing trace with hash 702333196, now seen corresponding path program 13 times [2020-10-29 04:08:44,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:08:44,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202481324] [2020-10-29 04:08:44,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:08:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:44,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:44,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:44,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:45,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:45,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:46,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:47,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:48,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:48,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:49,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:49,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 04:08:49,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 04:08:49,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 04:08:49,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:49,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:49,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 04:08:49,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:08:49,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 04:08:49,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:50,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:08:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:50,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:50,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:50,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:08:50,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:50,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:08:50,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:50,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:50,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:50,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:50,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:50,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:50,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:08:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:50,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:50,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:50,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:50,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:50,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:08:50,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:50,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:50,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:50,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:50,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:50,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:50,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 04:08:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:50,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:50,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:50,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:50,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:50,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:50,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:50,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:50,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:50,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:50,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:50,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:50,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 04:08:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:50,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:50,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:50,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:50,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:50,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:50,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:50,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:50,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:50,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:50,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:50,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:50,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 04:08:50,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:50,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:50,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:50,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:50,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:50,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:50,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:50,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:50,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:50,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:50,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:50,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:50,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 04:08:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:50,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:50,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:50,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:50,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:50,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:50,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:50,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:50,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:50,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:50,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:50,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:50,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-29 04:08:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:50,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:50,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:50,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:50,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:50,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:50,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:50,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:50,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:50,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:50,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:50,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:50,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-29 04:08:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:50,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:50,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:50,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:50,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:50,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:50,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:50,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:50,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:50,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:50,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:50,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:50,153 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 18 proven. 115 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-29 04:08:50,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202481324] [2020-10-29 04:08:50,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:08:50,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 04:08:50,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124619689] [2020-10-29 04:08:50,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 04:08:50,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:08:50,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 04:08:50,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:08:50,157 INFO L87 Difference]: Start difference. First operand 107 states and 113 transitions. Second operand 17 states. [2020-10-29 04:08:51,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:08:51,885 INFO L93 Difference]: Finished difference Result 151 states and 163 transitions. [2020-10-29 04:08:51,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 04:08:51,886 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 111 [2020-10-29 04:08:51,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:08:51,888 INFO L225 Difference]: With dead ends: 151 [2020-10-29 04:08:51,888 INFO L226 Difference]: Without dead ends: 134 [2020-10-29 04:08:51,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=135, Invalid=1125, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 04:08:51,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-29 04:08:51,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 111. [2020-10-29 04:08:51,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-29 04:08:51,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 117 transitions. [2020-10-29 04:08:51,905 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 117 transitions. Word has length 111 [2020-10-29 04:08:51,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:08:51,906 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 117 transitions. [2020-10-29 04:08:51,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 04:08:51,906 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 117 transitions. [2020-10-29 04:08:51,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-29 04:08:51,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:08:51,908 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 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] [2020-10-29 04:08:51,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 04:08:51,908 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:08:51,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:08:51,908 INFO L82 PathProgramCache]: Analyzing trace with hash -643822099, now seen corresponding path program 14 times [2020-10-29 04:08:51,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:08:51,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922874152] [2020-10-29 04:08:51,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:08:51,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:51,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:52,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:52,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:52,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:52,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:52,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:53,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:55,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:55,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:55,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:56,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:56,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 04:08:56,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 04:08:56,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 04:08:56,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:56,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:56,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 04:08:56,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-29 04:08:56,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 04:08:56,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:57,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:08:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:57,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:57,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:57,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:08:57,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:57,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:08:57,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:57,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:57,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:57,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:57,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:57,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:57,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:08:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:57,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:57,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:57,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:57,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:57,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:08:57,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:57,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:57,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:57,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:57,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:57,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:57,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 04:08:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:57,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:57,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:57,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:57,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:57,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:57,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:57,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:57,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:57,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:57,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:57,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:57,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 04:08:57,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:57,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:57,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:57,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:57,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:57,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:57,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:57,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:57,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:57,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:57,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:57,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:57,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 04:08:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:57,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:57,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:57,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:57,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:57,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:08:57,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:57,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:57,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:57,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:57,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:57,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:57,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 04:08:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:57,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:57,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:57,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:57,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:57,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:08:57,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:57,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:57,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:57,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:57,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:57,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:57,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-29 04:08:57,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:57,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:57,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:57,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:57,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:57,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:08:57,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:57,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:57,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:57,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:57,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:57,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:57,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-29 04:08:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:57,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:57,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:57,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:57,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:57,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:57,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:57,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:57,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:57,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:57,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:57,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:57,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-29 04:08:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:57,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:57,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:57,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:57,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:57,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:57,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:57,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:57,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:57,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:57,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:57,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:57,405 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 14 proven. 154 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-29 04:08:57,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922874152] [2020-10-29 04:08:57,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:08:57,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 04:08:57,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762918788] [2020-10-29 04:08:57,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 04:08:57,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:08:57,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 04:08:57,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-29 04:08:57,408 INFO L87 Difference]: Start difference. First operand 111 states and 117 transitions. Second operand 20 states. [2020-10-29 04:08:59,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:08:59,635 INFO L93 Difference]: Finished difference Result 149 states and 161 transitions. [2020-10-29 04:08:59,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 04:08:59,635 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 120 [2020-10-29 04:08:59,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:08:59,638 INFO L225 Difference]: With dead ends: 149 [2020-10-29 04:08:59,639 INFO L226 Difference]: Without dead ends: 146 [2020-10-29 04:08:59,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=166, Invalid=1726, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 04:08:59,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-29 04:08:59,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 121. [2020-10-29 04:08:59,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-29 04:08:59,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 129 transitions. [2020-10-29 04:08:59,660 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 129 transitions. Word has length 120 [2020-10-29 04:08:59,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:08:59,661 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 129 transitions. [2020-10-29 04:08:59,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 04:08:59,661 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 129 transitions. [2020-10-29 04:08:59,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-29 04:08:59,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:08:59,662 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 5, 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] [2020-10-29 04:08:59,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 04:08:59,663 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:08:59,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:08:59,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1218531796, now seen corresponding path program 15 times [2020-10-29 04:08:59,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:08:59,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558949675] [2020-10-29 04:08:59,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:08:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:59,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:59,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:59,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:01,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:01,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:01,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:01,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:04,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:04,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:04,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-29 04:09:04,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 04:09:04,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 04:09:04,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:04,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:04,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 04:09:04,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:09:04,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-29 04:09:04,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:05,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:09:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:05,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:05,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:05,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:09:05,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:05,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:09:05,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:05,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:05,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:05,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:05,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:05,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:05,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:09:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:05,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:05,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:05,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:05,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:05,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:09:05,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:09:05,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:05,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:05,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:05,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:05,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:05,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:05,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 04:09:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:05,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:05,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:05,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:05,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:05,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:05,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:05,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:05,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:05,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:05,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:05,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:05,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 04:09:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:05,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:05,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:05,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:05,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:05,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:05,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:05,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:05,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:05,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:05,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:05,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:05,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 04:09:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:05,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:05,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:05,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:05,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:05,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:05,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:05,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:05,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:05,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:05,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:05,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:05,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 04:09:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:05,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:05,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:05,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:05,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:05,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:05,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:05,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:05,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:05,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:05,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:05,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:05,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-29 04:09:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:05,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:05,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:05,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:05,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:05,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:05,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:05,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:05,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:05,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:05,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:05,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:05,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-29 04:09:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:05,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:05,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:05,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:05,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:05,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:05,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:05,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:05,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:05,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:05,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:05,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:05,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-29 04:09:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:05,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:05,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:05,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:05,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:05,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:05,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:05,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:05,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:05,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:05,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:05,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:05,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-29 04:09:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:05,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:05,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:05,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:05,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:05,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:05,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:05,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:05,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:05,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:05,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:05,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:05,082 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 180 proven. 28 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2020-10-29 04:09:05,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558949675] [2020-10-29 04:09:05,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:09:05,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 04:09:05,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788881990] [2020-10-29 04:09:05,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 04:09:05,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:09:05,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 04:09:05,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2020-10-29 04:09:05,085 INFO L87 Difference]: Start difference. First operand 121 states and 129 transitions. Second operand 19 states. [2020-10-29 04:09:07,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:09:07,605 INFO L93 Difference]: Finished difference Result 353 states and 389 transitions. [2020-10-29 04:09:07,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-29 04:09:07,606 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 129 [2020-10-29 04:09:07,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:09:07,607 INFO L225 Difference]: With dead ends: 353 [2020-10-29 04:09:07,607 INFO L226 Difference]: Without dead ends: 135 [2020-10-29 04:09:07,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 944 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=968, Invalid=2572, Unknown=0, NotChecked=0, Total=3540 [2020-10-29 04:09:07,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-29 04:09:07,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 129. [2020-10-29 04:09:07,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-29 04:09:07,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 137 transitions. [2020-10-29 04:09:07,626 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 137 transitions. Word has length 129 [2020-10-29 04:09:07,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:09:07,626 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 137 transitions. [2020-10-29 04:09:07,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 04:09:07,626 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 137 transitions. [2020-10-29 04:09:07,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-29 04:09:07,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:09:07,628 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:09:07,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 04:09:07,628 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:09:07,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:09:07,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1228008480, now seen corresponding path program 16 times [2020-10-29 04:09:07,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:09:07,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709591919] [2020-10-29 04:09:07,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:09:07,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:07,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:07,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:08,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:08,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:08,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:10,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:11,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:12,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:12,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-29 04:09:12,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 04:09:12,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 04:09:12,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:12,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:12,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 04:09:12,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:09:12,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-29 04:09:12,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:13,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:09:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:13,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:13,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:13,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:09:13,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:13,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:09:13,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:13,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:13,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:13,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:13,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:13,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:13,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:09:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:13,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:13,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:13,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:13,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:13,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:13,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:13,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:13,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:13,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:13,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:13,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:13,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 04:09:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:13,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:13,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:13,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:13,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:13,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:13,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:13,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:13,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:13,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:13,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:13,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:13,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-29 04:09:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:13,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:13,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:13,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:13,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:13,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:13,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:13,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:13,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:13,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:13,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:13,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:13,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 04:09:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:13,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:13,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:13,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:13,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:13,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:13,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:13,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:13,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:13,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:13,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:13,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:13,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 04:09:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:13,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:13,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:13,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:13,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:13,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:13,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:13,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:13,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:13,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:13,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:13,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:13,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-29 04:09:13,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:13,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:13,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:13,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:13,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:13,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:13,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:13,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:13,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:13,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:13,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:13,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:13,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-29 04:09:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:13,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:13,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:13,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:13,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:13,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:13,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:13,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:13,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:13,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:13,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:13,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:13,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-29 04:09:13,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:13,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:13,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:13,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:13,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:13,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:13,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:13,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:13,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:13,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:13,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:13,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:13,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-29 04:09:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:13,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:13,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:13,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:13,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:13,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:13,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:13,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:13,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:13,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:13,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:13,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:13,511 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 24 proven. 201 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-10-29 04:09:13,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709591919] [2020-10-29 04:09:13,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:09:13,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 04:09:13,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021225269] [2020-10-29 04:09:13,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 04:09:13,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:09:13,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 04:09:13,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-29 04:09:13,513 INFO L87 Difference]: Start difference. First operand 129 states and 137 transitions. Second operand 20 states. [2020-10-29 04:09:16,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:09:16,178 INFO L93 Difference]: Finished difference Result 180 states and 196 transitions. [2020-10-29 04:09:16,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 04:09:16,182 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 137 [2020-10-29 04:09:16,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:09:16,184 INFO L225 Difference]: With dead ends: 180 [2020-10-29 04:09:16,184 INFO L226 Difference]: Without dead ends: 163 [2020-10-29 04:09:16,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 26 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=186, Invalid=1976, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 04:09:16,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-29 04:09:16,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 134. [2020-10-29 04:09:16,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-29 04:09:16,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 143 transitions. [2020-10-29 04:09:16,215 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 143 transitions. Word has length 137 [2020-10-29 04:09:16,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:09:16,216 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 143 transitions. [2020-10-29 04:09:16,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 04:09:16,216 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 143 transitions. [2020-10-29 04:09:16,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-29 04:09:16,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:09:16,218 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:09:16,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 04:09:16,219 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:09:16,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:09:16,219 INFO L82 PathProgramCache]: Analyzing trace with hash 517777817, now seen corresponding path program 17 times [2020-10-29 04:09:16,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:09:16,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509224484] [2020-10-29 04:09:16,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:09:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:16,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:16,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:16,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:16,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:17,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:17,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:17,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:21,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:21,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-29 04:09:21,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 04:09:21,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 04:09:21,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:21,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:21,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 04:09:21,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:09:21,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-29 04:09:21,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:21,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:09:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:21,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:21,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:21,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:09:21,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:21,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:09:21,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:21,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:21,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:21,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:21,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:21,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:21,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:09:21,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:21,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:21,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:21,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:21,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:21,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:09:21,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:21,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:21,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:21,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:21,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:21,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:21,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 04:09:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:21,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:21,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:21,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:21,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:21,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:21,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:21,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:21,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:21,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:21,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:21,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:21,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-29 04:09:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:21,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:21,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:21,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:21,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:21,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:21,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:21,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:21,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:21,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:21,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:21,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:21,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 04:09:21,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:21,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:21,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:21,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:21,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:21,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:09:21,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:21,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:21,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:21,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:21,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:21,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:21,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 04:09:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:21,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:21,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:21,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:21,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:21,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:09:21,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:21,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:21,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:21,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:21,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:21,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:21,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-29 04:09:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:21,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:21,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:21,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:21,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:21,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:09:21,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:21,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:21,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:21,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:21,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:21,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:21,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-29 04:09:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:21,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:21,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:21,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:21,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:21,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:21,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:21,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:21,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:21,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:21,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:21,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:21,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-29 04:09:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:21,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:21,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:21,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:21,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:21,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:21,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:21,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:21,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:21,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:21,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:21,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:21,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-29 04:09:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:21,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:21,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:21,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:21,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:21,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:21,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:21,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:21,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:21,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:21,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:21,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:21,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-29 04:09:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:21,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:21,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:21,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:21,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:21,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:21,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:21,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:21,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:21,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:21,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:21,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:21,867 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 99 proven. 162 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2020-10-29 04:09:21,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509224484] [2020-10-29 04:09:21,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:09:21,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 04:09:21,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112816975] [2020-10-29 04:09:21,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 04:09:21,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:09:21,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 04:09:21,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2020-10-29 04:09:21,872 INFO L87 Difference]: Start difference. First operand 134 states and 143 transitions. Second operand 19 states. [2020-10-29 04:09:23,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:09:23,656 INFO L93 Difference]: Finished difference Result 168 states and 180 transitions. [2020-10-29 04:09:23,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 04:09:23,657 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 146 [2020-10-29 04:09:23,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:09:23,659 INFO L225 Difference]: With dead ends: 168 [2020-10-29 04:09:23,659 INFO L226 Difference]: Without dead ends: 146 [2020-10-29 04:09:23,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=146, Invalid=1044, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 04:09:23,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-29 04:09:23,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 133. [2020-10-29 04:09:23,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-29 04:09:23,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 140 transitions. [2020-10-29 04:09:23,678 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 140 transitions. Word has length 146 [2020-10-29 04:09:23,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:09:23,678 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 140 transitions. [2020-10-29 04:09:23,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 04:09:23,679 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 140 transitions. [2020-10-29 04:09:23,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-29 04:09:23,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:09:23,680 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:09:23,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 04:09:23,680 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:09:23,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:09:23,680 INFO L82 PathProgramCache]: Analyzing trace with hash 383764311, now seen corresponding path program 18 times [2020-10-29 04:09:23,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:09:23,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613897095] [2020-10-29 04:09:23,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:09:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:23,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:23,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:24,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:24,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:24,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:27,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:28,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:28,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-29 04:09:28,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 04:09:28,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 04:09:28,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:28,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:28,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 04:09:28,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-29 04:09:28,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 04:09:28,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:29,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:09:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:29,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:29,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:29,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:09:29,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:29,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:29,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:29,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:29,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:29,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:29,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:29,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:29,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:09:29,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:29,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:29,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:29,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:29,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:29,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:29,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:29,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:29,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:29,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:29,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:29,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:29,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 04:09:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:29,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:29,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:29,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:29,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:29,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:29,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:29,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:29,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:29,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:29,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:29,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:29,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-29 04:09:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:29,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:29,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:29,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:29,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:29,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:29,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:29,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:29,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:29,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:29,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:29,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:29,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 04:09:29,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:29,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:29,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:29,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:29,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:29,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:29,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:29,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:29,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:29,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:29,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:29,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:29,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 04:09:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:29,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:29,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:29,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:29,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:29,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:29,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:29,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:29,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:29,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:29,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:29,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:29,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-29 04:09:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:29,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:29,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:29,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:29,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:29,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:29,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:29,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:29,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:29,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:29,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:29,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:29,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-29 04:09:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:29,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:29,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:29,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:29,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:29,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:29,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:29,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:29,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:29,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:29,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:29,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:29,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-29 04:09:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:29,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:29,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:29,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:29,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:29,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:29,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:29,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:29,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:29,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:29,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:29,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:29,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-29 04:09:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:29,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:29,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:29,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:29,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:29,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:29,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:29,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:29,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:29,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:29,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:29,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:29,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-29 04:09:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:29,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:29,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:29,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:29,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:29,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:29,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:29,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:29,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:29,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:29,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:29,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:29,325 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 18 proven. 252 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-10-29 04:09:29,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613897095] [2020-10-29 04:09:29,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:09:29,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 04:09:29,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302813725] [2020-10-29 04:09:29,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 04:09:29,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:09:29,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 04:09:29,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=460, Unknown=0, NotChecked=0, Total=506 [2020-10-29 04:09:29,328 INFO L87 Difference]: Start difference. First operand 133 states and 140 transitions. Second operand 23 states. [2020-10-29 04:09:32,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:09:32,297 INFO L93 Difference]: Finished difference Result 176 states and 190 transitions. [2020-10-29 04:09:32,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-29 04:09:32,298 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 146 [2020-10-29 04:09:32,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:09:32,301 INFO L225 Difference]: With dead ends: 176 [2020-10-29 04:09:32,301 INFO L226 Difference]: Without dead ends: 173 [2020-10-29 04:09:32,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=208, Invalid=2548, Unknown=0, NotChecked=0, Total=2756 [2020-10-29 04:09:32,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-29 04:09:32,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 143. [2020-10-29 04:09:32,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-29 04:09:32,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 152 transitions. [2020-10-29 04:09:32,326 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 152 transitions. Word has length 146 [2020-10-29 04:09:32,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:09:32,326 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 152 transitions. [2020-10-29 04:09:32,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 04:09:32,326 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 152 transitions. [2020-10-29 04:09:32,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-29 04:09:32,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:09:32,328 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:09:32,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 04:09:32,328 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:09:32,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:09:32,329 INFO L82 PathProgramCache]: Analyzing trace with hash 707259394, now seen corresponding path program 19 times [2020-10-29 04:09:32,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:09:32,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815244830] [2020-10-29 04:09:32,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:09:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:32,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:32,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:32,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:34,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:34,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:34,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:34,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:34,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:34,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:36,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:37,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:37,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-29 04:09:37,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 04:09:37,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 04:09:37,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:37,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:37,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 04:09:37,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:09:37,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-29 04:09:37,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:37,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:09:37,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:37,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:37,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:37,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:09:37,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:37,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:09:37,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:37,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:37,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:37,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:37,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:37,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:37,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:09:37,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:37,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:37,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:37,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:37,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:37,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:09:37,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:09:37,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:37,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:37,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:37,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:37,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:37,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:37,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 04:09:37,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:37,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:37,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:37,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:37,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:37,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:09:37,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:37,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:37,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:37,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:37,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:37,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:37,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-29 04:09:37,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:37,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:37,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:37,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:37,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:37,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:37,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:37,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:37,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:37,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:37,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:37,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:37,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 04:09:37,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:37,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:37,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:37,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:37,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:37,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:37,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:37,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:37,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:37,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:37,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:37,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:37,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 04:09:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:37,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:37,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:37,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:37,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:37,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:37,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:37,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:37,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:37,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:37,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:37,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:37,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-29 04:09:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:37,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:37,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:37,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:37,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:37,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:37,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:37,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:37,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:37,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:37,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:37,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:37,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-29 04:09:37,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:37,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:37,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:37,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:37,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:37,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:37,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:37,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:37,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:37,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:37,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:37,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:37,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-29 04:09:37,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:37,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:37,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:37,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:37,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:37,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:37,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:37,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:37,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:37,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:37,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:37,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:37,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-29 04:09:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:37,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:37,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:37,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:37,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:37,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:37,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:37,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:37,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:37,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:37,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:37,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:37,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-29 04:09:37,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:37,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:37,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:37,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:37,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:37,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:37,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:37,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:37,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:37,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:37,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:37,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:37,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-29 04:09:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:37,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:37,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:37,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:37,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:37,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:37,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:37,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:37,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:37,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:37,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:37,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:37,973 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 229 proven. 91 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-10-29 04:09:37,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815244830] [2020-10-29 04:09:37,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:09:37,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 04:09:37,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450394013] [2020-10-29 04:09:37,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 04:09:37,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:09:37,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 04:09:37,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2020-10-29 04:09:37,976 INFO L87 Difference]: Start difference. First operand 143 states and 152 transitions. Second operand 22 states. [2020-10-29 04:09:41,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:09:41,896 INFO L93 Difference]: Finished difference Result 454 states and 502 transitions. [2020-10-29 04:09:41,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-29 04:09:41,896 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 155 [2020-10-29 04:09:41,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:09:41,898 INFO L225 Difference]: With dead ends: 454 [2020-10-29 04:09:41,898 INFO L226 Difference]: Without dead ends: 157 [2020-10-29 04:09:41,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1804 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1646, Invalid=4516, Unknown=0, NotChecked=0, Total=6162 [2020-10-29 04:09:41,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-29 04:09:41,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 151. [2020-10-29 04:09:41,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-29 04:09:41,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 160 transitions. [2020-10-29 04:09:41,927 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 160 transitions. Word has length 155 [2020-10-29 04:09:41,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:09:41,927 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 160 transitions. [2020-10-29 04:09:41,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 04:09:41,927 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 160 transitions. [2020-10-29 04:09:41,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-29 04:09:41,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:09:41,929 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:09:41,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 04:09:41,930 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:09:41,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:09:41,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1173968970, now seen corresponding path program 20 times [2020-10-29 04:09:41,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:09:41,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873125339] [2020-10-29 04:09:41,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:09:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:41,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:42,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:42,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:43,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:43,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:43,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:43,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:44,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:44,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:46,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:46,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:46,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-29 04:09:46,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 04:09:46,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 04:09:46,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:46,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:46,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 04:09:46,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:09:46,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-29 04:09:46,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:47,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:09:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:47,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:47,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:47,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:09:47,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:47,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:09:47,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:47,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:47,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:47,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:47,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:47,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:47,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:09:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:47,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:47,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:47,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:47,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:47,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:47,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:47,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:47,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:47,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:47,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:47,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:47,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 04:09:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:47,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:47,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:47,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:47,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:47,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:47,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:47,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:47,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:47,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:47,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:47,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:47,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 04:09:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:47,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:47,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:47,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:47,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:47,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:47,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:47,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:47,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:47,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:47,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:47,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:47,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-29 04:09:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:47,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:47,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:47,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:47,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:47,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:47,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:47,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:47,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:47,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:47,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:47,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:47,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 04:09:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:47,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:47,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:47,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:47,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:47,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:47,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:47,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:47,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:47,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:47,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:47,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:47,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-29 04:09:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:47,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:47,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:47,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:47,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:47,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:47,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:47,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:47,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:47,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:47,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:47,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:47,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-29 04:09:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:47,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:47,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:47,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:47,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:47,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:47,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:47,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:47,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:47,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:47,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:47,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:47,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-29 04:09:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:47,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:47,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:47,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:47,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:47,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:47,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:47,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:47,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:47,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:47,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:47,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:47,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-29 04:09:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:47,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:47,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:47,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:47,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:47,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:47,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:47,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:47,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:47,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:47,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:47,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:47,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-29 04:09:47,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:47,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:47,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:47,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:47,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:47,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:47,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:47,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:47,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:47,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:47,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:47,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:47,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-29 04:09:47,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:47,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:47,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:47,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:47,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:47,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:47,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:47,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:47,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:47,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:47,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:47,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:47,809 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 30 proven. 311 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2020-10-29 04:09:47,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873125339] [2020-10-29 04:09:47,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:09:47,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 04:09:47,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652764640] [2020-10-29 04:09:47,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 04:09:47,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:09:47,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 04:09:47,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2020-10-29 04:09:47,811 INFO L87 Difference]: Start difference. First operand 151 states and 160 transitions. Second operand 23 states. [2020-10-29 04:09:51,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:09:51,235 INFO L93 Difference]: Finished difference Result 207 states and 225 transitions. [2020-10-29 04:09:51,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-29 04:09:51,236 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 163 [2020-10-29 04:09:51,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:09:51,238 INFO L225 Difference]: With dead ends: 207 [2020-10-29 04:09:51,238 INFO L226 Difference]: Without dead ends: 190 [2020-10-29 04:09:51,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 31 SyntacticMatches, 6 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=202, Invalid=2248, Unknown=0, NotChecked=0, Total=2450 [2020-10-29 04:09:51,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-29 04:09:51,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 156. [2020-10-29 04:09:51,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-29 04:09:51,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 166 transitions. [2020-10-29 04:09:51,266 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 166 transitions. Word has length 163 [2020-10-29 04:09:51,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:09:51,266 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 166 transitions. [2020-10-29 04:09:51,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 04:09:51,266 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 166 transitions. [2020-10-29 04:09:51,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-29 04:09:51,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:09:51,268 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:09:51,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 04:09:51,268 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:09:51,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:09:51,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1677851005, now seen corresponding path program 21 times [2020-10-29 04:09:51,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:09:51,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941612409] [2020-10-29 04:09:51,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:09:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:51,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:51,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:52,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:52,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:52,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:52,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:53,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:53,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:56,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:56,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:56,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-29 04:09:56,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 04:09:56,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 04:09:56,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:56,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:56,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 04:09:56,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 04:09:56,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-29 04:09:56,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:57,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:09:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:57,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:57,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:57,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:09:57,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:57,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:09:57,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:57,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:57,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:57,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:57,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:57,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:57,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:09:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:57,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:57,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:57,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:57,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:57,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:09:57,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:57,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:57,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:57,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:57,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:57,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:57,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 04:09:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:57,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:57,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:57,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:57,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:57,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:57,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:57,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:57,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:57,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:57,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:57,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:57,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 04:09:57,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:57,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:57,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:57,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:57,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:57,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:57,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:57,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:57,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:57,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:57,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:57,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:57,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-29 04:09:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:57,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:57,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:57,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:57,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:57,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:57,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:57,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:57,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:57,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:57,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:57,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:57,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 04:09:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:57,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:57,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:57,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:57,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:57,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:57,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:57,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:57,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:57,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:57,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:57,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 04:09:57,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-29 04:09:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:57,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:57,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:57,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:57,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:57,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:57,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:57,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:57,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:57,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:57,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:57,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:57,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-29 04:09:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:57,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:57,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:57,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:57,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:57,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:57,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:57,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:57,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:57,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:57,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:57,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:57,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-29 04:09:57,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:57,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:57,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:57,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:57,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:57,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:57,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:57,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:57,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:57,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:57,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:57,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:57,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-29 04:09:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:57,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:57,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:57,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:57,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:57,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:57,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:57,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:57,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:57,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:57,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:57,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:57,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-29 04:09:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:57,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:57,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:57,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:57,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:57,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:57,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:57,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:57,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:57,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:57,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:57,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:57,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-29 04:09:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:57,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:57,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:57,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:57,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:57,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:57,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:57,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:57,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:57,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:57,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:57,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:57,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-29 04:09:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:57,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:57,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:57,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:57,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:57,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:57,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:57,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:57,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:57,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:57,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:57,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:57,374 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 22 proven. 374 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2020-10-29 04:09:57,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941612409] [2020-10-29 04:09:57,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:09:57,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 04:09:57,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798710167] [2020-10-29 04:09:57,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 04:09:57,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:09:57,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 04:09:57,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=598, Unknown=0, NotChecked=0, Total=650 [2020-10-29 04:09:57,377 INFO L87 Difference]: Start difference. First operand 156 states and 166 transitions. Second operand 26 states. [2020-10-29 04:10:01,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:10:01,618 INFO L93 Difference]: Finished difference Result 205 states and 223 transitions. [2020-10-29 04:10:01,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-29 04:10:01,619 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 172 [2020-10-29 04:10:01,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:10:01,622 INFO L225 Difference]: With dead ends: 205 [2020-10-29 04:10:01,622 INFO L226 Difference]: Without dead ends: 202 [2020-10-29 04:10:01,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=253, Invalid=3529, Unknown=0, NotChecked=0, Total=3782 [2020-10-29 04:10:01,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-29 04:10:01,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 166. [2020-10-29 04:10:01,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-29 04:10:01,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 178 transitions. [2020-10-29 04:10:01,653 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 178 transitions. Word has length 172 [2020-10-29 04:10:01,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:10:01,654 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 178 transitions. [2020-10-29 04:10:01,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 04:10:01,654 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 178 transitions. [2020-10-29 04:10:01,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-29 04:10:01,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:10:01,656 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 8, 6, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:10:01,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 04:10:01,656 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:10:01,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:10:01,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1774191018, now seen corresponding path program 22 times [2020-10-29 04:10:01,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:10:01,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266443933] [2020-10-29 04:10:01,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:10:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:01,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:01,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:02,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:02,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:02,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:02,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:02,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:05,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:06,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:06,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-29 04:10:06,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 04:10:06,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 04:10:06,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:06,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:06,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 04:10:06,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:10:06,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-29 04:10:06,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:07,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:10:07,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:07,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:07,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:07,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:10:07,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:07,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:07,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:07,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:07,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:10:07,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:07,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:10:07,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:07,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:10:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:07,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:07,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:07,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:07,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:07,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:10:07,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:07,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:07,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:07,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:07,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:07,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:07,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 04:10:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:07,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:07,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:07,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:07,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:07,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:07,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:07,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:07,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:07,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:07,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:07,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:07,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 04:10:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:07,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:07,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:07,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:07,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:07,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:10:07,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:07,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:07,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:07,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:07,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:07,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:07,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-29 04:10:07,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:07,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:07,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:07,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:07,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:07,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:10:07,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:07,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:07,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:07,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:07,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:07,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:07,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 04:10:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:07,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:07,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:07,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:07,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:07,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:07,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:07,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:07,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:07,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:07,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:07,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:07,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-29 04:10:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:07,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:07,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:07,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:07,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:07,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:07,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:07,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:07,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:07,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:07,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:07,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:07,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-29 04:10:07,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:07,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:07,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:07,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:07,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:07,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:07,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:07,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:07,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:07,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:07,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:07,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:07,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-29 04:10:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:07,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:07,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:07,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:07,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:07,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:07,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:07,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:07,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:07,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:07,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:07,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:07,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-29 04:10:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:07,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:07,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:07,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:07,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:07,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:07,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:07,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:07,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:07,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:07,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:07,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:07,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-29 04:10:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:07,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:07,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:07,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:07,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:07,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:07,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:07,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:07,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:07,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:07,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:07,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:07,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-29 04:10:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:07,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:07,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:07,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:07,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:07,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:10:07,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:07,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:07,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:10:07,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:10:07,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:10:07,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:07,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-29 04:10:07,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:07,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:07,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:07,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:07,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:07,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:10:07,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:07,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:07,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:10:07,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:10:07,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:10:07,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:07,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-29 04:10:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:07,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:07,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:07,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:07,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:07,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:07,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:07,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:07,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:10:07,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:10:07,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:10:07,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:07,484 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 174 proven. 262 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2020-10-29 04:10:07,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266443933] [2020-10-29 04:10:07,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:10:07,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 04:10:07,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137142664] [2020-10-29 04:10:07,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 04:10:07,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:10:07,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 04:10:07,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2020-10-29 04:10:07,486 INFO L87 Difference]: Start difference. First operand 166 states and 178 transitions. Second operand 22 states. [2020-10-29 04:10:10,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:10:10,149 INFO L93 Difference]: Finished difference Result 215 states and 233 transitions. [2020-10-29 04:10:10,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 04:10:10,150 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 181 [2020-10-29 04:10:10,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:10:10,153 INFO L225 Difference]: With dead ends: 215 [2020-10-29 04:10:10,153 INFO L226 Difference]: Without dead ends: 183 [2020-10-29 04:10:10,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=189, Invalid=1617, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 04:10:10,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-29 04:10:10,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 165. [2020-10-29 04:10:10,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-29 04:10:10,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 175 transitions. [2020-10-29 04:10:10,178 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 175 transitions. Word has length 181 [2020-10-29 04:10:10,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:10:10,178 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 175 transitions. [2020-10-29 04:10:10,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 04:10:10,179 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 175 transitions. [2020-10-29 04:10:10,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-29 04:10:10,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:10:10,180 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:10:10,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 04:10:10,180 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:10:10,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:10:10,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1846577576, now seen corresponding path program 23 times [2020-10-29 04:10:10,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:10:10,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452939531] [2020-10-29 04:10:10,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:10:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:10,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:10,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:10,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:12,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:15,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:15,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-29 04:10:15,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:10:15,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 04:10:15,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:15,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:15,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 04:10:15,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:10:15,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-29 04:10:15,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:15,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:10:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:15,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:15,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:15,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:10:15,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:15,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:15,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:15,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:15,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:10:15,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:15,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:10:15,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:15,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:10:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:15,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:15,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:15,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:15,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:15,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:10:15,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:10:15,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:15,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:15,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:15,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:15,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:15,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:15,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 04:10:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:15,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:15,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:15,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:15,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:15,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:15,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:15,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:15,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:15,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:15,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:15,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:15,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 04:10:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:15,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:15,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:15,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:15,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:15,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:15,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:15,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:15,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:15,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:15,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:15,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:15,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-29 04:10:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:15,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:15,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:15,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:15,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:15,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:15,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:15,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:15,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:15,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:15,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:15,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:15,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 04:10:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:15,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:15,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:15,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:15,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:15,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:15,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:15,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:15,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:15,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:15,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:15,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:15,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-29 04:10:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:15,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:15,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:15,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:15,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:15,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:15,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:15,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:15,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:15,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:15,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:15,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:15,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-29 04:10:15,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:15,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:15,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:15,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:15,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:15,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:15,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:15,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:15,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:15,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:15,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:15,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:15,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-29 04:10:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:15,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:15,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:15,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:15,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:15,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:15,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:15,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:15,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:15,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:15,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:15,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:16,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-29 04:10:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:16,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:16,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:16,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:16,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:16,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:16,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:16,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:16,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:16,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:16,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:16,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:16,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-29 04:10:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:16,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:16,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:16,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:16,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:16,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:16,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:16,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:16,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:16,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:16,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:16,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:16,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-29 04:10:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:16,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:16,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:16,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:16,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:16,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:16,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:16,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:16,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:16,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:16,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:16,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:16,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-29 04:10:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:16,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:16,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:16,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:16,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:16,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:16,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:16,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:16,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:16,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:16,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:16,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:16,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-29 04:10:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:16,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:16,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:16,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:16,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:16,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:16,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:16,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:16,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:16,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:16,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:16,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:16,068 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 390 proven. 66 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2020-10-29 04:10:16,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452939531] [2020-10-29 04:10:16,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:10:16,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 04:10:16,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002478634] [2020-10-29 04:10:16,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 04:10:16,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:10:16,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 04:10:16,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2020-10-29 04:10:16,070 INFO L87 Difference]: Start difference. First operand 165 states and 175 transitions. Second operand 25 states. [2020-10-29 04:10:22,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:10:22,345 INFO L93 Difference]: Finished difference Result 563 states and 625 transitions. [2020-10-29 04:10:22,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-10-29 04:10:22,346 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 181 [2020-10-29 04:10:22,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:10:22,348 INFO L225 Difference]: With dead ends: 563 [2020-10-29 04:10:22,349 INFO L226 Difference]: Without dead ends: 179 [2020-10-29 04:10:22,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2810 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2407, Invalid=6523, Unknown=0, NotChecked=0, Total=8930 [2020-10-29 04:10:22,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-29 04:10:22,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 173. [2020-10-29 04:10:22,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-29 04:10:22,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 183 transitions. [2020-10-29 04:10:22,381 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 183 transitions. Word has length 181 [2020-10-29 04:10:22,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:10:22,382 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 183 transitions. [2020-10-29 04:10:22,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 04:10:22,382 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 183 transitions. [2020-10-29 04:10:22,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-29 04:10:22,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:10:22,383 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:10:22,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 04:10:22,383 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:10:22,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:10:22,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1271449612, now seen corresponding path program 24 times [2020-10-29 04:10:22,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:10:22,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740370826] [2020-10-29 04:10:22,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:10:22,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:22,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:22,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:22,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:23,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:23,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:23,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:23,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:24,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:24,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:27,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:27,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-29 04:10:27,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 04:10:27,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 04:10:27,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:27,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:27,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 04:10:27,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:10:27,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-29 04:10:27,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:28,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:10:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:28,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:28,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:28,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:10:28,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:28,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:28,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:28,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:28,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:10:28,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:28,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:10:28,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:28,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:10:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:28,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:28,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:28,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:28,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:28,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:28,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:28,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:28,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:28,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:28,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:28,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:28,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-29 04:10:28,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:28,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:28,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:28,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:28,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:28,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:28,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:28,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:28,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:28,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:28,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:28,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:28,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-29 04:10:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:28,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:28,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:28,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:28,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:28,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:28,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:28,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:28,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:28,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:28,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:28,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:28,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-29 04:10:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:28,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:28,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:28,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:28,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:28,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:28,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:28,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:28,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:28,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:28,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:28,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:28,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 04:10:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:28,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:28,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:28,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:28,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:28,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:28,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:28,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:28,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:28,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:28,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:28,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:28,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-29 04:10:28,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:28,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:28,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:28,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:28,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:28,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:28,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:28,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:28,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:28,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:28,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:28,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:28,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-29 04:10:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:28,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:28,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:28,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:28,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:28,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:28,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:28,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:28,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:28,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:28,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:28,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:28,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-29 04:10:28,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:28,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:28,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:28,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:28,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:28,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:28,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:28,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:28,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:28,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:28,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:28,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:28,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 04:10:28,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:28,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:28,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:28,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:28,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:28,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:28,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:28,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:28,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:28,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:28,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:28,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:28,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-29 04:10:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:28,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:28,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:28,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:28,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:28,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:28,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:28,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:28,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:28,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:28,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:28,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:28,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-29 04:10:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:28,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:28,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:28,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:28,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:28,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:28,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:28,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:28,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:28,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:28,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:28,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:28,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-29 04:10:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:28,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:28,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:28,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:28,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:28,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:28,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:28,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:28,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:28,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:28,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:28,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:28,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-29 04:10:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:28,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:28,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:28,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:28,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:28,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:10:28,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:28,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:28,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:10:28,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:10:28,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:10:28,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:28,393 INFO L134 CoverageAnalysis]: Checked inductivity of 836 backedges. 92 proven. 386 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2020-10-29 04:10:28,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740370826] [2020-10-29 04:10:28,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:10:28,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 04:10:28,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787096934] [2020-10-29 04:10:28,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 04:10:28,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:10:28,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 04:10:28,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2020-10-29 04:10:28,396 INFO L87 Difference]: Start difference. First operand 173 states and 183 transitions. Second operand 25 states. [2020-10-29 04:10:32,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:10:32,055 INFO L93 Difference]: Finished difference Result 215 states and 230 transitions. [2020-10-29 04:10:32,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-29 04:10:32,056 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 189 [2020-10-29 04:10:32,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:10:32,059 INFO L225 Difference]: With dead ends: 215 [2020-10-29 04:10:32,059 INFO L226 Difference]: Without dead ends: 198 [2020-10-29 04:10:32,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=233, Invalid=2317, Unknown=0, NotChecked=0, Total=2550 [2020-10-29 04:10:32,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-29 04:10:32,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 173. [2020-10-29 04:10:32,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-29 04:10:32,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 182 transitions. [2020-10-29 04:10:32,083 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 182 transitions. Word has length 189 [2020-10-29 04:10:32,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:10:32,084 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 182 transitions. [2020-10-29 04:10:32,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 04:10:32,084 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 182 transitions. [2020-10-29 04:10:32,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-29 04:10:32,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:10:32,086 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:10:32,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 04:10:32,086 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:10:32,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:10:32,087 INFO L82 PathProgramCache]: Analyzing trace with hash -8414066, now seen corresponding path program 25 times [2020-10-29 04:10:32,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:10:32,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907038270] [2020-10-29 04:10:32,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:10:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:32,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:32,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:33,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:33,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:37,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:37,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-29 04:10:37,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:10:37,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-29 04:10:37,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:37,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:37,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-29 04:10:37,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:10:37,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-29 04:10:37,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:38,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:10:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:38,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:38,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:38,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:10:38,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:38,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:10:38,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:38,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:38,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:10:38,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:38,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:10:38,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:38,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:10:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:38,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:38,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:38,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:38,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:38,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:38,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:38,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:38,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:10:38,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:38,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:10:38,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:38,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-29 04:10:38,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:38,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:38,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:38,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:38,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:38,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:38,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:38,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:38,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:38,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:38,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:38,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:38,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-29 04:10:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:38,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:38,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:38,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:38,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:38,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:38,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:38,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:38,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:38,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:38,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:38,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:38,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-29 04:10:38,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:38,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:38,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:38,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:38,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:38,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:38,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:38,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:38,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:38,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:38,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:38,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:38,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 04:10:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:38,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:38,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:38,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:38,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:38,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:38,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:38,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:38,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:38,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:38,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:38,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:38,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-29 04:10:38,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:38,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:38,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:38,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:38,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:38,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:38,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:38,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:38,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:38,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:38,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:38,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:38,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-29 04:10:38,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:38,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:38,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:38,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:38,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:38,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:38,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:38,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:38,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:38,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:38,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:38,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:38,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-29 04:10:38,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:38,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:38,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:38,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:38,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:38,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:38,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:38,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:38,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:38,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:38,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:38,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:38,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 04:10:38,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:38,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:38,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:38,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:38,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:38,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:38,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:38,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:38,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:38,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:38,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:38,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:38,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-29 04:10:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:38,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:38,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:38,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:38,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:38,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:38,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:38,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:38,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:38,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:38,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:38,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:38,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-29 04:10:38,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:38,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:38,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:38,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:38,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:38,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:38,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:38,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:38,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:38,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:38,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:38,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:38,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-29 04:10:38,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:38,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:38,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:38,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:38,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:38,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:38,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:38,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:38,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:38,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:38,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:38,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:38,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-29 04:10:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:38,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:38,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:38,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:38,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:38,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:38,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:38,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:38,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:38,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:38,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:38,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:38,320 INFO L134 CoverageAnalysis]: Checked inductivity of 836 backedges. 36 proven. 445 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2020-10-29 04:10:38,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907038270] [2020-10-29 04:10:38,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:10:38,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 04:10:38,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383560124] [2020-10-29 04:10:38,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 04:10:38,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:10:38,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 04:10:38,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=598, Unknown=0, NotChecked=0, Total=650 [2020-10-29 04:10:38,323 INFO L87 Difference]: Start difference. First operand 173 states and 182 transitions. Second operand 26 states.