/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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 22:34:47,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 22:34:47,248 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 22:34:47,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 22:34:47,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 22:34:47,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 22:34:47,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 22:34:47,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 22:34:47,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 22:34:47,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 22:34:47,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 22:34:47,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 22:34:47,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 22:34:47,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 22:34:47,315 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 22:34:47,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 22:34:47,318 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 22:34:47,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 22:34:47,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 22:34:47,327 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 22:34:47,329 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 22:34:47,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 22:34:47,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 22:34:47,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 22:34:47,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 22:34:47,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 22:34:47,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 22:34:47,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 22:34:47,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 22:34:47,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 22:34:47,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 22:34:47,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 22:34:47,359 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 22:34:47,360 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 22:34:47,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 22:34:47,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 22:34:47,364 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 22:34:47,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 22:34:47,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 22:34:47,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 22:34:47,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 22:34:47,368 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 [2020-10-26 22:34:47,428 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 22:34:47,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 22:34:47,430 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 22:34:47,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 22:34:47,430 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 22:34:47,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 22:34:47,431 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 22:34:47,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 22:34:47,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 22:34:47,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 22:34:47,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 22:34:47,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 22:34:47,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 22:34:47,432 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 22:34:47,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 22:34:47,432 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 22:34:47,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 22:34:47,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 22:34:47,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 22:34:47,433 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 22:34:47,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 22:34:47,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 22:34:47,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 22:34:47,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 22:34:47,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 22:34:47,435 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 22:34:47,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 22:34:47,435 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 22:34:47,435 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 22:34:47,435 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 22:34:47,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 22:34:47,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 22:34:47,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 22:34:47,874 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 22:34:47,874 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 22:34:47,876 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label09.c [2020-10-26 22:34:47,964 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f420d8e07/4aa6454fcaf94147bc6059d17735aa59/FLAG93a80a6fc [2020-10-26 22:34:48,854 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 22:34:48,854 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label09.c [2020-10-26 22:34:48,872 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f420d8e07/4aa6454fcaf94147bc6059d17735aa59/FLAG93a80a6fc [2020-10-26 22:34:48,994 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f420d8e07/4aa6454fcaf94147bc6059d17735aa59 [2020-10-26 22:34:49,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 22:34:49,012 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 22:34:49,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 22:34:49,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 22:34:49,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 22:34:49,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:34:48" (1/1) ... [2020-10-26 22:34:49,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@115247e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:34:49, skipping insertion in model container [2020-10-26 22:34:49,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:34:48" (1/1) ... [2020-10-26 22:34:49,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 22:34:49,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 22:34:49,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:34:49,858 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 22:34:50,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:34:50,254 INFO L208 MainTranslator]: Completed translation [2020-10-26 22:34:50,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:34:50 WrapperNode [2020-10-26 22:34:50,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 22:34:50,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 22:34:50,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 22:34:50,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 22:34:50,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:34:50" (1/1) ... [2020-10-26 22:34:50,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:34:50" (1/1) ... [2020-10-26 22:34:50,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:34:50" (1/1) ... [2020-10-26 22:34:50,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:34:50" (1/1) ... [2020-10-26 22:34:50,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:34:50" (1/1) ... [2020-10-26 22:34:50,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:34:50" (1/1) ... [2020-10-26 22:34:50,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:34:50" (1/1) ... [2020-10-26 22:34:50,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 22:34:50,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 22:34:50,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 22:34:50,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 22:34:50,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:34:50" (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 [2020-10-26 22:34:50,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 22:34:50,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 22:34:50,561 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 22:34:50,562 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 22:34:50,562 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 22:34:50,562 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 22:34:50,563 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 22:34:50,563 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 22:34:50,563 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 22:34:50,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 22:34:50,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 22:34:50,564 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 22:34:50,564 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 22:34:50,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 22:34:50,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 22:34:50,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 22:34:50,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 22:34:50,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 22:34:50,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 22:34:52,471 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 22:34:52,472 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 22:34:52,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:34:52 BoogieIcfgContainer [2020-10-26 22:34:52,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 22:34:52,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 22:34:52,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 22:34:52,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 22:34:52,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:34:48" (1/3) ... [2020-10-26 22:34:52,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dbb47ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:34:52, skipping insertion in model container [2020-10-26 22:34:52,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:34:50" (2/3) ... [2020-10-26 22:34:52,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dbb47ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:34:52, skipping insertion in model container [2020-10-26 22:34:52,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:34:52" (3/3) ... [2020-10-26 22:34:52,483 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label09.c [2020-10-26 22:34:52,496 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 22:34:52,502 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 22:34:52,516 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 22:34:52,546 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 22:34:52,546 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 22:34:52,546 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 22:34:52,547 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 22:34:52,547 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 22:34:52,547 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 22:34:52,547 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 22:34:52,547 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 22:34:52,573 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-26 22:34:52,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-26 22:34:52,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:34:52,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:34:52,585 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:34:52,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:34:52,591 INFO L82 PathProgramCache]: Analyzing trace with hash 2043490214, now seen corresponding path program 1 times [2020-10-26 22:34:52,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:34:52,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593885421] [2020-10-26 22:34:52,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:34:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:34:52,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:34:53,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:34:53,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-26 22:34:53,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:34:53,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 631 [2020-10-26 22:34:53,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:34:53,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:34:53,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:34:53,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:34:53,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 22:34:53,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:34:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:34:53,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:34:53,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:34:53,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:34:53,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:34:53,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 22:34:53,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:34:53,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:34:53,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:34:53,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:34:53,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:34:53,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:34:53,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593885421] [2020-10-26 22:34:53,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:34:53,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 22:34:53,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089184917] [2020-10-26 22:34:53,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 22:34:53,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:34:53,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 22:34:53,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 22:34:53,829 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 4 states. [2020-10-26 22:34:56,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:34:56,774 INFO L93 Difference]: Finished difference Result 796 states and 1392 transitions. [2020-10-26 22:34:56,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:34:56,782 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-10-26 22:34:56,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:34:56,813 INFO L225 Difference]: With dead ends: 796 [2020-10-26 22:34:56,816 INFO L226 Difference]: Without dead ends: 435 [2020-10-26 22:34:56,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:34:56,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-10-26 22:34:56,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 431. [2020-10-26 22:34:56,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-10-26 22:34:56,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 619 transitions. [2020-10-26 22:34:56,956 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 619 transitions. Word has length 73 [2020-10-26 22:34:56,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:34:56,956 INFO L481 AbstractCegarLoop]: Abstraction has 431 states and 619 transitions. [2020-10-26 22:34:56,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 22:34:56,957 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 619 transitions. [2020-10-26 22:34:56,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-26 22:34:56,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:34:56,965 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:34:56,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 22:34:56,966 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:34:56,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:34:56,967 INFO L82 PathProgramCache]: Analyzing trace with hash 645954923, now seen corresponding path program 1 times [2020-10-26 22:34:56,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:34:56,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033019854] [2020-10-26 22:34:56,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:34:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:34:57,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:34:57,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:34:58,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:34:59,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:34:59,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-26 22:34:59,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:34:59,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2497 [2020-10-26 22:34:59,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:34:59,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:34:59,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:34:59,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-26 22:34:59,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:34:59,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:34:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:34:59,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:34:59,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:34:59,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:34:59,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:34:59,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 22:34:59,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:34:59,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:34:59,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:34:59,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:34:59,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:34:59,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:34:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:34:59,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:34:59,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:34:59,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 22:34:59,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:34:59,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-26 22:34:59,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:34:59,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:34:59,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:34:59,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 22:34:59,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:00,083 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:35:00,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033019854] [2020-10-26 22:35:00,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:35:00,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 22:35:00,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708922692] [2020-10-26 22:35:00,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:35:00,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:35:00,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:35:00,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:35:00,089 INFO L87 Difference]: Start difference. First operand 431 states and 619 transitions. Second operand 8 states. [2020-10-26 22:35:04,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:35:04,463 INFO L93 Difference]: Finished difference Result 1666 states and 2473 transitions. [2020-10-26 22:35:04,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 22:35:04,465 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 145 [2020-10-26 22:35:04,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:35:04,478 INFO L225 Difference]: With dead ends: 1666 [2020-10-26 22:35:04,479 INFO L226 Difference]: Without dead ends: 1241 [2020-10-26 22:35:04,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-26 22:35:04,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2020-10-26 22:35:04,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1209. [2020-10-26 22:35:04,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1209 states. [2020-10-26 22:35:04,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1691 transitions. [2020-10-26 22:35:04,583 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1691 transitions. Word has length 145 [2020-10-26 22:35:04,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:35:04,583 INFO L481 AbstractCegarLoop]: Abstraction has 1209 states and 1691 transitions. [2020-10-26 22:35:04,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:35:04,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1691 transitions. [2020-10-26 22:35:04,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-26 22:35:04,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:35:04,593 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:35:04,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 22:35:04,593 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:35:04,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:35:04,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1281645015, now seen corresponding path program 1 times [2020-10-26 22:35:04,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:35:04,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839774943] [2020-10-26 22:35:04,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:35:04,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:04,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:04,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:05,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:07,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:07,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-26 22:35:07,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:35:07,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2752 [2020-10-26 22:35:07,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:07,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:35:07,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:35:07,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 22:35:07,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:07,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:35:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:07,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:07,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:07,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:35:07,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:07,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 22:35:07,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:07,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:35:07,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:07,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:35:07,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:07,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:35:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:07,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:07,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:07,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:35:07,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:07,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-26 22:35:07,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:07,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:07,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:35:07,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:35:07,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:07,913 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:35:07,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839774943] [2020-10-26 22:35:07,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:35:07,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:35:07,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490338345] [2020-10-26 22:35:07,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:35:07,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:35:07,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:35:07,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:35:07,919 INFO L87 Difference]: Start difference. First operand 1209 states and 1691 transitions. Second operand 7 states. [2020-10-26 22:35:10,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:35:10,692 INFO L93 Difference]: Finished difference Result 3033 states and 4210 transitions. [2020-10-26 22:35:10,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:35:10,699 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-10-26 22:35:10,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:35:10,710 INFO L225 Difference]: With dead ends: 3033 [2020-10-26 22:35:10,710 INFO L226 Difference]: Without dead ends: 1830 [2020-10-26 22:35:10,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:35:10,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2020-10-26 22:35:10,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1807. [2020-10-26 22:35:10,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1807 states. [2020-10-26 22:35:10,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 2358 transitions. [2020-10-26 22:35:10,784 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 2358 transitions. Word has length 146 [2020-10-26 22:35:10,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:35:10,785 INFO L481 AbstractCegarLoop]: Abstraction has 1807 states and 2358 transitions. [2020-10-26 22:35:10,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:35:10,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 2358 transitions. [2020-10-26 22:35:10,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-26 22:35:10,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:35:10,790 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:35:10,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 22:35:10,790 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:35:10,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:35:10,791 INFO L82 PathProgramCache]: Analyzing trace with hash 274744050, now seen corresponding path program 1 times [2020-10-26 22:35:10,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:35:10,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095825830] [2020-10-26 22:35:10,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:35:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:10,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:11,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:11,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-26 22:35:11,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:11,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-10-26 22:35:11,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:11,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:11,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:35:11,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-26 22:35:11,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 22:35:11,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:35:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:11,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:11,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:11,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:35:11,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:11,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:35:11,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:11,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:35:11,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:11,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:35:11,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:11,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:35:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:11,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:11,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:11,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:35:11,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:11,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-26 22:35:11,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:11,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:35:11,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:11,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:35:11,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:11,683 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:35:11,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095825830] [2020-10-26 22:35:11,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:35:11,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:35:11,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684546739] [2020-10-26 22:35:11,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:35:11,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:35:11,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:35:11,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:35:11,687 INFO L87 Difference]: Start difference. First operand 1807 states and 2358 transitions. Second operand 5 states. [2020-10-26 22:35:14,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:35:14,278 INFO L93 Difference]: Finished difference Result 4009 states and 5340 transitions. [2020-10-26 22:35:14,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:35:14,279 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2020-10-26 22:35:14,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:35:14,296 INFO L225 Difference]: With dead ends: 4009 [2020-10-26 22:35:14,297 INFO L226 Difference]: Without dead ends: 2396 [2020-10-26 22:35:14,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:35:14,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2396 states. [2020-10-26 22:35:14,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2396 to 2190. [2020-10-26 22:35:14,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2190 states. [2020-10-26 22:35:14,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2190 states to 2190 states and 2829 transitions. [2020-10-26 22:35:14,382 INFO L78 Accepts]: Start accepts. Automaton has 2190 states and 2829 transitions. Word has length 204 [2020-10-26 22:35:14,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:35:14,386 INFO L481 AbstractCegarLoop]: Abstraction has 2190 states and 2829 transitions. [2020-10-26 22:35:14,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:35:14,386 INFO L276 IsEmpty]: Start isEmpty. Operand 2190 states and 2829 transitions. [2020-10-26 22:35:14,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-26 22:35:14,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:35:14,394 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:35:14,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 22:35:14,394 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:35:14,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:35:14,395 INFO L82 PathProgramCache]: Analyzing trace with hash -204423266, now seen corresponding path program 1 times [2020-10-26 22:35:14,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:35:14,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321704090] [2020-10-26 22:35:14,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:35:14,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:14,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:14,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:15,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:16,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:19,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:19,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-26 22:35:19,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:35:19,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-26 22:35:19,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:19,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 22:35:19,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:35:19,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-26 22:35:19,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:19,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:35:19,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:19,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:19,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:19,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:35:19,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:19,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 22:35:19,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:19,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:35:19,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:19,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:35:19,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:19,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:35:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:19,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:20,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:20,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:35:20,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:20,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-26 22:35:20,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:20,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:20,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:35:20,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 22:35:20,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:20,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:35:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:20,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:20,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:20,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:35:20,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:20,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-26 22:35:20,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:20,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:35:20,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:35:20,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:35:20,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-26 22:35:20,602 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 116 proven. 17 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-26 22:35:20,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321704090] [2020-10-26 22:35:20,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:35:20,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:35:20,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966381453] [2020-10-26 22:35:20,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:35:20,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:35:20,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:35:20,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:35:20,608 INFO L87 Difference]: Start difference. First operand 2190 states and 2829 transitions. Second operand 8 states. [2020-10-26 22:35:22,747 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2020-10-26 22:35:24,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:35:24,189 INFO L93 Difference]: Finished difference Result 4288 states and 5703 transitions. [2020-10-26 22:35:24,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 22:35:24,189 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 262 [2020-10-26 22:35:24,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:35:24,204 INFO L225 Difference]: With dead ends: 4288 [2020-10-26 22:35:24,204 INFO L226 Difference]: Without dead ends: 2280 [2020-10-26 22:35:24,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-26 22:35:24,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2280 states. [2020-10-26 22:35:24,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2280 to 2204. [2020-10-26 22:35:24,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2204 states. [2020-10-26 22:35:24,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2204 states to 2204 states and 2832 transitions. [2020-10-26 22:35:24,316 INFO L78 Accepts]: Start accepts. Automaton has 2204 states and 2832 transitions. Word has length 262 [2020-10-26 22:35:24,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:35:24,317 INFO L481 AbstractCegarLoop]: Abstraction has 2204 states and 2832 transitions. [2020-10-26 22:35:24,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:35:24,317 INFO L276 IsEmpty]: Start isEmpty. Operand 2204 states and 2832 transitions. [2020-10-26 22:35:24,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-26 22:35:24,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:35:24,323 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:35:24,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 22:35:24,324 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:35:24,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:35:24,324 INFO L82 PathProgramCache]: Analyzing trace with hash 486700890, now seen corresponding path program 1 times [2020-10-26 22:35:24,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:35:24,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084672643] [2020-10-26 22:35:24,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:35:24,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:24,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:24,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:25,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:27,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:27,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-26 22:35:27,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:35:27,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2693 [2020-10-26 22:35:27,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:27,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:27,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-26 22:35:27,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 22:35:27,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:27,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:35:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:27,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:27,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:27,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:35:27,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:27,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 22:35:27,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:27,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:35:27,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:27,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:35:27,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:35:27,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:35:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:27,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:27,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:27,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:35:27,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:27,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-26 22:35:27,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:27,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:35:27,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:27,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:35:27,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:27,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:35:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:27,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:27,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:27,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 22:35:27,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:27,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-26 22:35:27,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:27,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:27,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:35:27,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:35:27,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:27,875 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 201 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:35:27,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084672643] [2020-10-26 22:35:27,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:35:27,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:35:27,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280082634] [2020-10-26 22:35:27,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:35:27,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:35:27,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:35:27,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:35:27,881 INFO L87 Difference]: Start difference. First operand 2204 states and 2832 transitions. Second operand 7 states. [2020-10-26 22:35:31,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:35:31,869 INFO L93 Difference]: Finished difference Result 4855 states and 6354 transitions. [2020-10-26 22:35:31,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:35:31,870 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 263 [2020-10-26 22:35:31,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:35:31,890 INFO L225 Difference]: With dead ends: 4855 [2020-10-26 22:35:31,890 INFO L226 Difference]: Without dead ends: 2845 [2020-10-26 22:35:31,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:35:31,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2845 states. [2020-10-26 22:35:31,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2845 to 2621. [2020-10-26 22:35:31,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2621 states. [2020-10-26 22:35:32,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2621 states to 2621 states and 3365 transitions. [2020-10-26 22:35:32,003 INFO L78 Accepts]: Start accepts. Automaton has 2621 states and 3365 transitions. Word has length 263 [2020-10-26 22:35:32,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:35:32,004 INFO L481 AbstractCegarLoop]: Abstraction has 2621 states and 3365 transitions. [2020-10-26 22:35:32,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:35:32,004 INFO L276 IsEmpty]: Start isEmpty. Operand 2621 states and 3365 transitions. [2020-10-26 22:35:32,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-26 22:35:32,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:35:32,011 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:35:32,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 22:35:32,011 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:35:32,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:35:32,012 INFO L82 PathProgramCache]: Analyzing trace with hash 903779694, now seen corresponding path program 1 times [2020-10-26 22:35:32,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:35:32,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1225752047] [2020-10-26 22:35:32,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:35:32,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:32,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:32,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:32,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:32,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 22:35:32,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:35:32,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 772 [2020-10-26 22:35:32,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:32,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:32,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-26 22:35:32,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 22:35:32,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:32,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:35:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:32,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:32,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:32,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:35:32,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:32,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:35:32,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:32,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:35:32,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:32,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:35:32,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:33,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:35:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:33,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:33,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:33,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:35:33,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:33,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 22:35:33,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:33,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:35:33,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:33,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:35:33,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:33,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:35:33,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:33,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:33,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:33,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 22:35:33,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:33,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-26 22:35:33,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:33,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:35:33,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:33,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 22:35:33,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:33,407 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-26 22:35:33,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1225752047] [2020-10-26 22:35:33,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:35:33,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:35:33,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646524218] [2020-10-26 22:35:33,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:35:33,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:35:33,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:35:33,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:35:33,411 INFO L87 Difference]: Start difference. First operand 2621 states and 3365 transitions. Second operand 5 states. [2020-10-26 22:35:35,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:35:35,642 INFO L93 Difference]: Finished difference Result 5073 states and 6568 transitions. [2020-10-26 22:35:35,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:35:35,646 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 273 [2020-10-26 22:35:35,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:35:35,660 INFO L225 Difference]: With dead ends: 5073 [2020-10-26 22:35:35,660 INFO L226 Difference]: Without dead ends: 2646 [2020-10-26 22:35:35,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:35:35,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2020-10-26 22:35:35,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2621. [2020-10-26 22:35:35,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2621 states. [2020-10-26 22:35:35,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2621 states to 2621 states and 3342 transitions. [2020-10-26 22:35:35,743 INFO L78 Accepts]: Start accepts. Automaton has 2621 states and 3342 transitions. Word has length 273 [2020-10-26 22:35:35,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:35:35,743 INFO L481 AbstractCegarLoop]: Abstraction has 2621 states and 3342 transitions. [2020-10-26 22:35:35,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:35:35,744 INFO L276 IsEmpty]: Start isEmpty. Operand 2621 states and 3342 transitions. [2020-10-26 22:35:35,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-26 22:35:35,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:35:35,751 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:35:35,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 22:35:35,751 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:35:35,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:35:35,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1409885909, now seen corresponding path program 1 times [2020-10-26 22:35:35,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:35:35,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18508756] [2020-10-26 22:35:35,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:35:35,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:35,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:35,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:36,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:37,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:37,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 22:35:37,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:35:37,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2086 [2020-10-26 22:35:37,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:37,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:37,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:35:37,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 22:35:37,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:38,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:35:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:38,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:38,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:38,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:35:38,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:38,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:35:38,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:38,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:35:38,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:38,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:35:38,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:38,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:35:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:38,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:38,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:38,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:35:38,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:38,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-26 22:35:38,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:38,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:35:38,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:38,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:35:38,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:38,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:35:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:38,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:38,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:38,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 22:35:38,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:38,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-26 22:35:38,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:38,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:38,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:35:38,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 22:35:38,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:38,504 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:35:38,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18508756] [2020-10-26 22:35:38,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:35:38,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:35:38,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199755080] [2020-10-26 22:35:38,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:35:38,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:35:38,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:35:38,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:35:38,507 INFO L87 Difference]: Start difference. First operand 2621 states and 3342 transitions. Second operand 7 states. [2020-10-26 22:35:42,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:35:42,645 INFO L93 Difference]: Finished difference Result 6653 states and 8875 transitions. [2020-10-26 22:35:42,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:35:42,646 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 273 [2020-10-26 22:35:42,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:35:42,669 INFO L225 Difference]: With dead ends: 6653 [2020-10-26 22:35:42,669 INFO L226 Difference]: Without dead ends: 4226 [2020-10-26 22:35:42,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:35:42,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2020-10-26 22:35:42,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 4016. [2020-10-26 22:35:42,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4016 states. [2020-10-26 22:35:42,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4016 states to 4016 states and 5165 transitions. [2020-10-26 22:35:42,803 INFO L78 Accepts]: Start accepts. Automaton has 4016 states and 5165 transitions. Word has length 273 [2020-10-26 22:35:42,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:35:42,803 INFO L481 AbstractCegarLoop]: Abstraction has 4016 states and 5165 transitions. [2020-10-26 22:35:42,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:35:42,803 INFO L276 IsEmpty]: Start isEmpty. Operand 4016 states and 5165 transitions. [2020-10-26 22:35:42,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-26 22:35:42,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:35:42,811 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:35:42,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 22:35:42,812 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:35:42,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:35:42,812 INFO L82 PathProgramCache]: Analyzing trace with hash 644868189, now seen corresponding path program 1 times [2020-10-26 22:35:42,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:35:42,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879052983] [2020-10-26 22:35:42,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:35:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:42,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:43,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:44,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:45,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:45,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-26 22:35:45,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:35:45,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2997 [2020-10-26 22:35:45,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:45,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:45,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:35:45,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 22:35:45,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:45,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:35:45,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:45,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:45,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:45,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:35:45,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:45,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:35:45,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:45,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:35:45,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:45,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:35:45,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:46,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:35:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:46,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:46,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:46,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:35:46,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:46,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-26 22:35:46,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:46,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:35:46,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:46,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:35:46,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:46,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:35:46,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:46,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:46,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:46,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:35:46,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:46,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-26 22:35:46,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:46,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:46,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:35:46,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:35:46,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:46,494 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:35:46,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879052983] [2020-10-26 22:35:46,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:35:46,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:35:46,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346971145] [2020-10-26 22:35:46,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:35:46,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:35:46,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:35:46,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:35:46,497 INFO L87 Difference]: Start difference. First operand 4016 states and 5165 transitions. Second operand 7 states. [2020-10-26 22:35:50,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:35:50,395 INFO L93 Difference]: Finished difference Result 9414 states and 12123 transitions. [2020-10-26 22:35:50,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:35:50,396 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 277 [2020-10-26 22:35:50,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:35:50,427 INFO L225 Difference]: With dead ends: 9414 [2020-10-26 22:35:50,427 INFO L226 Difference]: Without dead ends: 5592 [2020-10-26 22:35:50,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:35:50,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5592 states. [2020-10-26 22:35:50,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5592 to 5000. [2020-10-26 22:35:50,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5000 states. [2020-10-26 22:35:50,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5000 states to 5000 states and 6326 transitions. [2020-10-26 22:35:50,633 INFO L78 Accepts]: Start accepts. Automaton has 5000 states and 6326 transitions. Word has length 277 [2020-10-26 22:35:50,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:35:50,634 INFO L481 AbstractCegarLoop]: Abstraction has 5000 states and 6326 transitions. [2020-10-26 22:35:50,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:35:50,634 INFO L276 IsEmpty]: Start isEmpty. Operand 5000 states and 6326 transitions. [2020-10-26 22:35:50,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-26 22:35:50,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:35:50,644 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:35:50,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 22:35:50,644 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:35:50,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:35:50,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1816078821, now seen corresponding path program 1 times [2020-10-26 22:35:50,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:35:50,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600085787] [2020-10-26 22:35:50,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:35:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:50,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:51,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:51,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:51,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:51,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-26 22:35:51,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:35:51,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1262 [2020-10-26 22:35:51,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:51,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:51,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:35:51,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 22:35:51,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:52,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:35:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:52,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:52,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:52,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:35:52,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:52,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:35:52,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:52,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:35:52,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:52,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:35:52,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:52,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:35:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:52,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:52,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:52,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:35:52,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:52,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-26 22:35:52,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:52,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:35:52,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:52,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:35:52,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:52,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:35:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:52,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:52,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:52,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-26 22:35:52,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:52,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-26 22:35:52,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:52,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:52,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:35:52,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-26 22:35:52,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:52,501 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:35:52,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600085787] [2020-10-26 22:35:52,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:35:52,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:35:52,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931888] [2020-10-26 22:35:52,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:35:52,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:35:52,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:35:52,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:35:52,504 INFO L87 Difference]: Start difference. First operand 5000 states and 6326 transitions. Second operand 7 states. [2020-10-26 22:35:56,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:35:56,527 INFO L93 Difference]: Finished difference Result 11881 states and 16177 transitions. [2020-10-26 22:35:56,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:35:56,529 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 281 [2020-10-26 22:35:56,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:35:56,580 INFO L225 Difference]: With dead ends: 11881 [2020-10-26 22:35:56,580 INFO L226 Difference]: Without dead ends: 7075 [2020-10-26 22:35:56,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:35:56,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7075 states. [2020-10-26 22:35:56,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7075 to 6974. [2020-10-26 22:35:56,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6974 states. [2020-10-26 22:35:56,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6974 states to 6974 states and 9001 transitions. [2020-10-26 22:35:56,827 INFO L78 Accepts]: Start accepts. Automaton has 6974 states and 9001 transitions. Word has length 281 [2020-10-26 22:35:56,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:35:56,828 INFO L481 AbstractCegarLoop]: Abstraction has 6974 states and 9001 transitions. [2020-10-26 22:35:56,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:35:56,829 INFO L276 IsEmpty]: Start isEmpty. Operand 6974 states and 9001 transitions. [2020-10-26 22:35:56,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-26 22:35:56,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:35:56,838 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:35:56,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 22:35:56,838 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:35:56,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:35:56,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1027009389, now seen corresponding path program 1 times [2020-10-26 22:35:56,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:35:56,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952166497] [2020-10-26 22:35:56,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:35:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:56,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:57,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:57,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-26 22:35:57,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:57,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 491 [2020-10-26 22:35:57,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:57,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:57,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:35:57,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 22:35:57,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:57,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:35:57,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:57,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:57,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:57,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:35:57,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:57,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 22:35:57,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:57,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:35:57,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:57,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:35:57,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:57,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:35:57,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:57,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:57,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:57,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:35:57,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:57,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-26 22:35:57,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:57,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:35:57,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:57,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:35:57,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:57,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:35:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:57,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:58,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:58,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 22:35:58,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:58,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-26 22:35:58,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:58,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:58,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:35:58,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 22:35:58,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:58,152 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:35:58,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952166497] [2020-10-26 22:35:58,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:35:58,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:35:58,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156695035] [2020-10-26 22:35:58,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:35:58,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:35:58,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:35:58,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:35:58,156 INFO L87 Difference]: Start difference. First operand 6974 states and 9001 transitions. Second operand 8 states. [2020-10-26 22:36:02,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:36:02,799 INFO L93 Difference]: Finished difference Result 14425 states and 18612 transitions. [2020-10-26 22:36:02,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 22:36:02,800 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 285 [2020-10-26 22:36:02,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:36:02,827 INFO L225 Difference]: With dead ends: 14425 [2020-10-26 22:36:02,827 INFO L226 Difference]: Without dead ends: 7645 [2020-10-26 22:36:02,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-26 22:36:02,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7645 states. [2020-10-26 22:36:03,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7645 to 7603. [2020-10-26 22:36:03,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7603 states. [2020-10-26 22:36:03,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7603 states to 7603 states and 9407 transitions. [2020-10-26 22:36:03,027 INFO L78 Accepts]: Start accepts. Automaton has 7603 states and 9407 transitions. Word has length 285 [2020-10-26 22:36:03,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:36:03,028 INFO L481 AbstractCegarLoop]: Abstraction has 7603 states and 9407 transitions. [2020-10-26 22:36:03,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:36:03,028 INFO L276 IsEmpty]: Start isEmpty. Operand 7603 states and 9407 transitions. [2020-10-26 22:36:03,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-26 22:36:03,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:36:03,038 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:36:03,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 22:36:03,038 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:36:03,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:36:03,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1504569258, now seen corresponding path program 1 times [2020-10-26 22:36:03,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:36:03,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015936887] [2020-10-26 22:36:03,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:36:03,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:03,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:03,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:04,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:06,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:06,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-26 22:36:06,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:36:06,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3101 [2020-10-26 22:36:06,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:06,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 22:36:06,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:36:06,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 296 [2020-10-26 22:36:06,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:06,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:36:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:06,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:06,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:06,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:36:06,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:06,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 22:36:06,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:06,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:36:06,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:06,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:36:06,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:06,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:36:06,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:06,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:06,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:06,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:36:06,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:06,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-26 22:36:06,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:06,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:36:06,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:36:06,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-26 22:36:06,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:06,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:36:06,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:06,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:06,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:06,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:36:06,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:06,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-26 22:36:06,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:06,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:36:06,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:36:06,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 22:36:06,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:07,250 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 11 proven. 209 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 22:36:07,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015936887] [2020-10-26 22:36:07,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:36:07,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 22:36:07,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687103175] [2020-10-26 22:36:07,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 22:36:07,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:36:07,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 22:36:07,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:36:07,253 INFO L87 Difference]: Start difference. First operand 7603 states and 9407 transitions. Second operand 12 states. [2020-10-26 22:36:09,075 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2020-10-26 22:36:09,463 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82 [2020-10-26 22:36:09,853 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82 [2020-10-26 22:36:12,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:36:12,784 INFO L93 Difference]: Finished difference Result 19315 states and 25036 transitions. [2020-10-26 22:36:12,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-26 22:36:12,786 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 293 [2020-10-26 22:36:12,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:36:12,841 INFO L225 Difference]: With dead ends: 19315 [2020-10-26 22:36:12,841 INFO L226 Difference]: Without dead ends: 11764 [2020-10-26 22:36:12,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=186, Invalid=414, Unknown=0, NotChecked=0, Total=600 [2020-10-26 22:36:12,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11764 states. [2020-10-26 22:36:13,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11764 to 11447. [2020-10-26 22:36:13,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11447 states. [2020-10-26 22:36:13,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11447 states to 11447 states and 14184 transitions. [2020-10-26 22:36:13,164 INFO L78 Accepts]: Start accepts. Automaton has 11447 states and 14184 transitions. Word has length 293 [2020-10-26 22:36:13,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:36:13,165 INFO L481 AbstractCegarLoop]: Abstraction has 11447 states and 14184 transitions. [2020-10-26 22:36:13,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 22:36:13,165 INFO L276 IsEmpty]: Start isEmpty. Operand 11447 states and 14184 transitions. [2020-10-26 22:36:13,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-26 22:36:13,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:36:13,177 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:36:13,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 22:36:13,177 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:36:13,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:36:13,178 INFO L82 PathProgramCache]: Analyzing trace with hash -360489270, now seen corresponding path program 1 times [2020-10-26 22:36:13,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:36:13,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690466067] [2020-10-26 22:36:13,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:36:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:13,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:13,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:14,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:14,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-26 22:36:14,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:36:14,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1107 [2020-10-26 22:36:14,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:14,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:36:14,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 255 [2020-10-26 22:36:14,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-26 22:36:14,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:14,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:36:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:14,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:14,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:14,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:36:14,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:14,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:36:14,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:14,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:36:14,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:14,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:36:14,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:14,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:36:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:14,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:14,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:14,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-26 22:36:14,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:14,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 22:36:14,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:14,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:36:14,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:14,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:36:14,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:14,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-26 22:36:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:14,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:14,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:14,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 22:36:14,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:14,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-26 22:36:14,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:14,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:36:14,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:14,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-26 22:36:14,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:15,011 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-26 22:36:15,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690466067] [2020-10-26 22:36:15,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:36:15,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:36:15,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714139619] [2020-10-26 22:36:15,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:36:15,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:36:15,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:36:15,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:36:15,013 INFO L87 Difference]: Start difference. First operand 11447 states and 14184 transitions. Second operand 5 states. [2020-10-26 22:36:16,165 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-26 22:36:17,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:36:17,206 INFO L93 Difference]: Finished difference Result 21199 states and 26476 transitions. [2020-10-26 22:36:17,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:36:17,207 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 316 [2020-10-26 22:36:17,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:36:17,246 INFO L225 Difference]: With dead ends: 21199 [2020-10-26 22:36:17,246 INFO L226 Difference]: Without dead ends: 11473 [2020-10-26 22:36:17,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:36:17,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11473 states. [2020-10-26 22:36:17,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11473 to 11445. [2020-10-26 22:36:17,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11445 states. [2020-10-26 22:36:17,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11445 states to 11445 states and 14171 transitions. [2020-10-26 22:36:17,518 INFO L78 Accepts]: Start accepts. Automaton has 11445 states and 14171 transitions. Word has length 316 [2020-10-26 22:36:17,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:36:17,519 INFO L481 AbstractCegarLoop]: Abstraction has 11445 states and 14171 transitions. [2020-10-26 22:36:17,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:36:17,519 INFO L276 IsEmpty]: Start isEmpty. Operand 11445 states and 14171 transitions. [2020-10-26 22:36:17,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-10-26 22:36:17,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:36:17,534 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:36:17,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 22:36:17,534 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:36:17,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:36:17,534 INFO L82 PathProgramCache]: Analyzing trace with hash -840138339, now seen corresponding path program 1 times [2020-10-26 22:36:17,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:36:17,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614374540] [2020-10-26 22:36:17,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:36:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:17,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:17,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:17,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:18,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:20,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:21,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:22,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:22,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 360 [2020-10-26 22:36:22,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 22:36:22,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-26 22:36:22,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:22,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 22:36:22,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:36:22,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-26 22:36:22,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:22,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:36:22,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:22,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:22,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:22,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:36:22,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:22,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 22:36:22,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:22,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:36:22,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:22,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:36:22,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:22,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:36:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:22,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:22,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:22,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:22,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:36:22,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:36:22,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-26 22:36:22,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:22,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:36:22,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:36:22,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 22:36:22,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:23,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:36:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:23,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:23,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:23,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:23,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 22:36:23,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:36:23,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-26 22:36:23,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:23,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:36:23,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:36:23,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 22:36:23,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:23,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 22:36:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:23,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:23,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:23,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-26 22:36:23,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:23,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 22:36:23,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:23,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:36:23,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:36:23,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-26 22:36:23,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:23,656 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 325 proven. 4 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-26 22:36:23,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614374540] [2020-10-26 22:36:23,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:36:23,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:36:23,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515701562] [2020-10-26 22:36:23,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:36:23,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:36:23,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:36:23,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:36:23,658 INFO L87 Difference]: Start difference. First operand 11445 states and 14171 transitions. Second operand 8 states. [2020-10-26 22:36:26,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:36:26,873 INFO L93 Difference]: Finished difference Result 22402 states and 28555 transitions. [2020-10-26 22:36:26,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:36:26,874 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 344 [2020-10-26 22:36:26,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:36:26,915 INFO L225 Difference]: With dead ends: 22402 [2020-10-26 22:36:26,915 INFO L226 Difference]: Without dead ends: 11341 [2020-10-26 22:36:26,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-26 22:36:26,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11341 states. [2020-10-26 22:36:27,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11341 to 11191. [2020-10-26 22:36:27,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11191 states. [2020-10-26 22:36:27,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11191 states to 11191 states and 12962 transitions. [2020-10-26 22:36:27,216 INFO L78 Accepts]: Start accepts. Automaton has 11191 states and 12962 transitions. Word has length 344 [2020-10-26 22:36:27,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:36:27,216 INFO L481 AbstractCegarLoop]: Abstraction has 11191 states and 12962 transitions. [2020-10-26 22:36:27,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:36:27,216 INFO L276 IsEmpty]: Start isEmpty. Operand 11191 states and 12962 transitions. [2020-10-26 22:36:27,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-10-26 22:36:27,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:36:27,232 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:36:27,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 22:36:27,233 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:36:27,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:36:27,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1026982241, now seen corresponding path program 1 times [2020-10-26 22:36:27,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:36:27,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324995916] [2020-10-26 22:36:27,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:36:27,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:27,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:27,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:27,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:28,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:28,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:29,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:32,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:32,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 362 [2020-10-26 22:36:32,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 22:36:32,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4891 [2020-10-26 22:36:32,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:32,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-26 22:36:32,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:36:32,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 295 [2020-10-26 22:36:32,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:32,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:36:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:32,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:32,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:32,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:36:32,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:32,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:36:32,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:32,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:36:32,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:32,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:36:32,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:32,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:36:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:32,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:32,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:32,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:32,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:36:32,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:36:32,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-26 22:36:32,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:32,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:36:32,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:36:32,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 22:36:32,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:32,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:36:32,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:32,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:32,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:32,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:32,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 22:36:32,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:36:32,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-26 22:36:32,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:32,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:36:32,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:36:32,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 22:36:32,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:32,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 22:36:32,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:32,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:33,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:33,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:36:33,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:33,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-26 22:36:33,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:33,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:36:33,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:36:33,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:36:33,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:33,348 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 323 proven. 10 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-26 22:36:33,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324995916] [2020-10-26 22:36:33,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:36:33,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:36:33,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866774888] [2020-10-26 22:36:33,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 22:36:33,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:36:33,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 22:36:33,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 22:36:33,350 INFO L87 Difference]: Start difference. First operand 11191 states and 12962 transitions. Second operand 9 states. [2020-10-26 22:36:35,510 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2020-10-26 22:36:35,789 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2020-10-26 22:36:37,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:36:37,093 INFO L93 Difference]: Finished difference Result 20822 states and 24609 transitions. [2020-10-26 22:36:37,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 22:36:37,094 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 346 [2020-10-26 22:36:37,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:36:37,130 INFO L225 Difference]: With dead ends: 20822 [2020-10-26 22:36:37,130 INFO L226 Difference]: Without dead ends: 11329 [2020-10-26 22:36:37,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2020-10-26 22:36:37,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11329 states. [2020-10-26 22:36:37,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11329 to 11183. [2020-10-26 22:36:37,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11183 states. [2020-10-26 22:36:37,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11183 states to 11183 states and 12930 transitions. [2020-10-26 22:36:37,417 INFO L78 Accepts]: Start accepts. Automaton has 11183 states and 12930 transitions. Word has length 346 [2020-10-26 22:36:37,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:36:37,418 INFO L481 AbstractCegarLoop]: Abstraction has 11183 states and 12930 transitions. [2020-10-26 22:36:37,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 22:36:37,418 INFO L276 IsEmpty]: Start isEmpty. Operand 11183 states and 12930 transitions. [2020-10-26 22:36:37,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-10-26 22:36:37,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:36:37,433 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:36:37,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 22:36:37,434 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:36:37,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:36:37,435 INFO L82 PathProgramCache]: Analyzing trace with hash -585528831, now seen corresponding path program 1 times [2020-10-26 22:36:37,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:36:37,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030127925] [2020-10-26 22:36:37,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:36:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:37,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:37,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:38,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:39,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:39,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-26 22:36:39,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:36:39,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1591 [2020-10-26 22:36:39,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:39,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:36:39,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-26 22:36:39,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-26 22:36:39,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:39,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:36:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:39,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:39,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:39,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:36:39,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:39,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:36:39,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:39,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:36:39,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:39,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:36:39,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:39,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:36:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:39,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:39,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:39,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:36:39,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:39,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 22:36:39,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:39,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:36:39,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:39,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:36:39,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:39,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:36:39,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:39,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:39,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:39,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:36:39,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:39,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-26 22:36:39,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:39,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:36:39,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:39,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 22:36:39,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:39,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:36:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:39,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:39,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:39,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 22:36:39,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:39,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-26 22:36:39,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:39,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:36:39,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:36:39,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 22:36:39,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:39,689 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 332 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-26 22:36:39,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030127925] [2020-10-26 22:36:39,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:36:39,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:36:39,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895324917] [2020-10-26 22:36:39,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:36:39,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:36:39,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:36:39,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:36:39,692 INFO L87 Difference]: Start difference. First operand 11183 states and 12930 transitions. Second operand 7 states. [2020-10-26 22:36:43,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:36:43,265 INFO L93 Difference]: Finished difference Result 21814 states and 25521 transitions. [2020-10-26 22:36:43,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:36:43,268 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 354 [2020-10-26 22:36:43,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:36:43,300 INFO L225 Difference]: With dead ends: 21814 [2020-10-26 22:36:43,301 INFO L226 Difference]: Without dead ends: 12369 [2020-10-26 22:36:43,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:36:43,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12369 states. [2020-10-26 22:36:43,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12369 to 12333. [2020-10-26 22:36:43,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12333 states. [2020-10-26 22:36:43,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12333 states to 12333 states and 14289 transitions. [2020-10-26 22:36:43,555 INFO L78 Accepts]: Start accepts. Automaton has 12333 states and 14289 transitions. Word has length 354 [2020-10-26 22:36:43,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:36:43,555 INFO L481 AbstractCegarLoop]: Abstraction has 12333 states and 14289 transitions. [2020-10-26 22:36:43,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:36:43,556 INFO L276 IsEmpty]: Start isEmpty. Operand 12333 states and 14289 transitions. [2020-10-26 22:36:43,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2020-10-26 22:36:43,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:36:43,567 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:36:43,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 22:36:43,567 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:36:43,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:36:43,568 INFO L82 PathProgramCache]: Analyzing trace with hash 486725001, now seen corresponding path program 1 times [2020-10-26 22:36:43,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:36:43,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154968091] [2020-10-26 22:36:43,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:36:43,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:43,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:43,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:44,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:46,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:46,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 374 [2020-10-26 22:36:46,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:36:46,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2921 [2020-10-26 22:36:46,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:46,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:36:46,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-26 22:36:46,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 22:36:46,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:46,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:36:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:46,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:46,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:46,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:36:46,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:46,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:36:46,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:46,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:36:46,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:46,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:36:46,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:46,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:36:46,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:46,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:46,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:46,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:36:46,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:46,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 22:36:46,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:46,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:36:46,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:46,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:36:46,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:46,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:36:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:46,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:46,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:46,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:36:46,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:46,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-26 22:36:46,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:46,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:36:46,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:46,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 22:36:46,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:46,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:36:46,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:46,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:46,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:46,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:36:46,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:46,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-26 22:36:46,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:46,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:36:46,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:36:46,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:36:46,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:47,253 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 340 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-26 22:36:47,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154968091] [2020-10-26 22:36:47,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:36:47,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:36:47,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915400698] [2020-10-26 22:36:47,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:36:47,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:36:47,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:36:47,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:36:47,255 INFO L87 Difference]: Start difference. First operand 12333 states and 14289 transitions. Second operand 8 states. [2020-10-26 22:36:51,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:36:51,186 INFO L93 Difference]: Finished difference Result 24127 states and 28027 transitions. [2020-10-26 22:36:51,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 22:36:51,187 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 358 [2020-10-26 22:36:51,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:36:51,222 INFO L225 Difference]: With dead ends: 24127 [2020-10-26 22:36:51,222 INFO L226 Difference]: Without dead ends: 13532 [2020-10-26 22:36:51,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-26 22:36:51,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13532 states. [2020-10-26 22:36:51,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13532 to 12341. [2020-10-26 22:36:51,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12341 states. [2020-10-26 22:36:51,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12341 states to 12341 states and 14236 transitions. [2020-10-26 22:36:51,472 INFO L78 Accepts]: Start accepts. Automaton has 12341 states and 14236 transitions. Word has length 358 [2020-10-26 22:36:51,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:36:51,473 INFO L481 AbstractCegarLoop]: Abstraction has 12341 states and 14236 transitions. [2020-10-26 22:36:51,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:36:51,473 INFO L276 IsEmpty]: Start isEmpty. Operand 12341 states and 14236 transitions. [2020-10-26 22:36:51,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-10-26 22:36:51,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:36:51,487 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:36:51,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 22:36:51,487 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:36:51,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:36:51,487 INFO L82 PathProgramCache]: Analyzing trace with hash -410291247, now seen corresponding path program 1 times [2020-10-26 22:36:51,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:36:51,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436867752] [2020-10-26 22:36:51,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:36:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:51,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:51,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:52,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:54,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:54,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 378 [2020-10-26 22:36:54,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:36:54,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2490 [2020-10-26 22:36:54,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:54,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 22:36:54,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:36:54,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 319 [2020-10-26 22:36:54,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:54,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:36:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:54,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:54,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:54,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:36:54,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:54,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:36:54,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:54,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:36:54,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:54,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:36:54,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:54,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:36:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:54,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:54,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:54,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 22:36:54,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:54,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-26 22:36:54,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:54,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:36:54,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:36:54,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-26 22:36:54,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:54,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-26 22:36:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:54,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:54,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:54,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 22:36:54,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:54,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-26 22:36:54,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:54,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:36:54,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:36:54,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-26 22:36:54,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:54,914 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 107 proven. 26 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-26 22:36:54,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436867752] [2020-10-26 22:36:54,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:36:54,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:36:54,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858702252] [2020-10-26 22:36:54,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:36:54,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:36:54,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:36:54,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:36:54,916 INFO L87 Difference]: Start difference. First operand 12341 states and 14236 transitions. Second operand 8 states. [2020-10-26 22:36:59,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:36:59,080 INFO L93 Difference]: Finished difference Result 23754 states and 27467 transitions. [2020-10-26 22:36:59,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:36:59,081 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 364 [2020-10-26 22:36:59,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:36:59,102 INFO L225 Difference]: With dead ends: 23754 [2020-10-26 22:36:59,102 INFO L226 Difference]: Without dead ends: 13129 [2020-10-26 22:36:59,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:36:59,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13129 states. [2020-10-26 22:36:59,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13129 to 12339. [2020-10-26 22:36:59,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12339 states. [2020-10-26 22:36:59,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12339 states to 12339 states and 14221 transitions. [2020-10-26 22:36:59,334 INFO L78 Accepts]: Start accepts. Automaton has 12339 states and 14221 transitions. Word has length 364 [2020-10-26 22:36:59,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:36:59,335 INFO L481 AbstractCegarLoop]: Abstraction has 12339 states and 14221 transitions. [2020-10-26 22:36:59,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:36:59,335 INFO L276 IsEmpty]: Start isEmpty. Operand 12339 states and 14221 transitions. [2020-10-26 22:36:59,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-10-26 22:36:59,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:36:59,347 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:36:59,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 22:36:59,347 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:36:59,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:36:59,348 INFO L82 PathProgramCache]: Analyzing trace with hash -440320307, now seen corresponding path program 1 times [2020-10-26 22:36:59,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:36:59,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469629378] [2020-10-26 22:36:59,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:36:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:59,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:59,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:59,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:00,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:01,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:01,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 384 [2020-10-26 22:37:01,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:37:01,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2007 [2020-10-26 22:37:01,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:01,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:37:01,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-26 22:37:01,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 22:37:01,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:01,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:37:01,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:01,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:01,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:01,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:37:01,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:01,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:37:01,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:01,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:37:01,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:01,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:37:01,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:01,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:37:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:01,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:01,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:01,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:37:01,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:01,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 22:37:01,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:01,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:37:01,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:01,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:37:01,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:01,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:37:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:01,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:01,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:01,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 22:37:01,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:01,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 22:37:01,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:01,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:37:01,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:01,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 22:37:01,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:01,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 22:37:01,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:01,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:01,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:01,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:01,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 22:37:01,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:37:01,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-26 22:37:01,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:01,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:37:01,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:37:01,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 22:37:01,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:02,278 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 373 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-26 22:37:02,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469629378] [2020-10-26 22:37:02,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:37:02,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 22:37:02,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861566475] [2020-10-26 22:37:02,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 22:37:02,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:37:02,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 22:37:02,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:37:02,280 INFO L87 Difference]: Start difference. First operand 12339 states and 14221 transitions. Second operand 6 states. [2020-10-26 22:37:04,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:37:04,750 INFO L93 Difference]: Finished difference Result 22997 states and 26570 transitions. [2020-10-26 22:37:04,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 22:37:04,751 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 368 [2020-10-26 22:37:04,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:37:04,781 INFO L225 Difference]: With dead ends: 22997 [2020-10-26 22:37:04,782 INFO L226 Difference]: Without dead ends: 12381 [2020-10-26 22:37:04,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 22:37:04,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12381 states. [2020-10-26 22:37:05,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12381 to 12337. [2020-10-26 22:37:05,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12337 states. [2020-10-26 22:37:05,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12337 states to 12337 states and 14194 transitions. [2020-10-26 22:37:05,048 INFO L78 Accepts]: Start accepts. Automaton has 12337 states and 14194 transitions. Word has length 368 [2020-10-26 22:37:05,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:37:05,049 INFO L481 AbstractCegarLoop]: Abstraction has 12337 states and 14194 transitions. [2020-10-26 22:37:05,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 22:37:05,049 INFO L276 IsEmpty]: Start isEmpty. Operand 12337 states and 14194 transitions. [2020-10-26 22:37:05,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-10-26 22:37:05,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:37:05,059 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:37:05,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 22:37:05,059 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:37:05,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:37:05,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1862238707, now seen corresponding path program 1 times [2020-10-26 22:37:05,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:37:05,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989188349] [2020-10-26 22:37:05,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:37:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:05,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:05,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:05,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:05,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:06,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:10,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:10,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 384 [2020-10-26 22:37:10,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 22:37:10,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-26 22:37:10,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:10,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:37:10,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 22:37:10,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 22:37:10,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:10,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:37:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:10,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:10,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:10,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:37:10,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:10,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 22:37:10,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:10,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:37:10,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:10,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:37:10,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:10,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:37:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:10,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:10,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:10,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:37:10,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:10,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-26 22:37:10,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:10,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:37:10,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:10,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-26 22:37:10,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:10,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:37:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:10,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:10,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:10,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 22:37:10,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:10,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-26 22:37:10,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:10,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:37:10,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:37:10,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:37:10,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:10,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 22:37:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:10,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:10,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:10,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 22:37:10,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:10,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 22:37:10,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:10,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:37:10,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-26 22:37:10,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:37:10,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:11,111 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 270 proven. 73 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-26 22:37:11,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989188349] [2020-10-26 22:37:11,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:37:11,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:37:11,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943871771] [2020-10-26 22:37:11,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:37:11,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:37:11,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:37:11,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:37:11,114 INFO L87 Difference]: Start difference. First operand 12337 states and 14194 transitions. Second operand 7 states. [2020-10-26 22:37:15,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:37:15,384 INFO L93 Difference]: Finished difference Result 26803 states and 30805 transitions. [2020-10-26 22:37:15,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:37:15,385 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 368 [2020-10-26 22:37:15,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:37:15,424 INFO L225 Difference]: With dead ends: 26803 [2020-10-26 22:37:15,425 INFO L226 Difference]: Without dead ends: 14850 [2020-10-26 22:37:15,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:37:15,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14850 states. [2020-10-26 22:37:15,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14850 to 12709. [2020-10-26 22:37:15,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12709 states. [2020-10-26 22:37:15,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12709 states to 12709 states and 14576 transitions. [2020-10-26 22:37:15,706 INFO L78 Accepts]: Start accepts. Automaton has 12709 states and 14576 transitions. Word has length 368 [2020-10-26 22:37:15,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:37:15,706 INFO L481 AbstractCegarLoop]: Abstraction has 12709 states and 14576 transitions. [2020-10-26 22:37:15,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:37:15,706 INFO L276 IsEmpty]: Start isEmpty. Operand 12709 states and 14576 transitions. [2020-10-26 22:37:15,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-10-26 22:37:15,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:37:15,716 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:37:15,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 22:37:15,717 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:37:15,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:37:15,717 INFO L82 PathProgramCache]: Analyzing trace with hash -471611787, now seen corresponding path program 1 times [2020-10-26 22:37:15,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:37:15,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448146181] [2020-10-26 22:37:15,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:37:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:15,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:15,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:16,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:16,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:18,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:18,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-10-26 22:37:18,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:37:18,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2595 [2020-10-26 22:37:18,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:18,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:37:18,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-26 22:37:18,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-26 22:37:18,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:18,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:37:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:18,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:18,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:18,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:37:18,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:18,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:37:18,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:18,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:37:18,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:18,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:37:18,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:18,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:37:18,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:18,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:18,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:18,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:37:18,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:18,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 22:37:18,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:18,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:37:18,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:18,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:37:18,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:18,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:37:18,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:18,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:18,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:18,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-26 22:37:18,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:18,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 22:37:18,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:18,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:37:18,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:18,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 22:37:18,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:18,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-26 22:37:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:18,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:18,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:18,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:18,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-26 22:37:18,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:37:18,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-26 22:37:18,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:18,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:37:18,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:37:18,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-26 22:37:18,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:19,093 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 348 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-26 22:37:19,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448146181] [2020-10-26 22:37:19,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:37:19,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:37:19,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626652477] [2020-10-26 22:37:19,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:37:19,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:37:19,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:37:19,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:37:19,096 INFO L87 Difference]: Start difference. First operand 12709 states and 14576 transitions. Second operand 7 states. [2020-10-26 22:37:21,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:37:21,791 INFO L93 Difference]: Finished difference Result 23268 states and 27190 transitions. [2020-10-26 22:37:21,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:37:21,792 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 377 [2020-10-26 22:37:21,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:37:21,819 INFO L225 Difference]: With dead ends: 23268 [2020-10-26 22:37:21,819 INFO L226 Difference]: Without dead ends: 12655 [2020-10-26 22:37:21,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:37:21,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12655 states. [2020-10-26 22:37:22,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12655 to 12517. [2020-10-26 22:37:22,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12517 states. [2020-10-26 22:37:22,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12517 states to 12517 states and 14305 transitions. [2020-10-26 22:37:22,098 INFO L78 Accepts]: Start accepts. Automaton has 12517 states and 14305 transitions. Word has length 377 [2020-10-26 22:37:22,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:37:22,098 INFO L481 AbstractCegarLoop]: Abstraction has 12517 states and 14305 transitions. [2020-10-26 22:37:22,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:37:22,098 INFO L276 IsEmpty]: Start isEmpty. Operand 12517 states and 14305 transitions. [2020-10-26 22:37:22,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2020-10-26 22:37:22,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:37:22,106 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:37:22,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 22:37:22,106 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:37:22,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:37:22,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1467966081, now seen corresponding path program 1 times [2020-10-26 22:37:22,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:37:22,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209936880] [2020-10-26 22:37:22,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:37:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:22,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:22,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:22,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-10-26 22:37:22,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:22,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-26 22:37:22,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:22,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:37:22,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 317 [2020-10-26 22:37:22,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-26 22:37:22,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:22,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:37:22,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:22,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:22,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:22,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:37:22,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:22,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:37:22,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:22,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:37:22,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:22,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:37:22,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:22,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:37:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:22,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:22,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:22,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:37:22,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:22,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 22:37:22,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:22,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:37:22,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:22,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:37:22,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:22,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:37:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:22,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:23,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:23,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-26 22:37:23,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:23,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-26 22:37:23,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:23,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:37:23,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:23,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-26 22:37:23,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:23,143 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-26 22:37:23,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209936880] [2020-10-26 22:37:23,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:37:23,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:37:23,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888161772] [2020-10-26 22:37:23,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:37:23,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:37:23,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:37:23,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:37:23,145 INFO L87 Difference]: Start difference. First operand 12517 states and 14305 transitions. Second operand 5 states. [2020-10-26 22:37:25,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:37:25,733 INFO L93 Difference]: Finished difference Result 25628 states and 29518 transitions. [2020-10-26 22:37:25,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:37:25,736 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 379 [2020-10-26 22:37:25,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:37:25,768 INFO L225 Difference]: With dead ends: 25628 [2020-10-26 22:37:25,768 INFO L226 Difference]: Without dead ends: 15227 [2020-10-26 22:37:25,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:37:25,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15227 states. [2020-10-26 22:37:26,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15227 to 14047. [2020-10-26 22:37:26,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14047 states. [2020-10-26 22:37:26,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14047 states to 14047 states and 16155 transitions. [2020-10-26 22:37:26,099 INFO L78 Accepts]: Start accepts. Automaton has 14047 states and 16155 transitions. Word has length 379 [2020-10-26 22:37:26,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:37:26,100 INFO L481 AbstractCegarLoop]: Abstraction has 14047 states and 16155 transitions. [2020-10-26 22:37:26,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:37:26,100 INFO L276 IsEmpty]: Start isEmpty. Operand 14047 states and 16155 transitions. [2020-10-26 22:37:26,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-10-26 22:37:26,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:37:26,108 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:37:26,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 22:37:26,108 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:37:26,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:37:26,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1544897451, now seen corresponding path program 1 times [2020-10-26 22:37:26,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:37:26,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875481417] [2020-10-26 22:37:26,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:37:26,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:26,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:26,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:26,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:26,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:27,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:31,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:31,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 405 [2020-10-26 22:37:31,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 22:37:31,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-26 22:37:31,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:31,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:37:31,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-26 22:37:31,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 22:37:31,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:31,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:37:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:31,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:31,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:31,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:37:31,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:31,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:37:31,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:31,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:37:31,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:31,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:37:31,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:31,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:37:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:31,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:31,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:31,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 22:37:31,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:31,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-26 22:37:31,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:31,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:37:31,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:31,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-26 22:37:31,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:31,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-26 22:37:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:31,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:31,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:31,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 22:37:31,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:31,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-26 22:37:31,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:31,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:37:31,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:37:31,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:37:31,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:31,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-26 22:37:31,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:31,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:31,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:31,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 22:37:31,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:31,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 22:37:31,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:31,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:37:31,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-26 22:37:31,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:37:31,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:31,971 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 270 proven. 73 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-26 22:37:31,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875481417] [2020-10-26 22:37:31,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:37:31,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:37:31,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448122420] [2020-10-26 22:37:31,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:37:31,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:37:31,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:37:31,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:37:31,973 INFO L87 Difference]: Start difference. First operand 14047 states and 16155 transitions. Second operand 8 states. [2020-10-26 22:37:36,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:37:36,918 INFO L93 Difference]: Finished difference Result 27736 states and 32002 transitions. [2020-10-26 22:37:36,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 22:37:36,920 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 389 [2020-10-26 22:37:36,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:37:36,949 INFO L225 Difference]: With dead ends: 27736 [2020-10-26 22:37:36,949 INFO L226 Difference]: Without dead ends: 15805 [2020-10-26 22:37:36,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-10-26 22:37:36,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15805 states. [2020-10-26 22:37:37,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15805 to 15755. [2020-10-26 22:37:37,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15755 states. [2020-10-26 22:37:37,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15755 states to 15755 states and 17990 transitions. [2020-10-26 22:37:37,272 INFO L78 Accepts]: Start accepts. Automaton has 15755 states and 17990 transitions. Word has length 389 [2020-10-26 22:37:37,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:37:37,272 INFO L481 AbstractCegarLoop]: Abstraction has 15755 states and 17990 transitions. [2020-10-26 22:37:37,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:37:37,272 INFO L276 IsEmpty]: Start isEmpty. Operand 15755 states and 17990 transitions. [2020-10-26 22:37:37,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-10-26 22:37:37,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:37:37,284 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:37:37,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-26 22:37:37,284 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:37:37,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:37:37,285 INFO L82 PathProgramCache]: Analyzing trace with hash 2132405441, now seen corresponding path program 1 times [2020-10-26 22:37:37,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:37:37,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202790043] [2020-10-26 22:37:37,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:37:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:37,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:37,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:38,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:40,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:40,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 409 [2020-10-26 22:37:40,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:37:40,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3022 [2020-10-26 22:37:40,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:40,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:37:40,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-26 22:37:40,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 22:37:40,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:40,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:37:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:40,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:40,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:40,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:37:40,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:40,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:37:40,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:40,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:37:40,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:40,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:37:40,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:40,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:37:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:40,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:40,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:40,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:37:40,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:40,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 22:37:40,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:40,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:37:40,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:40,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:37:40,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:40,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:37:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:40,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:40,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:40,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:37:40,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:40,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-26 22:37:40,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:40,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:37:40,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:40,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-26 22:37:40,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:40,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 22:37:40,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:40,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:41,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:41,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:37:41,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:41,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-26 22:37:41,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:41,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:37:41,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:37:41,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:37:41,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:41,301 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 340 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-26 22:37:41,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202790043] [2020-10-26 22:37:41,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:37:41,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:37:41,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832729569] [2020-10-26 22:37:41,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:37:41,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:37:41,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:37:41,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:37:41,303 INFO L87 Difference]: Start difference. First operand 15755 states and 17990 transitions. Second operand 7 states. [2020-10-26 22:37:42,918 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-26 22:37:45,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:37:45,399 INFO L93 Difference]: Finished difference Result 29789 states and 35481 transitions. [2020-10-26 22:37:45,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:37:45,400 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 393 [2020-10-26 22:37:45,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:37:45,441 INFO L225 Difference]: With dead ends: 29789 [2020-10-26 22:37:45,441 INFO L226 Difference]: Without dead ends: 16532 [2020-10-26 22:37:45,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:37:45,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16532 states. [2020-10-26 22:37:45,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16532 to 15951. [2020-10-26 22:37:45,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15951 states. [2020-10-26 22:37:45,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15951 states to 15951 states and 18127 transitions. [2020-10-26 22:37:45,721 INFO L78 Accepts]: Start accepts. Automaton has 15951 states and 18127 transitions. Word has length 393 [2020-10-26 22:37:45,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:37:45,721 INFO L481 AbstractCegarLoop]: Abstraction has 15951 states and 18127 transitions. [2020-10-26 22:37:45,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:37:45,722 INFO L276 IsEmpty]: Start isEmpty. Operand 15951 states and 18127 transitions. [2020-10-26 22:37:45,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2020-10-26 22:37:45,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:37:45,730 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:37:45,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-26 22:37:45,730 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:37:45,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:37:45,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1846289375, now seen corresponding path program 1 times [2020-10-26 22:37:45,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:37:45,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422915993] [2020-10-26 22:37:45,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:37:45,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:45,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:45,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:46,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:47,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:48,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:48,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 412 [2020-10-26 22:37:48,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:37:48,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2966 [2020-10-26 22:37:48,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:48,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:37:48,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 258 [2020-10-26 22:37:48,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-26 22:37:48,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:48,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:37:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:48,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:48,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:48,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:37:48,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:48,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:37:48,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:48,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:37:48,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:48,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:37:48,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:48,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:37:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:48,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:48,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:48,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:37:48,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:48,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 22:37:48,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:48,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:37:48,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:48,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:37:48,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:49,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:37:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:49,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:49,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:49,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-26 22:37:49,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:49,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-26 22:37:49,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:49,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:37:49,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:49,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:37:49,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:49,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-26 22:37:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:49,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:49,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:49,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:49,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-26 22:37:49,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:37:49,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-26 22:37:49,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:49,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:37:49,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:37:49,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-26 22:37:49,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:49,488 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 348 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-26 22:37:49,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422915993] [2020-10-26 22:37:49,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:37:49,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:37:49,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940221371] [2020-10-26 22:37:49,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:37:49,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:37:49,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:37:49,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:37:49,491 INFO L87 Difference]: Start difference. First operand 15951 states and 18127 transitions. Second operand 7 states. [2020-10-26 22:37:51,020 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-26 22:37:52,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:37:52,502 INFO L93 Difference]: Finished difference Result 29588 states and 34269 transitions. [2020-10-26 22:37:52,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:37:52,503 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 396 [2020-10-26 22:37:52,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:37:52,550 INFO L225 Difference]: With dead ends: 29588 [2020-10-26 22:37:52,550 INFO L226 Difference]: Without dead ends: 16121 [2020-10-26 22:37:52,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:37:52,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16121 states. [2020-10-26 22:37:52,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16121 to 15949. [2020-10-26 22:37:52,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15949 states. [2020-10-26 22:37:52,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15949 states to 15949 states and 18100 transitions. [2020-10-26 22:37:52,985 INFO L78 Accepts]: Start accepts. Automaton has 15949 states and 18100 transitions. Word has length 396 [2020-10-26 22:37:52,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:37:52,985 INFO L481 AbstractCegarLoop]: Abstraction has 15949 states and 18100 transitions. [2020-10-26 22:37:52,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:37:52,985 INFO L276 IsEmpty]: Start isEmpty. Operand 15949 states and 18100 transitions. [2020-10-26 22:37:52,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2020-10-26 22:37:52,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:37:52,997 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:37:52,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-26 22:37:52,997 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:37:52,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:37:52,997 INFO L82 PathProgramCache]: Analyzing trace with hash -846826377, now seen corresponding path program 1 times [2020-10-26 22:37:52,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:37:52,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797147455] [2020-10-26 22:37:52,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:37:53,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:53,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:53,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:55,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:56,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:56,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-10-26 22:37:56,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:37:56,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3617 [2020-10-26 22:37:56,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:56,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 22:37:56,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:37:56,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 343 [2020-10-26 22:37:56,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:56,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:37:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:56,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:56,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:56,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:37:56,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:56,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:37:56,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:56,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:37:56,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:56,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:37:56,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:56,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:37:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:56,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:57,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:57,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:37:57,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:57,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-26 22:37:57,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:57,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:37:57,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:37:57,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-26 22:37:57,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:57,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:37:57,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:57,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:57,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:57,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:37:57,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:57,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-26 22:37:57,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:57,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:37:57,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:37:57,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 22:37:57,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:57,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:37:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:57,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:57,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:57,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-26 22:37:57,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:57,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-26 22:37:57,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:57,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:37:57,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:37:57,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-26 22:37:57,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:57,532 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 204 proven. 199 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-26 22:37:57,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797147455] [2020-10-26 22:37:57,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:37:57,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 22:37:57,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414461041] [2020-10-26 22:37:57,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 22:37:57,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:37:57,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 22:37:57,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-26 22:37:57,534 INFO L87 Difference]: Start difference. First operand 15949 states and 18100 transitions. Second operand 10 states. [2020-10-26 22:38:04,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:38:04,941 INFO L93 Difference]: Finished difference Result 32615 states and 37714 transitions. [2020-10-26 22:38:04,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 22:38:04,943 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 406 [2020-10-26 22:38:04,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:38:04,976 INFO L225 Difference]: With dead ends: 32615 [2020-10-26 22:38:04,977 INFO L226 Difference]: Without dead ends: 18972 [2020-10-26 22:38:04,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2020-10-26 22:38:05,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18972 states. [2020-10-26 22:38:05,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18972 to 18255. [2020-10-26 22:38:05,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18255 states. [2020-10-26 22:38:05,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18255 states to 18255 states and 20777 transitions. [2020-10-26 22:38:05,264 INFO L78 Accepts]: Start accepts. Automaton has 18255 states and 20777 transitions. Word has length 406 [2020-10-26 22:38:05,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:38:05,265 INFO L481 AbstractCegarLoop]: Abstraction has 18255 states and 20777 transitions. [2020-10-26 22:38:05,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 22:38:05,265 INFO L276 IsEmpty]: Start isEmpty. Operand 18255 states and 20777 transitions. [2020-10-26 22:38:05,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2020-10-26 22:38:05,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:38:05,273 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:38:05,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-26 22:38:05,274 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:38:05,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:38:05,274 INFO L82 PathProgramCache]: Analyzing trace with hash 904568982, now seen corresponding path program 1 times [2020-10-26 22:38:05,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:38:05,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449071251] [2020-10-26 22:38:05,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:38:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:05,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:05,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:05,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:07,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:07,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 439 [2020-10-26 22:38:07,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:38:07,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2165 [2020-10-26 22:38:07,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:07,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 22:38:07,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:38:07,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 430 [2020-10-26 22:38:07,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:07,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:38:07,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:07,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:07,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:07,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:38:07,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:07,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:38:07,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:07,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:38:07,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:07,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:38:07,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:07,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:38:07,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:07,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:07,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:07,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:38:07,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:07,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-26 22:38:07,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:07,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:38:07,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:38:07,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 22:38:07,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:07,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:38:07,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:07,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:08,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:08,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 22:38:08,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:08,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-26 22:38:08,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:08,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:38:08,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:38:08,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-26 22:38:08,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:08,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-26 22:38:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:08,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:08,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:08,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 22:38:08,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:08,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-26 22:38:08,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:08,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:38:08,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:38:08,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 22:38:08,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:08,565 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 10 proven. 199 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2020-10-26 22:38:08,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449071251] [2020-10-26 22:38:08,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:38:08,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 22:38:08,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563331018] [2020-10-26 22:38:08,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 22:38:08,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:38:08,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 22:38:08,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-26 22:38:08,567 INFO L87 Difference]: Start difference. First operand 18255 states and 20777 transitions. Second operand 10 states. [2020-10-26 22:38:16,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:38:16,715 INFO L93 Difference]: Finished difference Result 27944 states and 32439 transitions. [2020-10-26 22:38:16,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 22:38:16,716 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 423 [2020-10-26 22:38:16,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:38:16,771 INFO L225 Difference]: With dead ends: 27944 [2020-10-26 22:38:16,771 INFO L226 Difference]: Without dead ends: 27941 [2020-10-26 22:38:16,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-10-26 22:38:16,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27941 states. [2020-10-26 22:38:17,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27941 to 26777. [2020-10-26 22:38:17,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26777 states. [2020-10-26 22:38:17,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26777 states to 26777 states and 30716 transitions. [2020-10-26 22:38:17,208 INFO L78 Accepts]: Start accepts. Automaton has 26777 states and 30716 transitions. Word has length 423 [2020-10-26 22:38:17,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:38:17,209 INFO L481 AbstractCegarLoop]: Abstraction has 26777 states and 30716 transitions. [2020-10-26 22:38:17,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 22:38:17,209 INFO L276 IsEmpty]: Start isEmpty. Operand 26777 states and 30716 transitions. [2020-10-26 22:38:17,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2020-10-26 22:38:17,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:38:17,216 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:38:17,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-26 22:38:17,216 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:38:17,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:38:17,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1483033083, now seen corresponding path program 1 times [2020-10-26 22:38:17,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:38:17,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678180513] [2020-10-26 22:38:17,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:38:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:17,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:17,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:18,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:18,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 438 [2020-10-26 22:38:18,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:38:18,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 958 [2020-10-26 22:38:18,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:18,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:38:18,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 363 [2020-10-26 22:38:18,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 22:38:18,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:18,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:38:18,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:18,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:18,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:18,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:38:18,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:18,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:38:18,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:18,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:38:18,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:18,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:38:18,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:18,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:38:18,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:18,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:18,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:18,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-26 22:38:18,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:18,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 22:38:18,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:18,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:38:18,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:18,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:38:18,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:18,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-26 22:38:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:18,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:18,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:18,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-26 22:38:18,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:18,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-26 22:38:18,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:18,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:38:18,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:18,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-26 22:38:18,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:18,845 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-10-26 22:38:18,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678180513] [2020-10-26 22:38:18,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:38:18,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:38:18,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208621275] [2020-10-26 22:38:18,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:38:18,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:38:18,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:38:18,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:38:18,847 INFO L87 Difference]: Start difference. First operand 26777 states and 30716 transitions. Second operand 5 states.