/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 06:51:28,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 06:51:28,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 06:51:28,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 06:51:28,358 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 06:51:28,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 06:51:28,361 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 06:51:28,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 06:51:28,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 06:51:28,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 06:51:28,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 06:51:28,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 06:51:28,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 06:51:28,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 06:51:28,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 06:51:28,375 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 06:51:28,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 06:51:28,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 06:51:28,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 06:51:28,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 06:51:28,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 06:51:28,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 06:51:28,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 06:51:28,399 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 06:51:28,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 06:51:28,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 06:51:28,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 06:51:28,425 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 06:51:28,426 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 06:51:28,427 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 06:51:28,429 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 06:51:28,430 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 06:51:28,431 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 06:51:28,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 06:51:28,433 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 06:51:28,433 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 06:51:28,434 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 06:51:28,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 06:51:28,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 06:51:28,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 06:51:28,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 06:51:28,438 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 06:51:28,465 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 06:51:28,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 06:51:28,467 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 06:51:28,468 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 06:51:28,468 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 06:51:28,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 06:51:28,468 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 06:51:28,469 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 06:51:28,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 06:51:28,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 06:51:28,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 06:51:28,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 06:51:28,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 06:51:28,470 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 06:51:28,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 06:51:28,470 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 06:51:28,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 06:51:28,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 06:51:28,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 06:51:28,471 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 06:51:28,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 06:51:28,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:51:28,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 06:51:28,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 06:51:28,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 06:51:28,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 06:51:28,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 06:51:28,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 06:51:28,473 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 06:51:28,474 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 06:51:28,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 06:51:28,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 06:51:28,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 06:51:28,918 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 06:51:28,919 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 06:51:28,920 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label54.c [2020-10-29 06:51:29,002 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cc8a7ea2/76d73e368a3c4f7ba8ea9c54f757f7fb/FLAGbc795af73 [2020-10-29 06:51:29,836 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 06:51:29,836 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label54.c [2020-10-29 06:51:29,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cc8a7ea2/76d73e368a3c4f7ba8ea9c54f757f7fb/FLAGbc795af73 [2020-10-29 06:51:30,001 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cc8a7ea2/76d73e368a3c4f7ba8ea9c54f757f7fb [2020-10-29 06:51:30,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 06:51:30,015 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 06:51:30,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 06:51:30,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 06:51:30,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 06:51:30,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:51:30" (1/1) ... [2020-10-29 06:51:30,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@383ca202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:51:30, skipping insertion in model container [2020-10-29 06:51:30,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:51:30" (1/1) ... [2020-10-29 06:51:30,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 06:51:30,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 06:51:30,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:51:30,739 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 06:51:31,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:51:31,032 INFO L208 MainTranslator]: Completed translation [2020-10-29 06:51:31,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:51:31 WrapperNode [2020-10-29 06:51:31,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 06:51:31,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 06:51:31,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 06:51:31,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 06:51:31,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:51:31" (1/1) ... [2020-10-29 06:51:31,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:51:31" (1/1) ... [2020-10-29 06:51:31,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:51:31" (1/1) ... [2020-10-29 06:51:31,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:51:31" (1/1) ... [2020-10-29 06:51:31,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:51:31" (1/1) ... [2020-10-29 06:51:31,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:51:31" (1/1) ... [2020-10-29 06:51:31,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:51:31" (1/1) ... [2020-10-29 06:51:31,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 06:51:31,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 06:51:31,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 06:51:31,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 06:51:31,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:51:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:51:31,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 06:51:31,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 06:51:31,331 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 06:51:31,332 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 06:51:31,332 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 06:51:31,333 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 06:51:31,333 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 06:51:31,333 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 06:51:31,333 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 06:51:31,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 06:51:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 06:51:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 06:51:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 06:51:31,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 06:51:31,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 06:51:31,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 06:51:31,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 06:51:31,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 06:51:31,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 06:51:33,458 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 06:51:33,459 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 06:51:33,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:51:33 BoogieIcfgContainer [2020-10-29 06:51:33,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 06:51:33,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 06:51:33,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 06:51:33,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 06:51:33,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:51:30" (1/3) ... [2020-10-29 06:51:33,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5400ff39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:51:33, skipping insertion in model container [2020-10-29 06:51:33,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:51:31" (2/3) ... [2020-10-29 06:51:33,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5400ff39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:51:33, skipping insertion in model container [2020-10-29 06:51:33,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:51:33" (3/3) ... [2020-10-29 06:51:33,472 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label54.c [2020-10-29 06:51:33,486 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 06:51:33,492 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 06:51:33,508 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 06:51:33,540 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 06:51:33,541 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 06:51:33,541 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 06:51:33,541 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 06:51:33,541 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 06:51:33,541 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 06:51:33,542 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 06:51:33,542 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 06:51:33,568 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-29 06:51:33,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 06:51:33,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:33,579 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] [2020-10-29 06:51:33,579 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:33,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:33,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1077838480, now seen corresponding path program 1 times [2020-10-29 06:51:33,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:33,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27265033] [2020-10-29 06:51:33,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:33,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:33,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:34,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:34,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 06:51:34,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:34,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 688 [2020-10-29 06:51:34,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:34,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:34,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:51:34,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:51:34,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 06:51:34,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-29 06:51:34,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:34,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:34,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:34,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:34,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:34,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:34,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 06:51:34,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:34,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:34,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:34,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:34,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:51:34,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:51:34,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:51:34,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27265033] [2020-10-29 06:51:34,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:51:34,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 06:51:34,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427591020] [2020-10-29 06:51:34,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:51:34,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:34,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:51:34,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:51:34,861 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 5 states. [2020-10-29 06:51:38,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:38,347 INFO L93 Difference]: Finished difference Result 798 states and 1400 transitions. [2020-10-29 06:51:38,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:51:38,349 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-10-29 06:51:38,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:38,367 INFO L225 Difference]: With dead ends: 798 [2020-10-29 06:51:38,367 INFO L226 Difference]: Without dead ends: 438 [2020-10-29 06:51:38,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:51:38,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-10-29 06:51:38,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 423. [2020-10-29 06:51:38,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2020-10-29 06:51:38,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 674 transitions. [2020-10-29 06:51:38,472 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 674 transitions. Word has length 44 [2020-10-29 06:51:38,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:38,473 INFO L481 AbstractCegarLoop]: Abstraction has 423 states and 674 transitions. [2020-10-29 06:51:38,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:51:38,474 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 674 transitions. [2020-10-29 06:51:38,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-29 06:51:38,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:38,479 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:51:38,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 06:51:38,480 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:38,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:38,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1996150572, now seen corresponding path program 1 times [2020-10-29 06:51:38,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:38,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463865590] [2020-10-29 06:51:38,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:38,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:38,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:39,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:40,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:40,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 06:51:40,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:51:40,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2231 [2020-10-29 06:51:40,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:40,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:40,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:51:40,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:51:40,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 06:51:40,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:51:40,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:40,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:40,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:40,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:40,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:40,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 06:51:40,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:40,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:40,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:40,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:40,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:51:40,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 06:51:40,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:41,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:41,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:41,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 06:51:41,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:41,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-29 06:51:41,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:41,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:41,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:41,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:41,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 06:51:41,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:51:41,304 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:51:41,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463865590] [2020-10-29 06:51:41,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:51:41,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:51:41,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416058173] [2020-10-29 06:51:41,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:51:41,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:41,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:51:41,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:51:41,313 INFO L87 Difference]: Start difference. First operand 423 states and 674 transitions. Second operand 7 states. [2020-10-29 06:51:44,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:44,866 INFO L93 Difference]: Finished difference Result 1264 states and 2054 transitions. [2020-10-29 06:51:44,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:51:44,872 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2020-10-29 06:51:44,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:44,881 INFO L225 Difference]: With dead ends: 1264 [2020-10-29 06:51:44,881 INFO L226 Difference]: Without dead ends: 847 [2020-10-29 06:51:44,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:51:44,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2020-10-29 06:51:44,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 632. [2020-10-29 06:51:44,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 632 states. [2020-10-29 06:51:45,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 939 transitions. [2020-10-29 06:51:45,007 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 939 transitions. Word has length 113 [2020-10-29 06:51:45,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:45,008 INFO L481 AbstractCegarLoop]: Abstraction has 632 states and 939 transitions. [2020-10-29 06:51:45,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:51:45,008 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 939 transitions. [2020-10-29 06:51:45,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-29 06:51:45,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:45,017 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:51:45,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 06:51:45,017 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:45,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:45,020 INFO L82 PathProgramCache]: Analyzing trace with hash -553479380, now seen corresponding path program 1 times [2020-10-29 06:51:45,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:45,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765746745] [2020-10-29 06:51:45,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:45,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:45,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:46,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:46,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:46,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 06:51:46,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:51:46,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1469 [2020-10-29 06:51:46,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:46,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:46,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:51:46,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:51:46,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 06:51:46,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:51:46,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:46,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:46,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:46,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:46,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:46,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 06:51:46,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:46,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:46,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:46,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:46,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:51:46,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:51:46,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:46,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:46,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:46,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 06:51:46,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:46,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-29 06:51:46,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:46,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:46,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:46,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:46,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 06:51:46,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:46,942 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:51:46,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765746745] [2020-10-29 06:51:46,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:51:46,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:51:46,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354046862] [2020-10-29 06:51:46,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:51:46,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:46,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:51:46,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:51:46,950 INFO L87 Difference]: Start difference. First operand 632 states and 939 transitions. Second operand 7 states. [2020-10-29 06:51:50,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:50,168 INFO L93 Difference]: Finished difference Result 1707 states and 2570 transitions. [2020-10-29 06:51:50,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:51:50,171 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-10-29 06:51:50,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:50,184 INFO L225 Difference]: With dead ends: 1707 [2020-10-29 06:51:50,184 INFO L226 Difference]: Without dead ends: 1081 [2020-10-29 06:51:50,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:51:50,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2020-10-29 06:51:50,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 1041. [2020-10-29 06:51:50,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1041 states. [2020-10-29 06:51:50,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1457 transitions. [2020-10-29 06:51:50,258 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1457 transitions. Word has length 116 [2020-10-29 06:51:50,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:50,259 INFO L481 AbstractCegarLoop]: Abstraction has 1041 states and 1457 transitions. [2020-10-29 06:51:50,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:51:50,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1457 transitions. [2020-10-29 06:51:50,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-29 06:51:50,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:50,266 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:51:50,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 06:51:50,266 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:50,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:50,267 INFO L82 PathProgramCache]: Analyzing trace with hash -234073337, now seen corresponding path program 1 times [2020-10-29 06:51:50,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:50,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743380418] [2020-10-29 06:51:50,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:50,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:50,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:51,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:51,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-29 06:51:51,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:51:51,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1125 [2020-10-29 06:51:51,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:51,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:51,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:51:51,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:51:51,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-29 06:51:51,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:51:51,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:51,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:51,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:51,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:51,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:51,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:51,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 06:51:51,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:51,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:51,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:51,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:51,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:51:51,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:51,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:51,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:51,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:52,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:52,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 06:51:52,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:52,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-10-29 06:51:52,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:52,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:52,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:52,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:52,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-29 06:51:52,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:52,194 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:51:52,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743380418] [2020-10-29 06:51:52,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:51:52,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:51:52,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837668703] [2020-10-29 06:51:52,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:51:52,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:52,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:51:52,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:51:52,198 INFO L87 Difference]: Start difference. First operand 1041 states and 1457 transitions. Second operand 7 states. [2020-10-29 06:51:56,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:56,081 INFO L93 Difference]: Finished difference Result 3116 states and 4492 transitions. [2020-10-29 06:51:56,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:51:56,082 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 188 [2020-10-29 06:51:56,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:56,099 INFO L225 Difference]: With dead ends: 3116 [2020-10-29 06:51:56,099 INFO L226 Difference]: Without dead ends: 2081 [2020-10-29 06:51:56,102 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 [2020-10-29 06:51:56,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2081 states. [2020-10-29 06:51:56,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2081 to 2034. [2020-10-29 06:51:56,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2034 states. [2020-10-29 06:51:56,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2034 states to 2034 states and 2675 transitions. [2020-10-29 06:51:56,185 INFO L78 Accepts]: Start accepts. Automaton has 2034 states and 2675 transitions. Word has length 188 [2020-10-29 06:51:56,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:56,187 INFO L481 AbstractCegarLoop]: Abstraction has 2034 states and 2675 transitions. [2020-10-29 06:51:56,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:51:56,188 INFO L276 IsEmpty]: Start isEmpty. Operand 2034 states and 2675 transitions. [2020-10-29 06:51:56,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-29 06:51:56,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:56,196 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:51:56,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 06:51:56,196 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:56,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:56,197 INFO L82 PathProgramCache]: Analyzing trace with hash 634643810, now seen corresponding path program 1 times [2020-10-29 06:51:56,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:56,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098359132] [2020-10-29 06:51:56,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:56,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:56,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:57,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:57,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:57,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-29 06:51:57,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:51:57,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1179 [2020-10-29 06:51:57,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:57,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:57,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:57,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-29 06:51:57,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 06:51:57,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:57,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:57,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:57,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:57,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:57,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:57,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:57,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 06:51:57,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:57,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:57,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:57,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:57,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:57,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:57,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:57,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:57,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:57,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:57,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:51:57,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:57,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-29 06:51:57,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:57,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:57,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:57,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:57,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:51:57,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:51:57,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:51:57,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:57,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:58,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:58,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 06:51:58,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:58,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-29 06:51:58,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:58,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:58,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:58,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:58,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 06:51:58,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:58,171 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 141 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:51:58,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098359132] [2020-10-29 06:51:58,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:51:58,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:51:58,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264942863] [2020-10-29 06:51:58,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:51:58,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:58,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:51:58,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:51:58,177 INFO L87 Difference]: Start difference. First operand 2034 states and 2675 transitions. Second operand 8 states. [2020-10-29 06:52:01,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:01,709 INFO L93 Difference]: Finished difference Result 4672 states and 6302 transitions. [2020-10-29 06:52:01,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:52:01,710 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 232 [2020-10-29 06:52:01,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:01,728 INFO L225 Difference]: With dead ends: 4672 [2020-10-29 06:52:01,729 INFO L226 Difference]: Without dead ends: 2832 [2020-10-29 06:52:01,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-29 06:52:01,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2020-10-29 06:52:01,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 2814. [2020-10-29 06:52:01,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2814 states. [2020-10-29 06:52:01,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2814 states to 2814 states and 3721 transitions. [2020-10-29 06:52:01,847 INFO L78 Accepts]: Start accepts. Automaton has 2814 states and 3721 transitions. Word has length 232 [2020-10-29 06:52:01,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:01,849 INFO L481 AbstractCegarLoop]: Abstraction has 2814 states and 3721 transitions. [2020-10-29 06:52:01,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:52:01,849 INFO L276 IsEmpty]: Start isEmpty. Operand 2814 states and 3721 transitions. [2020-10-29 06:52:01,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-29 06:52:01,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:01,856 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:52:01,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 06:52:01,856 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:01,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:01,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1251127978, now seen corresponding path program 1 times [2020-10-29 06:52:01,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:01,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336552992] [2020-10-29 06:52:01,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:01,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:02,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:02,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:03,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:05,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:05,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-29 06:52:05,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:52:05,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3147 [2020-10-29 06:52:05,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:05,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:05,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 06:52:05,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:52:05,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-29 06:52:05,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:05,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:05,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:05,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:05,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:05,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:05,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 06:52:05,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:05,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:05,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:05,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:05,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:52:05,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:05,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:05,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:05,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:05,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:52:05,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:05,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-29 06:52:05,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:05,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:05,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:05,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:05,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 06:52:05,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:52:06,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:52:06,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:06,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:06,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:06,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:52:06,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:06,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-29 06:52:06,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:06,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:06,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:52:06,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:06,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:52:06,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:06,740 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 58 proven. 83 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 06:52:06,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336552992] [2020-10-29 06:52:06,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:06,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:52:06,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690603726] [2020-10-29 06:52:06,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 06:52:06,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:06,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 06:52:06,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-29 06:52:06,744 INFO L87 Difference]: Start difference. First operand 2814 states and 3721 transitions. Second operand 9 states. [2020-10-29 06:52:08,296 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-29 06:52:10,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:10,352 INFO L93 Difference]: Finished difference Result 6286 states and 8359 transitions. [2020-10-29 06:52:10,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:52:10,353 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 233 [2020-10-29 06:52:10,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:10,374 INFO L225 Difference]: With dead ends: 6286 [2020-10-29 06:52:10,374 INFO L226 Difference]: Without dead ends: 3656 [2020-10-29 06:52:10,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-29 06:52:10,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3656 states. [2020-10-29 06:52:10,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3656 to 3601. [2020-10-29 06:52:10,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3601 states. [2020-10-29 06:52:10,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3601 states to 3601 states and 4680 transitions. [2020-10-29 06:52:10,506 INFO L78 Accepts]: Start accepts. Automaton has 3601 states and 4680 transitions. Word has length 233 [2020-10-29 06:52:10,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:10,506 INFO L481 AbstractCegarLoop]: Abstraction has 3601 states and 4680 transitions. [2020-10-29 06:52:10,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 06:52:10,507 INFO L276 IsEmpty]: Start isEmpty. Operand 3601 states and 4680 transitions. [2020-10-29 06:52:10,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-29 06:52:10,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:10,514 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:52:10,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 06:52:10,515 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:10,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:10,515 INFO L82 PathProgramCache]: Analyzing trace with hash -656755551, now seen corresponding path program 1 times [2020-10-29 06:52:10,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:10,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364224543] [2020-10-29 06:52:10,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:10,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:10,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:10,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:11,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:12,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:12,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-29 06:52:12,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:52:12,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2039 [2020-10-29 06:52:12,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:12,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:12,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:12,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:52:12,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 06:52:12,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:12,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:12,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:12,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:12,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:12,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:12,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:52:12,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:12,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:12,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:12,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:12,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:12,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:12,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:12,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:12,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:12,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:52:12,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:12,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-29 06:52:12,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:12,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:12,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:12,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:12,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:52:12,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:13,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:52:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:13,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:13,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:13,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 06:52:13,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:13,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-29 06:52:13,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:13,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:13,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:13,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:13,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 06:52:13,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:13,242 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:52:13,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364224543] [2020-10-29 06:52:13,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:13,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:52:13,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588193258] [2020-10-29 06:52:13,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:52:13,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:13,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:52:13,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:52:13,246 INFO L87 Difference]: Start difference. First operand 3601 states and 4680 transitions. Second operand 7 states. [2020-10-29 06:52:17,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:17,311 INFO L93 Difference]: Finished difference Result 8495 states and 11984 transitions. [2020-10-29 06:52:17,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:52:17,312 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 244 [2020-10-29 06:52:17,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:17,351 INFO L225 Difference]: With dead ends: 8495 [2020-10-29 06:52:17,351 INFO L226 Difference]: Without dead ends: 5278 [2020-10-29 06:52:17,365 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 [2020-10-29 06:52:17,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5278 states. [2020-10-29 06:52:17,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5278 to 5202. [2020-10-29 06:52:17,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5202 states. [2020-10-29 06:52:17,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5202 states to 5202 states and 6781 transitions. [2020-10-29 06:52:17,558 INFO L78 Accepts]: Start accepts. Automaton has 5202 states and 6781 transitions. Word has length 244 [2020-10-29 06:52:17,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:17,558 INFO L481 AbstractCegarLoop]: Abstraction has 5202 states and 6781 transitions. [2020-10-29 06:52:17,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:52:17,559 INFO L276 IsEmpty]: Start isEmpty. Operand 5202 states and 6781 transitions. [2020-10-29 06:52:17,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-29 06:52:17,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:17,565 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:52:17,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 06:52:17,566 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:17,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:17,566 INFO L82 PathProgramCache]: Analyzing trace with hash 829765145, now seen corresponding path program 1 times [2020-10-29 06:52:17,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:17,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990494276] [2020-10-29 06:52:17,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:17,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:17,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:17,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:19,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:19,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-29 06:52:19,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:52:19,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1839 [2020-10-29 06:52:19,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:19,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:19,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:19,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:52:19,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 06:52:19,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:19,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:19,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:19,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:19,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:19,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:19,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:52:19,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:19,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:19,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:19,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:19,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:19,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:19,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:19,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:19,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:19,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:52:19,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:19,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-29 06:52:19,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:19,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:19,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:19,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:19,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:52:19,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:19,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:52:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:19,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:19,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:19,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:52:19,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:19,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-29 06:52:19,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:19,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:19,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:19,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:19,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:52:19,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:52:20,258 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:52:20,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990494276] [2020-10-29 06:52:20,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:20,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:52:20,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69049469] [2020-10-29 06:52:20,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:52:20,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:20,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:52:20,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:52:20,262 INFO L87 Difference]: Start difference. First operand 5202 states and 6781 transitions. Second operand 7 states. [2020-10-29 06:52:24,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:24,279 INFO L93 Difference]: Finished difference Result 9656 states and 12930 transitions. [2020-10-29 06:52:24,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:52:24,280 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2020-10-29 06:52:24,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:24,310 INFO L225 Difference]: With dead ends: 9656 [2020-10-29 06:52:24,311 INFO L226 Difference]: Without dead ends: 5815 [2020-10-29 06:52:24,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:52:24,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5815 states. [2020-10-29 06:52:24,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5815 to 5795. [2020-10-29 06:52:24,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5795 states. [2020-10-29 06:52:24,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5795 states to 5795 states and 7522 transitions. [2020-10-29 06:52:24,492 INFO L78 Accepts]: Start accepts. Automaton has 5795 states and 7522 transitions. Word has length 248 [2020-10-29 06:52:24,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:24,493 INFO L481 AbstractCegarLoop]: Abstraction has 5795 states and 7522 transitions. [2020-10-29 06:52:24,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:52:24,493 INFO L276 IsEmpty]: Start isEmpty. Operand 5795 states and 7522 transitions. [2020-10-29 06:52:24,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-29 06:52:24,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:24,502 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:52:24,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 06:52:24,502 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:24,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:24,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1307077196, now seen corresponding path program 1 times [2020-10-29 06:52:24,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:24,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119158255] [2020-10-29 06:52:24,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:24,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:24,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:25,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:25,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-29 06:52:25,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:52:25,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1026 [2020-10-29 06:52:25,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:25,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:25,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:25,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 255 [2020-10-29 06:52:25,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 06:52:25,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:52:25,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:25,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:25,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:25,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:25,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:25,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:52:25,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:25,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:25,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:25,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:25,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:25,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:25,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:25,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:25,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:25,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-29 06:52:25,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:25,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-29 06:52:25,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:25,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:25,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:25,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:25,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:25,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:25,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-29 06:52:25,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:26,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:26,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:26,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 06:52:26,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:26,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-29 06:52:26,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:26,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:26,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:26,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:26,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 06:52:26,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:26,170 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-29 06:52:26,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119158255] [2020-10-29 06:52:26,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:26,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:52:26,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391948286] [2020-10-29 06:52:26,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:52:26,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:26,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:52:26,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:52:26,180 INFO L87 Difference]: Start difference. First operand 5795 states and 7522 transitions. Second operand 5 states. [2020-10-29 06:52:29,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:29,256 INFO L93 Difference]: Finished difference Result 14263 states and 19084 transitions. [2020-10-29 06:52:29,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:52:29,258 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 287 [2020-10-29 06:52:29,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:29,320 INFO L225 Difference]: With dead ends: 14263 [2020-10-29 06:52:29,321 INFO L226 Difference]: Without dead ends: 8852 [2020-10-29 06:52:29,337 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 [2020-10-29 06:52:29,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8852 states. [2020-10-29 06:52:29,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8852 to 8469. [2020-10-29 06:52:29,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8469 states. [2020-10-29 06:52:29,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8469 states to 8469 states and 11148 transitions. [2020-10-29 06:52:29,620 INFO L78 Accepts]: Start accepts. Automaton has 8469 states and 11148 transitions. Word has length 287 [2020-10-29 06:52:29,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:29,621 INFO L481 AbstractCegarLoop]: Abstraction has 8469 states and 11148 transitions. [2020-10-29 06:52:29,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:52:29,621 INFO L276 IsEmpty]: Start isEmpty. Operand 8469 states and 11148 transitions. [2020-10-29 06:52:29,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-29 06:52:29,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:29,635 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:52:29,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 06:52:29,636 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:29,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:29,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1075395262, now seen corresponding path program 1 times [2020-10-29 06:52:29,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:29,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784238674] [2020-10-29 06:52:29,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:29,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:29,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:30,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:31,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:34,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:34,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-29 06:52:34,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:52:34,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 06:52:34,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:34,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:34,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:34,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 202 [2020-10-29 06:52:34,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 06:52:34,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:52:34,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:34,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:34,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:34,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:34,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:34,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:34,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:52:34,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:34,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:34,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:34,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:34,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:34,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:34,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:34,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:34,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:34,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:52:34,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:34,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 06:52:34,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:34,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:34,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:34,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:34,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:34,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:34,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:52:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:35,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:35,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:35,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:52:35,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:35,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 06:52:35,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:35,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:35,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:35,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:35,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 06:52:35,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:35,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-29 06:52:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:35,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:35,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:35,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:52:35,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:35,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 06:52:35,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:35,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:35,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:35,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:35,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:52:35,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:35,453 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 253 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-29 06:52:35,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784238674] [2020-10-29 06:52:35,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:35,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:52:35,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088653985] [2020-10-29 06:52:35,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:52:35,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:35,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:52:35,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:52:35,455 INFO L87 Difference]: Start difference. First operand 8469 states and 11148 transitions. Second operand 7 states. [2020-10-29 06:52:38,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:38,898 INFO L93 Difference]: Finished difference Result 16945 states and 22928 transitions. [2020-10-29 06:52:38,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 06:52:38,899 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 307 [2020-10-29 06:52:38,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:38,943 INFO L225 Difference]: With dead ends: 16945 [2020-10-29 06:52:38,944 INFO L226 Difference]: Without dead ends: 10597 [2020-10-29 06:52:38,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 06:52:38,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10597 states. [2020-10-29 06:52:39,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10597 to 10021. [2020-10-29 06:52:39,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10021 states. [2020-10-29 06:52:39,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10021 states to 10021 states and 12876 transitions. [2020-10-29 06:52:39,380 INFO L78 Accepts]: Start accepts. Automaton has 10021 states and 12876 transitions. Word has length 307 [2020-10-29 06:52:39,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:39,381 INFO L481 AbstractCegarLoop]: Abstraction has 10021 states and 12876 transitions. [2020-10-29 06:52:39,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:52:39,381 INFO L276 IsEmpty]: Start isEmpty. Operand 10021 states and 12876 transitions. [2020-10-29 06:52:39,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-29 06:52:39,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:39,393 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:52:39,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 06:52:39,393 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:39,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:39,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1165833485, now seen corresponding path program 1 times [2020-10-29 06:52:39,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:39,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356190770] [2020-10-29 06:52:39,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:39,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:39,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:39,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:40,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:40,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-29 06:52:40,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:52:40,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1175 [2020-10-29 06:52:40,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:40,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:40,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:52:40,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:52:40,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-29 06:52:40,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:40,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:40,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:40,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:40,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:40,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:40,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:52:40,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:40,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:40,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:40,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:40,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:40,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:40,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:40,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:40,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:40,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:52:40,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:40,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 06:52:40,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:40,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:40,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:40,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:40,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:52:40,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:41,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:52:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:41,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:41,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:41,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 06:52:41,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:41,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-29 06:52:41,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:41,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:41,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:41,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:41,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-29 06:52:41,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:41,362 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 160 proven. 36 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 06:52:41,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356190770] [2020-10-29 06:52:41,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:41,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:52:41,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502620037] [2020-10-29 06:52:41,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:52:41,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:41,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:52:41,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:52:41,366 INFO L87 Difference]: Start difference. First operand 10021 states and 12876 transitions. Second operand 6 states. [2020-10-29 06:52:44,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:44,862 INFO L93 Difference]: Finished difference Result 20344 states and 27833 transitions. [2020-10-29 06:52:44,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:52:44,863 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 313 [2020-10-29 06:52:44,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:44,915 INFO L225 Difference]: With dead ends: 20344 [2020-10-29 06:52:44,915 INFO L226 Difference]: Without dead ends: 12449 [2020-10-29 06:52:44,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:52:44,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12449 states. [2020-10-29 06:52:45,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12449 to 12159. [2020-10-29 06:52:45,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12159 states. [2020-10-29 06:52:45,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12159 states to 12159 states and 15845 transitions. [2020-10-29 06:52:45,261 INFO L78 Accepts]: Start accepts. Automaton has 12159 states and 15845 transitions. Word has length 313 [2020-10-29 06:52:45,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:45,262 INFO L481 AbstractCegarLoop]: Abstraction has 12159 states and 15845 transitions. [2020-10-29 06:52:45,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:52:45,262 INFO L276 IsEmpty]: Start isEmpty. Operand 12159 states and 15845 transitions. [2020-10-29 06:52:45,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-29 06:52:45,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:45,274 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:52:45,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 06:52:45,275 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:45,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:45,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1327180462, now seen corresponding path program 1 times [2020-10-29 06:52:45,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:45,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080760984] [2020-10-29 06:52:45,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:45,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:45,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:45,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:45,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:47,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:47,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:50,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:50,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-29 06:52:50,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:52:50,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4695 [2020-10-29 06:52:50,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:50,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:50,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 06:52:50,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:52:50,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 295 [2020-10-29 06:52:50,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:52:50,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:50,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:50,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:50,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:50,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:50,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:50,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 06:52:50,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:50,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:50,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:50,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:50,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:52:50,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:50,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:50,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:50,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:50,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:50,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:50,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:52:50,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:52:50,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-29 06:52:50,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:50,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:50,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:50,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:50,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:52:50,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:50,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:52:50,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:50,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:50,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:50,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:50,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 06:52:50,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:52:50,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-29 06:52:50,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:50,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:50,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:50,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:50,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 06:52:50,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:50,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 06:52:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:50,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:50,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:50,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:52:50,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:50,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 06:52:50,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:50,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:50,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:52:50,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:50,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:52:50,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:51,135 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 239 proven. 7 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-29 06:52:51,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080760984] [2020-10-29 06:52:51,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:51,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:52:51,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775855232] [2020-10-29 06:52:51,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:52:51,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:51,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:52:51,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:52:51,138 INFO L87 Difference]: Start difference. First operand 12159 states and 15845 transitions. Second operand 8 states. [2020-10-29 06:52:53,736 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-29 06:52:54,066 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-10-29 06:52:55,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:55,778 INFO L93 Difference]: Finished difference Result 26971 states and 35606 transitions. [2020-10-29 06:52:55,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:52:55,779 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 317 [2020-10-29 06:52:55,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:55,838 INFO L225 Difference]: With dead ends: 26971 [2020-10-29 06:52:55,838 INFO L226 Difference]: Without dead ends: 15176 [2020-10-29 06:52:55,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-29 06:52:55,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15176 states. [2020-10-29 06:52:56,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15176 to 13084. [2020-10-29 06:52:56,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13084 states. [2020-10-29 06:52:56,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13084 states to 13084 states and 16828 transitions. [2020-10-29 06:52:56,229 INFO L78 Accepts]: Start accepts. Automaton has 13084 states and 16828 transitions. Word has length 317 [2020-10-29 06:52:56,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:56,230 INFO L481 AbstractCegarLoop]: Abstraction has 13084 states and 16828 transitions. [2020-10-29 06:52:56,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:52:56,230 INFO L276 IsEmpty]: Start isEmpty. Operand 13084 states and 16828 transitions. [2020-10-29 06:52:56,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-29 06:52:56,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:56,243 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:52:56,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 06:52:56,244 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:56,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:56,245 INFO L82 PathProgramCache]: Analyzing trace with hash -549125730, now seen corresponding path program 1 times [2020-10-29 06:52:56,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:56,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239230629] [2020-10-29 06:52:56,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:56,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:56,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:56,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:56,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:57,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:58,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:59,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:01,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:01,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 351 [2020-10-29 06:53:01,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 06:53:01,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-29 06:53:01,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:01,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:01,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:53:01,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-29 06:53:01,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 06:53:01,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:01,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:01,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:01,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:01,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:01,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:01,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 06:53:01,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:01,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:01,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:01,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:01,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:01,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:01,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:01,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:01,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:01,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:01,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:53:01,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:01,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 06:53:01,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:01,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:01,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:01,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:01,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:53:01,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:01,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:53:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:01,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:01,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:01,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:53:01,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:01,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 06:53:01,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:01,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:01,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:01,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:01,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 06:53:01,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:01,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-29 06:53:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:01,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:01,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:01,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 06:53:01,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:01,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 06:53:01,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:01,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:01,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:01,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:01,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 06:53:01,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:02,068 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 277 proven. 6 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-29 06:53:02,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239230629] [2020-10-29 06:53:02,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:53:02,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:53:02,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13448300] [2020-10-29 06:53:02,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:53:02,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:02,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:53:02,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:53:02,070 INFO L87 Difference]: Start difference. First operand 13084 states and 16828 transitions. Second operand 7 states. [2020-10-29 06:53:05,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:05,689 INFO L93 Difference]: Finished difference Result 27747 states and 36067 transitions. [2020-10-29 06:53:05,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:53:05,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 335 [2020-10-29 06:53:05,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:05,745 INFO L225 Difference]: With dead ends: 27747 [2020-10-29 06:53:05,745 INFO L226 Difference]: Without dead ends: 15047 [2020-10-29 06:53:05,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:53:05,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15047 states. [2020-10-29 06:53:06,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15047 to 15021. [2020-10-29 06:53:06,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15021 states. [2020-10-29 06:53:06,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15021 states to 15021 states and 19400 transitions. [2020-10-29 06:53:06,139 INFO L78 Accepts]: Start accepts. Automaton has 15021 states and 19400 transitions. Word has length 335 [2020-10-29 06:53:06,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:06,140 INFO L481 AbstractCegarLoop]: Abstraction has 15021 states and 19400 transitions. [2020-10-29 06:53:06,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:53:06,140 INFO L276 IsEmpty]: Start isEmpty. Operand 15021 states and 19400 transitions. [2020-10-29 06:53:06,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-29 06:53:06,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:06,155 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:53:06,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 06:53:06,156 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:06,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:06,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1105947419, now seen corresponding path program 1 times [2020-10-29 06:53:06,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:06,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657418880] [2020-10-29 06:53:06,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:06,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:06,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:07,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:07,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-29 06:53:07,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:53:07,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1620 [2020-10-29 06:53:07,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:07,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:07,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 06:53:07,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:53:07,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 319 [2020-10-29 06:53:07,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:08,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:08,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:08,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:08,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:08,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:08,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 06:53:08,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:08,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:08,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:08,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:08,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:53:08,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:53:08,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:08,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:08,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:08,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 06:53:08,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:08,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-29 06:53:08,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:08,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:08,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:08,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:08,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-29 06:53:08,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:08,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-29 06:53:08,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:08,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:08,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:08,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 06:53:08,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:08,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-29 06:53:08,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:08,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:08,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:53:08,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:08,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-29 06:53:08,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:08,824 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 188 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 06:53:08,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657418880] [2020-10-29 06:53:08,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:53:08,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:53:08,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768617577] [2020-10-29 06:53:08,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 06:53:08,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:08,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 06:53:08,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-29 06:53:08,827 INFO L87 Difference]: Start difference. First operand 15021 states and 19400 transitions. Second operand 9 states. [2020-10-29 06:53:10,942 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-29 06:53:13,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:13,139 INFO L93 Difference]: Finished difference Result 31371 states and 41315 transitions. [2020-10-29 06:53:13,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 06:53:13,140 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 335 [2020-10-29 06:53:13,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:13,217 INFO L225 Difference]: With dead ends: 31371 [2020-10-29 06:53:13,217 INFO L226 Difference]: Without dead ends: 18642 [2020-10-29 06:53:13,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-29 06:53:13,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18642 states. [2020-10-29 06:53:13,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18642 to 17733. [2020-10-29 06:53:13,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17733 states. [2020-10-29 06:53:13,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17733 states to 17733 states and 22691 transitions. [2020-10-29 06:53:13,717 INFO L78 Accepts]: Start accepts. Automaton has 17733 states and 22691 transitions. Word has length 335 [2020-10-29 06:53:13,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:13,718 INFO L481 AbstractCegarLoop]: Abstraction has 17733 states and 22691 transitions. [2020-10-29 06:53:13,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 06:53:13,718 INFO L276 IsEmpty]: Start isEmpty. Operand 17733 states and 22691 transitions. [2020-10-29 06:53:13,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-29 06:53:13,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:13,732 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:53:13,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 06:53:13,732 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:13,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:13,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1080396966, now seen corresponding path program 1 times [2020-10-29 06:53:13,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:13,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990382494] [2020-10-29 06:53:13,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:13,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:13,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:14,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:15,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:15,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:15,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 355 [2020-10-29 06:53:15,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:53:15,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1975 [2020-10-29 06:53:15,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:15,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:15,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:15,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-29 06:53:15,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 06:53:15,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:15,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:15,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:15,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:15,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:15,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:15,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:53:15,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:15,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:15,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:15,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:15,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:15,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:15,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:15,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:15,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:15,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:53:15,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:15,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 06:53:15,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:15,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:15,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:15,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:15,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:15,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:16,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:53:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:16,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:16,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:16,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 06:53:16,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:16,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 06:53:16,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:16,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:16,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:16,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:16,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 06:53:16,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:16,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 06:53:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:16,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:16,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:16,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 06:53:16,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:16,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 06:53:16,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:16,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:16,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:16,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:16,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 06:53:16,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:16,442 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 286 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-29 06:53:16,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990382494] [2020-10-29 06:53:16,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:53:16,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:53:16,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483355029] [2020-10-29 06:53:16,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:53:16,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:16,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:53:16,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:53:16,445 INFO L87 Difference]: Start difference. First operand 17733 states and 22691 transitions. Second operand 7 states. [2020-10-29 06:53:21,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:21,177 INFO L93 Difference]: Finished difference Result 38816 states and 50769 transitions. [2020-10-29 06:53:21,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:53:21,179 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 339 [2020-10-29 06:53:21,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:21,248 INFO L225 Difference]: With dead ends: 38816 [2020-10-29 06:53:21,248 INFO L226 Difference]: Without dead ends: 21473 [2020-10-29 06:53:21,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:53:21,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21473 states. [2020-10-29 06:53:21,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21473 to 20787. [2020-10-29 06:53:21,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20787 states. [2020-10-29 06:53:21,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20787 states to 20787 states and 26069 transitions. [2020-10-29 06:53:21,957 INFO L78 Accepts]: Start accepts. Automaton has 20787 states and 26069 transitions. Word has length 339 [2020-10-29 06:53:21,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:21,958 INFO L481 AbstractCegarLoop]: Abstraction has 20787 states and 26069 transitions. [2020-10-29 06:53:21,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:53:21,958 INFO L276 IsEmpty]: Start isEmpty. Operand 20787 states and 26069 transitions. [2020-10-29 06:53:21,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-10-29 06:53:21,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:21,971 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:53:21,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 06:53:21,972 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:21,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:21,973 INFO L82 PathProgramCache]: Analyzing trace with hash -2144530006, now seen corresponding path program 1 times [2020-10-29 06:53:21,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:21,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726038898] [2020-10-29 06:53:21,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:22,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:22,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:22,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:23,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:23,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 369 [2020-10-29 06:53:23,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:53:23,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1841 [2020-10-29 06:53:23,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:23,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:23,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:23,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-29 06:53:23,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 06:53:23,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:24,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:24,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:24,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:24,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:24,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:24,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:53:24,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:24,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:24,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:24,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:24,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:24,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:24,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:24,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:24,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:24,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:53:24,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:24,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 06:53:24,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:24,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:24,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:24,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:24,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:24,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:24,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:53:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:24,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:24,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:24,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 06:53:24,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:24,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 06:53:24,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:24,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:24,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:24,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:24,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 06:53:24,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:24,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 06:53:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:24,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:24,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:24,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 06:53:24,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:24,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-29 06:53:24,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:24,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:24,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:24,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:24,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 06:53:24,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:24,471 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 300 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-29 06:53:24,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726038898] [2020-10-29 06:53:24,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:53:24,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:53:24,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322570368] [2020-10-29 06:53:24,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:53:24,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:24,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:53:24,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:53:24,473 INFO L87 Difference]: Start difference. First operand 20787 states and 26069 transitions. Second operand 7 states. [2020-10-29 06:53:29,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:29,198 INFO L93 Difference]: Finished difference Result 39490 states and 49772 transitions. [2020-10-29 06:53:29,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:53:29,199 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 353 [2020-10-29 06:53:29,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:29,398 INFO L225 Difference]: With dead ends: 39490 [2020-10-29 06:53:29,399 INFO L226 Difference]: Without dead ends: 20827 [2020-10-29 06:53:29,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:53:29,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20827 states. [2020-10-29 06:53:29,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20827 to 20791. [2020-10-29 06:53:29,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20791 states. [2020-10-29 06:53:29,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20791 states to 20791 states and 26036 transitions. [2020-10-29 06:53:29,889 INFO L78 Accepts]: Start accepts. Automaton has 20791 states and 26036 transitions. Word has length 353 [2020-10-29 06:53:29,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:29,889 INFO L481 AbstractCegarLoop]: Abstraction has 20791 states and 26036 transitions. [2020-10-29 06:53:29,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:53:29,889 INFO L276 IsEmpty]: Start isEmpty. Operand 20791 states and 26036 transitions. [2020-10-29 06:53:29,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-10-29 06:53:29,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:29,901 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:53:29,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 06:53:29,901 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:29,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:29,902 INFO L82 PathProgramCache]: Analyzing trace with hash -623194006, now seen corresponding path program 1 times [2020-10-29 06:53:29,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:29,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507796878] [2020-10-29 06:53:29,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:30,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:30,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:30,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:30,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:31,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:34,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:34,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 376 [2020-10-29 06:53:34,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:53:34,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 06:53:34,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:34,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:34,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:34,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 233 [2020-10-29 06:53:34,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 06:53:34,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:35,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:35,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:35,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:35,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:35,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:35,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:53:35,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:35,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:35,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:35,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:35,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:35,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:35,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:35,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:35,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:35,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:35,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 06:53:35,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:35,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 06:53:35,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:35,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:35,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:35,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:35,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:35,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:35,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-29 06:53:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:35,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:35,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:35,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:53:35,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:35,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 06:53:35,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:35,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:35,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:35,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:35,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 06:53:35,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:35,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-29 06:53:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:35,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:35,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:35,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 06:53:35,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:35,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-29 06:53:35,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:35,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:35,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:35,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:35,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 06:53:35,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:35,523 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 276 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-29 06:53:35,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507796878] [2020-10-29 06:53:35,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:53:35,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:53:35,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135137864] [2020-10-29 06:53:35,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:53:35,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:35,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:53:35,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:53:35,525 INFO L87 Difference]: Start difference. First operand 20791 states and 26036 transitions. Second operand 7 states. [2020-10-29 06:53:39,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:39,968 INFO L93 Difference]: Finished difference Result 40874 states and 51534 transitions. [2020-10-29 06:53:39,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:53:39,969 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 360 [2020-10-29 06:53:39,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:40,042 INFO L225 Difference]: With dead ends: 40874 [2020-10-29 06:53:40,042 INFO L226 Difference]: Without dead ends: 21047 [2020-10-29 06:53:40,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:53:40,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21047 states. [2020-10-29 06:53:40,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21047 to 19443. [2020-10-29 06:53:40,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19443 states. [2020-10-29 06:53:40,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19443 states to 19443 states and 23925 transitions. [2020-10-29 06:53:40,549 INFO L78 Accepts]: Start accepts. Automaton has 19443 states and 23925 transitions. Word has length 360 [2020-10-29 06:53:40,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:40,549 INFO L481 AbstractCegarLoop]: Abstraction has 19443 states and 23925 transitions. [2020-10-29 06:53:40,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:53:40,550 INFO L276 IsEmpty]: Start isEmpty. Operand 19443 states and 23925 transitions. [2020-10-29 06:53:40,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-10-29 06:53:40,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:40,561 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:53:40,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 06:53:40,562 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:40,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:40,563 INFO L82 PathProgramCache]: Analyzing trace with hash 292617374, now seen corresponding path program 1 times [2020-10-29 06:53:40,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:40,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664988072] [2020-10-29 06:53:40,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:40,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:40,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:40,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:42,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:42,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-29 06:53:42,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:53:42,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2031 [2020-10-29 06:53:42,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:42,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:42,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:42,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-29 06:53:42,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 06:53:42,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:42,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:42,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:42,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:42,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:42,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:42,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:53:42,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:42,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:42,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:42,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:42,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:42,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:42,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:42,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:42,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:42,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:53:42,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:42,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 06:53:42,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:42,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:42,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:42,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:42,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:42,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:42,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:53:42,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:42,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:42,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:42,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 06:53:42,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:42,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 06:53:42,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:42,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:42,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:42,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:42,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 06:53:42,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:43,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-29 06:53:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:43,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:43,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:43,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 06:53:43,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:43,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-29 06:53:43,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:43,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:43,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:43,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:43,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 06:53:43,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:43,226 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 297 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-29 06:53:43,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664988072] [2020-10-29 06:53:43,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:53:43,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:53:43,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138238628] [2020-10-29 06:53:43,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:53:43,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:43,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:53:43,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:53:43,228 INFO L87 Difference]: Start difference. First operand 19443 states and 23925 transitions. Second operand 7 states. [2020-10-29 06:53:47,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:47,325 INFO L93 Difference]: Finished difference Result 38540 states and 47653 transitions. [2020-10-29 06:53:47,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:53:47,327 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 366 [2020-10-29 06:53:47,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:47,376 INFO L225 Difference]: With dead ends: 38540 [2020-10-29 06:53:47,376 INFO L226 Difference]: Without dead ends: 20268 [2020-10-29 06:53:47,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:53:47,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20268 states. [2020-10-29 06:53:47,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20268 to 19242. [2020-10-29 06:53:47,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19242 states. [2020-10-29 06:53:47,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19242 states to 19242 states and 23535 transitions. [2020-10-29 06:53:47,843 INFO L78 Accepts]: Start accepts. Automaton has 19242 states and 23535 transitions. Word has length 366 [2020-10-29 06:53:47,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:47,844 INFO L481 AbstractCegarLoop]: Abstraction has 19242 states and 23535 transitions. [2020-10-29 06:53:47,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:53:47,844 INFO L276 IsEmpty]: Start isEmpty. Operand 19242 states and 23535 transitions. [2020-10-29 06:53:47,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-10-29 06:53:47,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:47,856 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 06:53:47,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 06:53:47,856 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:47,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:47,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1368993698, now seen corresponding path program 1 times [2020-10-29 06:53:47,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:47,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794161132] [2020-10-29 06:53:47,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:48,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:48,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:48,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:49,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:49,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 396 [2020-10-29 06:53:49,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:53:49,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1790 [2020-10-29 06:53:49,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:49,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:49,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:49,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-29 06:53:49,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 06:53:49,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:49,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:49,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:49,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:49,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:49,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:49,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:53:49,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:49,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:49,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:49,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:49,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:49,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:49,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:49,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:49,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:49,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:53:49,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:49,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 06:53:49,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:49,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:49,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:49,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:49,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:49,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:50,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:53:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:50,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:50,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:50,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 06:53:50,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:50,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 06:53:50,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:50,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:50,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:50,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:50,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 06:53:50,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:50,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-29 06:53:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:50,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:50,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:50,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 06:53:50,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:50,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-29 06:53:50,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:50,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:50,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:50,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:50,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 06:53:50,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:50,663 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 317 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-29 06:53:50,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794161132] [2020-10-29 06:53:50,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:53:50,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:53:50,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829924879] [2020-10-29 06:53:50,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:53:50,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:50,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:53:50,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:53:50,665 INFO L87 Difference]: Start difference. First operand 19242 states and 23535 transitions. Second operand 7 states. [2020-10-29 06:53:54,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:54,138 INFO L93 Difference]: Finished difference Result 36394 states and 44715 transitions. [2020-10-29 06:53:54,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 06:53:54,139 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 380 [2020-10-29 06:53:54,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:54,180 INFO L225 Difference]: With dead ends: 36394 [2020-10-29 06:53:54,180 INFO L226 Difference]: Without dead ends: 19276 [2020-10-29 06:53:54,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:53:54,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19276 states. [2020-10-29 06:53:54,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19276 to 19240. [2020-10-29 06:53:54,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19240 states. [2020-10-29 06:53:54,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19240 states to 19240 states and 23488 transitions. [2020-10-29 06:53:54,605 INFO L78 Accepts]: Start accepts. Automaton has 19240 states and 23488 transitions. Word has length 380 [2020-10-29 06:53:54,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:54,606 INFO L481 AbstractCegarLoop]: Abstraction has 19240 states and 23488 transitions. [2020-10-29 06:53:54,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:53:54,606 INFO L276 IsEmpty]: Start isEmpty. Operand 19240 states and 23488 transitions. [2020-10-29 06:53:54,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2020-10-29 06:53:54,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:54,618 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:53:54,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 06:53:54,618 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:54,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:54,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1223637480, now seen corresponding path program 1 times [2020-10-29 06:53:54,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:54,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090858364] [2020-10-29 06:53:54,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:54,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:54,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:55,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:56,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:56,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 412 [2020-10-29 06:53:56,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:53:56,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1388 [2020-10-29 06:53:56,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:56,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:56,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:56,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 255 [2020-10-29 06:53:56,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 06:53:56,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:56,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:56,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:56,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:56,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:56,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:56,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:53:56,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:56,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:56,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:56,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:56,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:56,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:56,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:56,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:56,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:56,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:56,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-29 06:53:56,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:56,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 06:53:56,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:56,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:56,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:56,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:56,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:56,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:56,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-29 06:53:56,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:56,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:56,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:56,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 06:53:56,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:56,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 06:53:56,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:56,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:56,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:56,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:56,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 06:53:56,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:56,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-29 06:53:56,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:56,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:56,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:56,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 06:53:56,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:56,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-29 06:53:56,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:56,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:56,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:56,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:56,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 06:53:56,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:56,873 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 288 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-29 06:53:56,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090858364] [2020-10-29 06:53:56,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:53:56,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:53:56,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569657024] [2020-10-29 06:53:56,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:53:56,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:56,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:53:56,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:53:56,876 INFO L87 Difference]: Start difference. First operand 19240 states and 23488 transitions. Second operand 7 states. [2020-10-29 06:54:01,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:54:01,804 INFO L93 Difference]: Finished difference Result 37933 states and 46361 transitions. [2020-10-29 06:54:01,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:54:01,805 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 396 [2020-10-29 06:54:01,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:54:01,843 INFO L225 Difference]: With dead ends: 37933 [2020-10-29 06:54:01,843 INFO L226 Difference]: Without dead ends: 20817 [2020-10-29 06:54:01,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:54:01,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20817 states. [2020-10-29 06:54:02,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20817 to 20198. [2020-10-29 06:54:02,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20198 states. [2020-10-29 06:54:02,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20198 states to 20198 states and 24553 transitions. [2020-10-29 06:54:02,429 INFO L78 Accepts]: Start accepts. Automaton has 20198 states and 24553 transitions. Word has length 396 [2020-10-29 06:54:02,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:54:02,430 INFO L481 AbstractCegarLoop]: Abstraction has 20198 states and 24553 transitions. [2020-10-29 06:54:02,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:54:02,430 INFO L276 IsEmpty]: Start isEmpty. Operand 20198 states and 24553 transitions. [2020-10-29 06:54:02,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2020-10-29 06:54:02,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:54:02,442 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:54:02,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 06:54:02,442 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:54:02,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:54:02,443 INFO L82 PathProgramCache]: Analyzing trace with hash -727671031, now seen corresponding path program 1 times [2020-10-29 06:54:02,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:54:02,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847336692] [2020-10-29 06:54:02,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:54:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:02,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:02,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:02,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:03,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:07,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:07,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 414 [2020-10-29 06:54:07,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:54:07,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 06:54:07,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:07,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:07,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:54:07,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-29 06:54:07,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-29 06:54:07,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:07,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:54:07,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:07,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:07,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:07,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:54:07,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:07,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:54:07,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:07,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:07,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:07,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:07,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:07,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:07,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:54:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:07,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:07,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:07,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:54:07,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:07,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 06:54:07,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:07,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:07,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:54:07,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:07,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:54:07,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:07,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:54:07,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:07,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:07,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:07,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 06:54:07,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:07,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-29 06:54:07,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:07,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:07,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:54:07,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:54:07,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 06:54:07,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:08,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-10-29 06:54:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:08,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:08,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:08,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 06:54:08,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:08,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 06:54:08,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:08,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:08,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:08,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-29 06:54:08,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:08,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:08,297 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 225 proven. 94 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-29 06:54:08,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847336692] [2020-10-29 06:54:08,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:54:08,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:54:08,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415805942] [2020-10-29 06:54:08,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:54:08,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:54:08,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:54:08,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:54:08,299 INFO L87 Difference]: Start difference. First operand 20198 states and 24553 transitions. Second operand 7 states. [2020-10-29 06:54:10,414 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-29 06:54:11,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:54:11,888 INFO L93 Difference]: Finished difference Result 41225 states and 50117 transitions. [2020-10-29 06:54:11,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 06:54:11,889 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 398 [2020-10-29 06:54:11,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:54:11,926 INFO L225 Difference]: With dead ends: 41225 [2020-10-29 06:54:11,926 INFO L226 Difference]: Without dead ends: 21411 [2020-10-29 06:54:11,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-29 06:54:11,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21411 states. [2020-10-29 06:54:12,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21411 to 21358. [2020-10-29 06:54:12,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21358 states. [2020-10-29 06:54:12,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21358 states to 21358 states and 25741 transitions. [2020-10-29 06:54:12,350 INFO L78 Accepts]: Start accepts. Automaton has 21358 states and 25741 transitions. Word has length 398 [2020-10-29 06:54:12,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:54:12,350 INFO L481 AbstractCegarLoop]: Abstraction has 21358 states and 25741 transitions. [2020-10-29 06:54:12,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:54:12,351 INFO L276 IsEmpty]: Start isEmpty. Operand 21358 states and 25741 transitions. [2020-10-29 06:54:12,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2020-10-29 06:54:12,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:54:12,365 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:54:12,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 06:54:12,366 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:54:12,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:54:12,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1679139957, now seen corresponding path program 1 times [2020-10-29 06:54:12,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:54:12,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358667588] [2020-10-29 06:54:12,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:54:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:12,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:12,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:12,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:13,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:17,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:17,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 424 [2020-10-29 06:54:17,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:54:17,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 06:54:17,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:17,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:17,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:54:17,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-29 06:54:17,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-29 06:54:17,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:17,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:54:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:17,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:17,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:17,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:54:17,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:17,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:54:17,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:17,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:17,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:17,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:17,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:17,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:17,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:54:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:17,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:17,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:17,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:54:17,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:17,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-29 06:54:17,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:17,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:17,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:54:17,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:17,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-29 06:54:17,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:17,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:54:17,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:17,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:18,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:18,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 06:54:18,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:18,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-29 06:54:18,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:18,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:18,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:54:18,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:54:18,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 06:54:18,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:18,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-29 06:54:18,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:18,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:18,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:18,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 06:54:18,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:18,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 06:54:18,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:18,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:18,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:18,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-29 06:54:18,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:18,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:18,408 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 235 proven. 94 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-29 06:54:18,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358667588] [2020-10-29 06:54:18,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:54:18,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:54:18,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874666830] [2020-10-29 06:54:18,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:54:18,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:54:18,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:54:18,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:54:18,410 INFO L87 Difference]: Start difference. First operand 21358 states and 25741 transitions. Second operand 7 states. [2020-10-29 06:54:22,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:54:22,308 INFO L93 Difference]: Finished difference Result 45824 states and 55049 transitions. [2020-10-29 06:54:22,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 06:54:22,311 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 408 [2020-10-29 06:54:22,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:54:22,357 INFO L225 Difference]: With dead ends: 45824 [2020-10-29 06:54:22,357 INFO L226 Difference]: Without dead ends: 24850 [2020-10-29 06:54:22,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-29 06:54:22,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24850 states. [2020-10-29 06:54:22,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24850 to 24606. [2020-10-29 06:54:22,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24606 states. [2020-10-29 06:54:22,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24606 states to 24606 states and 29236 transitions. [2020-10-29 06:54:22,709 INFO L78 Accepts]: Start accepts. Automaton has 24606 states and 29236 transitions. Word has length 408 [2020-10-29 06:54:22,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:54:22,710 INFO L481 AbstractCegarLoop]: Abstraction has 24606 states and 29236 transitions. [2020-10-29 06:54:22,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:54:22,710 INFO L276 IsEmpty]: Start isEmpty. Operand 24606 states and 29236 transitions. [2020-10-29 06:54:22,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2020-10-29 06:54:22,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:54:22,722 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:54:22,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 06:54:22,723 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:54:22,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:54:22,723 INFO L82 PathProgramCache]: Analyzing trace with hash -306840377, now seen corresponding path program 1 times [2020-10-29 06:54:22,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:54:22,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503413884] [2020-10-29 06:54:22,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:54:22,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:22,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:22,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:24,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:24,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 438 [2020-10-29 06:54:24,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:54:24,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1412 [2020-10-29 06:54:24,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:24,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:24,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:54:24,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-29 06:54:24,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 06:54:24,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:24,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:54:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:24,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:24,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:24,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:54:24,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:24,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:54:24,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:24,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:24,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:24,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:24,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:24,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:24,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:54:24,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:24,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:24,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:24,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:54:24,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:24,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 06:54:24,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:24,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:24,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:24,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:24,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:24,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:24,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:54:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:24,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:24,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:24,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 06:54:24,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:24,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-29 06:54:24,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:24,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:24,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:54:24,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:24,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-29 06:54:24,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:24,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-29 06:54:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:24,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:24,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:24,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 06:54:24,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:24,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-29 06:54:24,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:24,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:24,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:54:24,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:54:24,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 06:54:24,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:25,390 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 325 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-29 06:54:25,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503413884] [2020-10-29 06:54:25,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:54:25,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:54:25,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116519862] [2020-10-29 06:54:25,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:54:25,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:54:25,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:54:25,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:54:25,397 INFO L87 Difference]: Start difference. First operand 24606 states and 29236 transitions. Second operand 7 states. [2020-10-29 06:54:30,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:54:30,275 INFO L93 Difference]: Finished difference Result 46760 states and 55787 transitions. [2020-10-29 06:54:30,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:54:30,276 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 422 [2020-10-29 06:54:30,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:54:30,346 INFO L225 Difference]: With dead ends: 46760 [2020-10-29 06:54:30,346 INFO L226 Difference]: Without dead ends: 25044 [2020-10-29 06:54:30,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:54:30,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25044 states. [2020-10-29 06:54:30,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25044 to 24984. [2020-10-29 06:54:30,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24984 states. [2020-10-29 06:54:30,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24984 states to 24984 states and 29662 transitions. [2020-10-29 06:54:30,964 INFO L78 Accepts]: Start accepts. Automaton has 24984 states and 29662 transitions. Word has length 422 [2020-10-29 06:54:30,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:54:30,965 INFO L481 AbstractCegarLoop]: Abstraction has 24984 states and 29662 transitions. [2020-10-29 06:54:30,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:54:30,965 INFO L276 IsEmpty]: Start isEmpty. Operand 24984 states and 29662 transitions. [2020-10-29 06:54:30,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2020-10-29 06:54:30,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:54:30,976 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:54:30,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 06:54:30,976 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:54:30,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:54:30,977 INFO L82 PathProgramCache]: Analyzing trace with hash -583123279, now seen corresponding path program 1 times [2020-10-29 06:54:30,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:54:30,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966523130] [2020-10-29 06:54:30,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:54:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:31,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:31,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:31,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:31,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:36,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:36,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 445 [2020-10-29 06:54:36,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:54:36,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 06:54:36,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:36,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:36,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:54:36,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-29 06:54:36,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-29 06:54:36,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:36,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:54:36,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:36,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:36,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:36,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:54:36,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:36,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:54:36,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:36,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:36,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:36,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:36,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:36,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:36,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:54:36,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:36,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:36,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:36,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 06:54:36,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:36,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-29 06:54:36,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:36,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:36,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:54:36,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:36,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-29 06:54:36,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:36,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-29 06:54:36,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:36,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:36,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:36,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 06:54:36,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:36,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-29 06:54:36,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:36,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:36,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:54:36,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:54:36,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 06:54:36,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:36,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-29 06:54:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:36,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:36,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:36,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 06:54:36,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:36,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 06:54:36,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:36,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:36,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:36,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-29 06:54:36,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:36,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:36,816 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 252 proven. 94 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-29 06:54:36,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966523130] [2020-10-29 06:54:36,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:54:36,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:54:36,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756042547] [2020-10-29 06:54:36,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:54:36,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:54:36,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:54:36,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:54:36,818 INFO L87 Difference]: Start difference. First operand 24984 states and 29662 transitions. Second operand 7 states. [2020-10-29 06:54:42,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:54:42,217 INFO L93 Difference]: Finished difference Result 50221 states and 59667 transitions. [2020-10-29 06:54:42,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:54:42,218 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 429 [2020-10-29 06:54:42,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:54:42,269 INFO L225 Difference]: With dead ends: 50221 [2020-10-29 06:54:42,269 INFO L226 Difference]: Without dead ends: 25429 [2020-10-29 06:54:42,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:54:42,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25429 states. [2020-10-29 06:54:42,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25429 to 25362. [2020-10-29 06:54:42,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25362 states. [2020-10-29 06:54:42,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25362 states to 25362 states and 29994 transitions. [2020-10-29 06:54:42,645 INFO L78 Accepts]: Start accepts. Automaton has 25362 states and 29994 transitions. Word has length 429 [2020-10-29 06:54:42,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:54:42,645 INFO L481 AbstractCegarLoop]: Abstraction has 25362 states and 29994 transitions. [2020-10-29 06:54:42,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:54:42,645 INFO L276 IsEmpty]: Start isEmpty. Operand 25362 states and 29994 transitions. [2020-10-29 06:54:42,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2020-10-29 06:54:42,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:54:42,656 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:54:42,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 06:54:42,656 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:54:42,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:54:42,657 INFO L82 PathProgramCache]: Analyzing trace with hash 984365727, now seen corresponding path program 1 times [2020-10-29 06:54:42,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:54:42,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289080288] [2020-10-29 06:54:42,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:54:42,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:42,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:42,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:42,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:43,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:43,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:43,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:44,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:44,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 475 [2020-10-29 06:54:44,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 06:54:44,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1373 [2020-10-29 06:54:44,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:44,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:44,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:54:44,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:54:44,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 313 [2020-10-29 06:54:44,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:44,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:54:44,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:44,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:44,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:44,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:54:44,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:44,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:54:44,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:44,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:44,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:54:44,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:44,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:54:44,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:44,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:54:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:44,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:44,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:44,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:44,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:54:44,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:54:44,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 06:54:44,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:44,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:44,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:54:44,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:44,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 06:54:44,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:44,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:54:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:44,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:44,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:44,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:44,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-29 06:54:44,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:54:44,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-29 06:54:44,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:44,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:44,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:54:44,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-10-29 06:54:44,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 06:54:44,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:44,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-29 06:54:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:44,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:44,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:44,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 06:54:44,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:44,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 06:54:44,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:44,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:44,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:44,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-29 06:54:44,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:44,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:45,071 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2020-10-29 06:54:45,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289080288] [2020-10-29 06:54:45,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:54:45,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:54:45,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291271167] [2020-10-29 06:54:45,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:54:45,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:54:45,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:54:45,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:54:45,073 INFO L87 Difference]: Start difference. First operand 25362 states and 29994 transitions. Second operand 6 states. [2020-10-29 06:54:47,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:54:47,474 INFO L93 Difference]: Finished difference Result 47480 states and 56357 transitions. [2020-10-29 06:54:47,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:54:47,475 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 459 [2020-10-29 06:54:47,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:54:47,524 INFO L225 Difference]: With dead ends: 47480 [2020-10-29 06:54:47,524 INFO L226 Difference]: Without dead ends: 25198 [2020-10-29 06:54:47,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:54:47,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25198 states. [2020-10-29 06:54:47,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25198 to 24943. [2020-10-29 06:54:47,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24943 states. [2020-10-29 06:54:47,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24943 states to 24943 states and 29484 transitions. [2020-10-29 06:54:47,942 INFO L78 Accepts]: Start accepts. Automaton has 24943 states and 29484 transitions. Word has length 459 [2020-10-29 06:54:47,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:54:47,942 INFO L481 AbstractCegarLoop]: Abstraction has 24943 states and 29484 transitions. [2020-10-29 06:54:47,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:54:47,942 INFO L276 IsEmpty]: Start isEmpty. Operand 24943 states and 29484 transitions. [2020-10-29 06:54:47,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2020-10-29 06:54:47,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:54:47,952 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:54:47,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 06:54:47,952 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:54:47,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:54:47,952 INFO L82 PathProgramCache]: Analyzing trace with hash 138836130, now seen corresponding path program 1 times [2020-10-29 06:54:47,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:54:47,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809396351] [2020-10-29 06:54:47,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:54:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:48,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:48,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:48,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:49,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:53,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:53,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 482 [2020-10-29 06:54:53,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:54:53,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 06:54:53,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:53,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:53,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 06:54:53,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-29 06:54:53,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-29 06:54:53,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:53,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:54:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:53,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:53,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:53,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:54:53,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:53,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:54:53,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:53,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:53,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:53,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:53,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:53,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:54:53,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:54:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:53,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:53,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:53,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 06:54:53,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:53,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-29 06:54:53,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:53,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:53,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:54:53,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:53,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-29 06:54:53,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:53,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-29 06:54:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:53,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:54,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:54,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-29 06:54:54,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:54,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-10-29 06:54:54,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:54,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:54,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:54:54,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:54:54,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-29 06:54:54,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:54,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-29 06:54:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:54,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:54,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:55,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:55,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 06:54:55,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:54:55,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 572 [2020-10-29 06:54:55,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:55,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:55,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:54:55,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:54:55,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 06:54:55,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:55,401 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 358 proven. 112 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 06:54:55,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809396351] [2020-10-29 06:54:55,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:54:55,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 06:54:55,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181785315] [2020-10-29 06:54:55,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 06:54:55,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:54:55,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 06:54:55,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-29 06:54:55,404 INFO L87 Difference]: Start difference. First operand 24943 states and 29484 transitions. Second operand 10 states. [2020-10-29 06:54:55,669 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2020-10-29 06:54:59,162 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-29 06:55:01,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:55:01,173 INFO L93 Difference]: Finished difference Result 51061 states and 60450 transitions. [2020-10-29 06:55:01,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 06:55:01,175 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 466 [2020-10-29 06:55:01,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:55:01,241 INFO L225 Difference]: With dead ends: 51061 [2020-10-29 06:55:01,241 INFO L226 Difference]: Without dead ends: 29179 [2020-10-29 06:55:01,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2020-10-29 06:55:01,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29179 states. [2020-10-29 06:55:01,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29179 to 27037. [2020-10-29 06:55:01,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27037 states. [2020-10-29 06:55:01,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27037 states to 27037 states and 31798 transitions. [2020-10-29 06:55:01,685 INFO L78 Accepts]: Start accepts. Automaton has 27037 states and 31798 transitions. Word has length 466 [2020-10-29 06:55:01,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:55:01,686 INFO L481 AbstractCegarLoop]: Abstraction has 27037 states and 31798 transitions. [2020-10-29 06:55:01,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 06:55:01,686 INFO L276 IsEmpty]: Start isEmpty. Operand 27037 states and 31798 transitions. [2020-10-29 06:55:01,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2020-10-29 06:55:01,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:55:01,697 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:55:01,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 06:55:01,698 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:55:01,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:55:01,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1492081706, now seen corresponding path program 1 times [2020-10-29 06:55:01,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:55:01,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409549710] [2020-10-29 06:55:01,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:55:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:01,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:02,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:03,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:03,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 503 [2020-10-29 06:55:03,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:55:03,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1346 [2020-10-29 06:55:03,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:03,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:03,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:55:03,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 346 [2020-10-29 06:55:03,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 06:55:03,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:03,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:55:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:03,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:03,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:03,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:55:03,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:03,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:55:03,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:03,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:03,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:55:03,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:03,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:55:03,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:03,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:55:03,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:03,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:03,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:03,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:55:03,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:03,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 06:55:03,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:03,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:03,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:55:03,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:03,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:55:03,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:03,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:55:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:03,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:03,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:03,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:55:03,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:03,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 06:55:03,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:03,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:03,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:55:03,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:03,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:55:03,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:03,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 06:55:03,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:03,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:03,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:03,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 06:55:03,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:03,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 06:55:03,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:03,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:03,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:55:03,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:03,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 06:55:03,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:03,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-10-29 06:55:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:03,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:03,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:03,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 06:55:03,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:03,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-29 06:55:03,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:03,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:03,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:55:03,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:55:03,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 06:55:03,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:03,935 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 448 proven. 2 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2020-10-29 06:55:03,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409549710] [2020-10-29 06:55:03,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:55:03,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:55:03,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479828427] [2020-10-29 06:55:03,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:55:03,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:55:03,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:55:03,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:55:03,938 INFO L87 Difference]: Start difference. First operand 27037 states and 31798 transitions. Second operand 7 states.