/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 20:44:42,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 20:44:42,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 20:44:42,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 20:44:42,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 20:44:42,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 20:44:42,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 20:44:42,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 20:44:42,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 20:44:42,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 20:44:42,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 20:44:42,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 20:44:42,377 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 20:44:42,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 20:44:42,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 20:44:42,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 20:44:42,383 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 20:44:42,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 20:44:42,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 20:44:42,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 20:44:42,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 20:44:42,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 20:44:42,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 20:44:42,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 20:44:42,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 20:44:42,399 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 20:44:42,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 20:44:42,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 20:44:42,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 20:44:42,402 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 20:44:42,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 20:44:42,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 20:44:42,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 20:44:42,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 20:44:42,407 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 20:44:42,407 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 20:44:42,408 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 20:44:42,409 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 20:44:42,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 20:44:42,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 20:44:42,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 20:44:42,413 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 20:44:42,473 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 20:44:42,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 20:44:42,476 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 20:44:42,477 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 20:44:42,479 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 20:44:42,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 20:44:42,480 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 20:44:42,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 20:44:42,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 20:44:42,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 20:44:42,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 20:44:42,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 20:44:42,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 20:44:42,481 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 20:44:42,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 20:44:42,482 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 20:44:42,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 20:44:42,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 20:44:42,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 20:44:42,484 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 20:44:42,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 20:44:42,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 20:44:42,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 20:44:42,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 20:44:42,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 20:44:42,485 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 20:44:42,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 20:44:42,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 20:44:42,486 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 20:44:42,486 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 20:44:42,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 20:44:42,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 20:44:42,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 20:44:42,973 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 20:44:42,973 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 20:44:42,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label14.c [2020-10-26 20:44:43,069 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c420448fa/eb3971d8c9b0466db3059ba5c87dda98/FLAGd1f8621c3 [2020-10-26 20:44:43,913 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 20:44:43,914 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label14.c [2020-10-26 20:44:43,932 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c420448fa/eb3971d8c9b0466db3059ba5c87dda98/FLAGd1f8621c3 [2020-10-26 20:44:44,087 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c420448fa/eb3971d8c9b0466db3059ba5c87dda98 [2020-10-26 20:44:44,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 20:44:44,099 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 20:44:44,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 20:44:44,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 20:44:44,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 20:44:44,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:44:44" (1/1) ... [2020-10-26 20:44:44,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7afc6b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:44:44, skipping insertion in model container [2020-10-26 20:44:44,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:44:44" (1/1) ... [2020-10-26 20:44:44,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 20:44:44,194 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 20:44:44,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:44:44,926 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 20:44:45,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:44:45,258 INFO L208 MainTranslator]: Completed translation [2020-10-26 20:44:45,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:44:45 WrapperNode [2020-10-26 20:44:45,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 20:44:45,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 20:44:45,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 20:44:45,261 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 20:44:45,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:44:45" (1/1) ... [2020-10-26 20:44:45,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:44:45" (1/1) ... [2020-10-26 20:44:45,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:44:45" (1/1) ... [2020-10-26 20:44:45,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:44:45" (1/1) ... [2020-10-26 20:44:45,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:44:45" (1/1) ... [2020-10-26 20:44:45,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:44:45" (1/1) ... [2020-10-26 20:44:45,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:44:45" (1/1) ... [2020-10-26 20:44:45,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 20:44:45,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 20:44:45,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 20:44:45,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 20:44:45,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:44:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 20:44:45,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 20:44:45,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 20:44:45,632 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 20:44:45,632 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 20:44:45,632 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 20:44:45,632 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 20:44:45,633 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 20:44:45,633 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 20:44:45,633 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 20:44:45,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 20:44:45,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 20:44:45,633 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 20:44:45,634 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 20:44:45,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 20:44:45,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 20:44:45,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 20:44:45,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 20:44:45,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 20:44:45,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 20:44:47,780 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 20:44:47,781 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 20:44:47,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:44:47 BoogieIcfgContainer [2020-10-26 20:44:47,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 20:44:47,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 20:44:47,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 20:44:47,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 20:44:47,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:44:44" (1/3) ... [2020-10-26 20:44:47,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@463187c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:44:47, skipping insertion in model container [2020-10-26 20:44:47,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:44:45" (2/3) ... [2020-10-26 20:44:47,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@463187c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:44:47, skipping insertion in model container [2020-10-26 20:44:47,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:44:47" (3/3) ... [2020-10-26 20:44:47,793 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label14.c [2020-10-26 20:44:47,804 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 20:44:47,811 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 20:44:47,824 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 20:44:47,871 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 20:44:47,871 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 20:44:47,871 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 20:44:47,871 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 20:44:47,871 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 20:44:47,871 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 20:44:47,871 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 20:44:47,872 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 20:44:47,894 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-26 20:44:47,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-26 20:44:47,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:44:47,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:44:47,913 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:44:47,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:44:47,920 INFO L82 PathProgramCache]: Analyzing trace with hash 972838764, now seen corresponding path program 1 times [2020-10-26 20:44:47,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:44:47,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851801896] [2020-10-26 20:44:47,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:44:48,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:48,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:49,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:53,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:53,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-26 20:44:53,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:44:53,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4918 [2020-10-26 20:44:53,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:53,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 20:44:53,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:44:53,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-26 20:44:53,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 20:44:54,664 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-26 20:44:54,959 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2020-10-26 20:44:55,217 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 74 [2020-10-26 20:44:55,435 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 68 [2020-10-26 20:44:55,601 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2020-10-26 20:44:55,797 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2020-10-26 20:44:56,195 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:44:56,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:44:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:56,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:56,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:56,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:44:56,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:56,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 20:44:56,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:56,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:44:56,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:44:56,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:44:56,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:57,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:44:57,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851801896] [2020-10-26 20:44:57,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:44:57,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-26 20:44:57,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365110562] [2020-10-26 20:44:57,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 20:44:57,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:44:57,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 20:44:57,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:44:57,191 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 12 states. [2020-10-26 20:44:57,753 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-26 20:44:58,957 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 199 DAG size of output: 196 [2020-10-26 20:44:59,998 WARN L193 SmtUtils]: Spent 980.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 196 [2020-10-26 20:45:01,129 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 219 DAG size of output: 216 [2020-10-26 20:45:02,942 WARN L193 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 232 DAG size of output: 213 [2020-10-26 20:45:04,994 WARN L193 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 232 DAG size of output: 210 [2020-10-26 20:45:07,201 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 235 DAG size of output: 207 [2020-10-26 20:45:11,263 WARN L193 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 236 DAG size of output: 204 [2020-10-26 20:45:13,004 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 238 DAG size of output: 200 [2020-10-26 20:45:16,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:45:16,046 INFO L93 Difference]: Finished difference Result 742 states and 1293 transitions. [2020-10-26 20:45:16,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 20:45:16,048 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 177 [2020-10-26 20:45:16,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:45:16,067 INFO L225 Difference]: With dead ends: 742 [2020-10-26 20:45:16,067 INFO L226 Difference]: Without dead ends: 365 [2020-10-26 20:45:16,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-26 20:45:16,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-10-26 20:45:16,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2020-10-26 20:45:16,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-26 20:45:16,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 526 transitions. [2020-10-26 20:45:16,185 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 526 transitions. Word has length 177 [2020-10-26 20:45:16,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:45:16,186 INFO L481 AbstractCegarLoop]: Abstraction has 365 states and 526 transitions. [2020-10-26 20:45:16,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 20:45:16,186 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 526 transitions. [2020-10-26 20:45:16,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-26 20:45:16,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:45:16,193 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:45:16,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 20:45:16,193 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:45:16,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:45:16,194 INFO L82 PathProgramCache]: Analyzing trace with hash 369247263, now seen corresponding path program 1 times [2020-10-26 20:45:16,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:45:16,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948740298] [2020-10-26 20:45:16,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:45:16,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:45:16,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:45:16,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:45:17,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:45:21,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:45:21,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-26 20:45:21,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:45:21,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4871 [2020-10-26 20:45:21,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:45:21,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-26 20:45:21,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:45:21,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-26 20:45:21,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 20:45:22,407 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2020-10-26 20:45:22,658 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 77 [2020-10-26 20:45:22,908 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2020-10-26 20:45:23,109 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2020-10-26 20:45:23,282 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2020-10-26 20:45:23,666 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:45:23,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:45:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:45:23,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:45:23,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:45:23,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:45:23,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:45:23,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 20:45:23,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:45:23,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:45:23,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:45:23,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:45:23,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:45:23,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:45:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:45:23,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:45:23,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:45:23,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:45:23,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:45:23,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-26 20:45:23,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:45:23,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 20:45:23,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:45:23,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:45:23,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:45:24,398 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-10-26 20:45:24,952 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 118 [2020-10-26 20:45:25,513 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:45:25,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948740298] [2020-10-26 20:45:25,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:45:25,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-26 20:45:25,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047329471] [2020-10-26 20:45:25,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-26 20:45:25,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:45:25,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-26 20:45:25,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-26 20:45:25,518 INFO L87 Difference]: Start difference. First operand 365 states and 526 transitions. Second operand 16 states. [2020-10-26 20:45:25,934 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-26 20:45:26,687 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 85 [2020-10-26 20:45:27,061 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 66 [2020-10-26 20:45:27,548 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 91 [2020-10-26 20:45:28,509 WARN L193 SmtUtils]: Spent 886.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 210 [2020-10-26 20:45:29,620 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 230 DAG size of output: 230 [2020-10-26 20:45:31,513 WARN L193 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 241 DAG size of output: 227 [2020-10-26 20:45:32,451 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 98 [2020-10-26 20:45:32,704 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 42 [2020-10-26 20:45:35,197 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 246 DAG size of output: 224 [2020-10-26 20:45:39,003 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 250 DAG size of output: 221 [2020-10-26 20:45:43,684 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 251 DAG size of output: 218 [2020-10-26 20:45:45,006 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 251 DAG size of output: 213 [2020-10-26 20:45:49,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:45:49,228 INFO L93 Difference]: Finished difference Result 987 states and 1593 transitions. [2020-10-26 20:45:49,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 20:45:49,229 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 188 [2020-10-26 20:45:49,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:45:49,237 INFO L225 Difference]: With dead ends: 987 [2020-10-26 20:45:49,238 INFO L226 Difference]: Without dead ends: 743 [2020-10-26 20:45:49,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=216, Invalid=596, Unknown=0, NotChecked=0, Total=812 [2020-10-26 20:45:49,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2020-10-26 20:45:49,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 732. [2020-10-26 20:45:49,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-10-26 20:45:49,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 987 transitions. [2020-10-26 20:45:49,291 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 987 transitions. Word has length 188 [2020-10-26 20:45:49,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:45:49,292 INFO L481 AbstractCegarLoop]: Abstraction has 732 states and 987 transitions. [2020-10-26 20:45:49,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-26 20:45:49,292 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 987 transitions. [2020-10-26 20:45:49,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-26 20:45:49,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:45:49,298 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:45:49,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 20:45:49,299 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:45:49,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:45:49,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1637121549, now seen corresponding path program 1 times [2020-10-26 20:45:49,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:45:49,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843883299] [2020-10-26 20:45:49,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:45:49,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:45:49,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:45:49,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:45:51,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:45:51,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-26 20:45:51,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:45:51,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2347 [2020-10-26 20:45:51,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:45:51,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:45:51,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:45:51,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 20:45:51,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:45:52,215 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:45:52,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:45:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:45:52,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:45:52,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:45:52,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:45:52,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:45:52,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 20:45:52,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:45:52,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:45:52,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:45:52,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:45:52,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:45:52,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:45:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:45:52,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:45:52,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:45:52,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:45:52,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:45:52,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:45:52,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-26 20:45:52,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:45:52,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:45:52,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:45:52,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 20:45:52,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-26 20:45:52,705 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 20:45:52,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843883299] [2020-10-26 20:45:52,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:45:52,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 20:45:52,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632783109] [2020-10-26 20:45:52,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 20:45:52,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:45:52,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 20:45:52,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 20:45:52,711 INFO L87 Difference]: Start difference. First operand 732 states and 987 transitions. Second operand 6 states. [2020-10-26 20:45:53,022 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:45:56,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:45:56,331 INFO L93 Difference]: Finished difference Result 1799 states and 2554 transitions. [2020-10-26 20:45:56,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 20:45:56,333 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 198 [2020-10-26 20:45:56,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:45:56,340 INFO L225 Difference]: With dead ends: 1799 [2020-10-26 20:45:56,341 INFO L226 Difference]: Without dead ends: 1188 [2020-10-26 20:45:56,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:45:56,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2020-10-26 20:45:56,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 1168. [2020-10-26 20:45:56,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1168 states. [2020-10-26 20:45:56,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1630 transitions. [2020-10-26 20:45:56,397 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1630 transitions. Word has length 198 [2020-10-26 20:45:56,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:45:56,398 INFO L481 AbstractCegarLoop]: Abstraction has 1168 states and 1630 transitions. [2020-10-26 20:45:56,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 20:45:56,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1630 transitions. [2020-10-26 20:45:56,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-26 20:45:56,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:45:56,404 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:45:56,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 20:45:56,405 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:45:56,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:45:56,406 INFO L82 PathProgramCache]: Analyzing trace with hash -526946636, now seen corresponding path program 1 times [2020-10-26 20:45:56,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:45:56,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807249268] [2020-10-26 20:45:56,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:45:56,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:45:56,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:45:56,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:45:57,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:45:59,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:00,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:00,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-26 20:46:00,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:46:00,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3786 [2020-10-26 20:46:00,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:00,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:46:00,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:46:00,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-26 20:46:00,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:00,516 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:46:00,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:46:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:00,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:00,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:00,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:46:00,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:46:00,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 20:46:00,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:00,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:46:00,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:46:00,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:46:00,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:00,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:46:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:00,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:00,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:00,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:46:00,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:46:00,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-26 20:46:00,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:00,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:46:00,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:46:00,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 20:46:00,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 20:46:00,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:46:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:00,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:00,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:00,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:46:00,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:46:00,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 20:46:00,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:00,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:46:00,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:46:00,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 20:46:00,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:01,046 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-26 20:46:01,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807249268] [2020-10-26 20:46:01,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:46:01,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:46:01,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852528850] [2020-10-26 20:46:01,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:46:01,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:46:01,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:46:01,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:46:01,049 INFO L87 Difference]: Start difference. First operand 1168 states and 1630 transitions. Second operand 7 states. [2020-10-26 20:46:01,289 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:46:04,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:46:04,797 INFO L93 Difference]: Finished difference Result 2687 states and 3916 transitions. [2020-10-26 20:46:04,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 20:46:04,798 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 207 [2020-10-26 20:46:04,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:46:04,813 INFO L225 Difference]: With dead ends: 2687 [2020-10-26 20:46:04,813 INFO L226 Difference]: Without dead ends: 2218 [2020-10-26 20:46:04,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-26 20:46:04,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2218 states. [2020-10-26 20:46:04,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2218 to 2201. [2020-10-26 20:46:04,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2201 states. [2020-10-26 20:46:04,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2201 states to 2201 states and 3129 transitions. [2020-10-26 20:46:04,902 INFO L78 Accepts]: Start accepts. Automaton has 2201 states and 3129 transitions. Word has length 207 [2020-10-26 20:46:04,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:46:04,903 INFO L481 AbstractCegarLoop]: Abstraction has 2201 states and 3129 transitions. [2020-10-26 20:46:04,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:46:04,903 INFO L276 IsEmpty]: Start isEmpty. Operand 2201 states and 3129 transitions. [2020-10-26 20:46:04,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-26 20:46:04,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:46:04,910 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:46:04,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 20:46:04,911 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:46:04,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:46:04,911 INFO L82 PathProgramCache]: Analyzing trace with hash 436408120, now seen corresponding path program 1 times [2020-10-26 20:46:04,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:46:04,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727006506] [2020-10-26 20:46:04,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:46:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:04,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:05,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:06,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:06,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:06,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-26 20:46:06,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:46:06,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1790 [2020-10-26 20:46:06,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:06,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:46:06,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-26 20:46:06,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 20:46:06,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:07,025 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:46:07,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:46:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:07,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:07,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:07,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:46:07,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:46:07,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 20:46:07,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:07,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:46:07,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:46:07,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:46:07,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:07,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:46:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:07,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:07,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:07,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:46:07,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:46:07,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 20:46:07,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:07,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:46:07,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:46:07,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 20:46:07,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:07,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:46:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:07,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:07,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:07,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:46:07,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:46:07,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 20:46:07,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:07,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:46:07,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:46:07,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:46:07,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:07,320 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 20:46:07,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727006506] [2020-10-26 20:46:07,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:46:07,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:46:07,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196770588] [2020-10-26 20:46:07,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:46:07,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:46:07,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:46:07,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:46:07,322 INFO L87 Difference]: Start difference. First operand 2201 states and 3129 transitions. Second operand 7 states. [2020-10-26 20:46:07,810 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:46:08,436 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:46:11,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:46:11,887 INFO L93 Difference]: Finished difference Result 5962 states and 9518 transitions. [2020-10-26 20:46:11,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:46:11,887 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 209 [2020-10-26 20:46:11,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:46:11,923 INFO L225 Difference]: With dead ends: 5962 [2020-10-26 20:46:11,923 INFO L226 Difference]: Without dead ends: 3882 [2020-10-26 20:46:11,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:46:11,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3882 states. [2020-10-26 20:46:12,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3882 to 3720. [2020-10-26 20:46:12,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3720 states. [2020-10-26 20:46:12,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3720 states to 3720 states and 5040 transitions. [2020-10-26 20:46:12,123 INFO L78 Accepts]: Start accepts. Automaton has 3720 states and 5040 transitions. Word has length 209 [2020-10-26 20:46:12,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:46:12,123 INFO L481 AbstractCegarLoop]: Abstraction has 3720 states and 5040 transitions. [2020-10-26 20:46:12,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:46:12,123 INFO L276 IsEmpty]: Start isEmpty. Operand 3720 states and 5040 transitions. [2020-10-26 20:46:12,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-26 20:46:12,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:46:12,134 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:46:12,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 20:46:12,134 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:46:12,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:46:12,136 INFO L82 PathProgramCache]: Analyzing trace with hash 808915140, now seen corresponding path program 1 times [2020-10-26 20:46:12,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:46:12,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681191154] [2020-10-26 20:46:12,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:46:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:12,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:12,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:14,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:15,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:15,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-26 20:46:15,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:46:15,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3806 [2020-10-26 20:46:15,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:15,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:46:15,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:46:15,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-26 20:46:15,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:16,266 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:46:16,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:46:16,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:16,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:16,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:16,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:46:16,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:46:16,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 20:46:16,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:16,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:46:16,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:46:16,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:46:16,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:16,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:46:16,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:16,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:16,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:16,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:16,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:46:16,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:46:16,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 20:46:16,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:16,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:46:16,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:46:16,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 20:46:16,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:16,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:46:16,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:16,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:16,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:16,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 20:46:16,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:46:16,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 20:46:16,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:16,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:46:16,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:46:16,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 20:46:16,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:16,679 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-26 20:46:16,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681191154] [2020-10-26 20:46:16,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:46:16,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:46:16,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715703491] [2020-10-26 20:46:16,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:46:16,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:46:16,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:46:16,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:46:16,682 INFO L87 Difference]: Start difference. First operand 3720 states and 5040 transitions. Second operand 7 states. [2020-10-26 20:46:16,991 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:46:19,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:46:19,003 INFO L93 Difference]: Finished difference Result 5508 states and 7698 transitions. [2020-10-26 20:46:19,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 20:46:19,010 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 215 [2020-10-26 20:46:19,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:46:19,031 INFO L225 Difference]: With dead ends: 5508 [2020-10-26 20:46:19,031 INFO L226 Difference]: Without dead ends: 3689 [2020-10-26 20:46:19,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:46:19,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3689 states. [2020-10-26 20:46:19,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3689 to 3673. [2020-10-26 20:46:19,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3673 states. [2020-10-26 20:46:19,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3673 states to 3673 states and 4838 transitions. [2020-10-26 20:46:19,171 INFO L78 Accepts]: Start accepts. Automaton has 3673 states and 4838 transitions. Word has length 215 [2020-10-26 20:46:19,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:46:19,172 INFO L481 AbstractCegarLoop]: Abstraction has 3673 states and 4838 transitions. [2020-10-26 20:46:19,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:46:19,172 INFO L276 IsEmpty]: Start isEmpty. Operand 3673 states and 4838 transitions. [2020-10-26 20:46:19,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-26 20:46:19,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:46:19,182 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:46:19,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 20:46:19,182 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:46:19,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:46:19,183 INFO L82 PathProgramCache]: Analyzing trace with hash 439499907, now seen corresponding path program 1 times [2020-10-26 20:46:19,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:46:19,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838911376] [2020-10-26 20:46:19,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:46:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:19,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:19,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:20,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:22,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:22,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-26 20:46:22,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:46:22,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3251 [2020-10-26 20:46:22,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:22,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:46:22,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:46:22,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 20:46:22,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:22,830 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:46:22,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:46:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:22,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:22,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:22,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:46:22,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:46:22,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 20:46:22,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:22,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:46:22,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:46:22,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:46:22,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:22,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:46:22,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:22,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:23,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:23,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:23,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:46:23,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:46:23,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-26 20:46:23,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:23,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:46:23,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:46:23,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 20:46:23,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:23,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:46:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:23,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:23,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:23,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-26 20:46:23,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:46:23,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-26 20:46:23,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:23,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:46:23,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:46:23,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-26 20:46:23,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:23,348 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 20:46:23,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838911376] [2020-10-26 20:46:23,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:46:23,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:46:23,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398271635] [2020-10-26 20:46:23,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:46:23,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:46:23,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:46:23,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:46:23,350 INFO L87 Difference]: Start difference. First operand 3673 states and 4838 transitions. Second operand 8 states. [2020-10-26 20:46:23,615 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-26 20:46:25,249 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-26 20:46:27,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:46:27,512 INFO L93 Difference]: Finished difference Result 9082 states and 12219 transitions. [2020-10-26 20:46:27,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 20:46:27,512 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 243 [2020-10-26 20:46:27,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:46:27,543 INFO L225 Difference]: With dead ends: 9082 [2020-10-26 20:46:27,543 INFO L226 Difference]: Without dead ends: 5530 [2020-10-26 20:46:27,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-26 20:46:27,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5530 states. [2020-10-26 20:46:27,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5530 to 5459. [2020-10-26 20:46:27,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5459 states. [2020-10-26 20:46:27,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5459 states to 5459 states and 7224 transitions. [2020-10-26 20:46:27,739 INFO L78 Accepts]: Start accepts. Automaton has 5459 states and 7224 transitions. Word has length 243 [2020-10-26 20:46:27,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:46:27,740 INFO L481 AbstractCegarLoop]: Abstraction has 5459 states and 7224 transitions. [2020-10-26 20:46:27,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:46:27,740 INFO L276 IsEmpty]: Start isEmpty. Operand 5459 states and 7224 transitions. [2020-10-26 20:46:27,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-26 20:46:27,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:46:27,755 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:46:27,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 20:46:27,755 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:46:27,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:46:27,756 INFO L82 PathProgramCache]: Analyzing trace with hash -126770361, now seen corresponding path program 1 times [2020-10-26 20:46:27,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:46:27,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153273278] [2020-10-26 20:46:27,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:46:27,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:27,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:28,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:31,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:32,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:32,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-26 20:46:32,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:46:32,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-26 20:46:32,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:32,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:46:32,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:46:32,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-26 20:46:32,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:33,140 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:46:33,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:46:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:33,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:33,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:33,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:46:33,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:46:33,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 20:46:33,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:33,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:46:33,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:46:33,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:46:33,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:33,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:46:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:33,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:33,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:33,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:46:33,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:46:33,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 20:46:33,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:33,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:46:33,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:46:33,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:46:33,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:33,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 20:46:33,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:33,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:33,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:33,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-26 20:46:33,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:46:33,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-26 20:46:33,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:33,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:46:33,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:46:33,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-26 20:46:33,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:33,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-26 20:46:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:33,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:33,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:33,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-26 20:46:33,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:46:33,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 20:46:33,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:33,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:46:33,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-26 20:46:33,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:46:33,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:33,788 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 84 proven. 39 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-26 20:46:33,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153273278] [2020-10-26 20:46:33,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:46:33,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:46:33,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341468370] [2020-10-26 20:46:33,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:46:33,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:46:33,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:46:33,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:46:33,790 INFO L87 Difference]: Start difference. First operand 5459 states and 7224 transitions. Second operand 8 states. [2020-10-26 20:46:34,052 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-26 20:46:36,340 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-26 20:46:38,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:46:38,293 INFO L93 Difference]: Finished difference Result 13246 states and 18500 transitions. [2020-10-26 20:46:38,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 20:46:38,294 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 265 [2020-10-26 20:46:38,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:46:38,352 INFO L225 Difference]: With dead ends: 13246 [2020-10-26 20:46:38,352 INFO L226 Difference]: Without dead ends: 7908 [2020-10-26 20:46:38,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-26 20:46:38,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7908 states. [2020-10-26 20:46:38,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7908 to 7634. [2020-10-26 20:46:38,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7634 states. [2020-10-26 20:46:38,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7634 states to 7634 states and 10115 transitions. [2020-10-26 20:46:38,712 INFO L78 Accepts]: Start accepts. Automaton has 7634 states and 10115 transitions. Word has length 265 [2020-10-26 20:46:38,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:46:38,713 INFO L481 AbstractCegarLoop]: Abstraction has 7634 states and 10115 transitions. [2020-10-26 20:46:38,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:46:38,713 INFO L276 IsEmpty]: Start isEmpty. Operand 7634 states and 10115 transitions. [2020-10-26 20:46:38,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-10-26 20:46:38,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:46:38,732 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:46:38,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 20:46:38,733 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:46:38,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:46:38,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1003237542, now seen corresponding path program 1 times [2020-10-26 20:46:38,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:46:38,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912657445] [2020-10-26 20:46:38,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:46:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:38,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:39,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:40,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:40,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:40,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-26 20:46:40,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:46:40,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2045 [2020-10-26 20:46:40,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:40,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:46:40,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-26 20:46:40,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 20:46:40,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:41,221 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:46:41,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:46:41,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:41,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:41,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:41,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:46:41,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:46:41,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 20:46:41,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:41,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:46:41,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:46:41,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:46:41,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:41,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:46:41,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:41,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:41,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:41,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:46:41,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:46:41,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 20:46:41,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:41,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:46:41,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:46:41,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 20:46:41,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:41,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:46:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:41,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:41,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:41,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-26 20:46:41,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:46:41,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-26 20:46:41,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:41,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:46:41,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:46:41,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 20:46:41,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:41,853 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 20:46:41,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912657445] [2020-10-26 20:46:41,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:46:41,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:46:41,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828300022] [2020-10-26 20:46:41,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:46:41,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:46:41,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:46:41,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:46:41,855 INFO L87 Difference]: Start difference. First operand 7634 states and 10115 transitions. Second operand 7 states. [2020-10-26 20:46:42,288 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:46:43,825 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-26 20:46:45,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:46:45,733 INFO L93 Difference]: Finished difference Result 15847 states and 24398 transitions. [2020-10-26 20:46:45,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 20:46:45,734 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 276 [2020-10-26 20:46:45,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:46:45,794 INFO L225 Difference]: With dead ends: 15847 [2020-10-26 20:46:45,795 INFO L226 Difference]: Without dead ends: 11762 [2020-10-26 20:46:45,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:46:45,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11762 states. [2020-10-26 20:46:46,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11762 to 11304. [2020-10-26 20:46:46,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11304 states. [2020-10-26 20:46:46,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11304 states to 11304 states and 15141 transitions. [2020-10-26 20:46:46,220 INFO L78 Accepts]: Start accepts. Automaton has 11304 states and 15141 transitions. Word has length 276 [2020-10-26 20:46:46,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:46:46,220 INFO L481 AbstractCegarLoop]: Abstraction has 11304 states and 15141 transitions. [2020-10-26 20:46:46,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:46:46,221 INFO L276 IsEmpty]: Start isEmpty. Operand 11304 states and 15141 transitions. [2020-10-26 20:46:46,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-26 20:46:46,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:46:46,252 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:46:46,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 20:46:46,252 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:46:46,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:46:46,253 INFO L82 PathProgramCache]: Analyzing trace with hash 271281612, now seen corresponding path program 1 times [2020-10-26 20:46:46,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:46:46,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344807528] [2020-10-26 20:46:46,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:46:46,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:46,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:46,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:46,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:47,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:47,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:47,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:48,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:50,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:51,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:51,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:51,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-26 20:46:51,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-26 20:46:51,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-26 20:46:51,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:51,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:46:51,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:46:51,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-26 20:46:51,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:51,642 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:46:51,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:46:51,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:51,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:51,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:51,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:46:51,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:46:51,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 20:46:51,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:51,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:46:51,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:46:51,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:46:51,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:51,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:46:51,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:51,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:52,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:52,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 20:46:52,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:46:52,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-26 20:46:52,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:52,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:46:52,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:46:52,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 20:46:52,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:52,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 20:46:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:52,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:52,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:52,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:52,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-26 20:46:52,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:46:52,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 20:46:52,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:52,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:46:52,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:46:52,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-26 20:46:52,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:52,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 20:46:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:52,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:52,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:52,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:46:52,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:46:52,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 20:46:52,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:52,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:46:52,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-26 20:46:52,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:46:52,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:52,489 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 116 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-26 20:46:52,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344807528] [2020-10-26 20:46:52,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:46:52,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:46:52,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762899586] [2020-10-26 20:46:52,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:46:52,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:46:52,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:46:52,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:46:52,492 INFO L87 Difference]: Start difference. First operand 11304 states and 15141 transitions. Second operand 8 states. [2020-10-26 20:46:52,746 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-26 20:46:54,075 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-26 20:46:56,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:46:56,760 INFO L93 Difference]: Finished difference Result 25778 states and 34947 transitions. [2020-10-26 20:46:56,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 20:46:56,761 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 298 [2020-10-26 20:46:56,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:46:56,835 INFO L225 Difference]: With dead ends: 25778 [2020-10-26 20:46:56,835 INFO L226 Difference]: Without dead ends: 14595 [2020-10-26 20:46:56,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-26 20:46:56,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14595 states. [2020-10-26 20:46:57,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14595 to 14347. [2020-10-26 20:46:57,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14347 states. [2020-10-26 20:46:57,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14347 states to 14347 states and 19292 transitions. [2020-10-26 20:46:57,250 INFO L78 Accepts]: Start accepts. Automaton has 14347 states and 19292 transitions. Word has length 298 [2020-10-26 20:46:57,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:46:57,250 INFO L481 AbstractCegarLoop]: Abstraction has 14347 states and 19292 transitions. [2020-10-26 20:46:57,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:46:57,251 INFO L276 IsEmpty]: Start isEmpty. Operand 14347 states and 19292 transitions. [2020-10-26 20:46:57,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-26 20:46:57,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:46:57,290 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 20:46:57,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 20:46:57,290 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:46:57,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:46:57,291 INFO L82 PathProgramCache]: Analyzing trace with hash 302827223, now seen corresponding path program 2 times [2020-10-26 20:46:57,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:46:57,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167061295] [2020-10-26 20:46:57,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:46:57,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:57,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:57,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:57,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:57,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:58,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:59,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:00,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:02,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:02,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-26 20:47:02,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 20:47:02,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-26 20:47:02,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:02,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:47:02,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:47:02,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 20:47:02,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:02,703 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:47:02,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:47:02,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:02,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:02,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:02,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:47:02,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:02,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 20:47:02,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:02,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:47:02,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:47:02,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:47:02,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:02,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:47:02,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:02,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:02,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:03,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:03,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 20:47:03,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:47:03,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-26 20:47:03,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:03,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:47:03,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:47:03,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-26 20:47:03,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:03,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 20:47:03,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:03,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:03,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:03,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:47:03,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:03,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 20:47:03,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:03,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:47:03,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:47:03,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 20:47:03,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:03,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-26 20:47:03,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:03,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:03,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:03,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:03,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-26 20:47:03,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:47:03,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 20:47:03,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:03,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:47:03,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-26 20:47:03,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:47:03,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:03,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-26 20:47:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:03,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:03,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:03,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:47:03,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:03,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 20:47:03,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:03,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:47:03,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-26 20:47:03,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:47:03,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:03,348 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-26 20:47:03,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167061295] [2020-10-26 20:47:03,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:47:03,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 20:47:03,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566524352] [2020-10-26 20:47:03,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 20:47:03,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:47:03,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 20:47:03,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 20:47:03,350 INFO L87 Difference]: Start difference. First operand 14347 states and 19292 transitions. Second operand 5 states. [2020-10-26 20:47:03,580 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:47:05,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:47:05,035 INFO L93 Difference]: Finished difference Result 24598 states and 33151 transitions. [2020-10-26 20:47:05,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 20:47:05,036 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 309 [2020-10-26 20:47:05,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:47:05,084 INFO L225 Difference]: With dead ends: 24598 [2020-10-26 20:47:05,084 INFO L226 Difference]: Without dead ends: 14453 [2020-10-26 20:47:05,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 20:47:05,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14453 states. [2020-10-26 20:47:05,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14453 to 14347. [2020-10-26 20:47:05,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14347 states. [2020-10-26 20:47:05,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14347 states to 14347 states and 19288 transitions. [2020-10-26 20:47:05,482 INFO L78 Accepts]: Start accepts. Automaton has 14347 states and 19288 transitions. Word has length 309 [2020-10-26 20:47:05,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:47:05,482 INFO L481 AbstractCegarLoop]: Abstraction has 14347 states and 19288 transitions. [2020-10-26 20:47:05,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 20:47:05,483 INFO L276 IsEmpty]: Start isEmpty. Operand 14347 states and 19288 transitions. [2020-10-26 20:47:05,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-26 20:47:05,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:47:05,522 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 20:47:05,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 20:47:05,522 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:47:05,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:47:05,523 INFO L82 PathProgramCache]: Analyzing trace with hash -600093355, now seen corresponding path program 1 times [2020-10-26 20:47:05,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:47:05,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992216230] [2020-10-26 20:47:05,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:47:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:05,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:05,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:05,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:06,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:08,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:10,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:10,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-26 20:47:10,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:47:10,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-26 20:47:10,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:10,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:47:10,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-26 20:47:10,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 20:47:10,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:10,900 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:47:10,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:47:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:10,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:10,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:10,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:47:10,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:10,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 20:47:10,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:10,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:47:10,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:47:10,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:47:10,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:11,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:47:11,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:11,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:11,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:11,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 20:47:11,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:11,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-26 20:47:11,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:11,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:47:11,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:47:11,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 20:47:11,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:11,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 20:47:11,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:11,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:11,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:11,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:47:11,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:11,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 20:47:11,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:11,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:47:11,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:47:11,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:47:11,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:11,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-26 20:47:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:11,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:11,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:11,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-26 20:47:11,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:11,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 20:47:11,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:11,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:47:11,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-26 20:47:11,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:47:11,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:11,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-26 20:47:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:11,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:11,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:11,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:47:11,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:11,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 20:47:11,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:11,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:47:11,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-26 20:47:11,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:47:11,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:11,353 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 134 proven. 15 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-26 20:47:11,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992216230] [2020-10-26 20:47:11,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:47:11,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:47:11,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814542310] [2020-10-26 20:47:11,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:47:11,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:47:11,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:47:11,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:47:11,355 INFO L87 Difference]: Start difference. First operand 14347 states and 19288 transitions. Second operand 7 states. [2020-10-26 20:47:11,747 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-26 20:47:12,152 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:47:17,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:47:17,328 INFO L93 Difference]: Finished difference Result 50945 states and 70540 transitions. [2020-10-26 20:47:17,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:47:17,329 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 309 [2020-10-26 20:47:17,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:47:17,451 INFO L225 Difference]: With dead ends: 50945 [2020-10-26 20:47:17,451 INFO L226 Difference]: Without dead ends: 36719 [2020-10-26 20:47:17,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:47:17,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36719 states. [2020-10-26 20:47:18,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36719 to 36507. [2020-10-26 20:47:18,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36507 states. [2020-10-26 20:47:18,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36507 states to 36507 states and 47566 transitions. [2020-10-26 20:47:18,728 INFO L78 Accepts]: Start accepts. Automaton has 36507 states and 47566 transitions. Word has length 309 [2020-10-26 20:47:18,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:47:18,729 INFO L481 AbstractCegarLoop]: Abstraction has 36507 states and 47566 transitions. [2020-10-26 20:47:18,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:47:18,729 INFO L276 IsEmpty]: Start isEmpty. Operand 36507 states and 47566 transitions. [2020-10-26 20:47:18,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-26 20:47:18,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:47:18,781 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:47:18,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 20:47:18,782 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:47:18,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:47:18,783 INFO L82 PathProgramCache]: Analyzing trace with hash -810076578, now seen corresponding path program 1 times [2020-10-26 20:47:18,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:47:18,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20368708] [2020-10-26 20:47:18,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:47:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:18,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:19,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:19,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:19,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:19,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:19,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:21,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:23,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:23,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-26 20:47:23,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 20:47:23,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-26 20:47:23,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:23,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:47:23,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:47:23,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-26 20:47:23,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:24,205 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:47:24,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:47:24,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:24,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:24,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:24,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:47:24,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:24,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 20:47:24,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:24,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:47:24,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:47:24,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:47:24,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:24,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:47:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:24,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:24,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:24,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:24,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 20:47:24,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:47:24,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-26 20:47:24,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:24,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:47:24,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:47:24,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 20:47:24,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:24,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 20:47:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:24,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:24,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:24,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-26 20:47:24,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:24,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 20:47:24,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:24,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:47:24,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:47:24,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-26 20:47:24,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:24,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 20:47:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:24,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:24,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:24,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:47:24,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:24,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 20:47:24,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:24,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:47:24,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-26 20:47:24,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:47:24,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:24,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-26 20:47:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:24,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:24,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:24,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-26 20:47:24,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:24,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 20:47:24,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:24,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:47:24,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-26 20:47:24,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:47:24,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:24,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-26 20:47:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:24,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:24,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:24,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:47:24,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:24,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 20:47:24,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:24,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:47:24,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-26 20:47:24,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:47:24,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:25,044 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 144 proven. 41 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-26 20:47:25,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20368708] [2020-10-26 20:47:25,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:47:25,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:47:25,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235833396] [2020-10-26 20:47:25,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:47:25,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:47:25,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:47:25,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:47:25,046 INFO L87 Difference]: Start difference. First operand 36507 states and 47566 transitions. Second operand 8 states. [2020-10-26 20:47:25,385 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-26 20:47:29,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:47:29,233 INFO L93 Difference]: Finished difference Result 86017 states and 112801 transitions. [2020-10-26 20:47:29,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 20:47:29,233 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 325 [2020-10-26 20:47:29,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:47:29,436 INFO L225 Difference]: With dead ends: 86017 [2020-10-26 20:47:29,436 INFO L226 Difference]: Without dead ends: 54944 [2020-10-26 20:47:29,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-26 20:47:29,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54944 states. [2020-10-26 20:47:31,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54944 to 54863. [2020-10-26 20:47:31,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54863 states. [2020-10-26 20:47:31,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54863 states to 54863 states and 71742 transitions. [2020-10-26 20:47:31,323 INFO L78 Accepts]: Start accepts. Automaton has 54863 states and 71742 transitions. Word has length 325 [2020-10-26 20:47:31,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:47:31,324 INFO L481 AbstractCegarLoop]: Abstraction has 54863 states and 71742 transitions. [2020-10-26 20:47:31,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:47:31,324 INFO L276 IsEmpty]: Start isEmpty. Operand 54863 states and 71742 transitions. [2020-10-26 20:47:31,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-26 20:47:31,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:47:31,373 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 20:47:31,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 20:47:31,373 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:47:31,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:47:31,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1617777682, now seen corresponding path program 1 times [2020-10-26 20:47:31,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:47:31,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283490553] [2020-10-26 20:47:31,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:47:31,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:31,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:31,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:31,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:32,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:32,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:33,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:34,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:36,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:36,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 354 [2020-10-26 20:47:36,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 20:47:36,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-26 20:47:36,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:36,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 20:47:36,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:47:36,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-26 20:47:36,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:36,785 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:47:36,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:47:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:36,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:36,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:36,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:47:36,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:36,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 20:47:36,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:36,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:47:36,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:47:36,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:47:36,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:36,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:47:36,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:36,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:36,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:36,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:47:36,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:36,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 20:47:36,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:36,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:47:36,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:47:36,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:47:36,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:36,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 20:47:36,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:37,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:37,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:37,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-26 20:47:37,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:37,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-26 20:47:37,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:37,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:47:37,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:47:37,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-26 20:47:37,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:37,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-26 20:47:37,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:37,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:37,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:37,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-26 20:47:37,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:37,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 20:47:37,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:37,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:47:37,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:47:37,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-26 20:47:37,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:37,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-26 20:47:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:37,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:37,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:37,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:47:37,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:37,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 20:47:37,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:37,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:47:37,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-26 20:47:37,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:47:37,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:37,571 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 153 proven. 21 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-26 20:47:37,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283490553] [2020-10-26 20:47:37,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:47:37,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:47:37,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724249880] [2020-10-26 20:47:37,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:47:37,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:47:37,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:47:37,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:47:37,573 INFO L87 Difference]: Start difference. First operand 54863 states and 71742 transitions. Second operand 8 states. [2020-10-26 20:47:37,821 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-26 20:47:39,464 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-26 20:47:42,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:47:42,320 INFO L93 Difference]: Finished difference Result 139609 states and 187885 transitions. [2020-10-26 20:47:42,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:47:42,321 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 336 [2020-10-26 20:47:42,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:47:42,891 INFO L225 Difference]: With dead ends: 139609 [2020-10-26 20:47:42,892 INFO L226 Difference]: Without dead ends: 87742 [2020-10-26 20:47:42,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:47:43,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87742 states. [2020-10-26 20:47:45,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87742 to 82577. [2020-10-26 20:47:45,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82577 states. [2020-10-26 20:47:45,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82577 states to 82577 states and 109234 transitions. [2020-10-26 20:47:45,511 INFO L78 Accepts]: Start accepts. Automaton has 82577 states and 109234 transitions. Word has length 336 [2020-10-26 20:47:45,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:47:45,511 INFO L481 AbstractCegarLoop]: Abstraction has 82577 states and 109234 transitions. [2020-10-26 20:47:45,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:47:45,511 INFO L276 IsEmpty]: Start isEmpty. Operand 82577 states and 109234 transitions. [2020-10-26 20:47:45,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-26 20:47:45,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:47:45,595 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-26 20:47:45,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 20:47:45,595 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:47:45,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:47:45,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1428106448, now seen corresponding path program 1 times [2020-10-26 20:47:45,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:47:45,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488762302] [2020-10-26 20:47:45,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:47:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:45,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:46,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:47,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:47,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:50,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:50,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:50,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 352 [2020-10-26 20:47:50,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:47:50,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5128 [2020-10-26 20:47:50,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:50,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:47:50,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:47:50,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-26 20:47:50,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:51,123 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:47:51,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:47:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:51,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:51,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:51,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:47:51,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:51,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 20:47:51,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:51,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:47:51,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:47:51,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:47:51,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:51,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:47:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:51,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:51,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:51,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:47:51,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:51,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 20:47:51,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:51,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:47:51,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:47:51,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 20:47:51,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:51,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:47:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:51,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:51,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:51,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-26 20:47:51,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:51,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-26 20:47:51,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:51,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:47:51,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:47:51,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-26 20:47:51,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:52,086 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 168 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 20:47:52,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488762302] [2020-10-26 20:47:52,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:47:52,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:47:52,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615994924] [2020-10-26 20:47:52,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:47:52,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:47:52,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:47:52,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:47:52,089 INFO L87 Difference]: Start difference. First operand 82577 states and 109234 transitions. Second operand 8 states. [2020-10-26 20:47:52,401 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-26 20:47:55,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:47:55,216 INFO L93 Difference]: Finished difference Result 139848 states and 184781 transitions. [2020-10-26 20:47:55,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 20:47:55,217 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 338 [2020-10-26 20:47:55,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:47:55,446 INFO L225 Difference]: With dead ends: 139848 [2020-10-26 20:47:55,446 INFO L226 Difference]: Without dead ends: 82193 [2020-10-26 20:47:55,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-26 20:47:55,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82193 states. [2020-10-26 20:47:58,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82193 to 81510. [2020-10-26 20:47:58,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81510 states. [2020-10-26 20:47:58,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81510 states to 81510 states and 107482 transitions. [2020-10-26 20:47:58,484 INFO L78 Accepts]: Start accepts. Automaton has 81510 states and 107482 transitions. Word has length 338 [2020-10-26 20:47:58,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:47:58,485 INFO L481 AbstractCegarLoop]: Abstraction has 81510 states and 107482 transitions. [2020-10-26 20:47:58,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:47:58,485 INFO L276 IsEmpty]: Start isEmpty. Operand 81510 states and 107482 transitions. [2020-10-26 20:47:58,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-10-26 20:47:58,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:47:58,574 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 20:47:58,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 20:47:58,574 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:47:58,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:47:58,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1971520435, now seen corresponding path program 1 times [2020-10-26 20:47:58,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:47:58,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950265263] [2020-10-26 20:47:58,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:47:58,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:58,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:59,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:59,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:59,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:59,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:48:00,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:48:03,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:48:03,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 366 [2020-10-26 20:48:03,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 20:48:03,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-26 20:48:03,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:48:03,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:48:03,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-26 20:48:03,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 20:48:03,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-26 20:48:04,057 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:48:04,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:48:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:48:04,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:48:04,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:48:04,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:48:04,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:48:04,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 20:48:04,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:48:04,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:48:04,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:48:04,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:48:04,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:48:04,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:48:04,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:48:04,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:48:04,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:48:04,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:48:04,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:48:04,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 20:48:04,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:48:04,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:48:04,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:48:04,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 20:48:04,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:48:04,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:48:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:48:04,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:48:04,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:48:04,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-26 20:48:04,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:48:04,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-26 20:48:04,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:48:04,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:48:04,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:48:04,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-26 20:48:04,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:48:04,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-26 20:48:04,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:48:04,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:48:04,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:48:04,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-26 20:48:04,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:48:04,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 20:48:04,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:48:04,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:48:04,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-26 20:48:04,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:48:04,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:48:04,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-26 20:48:04,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:48:04,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:48:04,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:48:04,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-26 20:48:04,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:48:04,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:48:04,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:48:04,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:48:04,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-26 20:48:04,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:48:04,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:48:04,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-26 20:48:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:48:04,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:48:04,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:48:04,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:48:04,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:48:04,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 20:48:04,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:48:04,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:48:04,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-26 20:48:04,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:48:04,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:48:04,787 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 182 proven. 57 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-10-26 20:48:04,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950265263] [2020-10-26 20:48:04,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:48:04,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:48:04,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453886398] [2020-10-26 20:48:04,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:48:04,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:48:04,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:48:04,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:48:04,789 INFO L87 Difference]: Start difference. First operand 81510 states and 107482 transitions. Second operand 8 states. [2020-10-26 20:48:05,299 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-26 20:48:07,101 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 161