/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=DEEPEST --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/Problem18_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:03:53,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:03:53,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:03:53,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:03:53,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:03:53,245 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:03:53,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:03:53,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:03:53,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:03:53,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:03:53,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:03:53,258 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:03:53,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:03:53,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:03:53,263 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:03:53,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:03:53,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:03:53,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:03:53,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:03:53,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:03:53,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:03:53,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:03:53,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:03:53,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:03:53,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:03:53,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:03:53,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:03:53,328 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:03:53,329 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:03:53,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:03:53,331 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:03:53,332 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:03:53,334 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:03:53,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:03:53,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:03:53,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:03:53,343 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:03:53,344 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:03:53,344 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:03:53,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:03:53,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:03:53,347 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 [2020-10-27 19:03:53,414 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:03:53,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:03:53,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:03:53,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:03:53,417 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:03:53,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:03:53,417 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:03:53,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:03:53,417 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:03:53,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:03:53,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:03:53,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:03:53,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:03:53,418 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:03:53,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:03:53,419 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:03:53,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:03:53,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:03:53,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:03:53,420 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:03:53,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:03:53,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:03:53,420 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:03:53,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:03:53,421 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:03:53,421 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:03:53,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:03:53,421 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:03:53,422 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:03:53,422 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:03:53,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:03:53,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:03:53,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:03:53,896 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:03:53,897 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:03:53,898 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label03.c [2020-10-27 19:03:54,009 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9cec56cdb/95e9708c1f254a5eb02338c32fed127d/FLAGa06740e54 [2020-10-27 19:03:55,066 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:03:55,067 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label03.c [2020-10-27 19:03:55,095 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9cec56cdb/95e9708c1f254a5eb02338c32fed127d/FLAGa06740e54 [2020-10-27 19:03:55,599 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9cec56cdb/95e9708c1f254a5eb02338c32fed127d [2020-10-27 19:03:55,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:03:55,611 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:03:55,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:03:55,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:03:55,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:03:55,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:03:55" (1/1) ... [2020-10-27 19:03:55,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30d2feda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:03:55, skipping insertion in model container [2020-10-27 19:03:55,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:03:55" (1/1) ... [2020-10-27 19:03:55,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:03:55,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:03:56,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:03:56,979 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:03:57,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:03:57,599 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:03:57,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:03:57 WrapperNode [2020-10-27 19:03:57,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:03:57,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:03:57,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:03:57,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:03:57,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:03:57" (1/1) ... [2020-10-27 19:03:57,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:03:57" (1/1) ... [2020-10-27 19:03:57,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:03:57" (1/1) ... [2020-10-27 19:03:57,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:03:57" (1/1) ... [2020-10-27 19:03:57,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:03:57" (1/1) ... [2020-10-27 19:03:57,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:03:57" (1/1) ... [2020-10-27 19:03:57,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:03:57" (1/1) ... [2020-10-27 19:03:58,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:03:58,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:03:58,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:03:58,006 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:03:58,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:03:57" (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 [2020-10-27 19:03:58,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:03:58,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:03:58,110 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:03:58,110 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 19:03:58,111 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 19:03:58,111 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 19:03:58,111 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:03:58,113 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 19:03:58,113 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 19:03:58,113 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 19:03:58,115 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:03:58,115 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:03:58,115 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:03:58,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:03:58,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 19:03:58,117 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 19:03:58,117 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:03:58,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:03:58,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:03:58,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:03:58,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:03:58,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:03:58,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:04:02,645 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:04:02,646 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 19:04:02,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:04:02 BoogieIcfgContainer [2020-10-27 19:04:02,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:04:02,654 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:04:02,654 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:04:02,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:04:02,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:03:55" (1/3) ... [2020-10-27 19:04:02,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@301508c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:04:02, skipping insertion in model container [2020-10-27 19:04:02,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:03:57" (2/3) ... [2020-10-27 19:04:02,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@301508c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:04:02, skipping insertion in model container [2020-10-27 19:04:02,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:04:02" (3/3) ... [2020-10-27 19:04:02,663 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label03.c [2020-10-27 19:04:02,674 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:04:02,679 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:04:02,690 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:04:02,725 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:04:02,725 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:04:02,725 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:04:02,725 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:04:02,725 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:04:02,726 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:04:02,726 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:04:02,726 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:04:02,762 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 19:04:02,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-27 19:04:02,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:04:02,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:04:02,770 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:04:02,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:04:02,777 INFO L82 PathProgramCache]: Analyzing trace with hash -341842224, now seen corresponding path program 1 times [2020-10-27 19:04:02,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:04:02,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472030046] [2020-10-27 19:04:02,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:04:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:02,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:03,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:03,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 19:04:03,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:04:03,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 478 [2020-10-27 19:04:03,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:03,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:04:03,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:04:03,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 19:04:03,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:04:03,610 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 19:04:03,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:04:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:03,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:03,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:03,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:04:03,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:04:03,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 19:04:03,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:03,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:04:03,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:04:03,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:04:03,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:04:03,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:04:03,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472030046] [2020-10-27 19:04:03,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:04:03,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 19:04:03,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191136286] [2020-10-27 19:04:03,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 19:04:03,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:04:03,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 19:04:03,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 19:04:03,746 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 4 states. [2020-10-27 19:04:14,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:04:14,009 INFO L93 Difference]: Finished difference Result 2275 states and 4355 transitions. [2020-10-27 19:04:14,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:04:14,013 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-27 19:04:14,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:04:14,066 INFO L225 Difference]: With dead ends: 2275 [2020-10-27 19:04:14,066 INFO L226 Difference]: Without dead ends: 1433 [2020-10-27 19:04:14,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:04:14,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-10-27 19:04:14,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1426. [2020-10-27 19:04:14,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2020-10-27 19:04:14,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 2230 transitions. [2020-10-27 19:04:14,311 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 2230 transitions. Word has length 18 [2020-10-27 19:04:14,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:04:14,312 INFO L481 AbstractCegarLoop]: Abstraction has 1426 states and 2230 transitions. [2020-10-27 19:04:14,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 19:04:14,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 2230 transitions. [2020-10-27 19:04:14,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 19:04:14,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:04:14,318 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 19:04:14,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:04:14,319 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:04:14,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:04:14,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1301225688, now seen corresponding path program 1 times [2020-10-27 19:04:14,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:04:14,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745245308] [2020-10-27 19:04:14,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:04:14,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:14,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:14,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:15,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:15,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 19:04:15,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:04:15,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 729 [2020-10-27 19:04:15,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:15,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:04:15,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 19:04:15,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 19:04:15,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:04:15,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:04:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:15,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:15,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:15,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:04:15,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:04:15,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 19:04:15,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:15,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:04:15,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:04:15,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:04:15,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:04:15,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:04:15,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:15,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:15,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:15,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 19:04:15,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:04:15,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-27 19:04:15,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:15,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:04:15,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:04:15,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 19:04:15,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:04:15,470 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:04:15,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745245308] [2020-10-27 19:04:15,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:04:15,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:04:15,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343513630] [2020-10-27 19:04:15,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:04:15,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:04:15,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:04:15,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:04:15,478 INFO L87 Difference]: Start difference. First operand 1426 states and 2230 transitions. Second operand 5 states. [2020-10-27 19:04:25,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:04:25,964 INFO L93 Difference]: Finished difference Result 4278 states and 6736 transitions. [2020-10-27 19:04:25,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:04:25,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-27 19:04:25,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:04:25,987 INFO L225 Difference]: With dead ends: 4278 [2020-10-27 19:04:25,987 INFO L226 Difference]: Without dead ends: 2858 [2020-10-27 19:04:25,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:04:25,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2858 states. [2020-10-27 19:04:26,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2858 to 2854. [2020-10-27 19:04:26,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2854 states. [2020-10-27 19:04:26,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2854 states to 2854 states and 4027 transitions. [2020-10-27 19:04:26,076 INFO L78 Accepts]: Start accepts. Automaton has 2854 states and 4027 transitions. Word has length 88 [2020-10-27 19:04:26,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:04:26,077 INFO L481 AbstractCegarLoop]: Abstraction has 2854 states and 4027 transitions. [2020-10-27 19:04:26,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:04:26,077 INFO L276 IsEmpty]: Start isEmpty. Operand 2854 states and 4027 transitions. [2020-10-27 19:04:26,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 19:04:26,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:04:26,081 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:04:26,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:04:26,082 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:04:26,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:04:26,082 INFO L82 PathProgramCache]: Analyzing trace with hash 123231312, now seen corresponding path program 1 times [2020-10-27 19:04:26,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:04:26,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081019850] [2020-10-27 19:04:26,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:04:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:26,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:26,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:26,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:26,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 19:04:26,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:04:26,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 839 [2020-10-27 19:04:26,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:26,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:04:26,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-27 19:04:26,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 19:04:26,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:04:27,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:04:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:27,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:27,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:27,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:04:27,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:04:27,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 19:04:27,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:27,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:04:27,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:04:27,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:04:27,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:04:27,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:04:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:27,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:27,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:27,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 19:04:27,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:04:27,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 19:04:27,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:27,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:04:27,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:04:27,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 19:04:27,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:04:27,284 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:04:27,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081019850] [2020-10-27 19:04:27,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:04:27,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:04:27,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464507361] [2020-10-27 19:04:27,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:04:27,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:04:27,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:04:27,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:04:27,287 INFO L87 Difference]: Start difference. First operand 2854 states and 4027 transitions. Second operand 5 states. [2020-10-27 19:04:37,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:04:37,618 INFO L93 Difference]: Finished difference Result 7137 states and 10361 transitions. [2020-10-27 19:04:37,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:04:37,622 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-10-27 19:04:37,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:04:37,644 INFO L225 Difference]: With dead ends: 7137 [2020-10-27 19:04:37,645 INFO L226 Difference]: Without dead ends: 4289 [2020-10-27 19:04:37,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:04:37,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4289 states. [2020-10-27 19:04:37,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4289 to 4277. [2020-10-27 19:04:37,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4277 states. [2020-10-27 19:04:37,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4277 states to 4277 states and 5829 transitions. [2020-10-27 19:04:37,761 INFO L78 Accepts]: Start accepts. Automaton has 4277 states and 5829 transitions. Word has length 92 [2020-10-27 19:04:37,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:04:37,762 INFO L481 AbstractCegarLoop]: Abstraction has 4277 states and 5829 transitions. [2020-10-27 19:04:37,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:04:37,762 INFO L276 IsEmpty]: Start isEmpty. Operand 4277 states and 5829 transitions. [2020-10-27 19:04:37,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-27 19:04:37,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:04:37,765 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 19:04:37,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:04:37,766 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:04:37,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:04:37,767 INFO L82 PathProgramCache]: Analyzing trace with hash -449557968, now seen corresponding path program 1 times [2020-10-27 19:04:37,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:04:37,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348459300] [2020-10-27 19:04:37,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:04:37,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:37,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:37,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:38,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:38,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 19:04:38,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:04:38,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 717 [2020-10-27 19:04:38,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:38,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:04:38,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-27 19:04:38,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 19:04:38,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:04:38,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:04:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:38,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:38,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:38,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:04:38,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:04:38,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:04:38,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:38,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:04:38,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:04:38,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:04:38,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 44 [2020-10-27 19:04:38,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:04:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:38,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:38,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:38,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 19:04:38,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:04:38,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 19:04:38,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:38,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:04:38,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:04:38,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 19:04:38,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:04:38,877 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:04:38,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348459300] [2020-10-27 19:04:38,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:04:38,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:04:38,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520511981] [2020-10-27 19:04:38,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:04:38,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:04:38,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:04:38,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:04:38,891 INFO L87 Difference]: Start difference. First operand 4277 states and 5829 transitions. Second operand 5 states. [2020-10-27 19:04:49,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:04:49,427 INFO L93 Difference]: Finished difference Result 10687 states and 15093 transitions. [2020-10-27 19:04:49,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:04:49,429 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-27 19:04:49,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:04:49,465 INFO L225 Difference]: With dead ends: 10687 [2020-10-27 19:04:49,466 INFO L226 Difference]: Without dead ends: 6416 [2020-10-27 19:04:49,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:04:49,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6416 states. [2020-10-27 19:04:49,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6416 to 6404. [2020-10-27 19:04:49,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6404 states. [2020-10-27 19:04:49,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6404 states to 6404 states and 8252 transitions. [2020-10-27 19:04:49,634 INFO L78 Accepts]: Start accepts. Automaton has 6404 states and 8252 transitions. Word has length 108 [2020-10-27 19:04:49,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:04:49,635 INFO L481 AbstractCegarLoop]: Abstraction has 6404 states and 8252 transitions. [2020-10-27 19:04:49,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:04:49,635 INFO L276 IsEmpty]: Start isEmpty. Operand 6404 states and 8252 transitions. [2020-10-27 19:04:49,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-27 19:04:49,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:04:49,638 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 19:04:49,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 19:04:49,639 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:04:49,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:04:49,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1846270480, now seen corresponding path program 1 times [2020-10-27 19:04:49,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:04:49,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511380926] [2020-10-27 19:04:49,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:04:49,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:49,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:49,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:51,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:51,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-27 19:04:51,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:04:51,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1390 [2020-10-27 19:04:51,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:51,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:04:51,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-27 19:04:51,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 19:04:51,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:04:51,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:04:51,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:51,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:51,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:51,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:04:51,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:04:51,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 19:04:51,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:51,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:04:51,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:04:51,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:04:51,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:04:51,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:04:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:51,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:51,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:51,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 19:04:51,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:04:51,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 19:04:51,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:51,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:04:51,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:04:51,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 19:04:51,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:04:51,393 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:04:51,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511380926] [2020-10-27 19:04:51,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:04:51,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:04:51,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765853254] [2020-10-27 19:04:51,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:04:51,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:04:51,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:04:51,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:04:51,398 INFO L87 Difference]: Start difference. First operand 6404 states and 8252 transitions. Second operand 5 states. [2020-10-27 19:05:02,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:05:02,901 INFO L93 Difference]: Finished difference Result 19196 states and 25059 transitions. [2020-10-27 19:05:02,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:05:02,902 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-10-27 19:05:02,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:05:02,976 INFO L225 Difference]: With dead ends: 19196 [2020-10-27 19:05:02,977 INFO L226 Difference]: Without dead ends: 12798 [2020-10-27 19:05:02,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:05:03,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12798 states. [2020-10-27 19:05:03,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12798 to 12782. [2020-10-27 19:05:03,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12782 states. [2020-10-27 19:05:03,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12782 states to 12782 states and 15714 transitions. [2020-10-27 19:05:03,362 INFO L78 Accepts]: Start accepts. Automaton has 12782 states and 15714 transitions. Word has length 140 [2020-10-27 19:05:03,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:05:03,363 INFO L481 AbstractCegarLoop]: Abstraction has 12782 states and 15714 transitions. [2020-10-27 19:05:03,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:05:03,364 INFO L276 IsEmpty]: Start isEmpty. Operand 12782 states and 15714 transitions. [2020-10-27 19:05:03,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-27 19:05:03,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:05:03,367 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 19:05:03,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 19:05:03,368 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:05:03,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:05:03,368 INFO L82 PathProgramCache]: Analyzing trace with hash 275008156, now seen corresponding path program 1 times [2020-10-27 19:05:03,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:05:03,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338975771] [2020-10-27 19:05:03,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:05:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:03,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:03,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:04,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:04,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-27 19:05:04,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:05:04,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 920 [2020-10-27 19:05:04,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:05:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 19:05:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 19:05:04,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:05:04,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:05:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:04,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:04,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:04,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:05:04,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:04,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:05:04,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:04,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:05:04,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:05:04,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:05:04,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:04,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:05:04,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:04,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:04,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:04,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 19:05:04,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:04,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-27 19:05:04,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:04,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:05:04,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:05:04,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-27 19:05:04,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:04,790 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:05:04,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338975771] [2020-10-27 19:05:04,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:05:04,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:05:04,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101241297] [2020-10-27 19:05:04,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:05:04,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:05:04,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:05:04,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:05:04,794 INFO L87 Difference]: Start difference. First operand 12782 states and 15714 transitions. Second operand 5 states. [2020-10-27 19:05:15,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:05:15,454 INFO L93 Difference]: Finished difference Result 29825 states and 37922 transitions. [2020-10-27 19:05:15,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:05:15,456 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-27 19:05:15,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:05:15,517 INFO L225 Difference]: With dead ends: 29825 [2020-10-27 19:05:15,518 INFO L226 Difference]: Without dead ends: 17049 [2020-10-27 19:05:15,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:05:15,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17049 states. [2020-10-27 19:05:15,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17049 to 17033. [2020-10-27 19:05:15,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17033 states. [2020-10-27 19:05:15,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17033 states to 17033 states and 20591 transitions. [2020-10-27 19:05:15,954 INFO L78 Accepts]: Start accepts. Automaton has 17033 states and 20591 transitions. Word has length 150 [2020-10-27 19:05:15,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:05:15,955 INFO L481 AbstractCegarLoop]: Abstraction has 17033 states and 20591 transitions. [2020-10-27 19:05:15,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:05:15,955 INFO L276 IsEmpty]: Start isEmpty. Operand 17033 states and 20591 transitions. [2020-10-27 19:05:15,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-27 19:05:15,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:05:15,964 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 19:05:15,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 19:05:15,964 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:05:15,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:05:15,965 INFO L82 PathProgramCache]: Analyzing trace with hash -400607108, now seen corresponding path program 1 times [2020-10-27 19:05:15,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:05:15,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767783302] [2020-10-27 19:05:15,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:05:16,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:16,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:16,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:17,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:17,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 19:05:17,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:05:17,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1105 [2020-10-27 19:05:17,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:17,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:05:17,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-27 19:05:17,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 19:05:17,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:17,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:05:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:17,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:17,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:17,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:05:17,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:17,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:05:17,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:17,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:05:17,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:05:17,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:05:17,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:17,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:05:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:17,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:17,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:17,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-27 19:05:17,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:17,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-27 19:05:17,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:17,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:05:17,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:05:17,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-27 19:05:17,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:17,506 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:05:17,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767783302] [2020-10-27 19:05:17,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:05:17,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:05:17,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054779928] [2020-10-27 19:05:17,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:05:17,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:05:17,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:05:17,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:05:17,509 INFO L87 Difference]: Start difference. First operand 17033 states and 20591 transitions. Second operand 5 states. [2020-10-27 19:05:17,983 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 19:05:30,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:05:30,067 INFO L93 Difference]: Finished difference Result 39760 states and 49159 transitions. [2020-10-27 19:05:30,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:05:30,068 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-10-27 19:05:30,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:05:30,158 INFO L225 Difference]: With dead ends: 39760 [2020-10-27 19:05:30,159 INFO L226 Difference]: Without dead ends: 22733 [2020-10-27 19:05:30,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:05:30,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22733 states. [2020-10-27 19:05:30,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22733 to 22717. [2020-10-27 19:05:30,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22717 states. [2020-10-27 19:05:30,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22717 states to 22717 states and 27323 transitions. [2020-10-27 19:05:30,725 INFO L78 Accepts]: Start accepts. Automaton has 22717 states and 27323 transitions. Word has length 166 [2020-10-27 19:05:30,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:05:30,725 INFO L481 AbstractCegarLoop]: Abstraction has 22717 states and 27323 transitions. [2020-10-27 19:05:30,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:05:30,726 INFO L276 IsEmpty]: Start isEmpty. Operand 22717 states and 27323 transitions. [2020-10-27 19:05:30,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-27 19:05:30,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:05:30,730 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 19:05:30,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 19:05:30,731 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:05:30,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:05:30,731 INFO L82 PathProgramCache]: Analyzing trace with hash 73188920, now seen corresponding path program 1 times [2020-10-27 19:05:30,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:05:30,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364539155] [2020-10-27 19:05:30,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:05:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:30,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:31,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:31,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:31,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 19:05:31,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:05:31,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 950 [2020-10-27 19:05:31,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:31,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:05:31,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-27 19:05:31,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 19:05:31,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:31,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:05:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:31,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:31,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:31,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:05:31,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:31,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:05:31,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:31,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:05:31,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:05:31,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:05:31,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:31,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:05:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:31,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:32,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:32,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 19:05:32,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:32,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-27 19:05:32,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:32,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:05:32,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:05:32,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-27 19:05:32,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:32,092 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:05:32,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364539155] [2020-10-27 19:05:32,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:05:32,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:05:32,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556694051] [2020-10-27 19:05:32,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:05:32,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:05:32,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:05:32,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:05:32,095 INFO L87 Difference]: Start difference. First operand 22717 states and 27323 transitions. Second operand 5 states. [2020-10-27 19:05:44,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:05:44,480 INFO L93 Difference]: Finished difference Result 51112 states and 63456 transitions. [2020-10-27 19:05:44,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:05:44,482 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-27 19:05:44,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:05:44,583 INFO L225 Difference]: With dead ends: 51112 [2020-10-27 19:05:44,583 INFO L226 Difference]: Without dead ends: 28401 [2020-10-27 19:05:44,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:05:44,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28401 states. [2020-10-27 19:05:45,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28401 to 28393. [2020-10-27 19:05:45,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28393 states. [2020-10-27 19:05:45,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28393 states to 28393 states and 33905 transitions. [2020-10-27 19:05:45,302 INFO L78 Accepts]: Start accepts. Automaton has 28393 states and 33905 transitions. Word has length 168 [2020-10-27 19:05:45,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:05:45,303 INFO L481 AbstractCegarLoop]: Abstraction has 28393 states and 33905 transitions. [2020-10-27 19:05:45,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:05:45,303 INFO L276 IsEmpty]: Start isEmpty. Operand 28393 states and 33905 transitions. [2020-10-27 19:05:45,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-27 19:05:45,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:05:45,310 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:05:45,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 19:05:45,311 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:05:45,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:05:45,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1384816418, now seen corresponding path program 1 times [2020-10-27 19:05:45,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:05:45,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727852322] [2020-10-27 19:05:45,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:05:45,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:45,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:45,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:46,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:46,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-27 19:05:46,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:05:46,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1051 [2020-10-27 19:05:46,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:46,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:05:46,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 197 [2020-10-27 19:05:46,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 19:05:46,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:46,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:05:46,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:46,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:46,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:46,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:05:46,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:46,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 19:05:46,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:46,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:05:46,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:05:46,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:05:46,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:46,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:05:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:46,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:46,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:46,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-27 19:05:46,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:46,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-27 19:05:46,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:46,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:05:46,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:05:46,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-27 19:05:46,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:05:47,218 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:05:47,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727852322] [2020-10-27 19:05:47,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:05:47,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:05:47,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715787291] [2020-10-27 19:05:47,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:05:47,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:05:47,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:05:47,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:05:47,228 INFO L87 Difference]: Start difference. First operand 28393 states and 33905 transitions. Second operand 5 states. [2020-10-27 19:06:00,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:06:00,372 INFO L93 Difference]: Finished difference Result 67402 states and 82267 transitions. [2020-10-27 19:06:00,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:06:00,374 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 205 [2020-10-27 19:06:00,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:06:00,503 INFO L225 Difference]: With dead ends: 67402 [2020-10-27 19:06:00,503 INFO L226 Difference]: Without dead ends: 39015 [2020-10-27 19:06:00,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:06:00,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39015 states. [2020-10-27 19:06:01,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39015 to 39007. [2020-10-27 19:06:01,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39007 states. [2020-10-27 19:06:01,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39007 states to 39007 states and 46163 transitions. [2020-10-27 19:06:01,306 INFO L78 Accepts]: Start accepts. Automaton has 39007 states and 46163 transitions. Word has length 205 [2020-10-27 19:06:01,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:06:01,307 INFO L481 AbstractCegarLoop]: Abstraction has 39007 states and 46163 transitions. [2020-10-27 19:06:01,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:06:01,309 INFO L276 IsEmpty]: Start isEmpty. Operand 39007 states and 46163 transitions. [2020-10-27 19:06:01,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-27 19:06:01,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:06:01,324 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 19:06:01,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 19:06:01,325 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:06:01,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:06:01,325 INFO L82 PathProgramCache]: Analyzing trace with hash 904365198, now seen corresponding path program 1 times [2020-10-27 19:06:01,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:06:01,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83644148] [2020-10-27 19:06:01,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:06:01,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:01,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:01,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:03,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:03,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:06,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:06,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-27 19:06:06,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 19:06:06,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 19:06:06,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:06,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:06:06,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 243 [2020-10-27 19:06:06,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 19:06:06,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:06,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:06:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:06,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:06,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:06,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:06:06,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:06,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 19:06:06,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:06,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:06:06,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:06,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:06:06,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:06,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:06:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:06,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:06,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:06,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 19:06:06,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:06,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 19:06:06,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:06,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:06:06,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:06,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:06:06,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:06,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 19:06:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:06,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:06,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:06,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-27 19:06:06,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:06,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-27 19:06:06,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:06,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:06:06,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:06,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-27 19:06:06,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:06,925 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-27 19:06:06,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83644148] [2020-10-27 19:06:06,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:06:06,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:06:06,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717180804] [2020-10-27 19:06:06,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:06:06,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:06:06,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:06:06,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:06:06,928 INFO L87 Difference]: Start difference. First operand 39007 states and 46163 transitions. Second operand 5 states. [2020-10-27 19:06:20,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:06:20,477 INFO L93 Difference]: Finished difference Result 105620 states and 127032 transitions. [2020-10-27 19:06:20,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:06:20,479 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 249 [2020-10-27 19:06:20,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:06:20,718 INFO L225 Difference]: With dead ends: 105620 [2020-10-27 19:06:20,718 INFO L226 Difference]: Without dead ends: 66619 [2020-10-27 19:06:20,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:06:20,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66619 states. [2020-10-27 19:06:22,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66619 to 66611. [2020-10-27 19:06:22,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66611 states. [2020-10-27 19:06:22,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66611 states to 66611 states and 79213 transitions. [2020-10-27 19:06:22,562 INFO L78 Accepts]: Start accepts. Automaton has 66611 states and 79213 transitions. Word has length 249 [2020-10-27 19:06:22,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:06:22,562 INFO L481 AbstractCegarLoop]: Abstraction has 66611 states and 79213 transitions. [2020-10-27 19:06:22,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:06:22,563 INFO L276 IsEmpty]: Start isEmpty. Operand 66611 states and 79213 transitions. [2020-10-27 19:06:22,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2020-10-27 19:06:22,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:06:22,657 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:06:22,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 19:06:22,657 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:06:22,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:06:22,658 INFO L82 PathProgramCache]: Analyzing trace with hash 631812805, now seen corresponding path program 1 times [2020-10-27 19:06:22,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:06:22,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845216731] [2020-10-27 19:06:22,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:06:22,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:23,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:23,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:27,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:28,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:28,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 590 [2020-10-27 19:06:28,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:06:28,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-27 19:06:28,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:28,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:06:28,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 564 [2020-10-27 19:06:28,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 19:06:28,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:28,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:06:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:28,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:28,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:28,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:06:28,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:28,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:06:28,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:28,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:06:28,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:28,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:06:28,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:28,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:06:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:28,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:28,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:28,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 561 [2020-10-27 19:06:28,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:28,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-10-27 19:06:28,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:28,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:06:28,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:28,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 549 [2020-10-27 19:06:28,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:28,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:06:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:29,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:29,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:29,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-27 19:06:29,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:29,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-10-27 19:06:29,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:29,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:06:29,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:29,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 264 [2020-10-27 19:06:29,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:29,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 19:06:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:29,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:29,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:29,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 19:06:29,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:29,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 19:06:29,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:29,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:06:29,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:29,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 19:06:29,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:29,958 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:06:29,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845216731] [2020-10-27 19:06:29,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:06:29,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:06:29,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826988291] [2020-10-27 19:06:29,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:06:29,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:06:29,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:06:29,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:06:29,962 INFO L87 Difference]: Start difference. First operand 66611 states and 79213 transitions. Second operand 5 states. [2020-10-27 19:06:44,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:06:44,031 INFO L93 Difference]: Finished difference Result 145244 states and 175487 transitions. [2020-10-27 19:06:44,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:06:44,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 574 [2020-10-27 19:06:44,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:06:44,321 INFO L225 Difference]: With dead ends: 145244 [2020-10-27 19:06:44,321 INFO L226 Difference]: Without dead ends: 78639 [2020-10-27 19:06:44,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:06:44,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78639 states. [2020-10-27 19:06:46,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78639 to 77929. [2020-10-27 19:06:46,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77929 states. [2020-10-27 19:06:46,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77929 states to 77929 states and 92586 transitions. [2020-10-27 19:06:46,555 INFO L78 Accepts]: Start accepts. Automaton has 77929 states and 92586 transitions. Word has length 574 [2020-10-27 19:06:46,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:06:46,557 INFO L481 AbstractCegarLoop]: Abstraction has 77929 states and 92586 transitions. [2020-10-27 19:06:46,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:06:46,557 INFO L276 IsEmpty]: Start isEmpty. Operand 77929 states and 92586 transitions. [2020-10-27 19:06:46,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2020-10-27 19:06:46,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:06:46,714 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:06:46,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 19:06:46,715 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:06:46,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:06:46,716 INFO L82 PathProgramCache]: Analyzing trace with hash 547776389, now seen corresponding path program 1 times [2020-10-27 19:06:46,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:06:46,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258523335] [2020-10-27 19:06:46,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:06:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:46,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:47,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:49,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:51,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:51,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 778 [2020-10-27 19:06:51,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:06:51,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 19:06:51,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:51,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:06:51,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-27 19:06:51,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 595 [2020-10-27 19:06:51,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:52,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:06:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:52,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:52,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:52,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:06:52,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:52,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 19:06:52,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:52,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:06:52,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:52,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:06:52,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:52,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:06:52,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:52,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:52,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:52,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-27 19:06:52,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:52,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 19:06:52,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:52,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:06:52,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:52,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-27 19:06:52,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:52,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-27 19:06:52,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:52,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:53,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:53,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 599 [2020-10-27 19:06:53,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:53,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-10-27 19:06:53,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:53,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:06:53,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:06:53,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 599 [2020-10-27 19:06:53,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:53,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:06:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:53,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:54,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:54,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-27 19:06:54,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:54,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 467 [2020-10-27 19:06:54,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:54,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 19:06:54,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:06:54,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 311 [2020-10-27 19:06:54,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:54,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 19:06:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:54,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:54,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:54,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 19:06:54,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:54,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-27 19:06:54,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:54,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:06:54,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:06:54,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 19:06:54,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:06:55,450 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 19:06:55,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258523335] [2020-10-27 19:06:55,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:06:55,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 19:06:55,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979829559] [2020-10-27 19:06:55,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 19:06:55,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:06:55,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 19:06:55,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 19:06:55,455 INFO L87 Difference]: Start difference. First operand 77929 states and 92586 transitions. Second operand 8 states. [2020-10-27 19:07:12,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:07:12,828 INFO L93 Difference]: Finished difference Result 156167 states and 186155 transitions. [2020-10-27 19:07:12,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 19:07:12,829 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 760 [2020-10-27 19:07:12,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:07:12,963 INFO L225 Difference]: With dead ends: 156167 [2020-10-27 19:07:12,963 INFO L226 Difference]: Without dead ends: 69744 [2020-10-27 19:07:13,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-27 19:07:13,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69744 states. [2020-10-27 19:07:14,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69744 to 68980. [2020-10-27 19:07:14,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68980 states. [2020-10-27 19:07:14,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68980 states to 68980 states and 77111 transitions. [2020-10-27 19:07:14,875 INFO L78 Accepts]: Start accepts. Automaton has 68980 states and 77111 transitions. Word has length 760 [2020-10-27 19:07:14,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:07:14,876 INFO L481 AbstractCegarLoop]: Abstraction has 68980 states and 77111 transitions. [2020-10-27 19:07:14,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 19:07:14,876 INFO L276 IsEmpty]: Start isEmpty. Operand 68980 states and 77111 transitions. [2020-10-27 19:07:14,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2020-10-27 19:07:14,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:07:14,969 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:07:14,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 19:07:14,969 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:07:14,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:07:14,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1121506641, now seen corresponding path program 1 times [2020-10-27 19:07:14,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:07:14,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276454478] [2020-10-27 19:07:14,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:07:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:15,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:15,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:15,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:20,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:20,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 827 [2020-10-27 19:07:20,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:07:20,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 19:07:20,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:20,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 19:07:20,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 207 [2020-10-27 19:07:20,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 498 [2020-10-27 19:07:20,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:20,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:07:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:20,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:20,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:20,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:07:20,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:20,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:07:20,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:20,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:07:20,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:20,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:07:20,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:20,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:07:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:20,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:20,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:20,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 19:07:20,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:20,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 19:07:20,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:20,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:07:20,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:20,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:07:20,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:20,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 19:07:20,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:20,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:20,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:20,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 19:07:20,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:20,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 19:07:20,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:20,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:07:20,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:20,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 19:07:20,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:20,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-27 19:07:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:20,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:21,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:25,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:25,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:25,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 599 [2020-10-27 19:07:25,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:07:25,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 19:07:25,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:25,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:07:25,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:07:25,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 599 [2020-10-27 19:07:25,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:26,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:07:26,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:26,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:26,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:26,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-27 19:07:26,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:26,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-10-27 19:07:26,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:26,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 19:07:26,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:07:26,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 311 [2020-10-27 19:07:26,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:26,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 19:07:26,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:26,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:26,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:26,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 19:07:26,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:26,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 19:07:26,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:26,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:07:26,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:07:26,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 19:07:26,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:27,639 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 224 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-27 19:07:27,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276454478] [2020-10-27 19:07:27,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:07:27,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 19:07:27,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888297295] [2020-10-27 19:07:27,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 19:07:27,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:07:27,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 19:07:27,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 19:07:27,643 INFO L87 Difference]: Start difference. First operand 68980 states and 77111 transitions. Second operand 8 states.