/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/list-ext3-properties/sll_of_sll_nondet_append-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:59:21,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:59:21,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:59:21,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:59:21,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:59:21,175 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:59:21,177 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:59:21,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:59:21,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:59:21,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:59:21,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:59:21,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:59:21,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:59:21,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:59:21,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:59:21,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:59:21,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:59:21,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:59:21,195 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:59:21,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:59:21,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:59:21,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:59:21,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:59:21,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:59:21,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:59:21,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:59:21,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:59:21,210 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:59:21,210 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:59:21,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:59:21,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:59:21,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:59:21,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:59:21,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:59:21,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:59:21,217 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:59:21,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:59:21,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:59:21,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:59:21,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:59:21,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:59:21,222 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 19:59:21,266 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:59:21,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:59:21,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:59:21,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:59:21,269 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:59:21,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:59:21,269 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:59:21,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:59:21,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:59:21,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:59:21,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:59:21,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:59:21,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:59:21,271 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:59:21,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:59:21,271 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:59:21,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:59:21,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:59:21,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:59:21,272 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:59:21,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:59:21,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:59:21,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:59:21,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:59:21,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:59:21,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:59:21,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:59:21,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:59:21,274 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:59:21,275 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:59:21,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:59:21,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:59:21,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:59:21,692 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:59:21,692 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:59:21,695 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_of_sll_nondet_append-1.i [2020-10-27 19:59:21,781 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fde1fa7a6/ba072d301bc94335865b544c12fe7857/FLAG0126b88d9 [2020-10-27 19:59:22,568 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:59:22,569 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_of_sll_nondet_append-1.i [2020-10-27 19:59:22,593 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fde1fa7a6/ba072d301bc94335865b544c12fe7857/FLAG0126b88d9 [2020-10-27 19:59:22,768 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fde1fa7a6/ba072d301bc94335865b544c12fe7857 [2020-10-27 19:59:22,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:59:22,779 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:59:22,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:59:22,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:59:22,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:59:22,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:59:22" (1/1) ... [2020-10-27 19:59:22,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59ff0ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:59:22, skipping insertion in model container [2020-10-27 19:59:22,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:59:22" (1/1) ... [2020-10-27 19:59:22,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:59:22,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:59:23,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:59:23,237 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:59:23,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:59:23,372 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:59:23,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:59:23 WrapperNode [2020-10-27 19:59:23,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:59:23,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:59:23,374 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:59:23,374 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:59:23,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:59:23" (1/1) ... [2020-10-27 19:59:23,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:59:23" (1/1) ... [2020-10-27 19:59:23,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:59:23" (1/1) ... [2020-10-27 19:59:23,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:59:23" (1/1) ... [2020-10-27 19:59:23,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:59:23" (1/1) ... [2020-10-27 19:59:23,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:59:23" (1/1) ... [2020-10-27 19:59:23,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:59:23" (1/1) ... [2020-10-27 19:59:23,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:59:23,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:59:23,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:59:23,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:59:23,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:59:23" (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 19:59:23,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:59:23,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:59:23,560 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:59:23,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-27 19:59:23,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-27 19:59:23,560 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-27 19:59:23,560 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-27 19:59:23,561 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create_with_sublist [2020-10-27 19:59:23,561 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-10-27 19:59:23,561 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_append [2020-10-27 19:59:23,561 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_hierarchical_destroy [2020-10-27 19:59:23,561 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:59:23,562 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:59:23,562 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:59:23,562 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 19:59:23,562 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 19:59:23,562 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:59:23,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:59:23,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 19:59:23,563 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-27 19:59:23,563 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-27 19:59:23,563 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-27 19:59:23,563 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-27 19:59:23,563 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-27 19:59:23,563 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-27 19:59:23,564 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-27 19:59:23,564 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-27 19:59:23,564 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-27 19:59:23,564 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-27 19:59:23,564 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-27 19:59:23,564 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-27 19:59:23,565 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-27 19:59:23,565 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-27 19:59:23,565 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-27 19:59:23,565 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-27 19:59:23,565 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-27 19:59:23,565 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-27 19:59:23,566 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-27 19:59:23,566 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-27 19:59:23,566 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-27 19:59:23,566 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-27 19:59:23,566 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-27 19:59:23,566 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-27 19:59:23,566 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-27 19:59:23,567 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-27 19:59:23,567 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-27 19:59:23,567 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-27 19:59:23,567 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-27 19:59:23,567 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-27 19:59:23,567 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-27 19:59:23,568 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-27 19:59:23,568 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-27 19:59:23,568 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-27 19:59:23,568 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-27 19:59:23,568 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-27 19:59:23,568 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-27 19:59:23,568 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-27 19:59:23,569 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-27 19:59:23,569 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-27 19:59:23,569 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-27 19:59:23,569 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-27 19:59:23,569 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-27 19:59:23,569 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-27 19:59:23,569 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-27 19:59:23,570 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-27 19:59:23,570 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-27 19:59:23,570 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-27 19:59:23,570 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-27 19:59:23,570 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-27 19:59:23,570 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-27 19:59:23,571 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-27 19:59:23,571 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 19:59:23,571 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 19:59:23,571 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-27 19:59:23,571 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 19:59:23,571 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-27 19:59:23,572 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-27 19:59:23,572 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-27 19:59:23,572 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-27 19:59:23,572 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-27 19:59:23,572 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-27 19:59:23,572 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-27 19:59:23,573 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-27 19:59:23,573 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 19:59:23,573 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-27 19:59:23,573 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-27 19:59:23,573 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-27 19:59:23,573 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-27 19:59:23,573 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-27 19:59:23,574 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-27 19:59:23,574 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-27 19:59:23,574 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-27 19:59:23,574 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-27 19:59:23,574 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-27 19:59:23,574 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-27 19:59:23,574 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-27 19:59:23,575 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-27 19:59:23,575 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-27 19:59:23,575 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-27 19:59:23,575 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-27 19:59:23,575 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-27 19:59:23,575 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-27 19:59:23,575 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-27 19:59:23,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-27 19:59:23,576 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-27 19:59:23,576 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-27 19:59:23,576 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-27 19:59:23,576 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-27 19:59:23,576 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-27 19:59:23,577 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-27 19:59:23,577 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-27 19:59:23,577 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-27 19:59:23,577 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-27 19:59:23,577 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-27 19:59:23,577 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-27 19:59:23,577 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-27 19:59:23,578 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-27 19:59:23,578 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-27 19:59:23,578 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-27 19:59:23,578 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-27 19:59:23,578 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-27 19:59:23,578 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-27 19:59:23,579 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-27 19:59:23,579 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-27 19:59:23,579 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-27 19:59:23,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 19:59:23,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 19:59:23,579 INFO L130 BoogieDeclarations]: Found specification of procedure node_create_with_sublist [2020-10-27 19:59:23,579 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-10-27 19:59:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 19:59:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure sll_append [2020-10-27 19:59:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure sll_hierarchical_destroy [2020-10-27 19:59:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:59:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:59:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-27 19:59:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:59:23,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:59:23,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:59:23,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:59:23,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:59:23,923 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-27 19:59:24,277 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:59:24,278 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-27 19:59:24,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:59:24 BoogieIcfgContainer [2020-10-27 19:59:24,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:59:24,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:59:24,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:59:24,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:59:24,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:59:22" (1/3) ... [2020-10-27 19:59:24,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c1ca56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:59:24, skipping insertion in model container [2020-10-27 19:59:24,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:59:23" (2/3) ... [2020-10-27 19:59:24,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c1ca56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:59:24, skipping insertion in model container [2020-10-27 19:59:24,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:59:24" (3/3) ... [2020-10-27 19:59:24,290 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_of_sll_nondet_append-1.i [2020-10-27 19:59:24,304 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:59:24,310 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:59:24,343 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:59:24,421 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:59:24,421 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:59:24,421 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:59:24,421 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:59:24,422 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:59:24,422 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:59:24,426 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:59:24,426 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:59:24,461 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-10-27 19:59:24,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-27 19:59:24,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:59:24,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:59:24,469 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:59:24,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:59:24,476 INFO L82 PathProgramCache]: Analyzing trace with hash 509728839, now seen corresponding path program 1 times [2020-10-27 19:59:24,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:59:24,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845152201] [2020-10-27 19:59:24,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:59:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:24,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:24,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:24,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:25,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:25,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 19:59:25,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:59:25,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 387 [2020-10-27 19:59:25,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:25,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:59:25,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:59:25,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 19:59:25,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-27 19:59:25,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:59:25,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:25,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:25,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:25,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:59:25,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:25,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 19:59:25,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:25,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:59:25,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:25,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:59:25,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:25,232 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 19:59:25,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845152201] [2020-10-27 19:59:25,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:59:25,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 19:59:25,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181179665] [2020-10-27 19:59:25,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:59:25,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:59:25,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:59:25,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:59:25,268 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 5 states. [2020-10-27 19:59:25,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:59:25,610 INFO L93 Difference]: Finished difference Result 161 states and 239 transitions. [2020-10-27 19:59:25,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 19:59:25,613 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-27 19:59:25,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:59:25,623 INFO L225 Difference]: With dead ends: 161 [2020-10-27 19:59:25,624 INFO L226 Difference]: Without dead ends: 64 [2020-10-27 19:59:25,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:59:25,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-27 19:59:25,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2020-10-27 19:59:25,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-27 19:59:25,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2020-10-27 19:59:25,683 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 13 [2020-10-27 19:59:25,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:59:25,683 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2020-10-27 19:59:25,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:59:25,684 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2020-10-27 19:59:25,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 19:59:25,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:59:25,686 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:59:25,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:59:25,686 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:59:25,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:59:25,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1450486145, now seen corresponding path program 1 times [2020-10-27 19:59:25,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:59:25,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285846922] [2020-10-27 19:59:25,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:59:25,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:25,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:25,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:25,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:27,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:27,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 19:59:27,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:59:27,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1514 [2020-10-27 19:59:27,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:27,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:59:27,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:59:27,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 19:59:27,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:27,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:59:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:27,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:27,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:27,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:59:27,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:27,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 19:59:27,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:27,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:59:27,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:27,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:59:27,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 19:59:27,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 19:59:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:27,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:27,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:27,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:27,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 19:59:27,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:59:27,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-27 19:59:27,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:27,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:59:27,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 19:59:27,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 19:59:27,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 19:59:27,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:59:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:27,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:27,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:27,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 19:59:27,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:27,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 19:59:27,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:27,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 19:59:27,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:27,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 19:59:27,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:27,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 19:59:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:27,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:27,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:27,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 19:59:27,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:27,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 19:59:27,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:27,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:59:27,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:27,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 19:59:27,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:27,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 19:59:27,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285846922] [2020-10-27 19:59:27,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:59:27,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 19:59:27,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431440849] [2020-10-27 19:59:27,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 19:59:27,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:59:27,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 19:59:27,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-27 19:59:27,901 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand 12 states. [2020-10-27 19:59:28,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:59:28,523 INFO L93 Difference]: Finished difference Result 147 states and 185 transitions. [2020-10-27 19:59:28,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 19:59:28,524 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-10-27 19:59:28,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:59:28,526 INFO L225 Difference]: With dead ends: 147 [2020-10-27 19:59:28,526 INFO L226 Difference]: Without dead ends: 99 [2020-10-27 19:59:28,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-10-27 19:59:28,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-27 19:59:28,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 84. [2020-10-27 19:59:28,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-27 19:59:28,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 104 transitions. [2020-10-27 19:59:28,564 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 104 transitions. Word has length 40 [2020-10-27 19:59:28,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:59:28,567 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 104 transitions. [2020-10-27 19:59:28,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 19:59:28,567 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 104 transitions. [2020-10-27 19:59:28,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-27 19:59:28,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:59:28,572 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:59:28,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:59:28,572 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:59:28,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:59:28,573 INFO L82 PathProgramCache]: Analyzing trace with hash 99019871, now seen corresponding path program 2 times [2020-10-27 19:59:28,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:59:28,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117138768] [2020-10-27 19:59:28,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:59:28,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:28,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:28,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:28,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:29,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:30,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:30,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 19:59:30,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 19:59:30,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1912 [2020-10-27 19:59:30,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:30,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 19:59:30,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:59:30,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 19:59:30,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:30,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:59:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:30,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:30,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:30,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:59:30,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:30,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 19:59:30,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:30,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:59:30,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:30,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:59:30,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:30,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 19:59:30,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:30,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:30,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:30,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 19:59:30,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:30,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 19:59:30,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:30,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:59:30,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 19:59:30,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 19:59:30,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:30,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:59:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:30,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:30,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:30,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 19:59:30,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:30,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 19:59:30,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:30,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 19:59:30,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:30,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 19:59:30,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:30,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 19:59:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:30,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:30,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:30,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 19:59:30,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:30,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 19:59:30,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:30,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:59:30,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:30,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 19:59:30,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:30,950 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:59:30,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117138768] [2020-10-27 19:59:30,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:59:30,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 19:59:30,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637773005] [2020-10-27 19:59:30,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 19:59:30,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:59:30,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 19:59:30,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-27 19:59:30,956 INFO L87 Difference]: Start difference. First operand 84 states and 104 transitions. Second operand 12 states. [2020-10-27 19:59:31,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:59:31,622 INFO L93 Difference]: Finished difference Result 159 states and 197 transitions. [2020-10-27 19:59:31,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 19:59:31,622 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-10-27 19:59:31,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:59:31,625 INFO L225 Difference]: With dead ends: 159 [2020-10-27 19:59:31,625 INFO L226 Difference]: Without dead ends: 84 [2020-10-27 19:59:31,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2020-10-27 19:59:31,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-27 19:59:31,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2020-10-27 19:59:31,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-27 19:59:31,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 101 transitions. [2020-10-27 19:59:31,648 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 101 transitions. Word has length 45 [2020-10-27 19:59:31,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:59:31,648 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 101 transitions. [2020-10-27 19:59:31,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 19:59:31,649 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 101 transitions. [2020-10-27 19:59:31,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 19:59:31,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:59:31,653 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:59:31,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:59:31,654 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:59:31,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:59:31,654 INFO L82 PathProgramCache]: Analyzing trace with hash 311779596, now seen corresponding path program 1 times [2020-10-27 19:59:31,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:59:31,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338556878] [2020-10-27 19:59:31,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:59:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:31,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:31,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:31,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:32,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:33,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:33,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 19:59:33,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 19:59:33,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1969 [2020-10-27 19:59:33,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:33,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 19:59:33,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:59:33,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 19:59:33,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:33,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:59:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:33,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:33,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:33,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:59:33,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:33,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:59:33,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:33,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:59:33,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:33,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:59:33,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:33,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 19:59:33,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:33,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:33,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:33,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 19:59:33,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:33,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-27 19:59:33,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:33,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 19:59:33,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 19:59:33,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 19:59:33,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:33,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:59:33,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:33,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:34,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:34,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 19:59:34,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:34,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-27 19:59:34,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:34,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:59:34,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:34,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 19:59:34,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:34,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 19:59:34,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:34,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:34,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:34,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 19:59:34,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:34,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 19:59:34,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:34,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:59:34,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:34,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 19:59:34,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:34,179 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:59:34,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338556878] [2020-10-27 19:59:34,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:59:34,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 19:59:34,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448114700] [2020-10-27 19:59:34,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 19:59:34,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:59:34,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 19:59:34,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-27 19:59:34,183 INFO L87 Difference]: Start difference. First operand 80 states and 101 transitions. Second operand 13 states. [2020-10-27 19:59:34,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:59:34,825 INFO L93 Difference]: Finished difference Result 165 states and 207 transitions. [2020-10-27 19:59:34,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 19:59:34,826 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-10-27 19:59:34,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:59:34,827 INFO L225 Difference]: With dead ends: 165 [2020-10-27 19:59:34,827 INFO L226 Difference]: Without dead ends: 87 [2020-10-27 19:59:34,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-10-27 19:59:34,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-27 19:59:34,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2020-10-27 19:59:34,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-27 19:59:34,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 104 transitions. [2020-10-27 19:59:34,840 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 104 transitions. Word has length 48 [2020-10-27 19:59:34,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:59:34,840 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 104 transitions. [2020-10-27 19:59:34,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 19:59:34,840 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 104 transitions. [2020-10-27 19:59:34,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-27 19:59:34,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:59:34,842 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:59:34,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 19:59:34,842 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:59:34,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:59:34,843 INFO L82 PathProgramCache]: Analyzing trace with hash -734981825, now seen corresponding path program 2 times [2020-10-27 19:59:34,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:59:34,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250623976] [2020-10-27 19:59:34,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:59:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:34,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:34,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:34,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:35,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:37,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:37,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 19:59:37,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 19:59:37,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2516 [2020-10-27 19:59:37,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:37,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:59:37,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:59:37,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 19:59:37,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:59:37,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:59:37,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:37,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:37,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:37,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:59:37,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:37,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 19:59:37,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:37,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:59:37,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:37,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:59:37,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:37,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 19:59:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:37,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:37,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:37,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 19:59:37,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:37,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 19:59:37,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:37,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:59:37,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:37,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 19:59:37,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:37,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:59:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:37,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:37,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:37,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 19:59:37,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:37,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 19:59:37,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:37,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:59:37,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:37,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:59:37,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:37,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 19:59:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:37,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:37,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:37,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 19:59:37,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:37,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:59:37,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:37,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:59:37,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:37,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:59:37,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:37,629 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 19:59:37,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250623976] [2020-10-27 19:59:37,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:59:37,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 19:59:37,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880861334] [2020-10-27 19:59:37,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:59:37,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:59:37,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:59:37,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:59:37,632 INFO L87 Difference]: Start difference. First operand 83 states and 104 transitions. Second operand 6 states. [2020-10-27 19:59:37,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:59:37,903 INFO L93 Difference]: Finished difference Result 98 states and 123 transitions. [2020-10-27 19:59:37,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:59:37,904 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-10-27 19:59:37,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:59:37,907 INFO L225 Difference]: With dead ends: 98 [2020-10-27 19:59:37,908 INFO L226 Difference]: Without dead ends: 94 [2020-10-27 19:59:37,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 19:59:37,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-27 19:59:37,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2020-10-27 19:59:37,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-27 19:59:37,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 106 transitions. [2020-10-27 19:59:37,930 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 106 transitions. Word has length 51 [2020-10-27 19:59:37,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:59:37,934 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 106 transitions. [2020-10-27 19:59:37,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:59:37,935 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 106 transitions. [2020-10-27 19:59:37,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 19:59:37,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:59:37,938 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:59:37,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 19:59:37,938 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:59:37,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:59:37,939 INFO L82 PathProgramCache]: Analyzing trace with hash 608334314, now seen corresponding path program 1 times [2020-10-27 19:59:37,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:59:37,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444635575] [2020-10-27 19:59:37,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:59:37,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:37,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:38,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:38,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:38,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:38,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:39,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:42,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:42,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 19:59:42,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 19:59:42,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 19:59:42,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:42,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 19:59:42,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 19:59:42,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 19:59:42,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:43,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:59:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:43,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:43,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:43,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:59:43,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:43,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 19:59:43,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:43,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:59:43,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:43,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:59:43,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:59:43,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 19:59:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:43,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:43,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:43,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:43,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 19:59:43,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:59:43,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 498 [2020-10-27 19:59:43,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:43,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 19:59:43,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:43,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 19:59:43,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:44,085 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2020-10-27 19:59:44,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:59:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:44,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:44,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:44,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:44,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 19:59:44,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:59:44,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-27 19:59:44,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:44,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:59:44,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:44,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 19:59:44,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:44,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 19:59:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:44,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:44,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:44,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:44,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 19:59:44,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:59:44,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 19:59:44,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:44,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:59:44,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:44,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 19:59:44,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:44,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 19:59:44,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:44,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:44,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:44,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 19:59:44,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:44,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 19:59:44,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:44,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:59:44,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 19:59:44,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 19:59:44,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:59:44,694 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 19:59:44,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444635575] [2020-10-27 19:59:44,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:59:44,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-27 19:59:44,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2554576] [2020-10-27 19:59:44,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 19:59:44,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:59:44,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 19:59:44,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-27 19:59:44,700 INFO L87 Difference]: Start difference. First operand 85 states and 106 transitions. Second operand 18 states. [2020-10-27 19:59:46,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:59:46,013 INFO L93 Difference]: Finished difference Result 175 states and 239 transitions. [2020-10-27 19:59:46,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 19:59:46,019 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 62 [2020-10-27 19:59:46,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:59:46,021 INFO L225 Difference]: With dead ends: 175 [2020-10-27 19:59:46,021 INFO L226 Difference]: Without dead ends: 148 [2020-10-27 19:59:46,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=99, Invalid=713, Unknown=0, NotChecked=0, Total=812 [2020-10-27 19:59:46,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-27 19:59:46,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 124. [2020-10-27 19:59:46,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-27 19:59:46,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 162 transitions. [2020-10-27 19:59:46,044 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 162 transitions. Word has length 62 [2020-10-27 19:59:46,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:59:46,045 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 162 transitions. [2020-10-27 19:59:46,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 19:59:46,045 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 162 transitions. [2020-10-27 19:59:46,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-27 19:59:46,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:59:46,047 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:59:46,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 19:59:46,047 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:59:46,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:59:46,048 INFO L82 PathProgramCache]: Analyzing trace with hash 2104157505, now seen corresponding path program 1 times [2020-10-27 19:59:46,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:59:46,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205996738] [2020-10-27 19:59:46,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:59:46,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:46,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:46,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:46,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:46,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:47,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:51,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:51,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 19:59:51,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 19:59:51,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 19:59:51,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:51,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 19:59:51,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 19:59:51,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 19:59:51,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:51,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:59:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:51,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:51,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:51,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:59:51,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:51,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 19:59:51,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:51,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:59:51,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:51,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:59:51,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:51,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 19:59:51,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:51,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:51,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:51,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 19:59:51,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:51,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-27 19:59:51,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:51,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 19:59:51,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:51,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 19:59:51,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:51,913 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-10-27 19:59:52,065 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 34 [2020-10-27 19:59:52,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:59:52,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:52,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:52,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:52,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 19:59:52,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:52,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-27 19:59:52,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:52,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 19:59:52,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:52,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 19:59:52,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:52,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 19:59:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:52,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:52,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:52,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 19:59:52,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:52,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 19:59:52,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:52,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 19:59:52,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:59:52,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 19:59:52,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:52,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 19:59:52,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:52,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:52,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:52,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 19:59:52,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:52,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 19:59:52,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:52,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:59:52,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 19:59:52,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 19:59:52,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:53,036 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 19:59:53,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205996738] [2020-10-27 19:59:53,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:59:53,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 19:59:53,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428029856] [2020-10-27 19:59:53,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 19:59:53,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:59:53,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 19:59:53,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2020-10-27 19:59:53,040 INFO L87 Difference]: Start difference. First operand 124 states and 162 transitions. Second operand 23 states. [2020-10-27 19:59:55,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:59:55,204 INFO L93 Difference]: Finished difference Result 252 states and 354 transitions. [2020-10-27 19:59:55,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 19:59:55,210 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 63 [2020-10-27 19:59:55,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:59:55,212 INFO L225 Difference]: With dead ends: 252 [2020-10-27 19:59:55,212 INFO L226 Difference]: Without dead ends: 203 [2020-10-27 19:59:55,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=128, Invalid=1132, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 19:59:55,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-27 19:59:55,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 174. [2020-10-27 19:59:55,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-27 19:59:55,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 233 transitions. [2020-10-27 19:59:55,245 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 233 transitions. Word has length 63 [2020-10-27 19:59:55,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:59:55,245 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 233 transitions. [2020-10-27 19:59:55,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 19:59:55,246 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 233 transitions. [2020-10-27 19:59:55,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 19:59:55,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:59:55,248 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:59:55,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 19:59:55,248 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:59:55,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:59:55,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1230036170, now seen corresponding path program 2 times [2020-10-27 19:59:55,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:59:55,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220928230] [2020-10-27 19:59:55,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:59:55,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:55,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:55,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:55,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:56,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:56,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 19:59:56,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:59:56,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1551 [2020-10-27 19:59:56,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:56,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 19:59:56,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:59:56,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 19:59:56,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:56,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:59:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:56,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:56,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:56,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:59:56,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:56,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 19:59:56,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:56,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:59:56,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:56,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:59:56,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:56,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 19:59:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:56,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:57,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:57,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 19:59:57,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:57,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-27 19:59:57,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:57,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 19:59:57,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:57,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 19:59:57,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:57,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:59:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:57,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:57,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:57,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 19:59:57,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:57,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-27 19:59:57,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:57,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 19:59:57,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:57,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 19:59:57,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:57,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 19:59:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:57,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:57,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:57,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 19:59:57,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:57,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 19:59:57,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:57,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 19:59:57,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:57,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 19:59:57,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:57,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 19:59:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:57,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:57,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:57,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 19:59:57,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:57,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:59:57,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:57,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:59:57,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 19:59:57,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:59:57,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:57,415 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 19:59:57,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220928230] [2020-10-27 19:59:57,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:59:57,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 19:59:57,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148483916] [2020-10-27 19:59:57,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 19:59:57,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:59:57,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 19:59:57,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-27 19:59:57,418 INFO L87 Difference]: Start difference. First operand 174 states and 233 transitions. Second operand 15 states. [2020-10-27 19:59:58,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:59:58,105 INFO L93 Difference]: Finished difference Result 308 states and 432 transitions. [2020-10-27 19:59:58,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 19:59:58,106 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 64 [2020-10-27 19:59:58,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:59:58,109 INFO L225 Difference]: With dead ends: 308 [2020-10-27 19:59:58,110 INFO L226 Difference]: Without dead ends: 228 [2020-10-27 19:59:58,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2020-10-27 19:59:58,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-27 19:59:58,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 178. [2020-10-27 19:59:58,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-27 19:59:58,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 239 transitions. [2020-10-27 19:59:58,150 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 239 transitions. Word has length 64 [2020-10-27 19:59:58,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:59:58,151 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 239 transitions. [2020-10-27 19:59:58,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 19:59:58,151 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 239 transitions. [2020-10-27 19:59:58,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 19:59:58,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:59:58,153 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-10-27 19:59:58,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 19:59:58,153 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:59:58,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:59:58,156 INFO L82 PathProgramCache]: Analyzing trace with hash 721971374, now seen corresponding path program 3 times [2020-10-27 19:59:58,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:59:58,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233972726] [2020-10-27 19:59:58,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:59:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:58,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:58,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:58,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:59,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:03,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:03,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 20:00:03,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 20:00:03,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 20:00:03,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:03,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 20:00:03,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 20:00:03,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 20:00:03,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:03,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:00:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:03,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:03,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:03,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:00:03,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:03,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:00:03,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:03,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:03,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:03,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:03,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:03,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 20:00:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:03,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:03,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:03,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 20:00:03,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:03,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-27 20:00:03,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:03,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 20:00:03,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:03,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 20:00:03,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:03,943 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 40 [2020-10-27 20:00:04,088 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 34 [2020-10-27 20:00:04,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 20:00:04,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:04,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:04,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:04,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 20:00:04,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:04,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-27 20:00:04,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:04,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 20:00:04,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:04,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 20:00:04,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:04,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 20:00:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:04,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:04,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:04,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 20:00:04,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:04,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 20:00:04,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:04,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 20:00:04,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:00:04,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 20:00:04,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:04,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 20:00:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:04,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:04,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:04,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 20:00:04,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:04,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:00:04,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:04,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:00:04,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 20:00:04,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 20:00:04,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:05,129 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 20:00:05,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233972726] [2020-10-27 20:00:05,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:00:05,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 20:00:05,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42664438] [2020-10-27 20:00:05,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 20:00:05,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:00:05,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 20:00:05,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2020-10-27 20:00:05,132 INFO L87 Difference]: Start difference. First operand 178 states and 239 transitions. Second operand 24 states. [2020-10-27 20:00:08,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:00:08,115 INFO L93 Difference]: Finished difference Result 311 states and 452 transitions. [2020-10-27 20:00:08,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 20:00:08,116 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 66 [2020-10-27 20:00:08,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:00:08,119 INFO L225 Difference]: With dead ends: 311 [2020-10-27 20:00:08,119 INFO L226 Difference]: Without dead ends: 258 [2020-10-27 20:00:08,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=186, Invalid=1794, Unknown=0, NotChecked=0, Total=1980 [2020-10-27 20:00:08,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-10-27 20:00:08,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 192. [2020-10-27 20:00:08,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-27 20:00:08,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 256 transitions. [2020-10-27 20:00:08,148 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 256 transitions. Word has length 66 [2020-10-27 20:00:08,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:00:08,148 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 256 transitions. [2020-10-27 20:00:08,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 20:00:08,149 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 256 transitions. [2020-10-27 20:00:08,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 20:00:08,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:00:08,150 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:00:08,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 20:00:08,151 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:00:08,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:00:08,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1331939069, now seen corresponding path program 4 times [2020-10-27 20:00:08,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:00:08,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761361997] [2020-10-27 20:00:08,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:00:08,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:08,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:08,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:08,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:08,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:10,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:13,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:13,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 20:00:13,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:00:13,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 20:00:13,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:13,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 20:00:13,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 20:00:13,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 20:00:13,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:13,834 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 46 [2020-10-27 20:00:14,166 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 40 [2020-10-27 20:00:14,401 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-10-27 20:00:14,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:00:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:14,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:14,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:14,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:00:14,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:14,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:00:14,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:14,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:14,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:14,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:14,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:14,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 20:00:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:14,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:14,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:14,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 20:00:14,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:14,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-10-27 20:00:14,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:14,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 20:00:14,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:14,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 20:00:14,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:17,253 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 217 DAG size of output: 114 [2020-10-27 20:00:19,251 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 309 DAG size of output: 98 [2020-10-27 20:00:19,685 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 45 [2020-10-27 20:00:19,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 20:00:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:19,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:20,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:20,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 20:00:20,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:20,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-10-27 20:00:20,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:20,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 20:00:20,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:20,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 20:00:20,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:20,415 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2020-10-27 20:00:20,620 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2020-10-27 20:00:20,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 20:00:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:20,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:20,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:20,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 20:00:20,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:20,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-27 20:00:20,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:20,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 20:00:20,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:00:20,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 20:00:20,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:21,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 20:00:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:21,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:21,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:21,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 20:00:21,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:21,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 20:00:21,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:21,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:00:21,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 20:00:21,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 20:00:21,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:21,700 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 20:00:21,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761361997] [2020-10-27 20:00:21,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:00:21,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 20:00:21,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311159584] [2020-10-27 20:00:21,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 20:00:21,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:00:21,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 20:00:21,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=548, Unknown=0, NotChecked=0, Total=600 [2020-10-27 20:00:21,703 INFO L87 Difference]: Start difference. First operand 192 states and 256 transitions. Second operand 25 states. [2020-10-27 20:00:23,377 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 126 [2020-10-27 20:00:23,731 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-27 20:00:24,181 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-27 20:00:24,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:00:24,995 INFO L93 Difference]: Finished difference Result 308 states and 441 transitions. [2020-10-27 20:00:24,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 20:00:24,996 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 67 [2020-10-27 20:00:24,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:00:25,000 INFO L225 Difference]: With dead ends: 308 [2020-10-27 20:00:25,000 INFO L226 Difference]: Without dead ends: 255 [2020-10-27 20:00:25,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=121, Invalid=1211, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 20:00:25,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-27 20:00:25,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 228. [2020-10-27 20:00:25,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-10-27 20:00:25,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 312 transitions. [2020-10-27 20:00:25,049 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 312 transitions. Word has length 67 [2020-10-27 20:00:25,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:00:25,049 INFO L481 AbstractCegarLoop]: Abstraction has 228 states and 312 transitions. [2020-10-27 20:00:25,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 20:00:25,049 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 312 transitions. [2020-10-27 20:00:25,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 20:00:25,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:00:25,055 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:00:25,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 20:00:25,055 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:00:25,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:00:25,056 INFO L82 PathProgramCache]: Analyzing trace with hash -526306645, now seen corresponding path program 1 times [2020-10-27 20:00:25,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:00:25,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782067904] [2020-10-27 20:00:25,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:00:25,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:25,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:25,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:25,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:25,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:25,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:25,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:26,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:26,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:26,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:27,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:27,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:28,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:28,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:28,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:28,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:29,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:30,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:30,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 20:00:30,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 20:00:30,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 20:00:30,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:30,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 20:00:30,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:00:30,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 20:00:30,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:30,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:00:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:30,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:30,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:30,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:00:30,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:30,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:00:30,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:30,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:30,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:30,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:30,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:30,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 20:00:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:30,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:30,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:30,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:30,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:30,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:31,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:31,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:31,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:32,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:32,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:33,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:33,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 20:00:33,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 20:00:33,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2773 [2020-10-27 20:00:33,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:33,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 20:00:33,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:00:33,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 20:00:33,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:33,401 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 44 [2020-10-27 20:00:33,604 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2020-10-27 20:00:33,834 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 35 [2020-10-27 20:00:33,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 20:00:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:33,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:34,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:34,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:34,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:34,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:34,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 20:00:34,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 20:00:34,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-10-27 20:00:34,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:34,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 20:00:34,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:00:34,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 20:00:34,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:41,246 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 20:01:19,143 WARN L193 SmtUtils]: Spent 36.85 s on a formula simplification. DAG size of input: 426 DAG size of output: 249 [2020-10-27 20:01:19,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 20:01:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:01:19,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:01:19,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:01:19,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 20:01:19,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:01:19,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 530 [2020-10-27 20:01:19,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:01:19,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 20:01:19,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:01:19,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 20:01:19,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:02:25,604 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 32 [2020-10-27 20:02:26,579 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 44 [2020-10-27 20:02:34,858 WARN L193 SmtUtils]: Spent 6.87 s on a formula simplification. DAG size of input: 362 DAG size of output: 78 [2020-10-27 20:02:50,454 WARN L193 SmtUtils]: Spent 12.69 s on a formula simplification. DAG size of input: 445 DAG size of output: 86