/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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-simple/dll2n_prepend_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:48:00,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:48:00,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:48:00,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:48:00,186 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:48:00,195 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:48:00,197 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:48:00,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:48:00,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:48:00,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:48:00,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:48:00,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:48:00,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:48:00,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:48:00,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:48:00,226 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:48:00,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:48:00,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:48:00,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:48:00,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:48:00,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:48:00,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:48:00,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:48:00,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:48:00,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:48:00,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:48:00,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:48:00,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:48:00,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:48:00,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:48:00,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:48:00,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:48:00,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:48:00,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:48:00,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:48:00,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:48:00,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:48:00,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:48:00,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:48:00,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:48:00,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:48:00,277 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 [2020-10-28 14:48:00,330 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:48:00,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:48:00,334 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:48:00,335 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:48:00,335 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:48:00,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:48:00,335 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:48:00,335 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:48:00,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:48:00,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:48:00,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:48:00,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:48:00,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:48:00,338 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:48:00,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:48:00,338 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:48:00,338 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:48:00,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:48:00,339 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:48:00,339 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:48:00,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:48:00,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:48:00,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:48:00,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:48:00,340 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:48:00,340 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:48:00,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:48:00,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:48:00,341 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:48:00,341 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:48:00,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:48:00,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:48:00,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:48:00,842 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:48:00,843 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:48:00,844 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_prepend_unequal.i [2020-10-28 14:48:00,935 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60072762d/9d7effca80ea4373ab6be7cca48a1123/FLAGd94dbba11 [2020-10-28 14:48:01,781 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:48:01,782 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2n_prepend_unequal.i [2020-10-28 14:48:01,806 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60072762d/9d7effca80ea4373ab6be7cca48a1123/FLAGd94dbba11 [2020-10-28 14:48:02,012 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60072762d/9d7effca80ea4373ab6be7cca48a1123 [2020-10-28 14:48:02,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:48:02,022 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:48:02,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:48:02,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:48:02,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:48:02,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:48:02" (1/1) ... [2020-10-28 14:48:02,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48a15049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:48:02, skipping insertion in model container [2020-10-28 14:48:02,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:48:02" (1/1) ... [2020-10-28 14:48:02,042 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:48:02,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:48:02,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:48:02,447 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:48:02,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:48:02,563 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:48:02,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:48:02 WrapperNode [2020-10-28 14:48:02,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:48:02,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:48:02,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:48:02,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:48:02,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:48:02" (1/1) ... [2020-10-28 14:48:02,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:48:02" (1/1) ... [2020-10-28 14:48:02,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:48:02" (1/1) ... [2020-10-28 14:48:02,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:48:02" (1/1) ... [2020-10-28 14:48:02,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:48:02" (1/1) ... [2020-10-28 14:48:02,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:48:02" (1/1) ... [2020-10-28 14:48:02,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:48:02" (1/1) ... [2020-10-28 14:48:02,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:48:02,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:48:02,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:48:02,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:48:02,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:48:02" (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 [2020-10-28 14:48:02,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:48:02,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:48:02,717 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:48:02,717 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-28 14:48:02,717 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-28 14:48:02,718 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-28 14:48:02,718 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-28 14:48:02,718 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-10-28 14:48:02,718 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2020-10-28 14:48:02,718 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_prepend [2020-10-28 14:48:02,718 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:48:02,719 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:48:02,719 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:48:02,719 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 14:48:02,719 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 14:48:02,719 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:48:02,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:48:02,720 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-28 14:48:02,720 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-28 14:48:02,720 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-28 14:48:02,720 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-28 14:48:02,720 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-28 14:48:02,720 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-28 14:48:02,721 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-28 14:48:02,721 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-28 14:48:02,721 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-28 14:48:02,721 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-28 14:48:02,721 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-28 14:48:02,721 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-28 14:48:02,721 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-28 14:48:02,722 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-28 14:48:02,722 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-28 14:48:02,722 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-28 14:48:02,722 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-28 14:48:02,722 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-28 14:48:02,722 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-28 14:48:02,722 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-28 14:48:02,723 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-28 14:48:02,723 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-28 14:48:02,723 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-28 14:48:02,723 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-28 14:48:02,723 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-28 14:48:02,723 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-28 14:48:02,723 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-28 14:48:02,723 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-28 14:48:02,724 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-28 14:48:02,724 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-28 14:48:02,724 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-28 14:48:02,724 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-28 14:48:02,724 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-28 14:48:02,724 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-28 14:48:02,724 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-28 14:48:02,725 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-28 14:48:02,725 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-28 14:48:02,725 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-28 14:48:02,725 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-28 14:48:02,725 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-28 14:48:02,725 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-28 14:48:02,726 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-28 14:48:02,726 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-28 14:48:02,726 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-28 14:48:02,726 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-28 14:48:02,726 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-28 14:48:02,726 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-28 14:48:02,726 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-28 14:48:02,727 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-28 14:48:02,727 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-28 14:48:02,727 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-28 14:48:02,727 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-28 14:48:02,727 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 14:48:02,727 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 14:48:02,727 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-28 14:48:02,728 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 14:48:02,728 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-28 14:48:02,728 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-28 14:48:02,728 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-28 14:48:02,728 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-28 14:48:02,728 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-28 14:48:02,729 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-28 14:48:02,729 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-28 14:48:02,729 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-28 14:48:02,729 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:48:02,729 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-28 14:48:02,729 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-28 14:48:02,730 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-28 14:48:02,730 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-28 14:48:02,730 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-28 14:48:02,730 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-28 14:48:02,730 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-28 14:48:02,730 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-28 14:48:02,730 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-28 14:48:02,731 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-28 14:48:02,731 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-28 14:48:02,731 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-28 14:48:02,731 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-28 14:48:02,731 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-28 14:48:02,731 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-28 14:48:02,731 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-28 14:48:02,732 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-28 14:48:02,732 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-28 14:48:02,732 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-28 14:48:02,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-28 14:48:02,732 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-28 14:48:02,732 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-28 14:48:02,732 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-28 14:48:02,732 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-28 14:48:02,733 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-28 14:48:02,733 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-28 14:48:02,733 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-28 14:48:02,733 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-28 14:48:02,733 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-28 14:48:02,733 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-28 14:48:02,733 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-28 14:48:02,734 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-28 14:48:02,734 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-28 14:48:02,734 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-28 14:48:02,734 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-28 14:48:02,734 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-28 14:48:02,734 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-28 14:48:02,734 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-28 14:48:02,735 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-28 14:48:02,735 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-28 14:48:02,735 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-28 14:48:02,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 14:48:02,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 14:48:02,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:48:02,735 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-10-28 14:48:02,736 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2020-10-28 14:48:02,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 14:48:02,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:48:02,736 INFO L130 BoogieDeclarations]: Found specification of procedure dll_prepend [2020-10-28 14:48:02,736 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:48:02,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-28 14:48:02,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:48:02,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:48:02,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:48:02,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:48:03,219 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-28 14:48:03,391 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:48:03,391 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 14:48:03,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:48:03 BoogieIcfgContainer [2020-10-28 14:48:03,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:48:03,395 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:48:03,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:48:03,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:48:03,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:48:02" (1/3) ... [2020-10-28 14:48:03,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d5c7da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:48:03, skipping insertion in model container [2020-10-28 14:48:03,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:48:02" (2/3) ... [2020-10-28 14:48:03,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d5c7da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:48:03, skipping insertion in model container [2020-10-28 14:48:03,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:48:03" (3/3) ... [2020-10-28 14:48:03,404 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2n_prepend_unequal.i [2020-10-28 14:48:03,417 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:48:03,422 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:48:03,436 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:48:03,465 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:48:03,465 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:48:03,465 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:48:03,465 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:48:03,466 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:48:03,466 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:48:03,466 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:48:03,466 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:48:03,485 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-10-28 14:48:03,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-28 14:48:03,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:48:03,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:48:03,494 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:48:03,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:48:03,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1334267010, now seen corresponding path program 1 times [2020-10-28 14:48:03,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:48:03,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800090813] [2020-10-28 14:48:03,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:48:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:03,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:04,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:05,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:05,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 14:48:05,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:48:05,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2037 [2020-10-28 14:48:05,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:05,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:05,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:48:05,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:48:05,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:48:05,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:48:05,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:48:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:05,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:05,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:05,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:48:05,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:05,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:48:05,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:05,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:05,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:05,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:05,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:05,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:05,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:48:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:05,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:05,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:05,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:48:05,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:05,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 14:48:05,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:05,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:05,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:48:05,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:48:05,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:48:05,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:48:06,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 14:48:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:06,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:06,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:06,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:48:06,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:06,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 14:48:06,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:06,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:06,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:06,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 14:48:06,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:06,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:06,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:48:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:06,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:06,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:06,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:48:06,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:06,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:48:06,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:06,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:06,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:06,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:06,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:06,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:06,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:48:06,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800090813] [2020-10-28 14:48:06,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:48:06,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 14:48:06,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639393878] [2020-10-28 14:48:06,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:48:06,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:48:06,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:48:06,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:48:06,159 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 7 states. [2020-10-28 14:48:06,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:48:06,530 INFO L93 Difference]: Finished difference Result 107 states and 137 transitions. [2020-10-28 14:48:06,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 14:48:06,532 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2020-10-28 14:48:06,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:48:06,541 INFO L225 Difference]: With dead ends: 107 [2020-10-28 14:48:06,541 INFO L226 Difference]: Without dead ends: 44 [2020-10-28 14:48:06,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:48:06,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-28 14:48:06,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-10-28 14:48:06,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-28 14:48:06,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-10-28 14:48:06,594 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 31 [2020-10-28 14:48:06,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:48:06,595 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-10-28 14:48:06,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:48:06,595 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-10-28 14:48:06,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-28 14:48:06,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:48:06,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:48:06,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:48:06,598 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:48:06,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:48:06,598 INFO L82 PathProgramCache]: Analyzing trace with hash -343974174, now seen corresponding path program 1 times [2020-10-28 14:48:06,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:48:06,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839352844] [2020-10-28 14:48:06,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:48:06,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:06,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:06,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:07,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:10,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:10,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 14:48:10,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:48:10,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3458 [2020-10-28 14:48:10,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:10,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:10,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:48:10,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 14:48:10,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:48:10,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:10,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:48:10,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:10,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:10,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:10,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:48:10,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:10,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:48:10,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:10,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:10,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:10,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:10,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:10,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:10,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:48:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:10,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:10,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:10,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:48:10,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:10,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 14:48:10,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:10,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:10,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:48:10,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:48:10,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:48:10,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:10,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 14:48:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:10,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:10,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:10,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:48:10,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:10,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 14:48:10,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:10,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:10,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:10,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 14:48:10,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:10,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:10,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:48:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:10,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:10,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:10,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:48:10,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:10,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:48:10,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:10,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:10,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:10,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:10,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:10,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:10,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:48:10,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839352844] [2020-10-28 14:48:10,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:48:10,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 14:48:10,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690022806] [2020-10-28 14:48:10,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:48:10,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:48:10,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:48:10,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:48:10,330 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 5 states. [2020-10-28 14:48:10,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:48:10,585 INFO L93 Difference]: Finished difference Result 75 states and 86 transitions. [2020-10-28 14:48:10,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:48:10,586 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-28 14:48:10,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:48:10,590 INFO L225 Difference]: With dead ends: 75 [2020-10-28 14:48:10,590 INFO L226 Difference]: Without dead ends: 44 [2020-10-28 14:48:10,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:48:10,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-28 14:48:10,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-28 14:48:10,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-28 14:48:10,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-10-28 14:48:10,611 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 36 [2020-10-28 14:48:10,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:48:10,612 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-10-28 14:48:10,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:48:10,613 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-10-28 14:48:10,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-28 14:48:10,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:48:10,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:48:10,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:48:10,617 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:48:10,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:48:10,618 INFO L82 PathProgramCache]: Analyzing trace with hash -203425564, now seen corresponding path program 1 times [2020-10-28 14:48:10,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:48:10,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355443639] [2020-10-28 14:48:10,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:48:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:10,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:10,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:13,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:13,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 14:48:13,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:48:13,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2742 [2020-10-28 14:48:13,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:13,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:13,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:48:13,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:48:13,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:48:13,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:48:13,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:48:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:13,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:13,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:13,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:48:13,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:13,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:48:13,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:13,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:13,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:13,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:13,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:13,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 14:48:13,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:48:13,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:13,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:13,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:13,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:48:13,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:13,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 14:48:13,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:13,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:13,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:48:13,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:48:13,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:48:13,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:13,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 14:48:13,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:13,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:13,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:13,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:48:13,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:13,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 14:48:13,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:13,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:13,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:13,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 14:48:13,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:13,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:48:13,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:48:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:13,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:13,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:13,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:48:13,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:13,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:48:13,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:13,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:13,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:13,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:13,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:13,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:48:13,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:48:13,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355443639] [2020-10-28 14:48:13,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:48:13,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:48:13,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560450478] [2020-10-28 14:48:13,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:48:13,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:48:13,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:48:13,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:48:13,665 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 8 states. [2020-10-28 14:48:13,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:48:13,988 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2020-10-28 14:48:13,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 14:48:13,991 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-10-28 14:48:13,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:48:13,993 INFO L225 Difference]: With dead ends: 75 [2020-10-28 14:48:13,994 INFO L226 Difference]: Without dead ends: 49 [2020-10-28 14:48:13,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:48:13,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-28 14:48:14,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2020-10-28 14:48:14,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-28 14:48:14,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2020-10-28 14:48:14,010 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 36 [2020-10-28 14:48:14,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:48:14,012 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2020-10-28 14:48:14,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:48:14,012 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2020-10-28 14:48:14,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-28 14:48:14,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:48:14,014 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 14:48:14,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:48:14,014 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:48:14,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:48:14,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1726816192, now seen corresponding path program 1 times [2020-10-28 14:48:14,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:48:14,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950018435] [2020-10-28 14:48:14,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:48:14,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:14,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:15,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:15,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-28 14:48:15,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:15,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1120 [2020-10-28 14:48:15,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:15,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:15,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-28 14:48:15,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:48:15,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 14:48:15,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:48:15,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:48:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:15,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:15,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:15,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:48:15,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:15,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:48:15,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:15,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:15,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:15,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:15,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:15,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:15,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:48:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:15,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:15,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:15,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 14:48:15,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:15,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-28 14:48:15,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:15,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:15,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:48:15,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:15,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 14:48:15,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:15,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 14:48:15,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:15,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:15,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:15,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:48:15,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:15,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-28 14:48:15,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:15,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:15,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 14:48:15,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:48:15,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:48:15,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:48:16,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:48:16,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:16,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:16,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:16,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:48:16,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:16,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 14:48:16,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:16,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:16,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:48:16,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:48:16,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:48:16,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:48:16,459 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:48:16,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950018435] [2020-10-28 14:48:16,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:48:16,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-28 14:48:16,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392166959] [2020-10-28 14:48:16,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 14:48:16,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:48:16,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 14:48:16,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-28 14:48:16,462 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 19 states. [2020-10-28 14:48:17,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:48:17,478 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2020-10-28 14:48:17,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 14:48:17,479 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 41 [2020-10-28 14:48:17,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:48:17,480 INFO L225 Difference]: With dead ends: 50 [2020-10-28 14:48:17,480 INFO L226 Difference]: Without dead ends: 46 [2020-10-28 14:48:17,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2020-10-28 14:48:17,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-28 14:48:17,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-28 14:48:17,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-28 14:48:17,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-28 14:48:17,490 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 41 [2020-10-28 14:48:17,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:48:17,490 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-28 14:48:17,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 14:48:17,490 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-28 14:48:17,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-28 14:48:17,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:48:17,492 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 14:48:17,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:48:17,492 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:48:17,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:48:17,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1603097617, now seen corresponding path program 1 times [2020-10-28 14:48:17,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:48:17,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713941746] [2020-10-28 14:48:17,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:48:17,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:17,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:17,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:18,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:20,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:20,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:22,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:22,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 14:48:22,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:48:22,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 14:48:22,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:22,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:22,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:48:22,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 14:48:22,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:48:22,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:22,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:48:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:22,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:22,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:22,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:48:22,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:22,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:48:22,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:22,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:22,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:22,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:22,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:22,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:22,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:48:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:22,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:22,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:22,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 14:48:22,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:22,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:48:22,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:22,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:22,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:22,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:22,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:22,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:48:22,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 14:48:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:22,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:22,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:23,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:23,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:48:23,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:48:23,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 345 [2020-10-28 14:48:23,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:23,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:23,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:48:23,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:23,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 14:48:23,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:23,300 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2020-10-28 14:48:24,076 WARN L193 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 83 [2020-10-28 14:48:24,320 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 31 [2020-10-28 14:48:24,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:48:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:24,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:24,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:24,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:24,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:48:24,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:48:24,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 14:48:24,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:24,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:24,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:48:24,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:24,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:48:24,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:24,498 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 14:48:24,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713941746] [2020-10-28 14:48:24,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:48:24,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-28 14:48:24,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643874321] [2020-10-28 14:48:24,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 14:48:24,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:48:24,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 14:48:24,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:48:24,502 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 14 states. [2020-10-28 14:48:25,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:48:25,061 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2020-10-28 14:48:25,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 14:48:25,064 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-10-28 14:48:25,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:48:25,067 INFO L225 Difference]: With dead ends: 62 [2020-10-28 14:48:25,067 INFO L226 Difference]: Without dead ends: 57 [2020-10-28 14:48:25,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2020-10-28 14:48:25,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-28 14:48:25,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2020-10-28 14:48:25,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-28 14:48:25,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-28 14:48:25,078 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 43 [2020-10-28 14:48:25,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:48:25,078 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-28 14:48:25,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 14:48:25,079 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-28 14:48:25,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-28 14:48:25,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:48:25,080 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 14:48:25,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 14:48:25,080 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:48:25,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:48:25,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1604706331, now seen corresponding path program 1 times [2020-10-28 14:48:25,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:48:25,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486952085] [2020-10-28 14:48:25,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:48:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:25,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:27,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:27,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 14:48:27,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:27,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1910 [2020-10-28 14:48:27,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:27,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:27,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-28 14:48:27,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:48:27,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 14:48:27,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:27,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:48:27,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:27,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:27,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:27,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:48:27,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:27,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:48:27,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:27,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:27,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:27,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:27,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:27,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:27,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:48:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:27,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:27,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:27,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 14:48:27,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:27,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-28 14:48:27,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:27,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:27,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:48:27,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:27,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 14:48:27,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:27,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 14:48:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:27,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:28,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:28,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:48:28,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:28,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-28 14:48:28,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:28,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:28,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 14:48:28,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:48:28,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:48:28,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:28,397 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-10-28 14:48:28,799 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 75 [2020-10-28 14:48:29,121 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2020-10-28 14:48:29,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:48:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:29,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:29,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:29,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:48:29,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:29,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 14:48:29,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:29,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:29,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:48:29,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:48:29,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:48:29,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:29,694 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 39 [2020-10-28 14:48:29,720 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:48:29,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486952085] [2020-10-28 14:48:29,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:48:29,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-28 14:48:29,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831133437] [2020-10-28 14:48:29,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-28 14:48:29,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:48:29,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-28 14:48:29,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2020-10-28 14:48:29,724 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 26 states. [2020-10-28 14:48:31,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:48:31,679 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2020-10-28 14:48:31,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 14:48:31,680 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 43 [2020-10-28 14:48:31,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:48:31,682 INFO L225 Difference]: With dead ends: 59 [2020-10-28 14:48:31,682 INFO L226 Difference]: Without dead ends: 55 [2020-10-28 14:48:31,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=147, Invalid=1259, Unknown=0, NotChecked=0, Total=1406 [2020-10-28 14:48:31,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-28 14:48:31,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2020-10-28 14:48:31,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-28 14:48:31,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2020-10-28 14:48:31,693 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 43 [2020-10-28 14:48:31,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:48:31,694 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2020-10-28 14:48:31,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-28 14:48:31,694 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2020-10-28 14:48:31,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-28 14:48:31,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:48:31,695 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 14:48:31,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 14:48:31,695 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:48:31,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:48:31,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1990805101, now seen corresponding path program 1 times [2020-10-28 14:48:31,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:48:31,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182198291] [2020-10-28 14:48:31,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:48:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:31,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:31,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:32,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:32,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:34,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:36,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:36,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 14:48:36,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:48:36,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 14:48:36,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:36,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:36,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 14:48:36,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:48:36,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 14:48:36,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:36,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:48:36,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:36,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:36,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:36,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:48:36,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:36,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:48:36,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:36,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:36,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:36,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:36,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:36,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:36,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:48:36,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:36,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:36,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:37,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:37,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 14:48:37,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:48:37,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-28 14:48:37,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:37,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:37,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:48:37,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:37,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 14:48:37,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:37,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 14:48:37,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:37,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:37,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:37,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:37,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:48:37,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:48:37,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-28 14:48:37,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:37,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:37,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:48:37,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:48:37,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:48:37,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:37,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:48:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:37,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:37,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:37,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:48:37,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:37,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 14:48:37,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:37,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:37,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:48:37,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:48:37,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:48:37,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:37,985 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 14:48:37,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182198291] [2020-10-28 14:48:37,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:48:37,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-28 14:48:37,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166747139] [2020-10-28 14:48:37,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 14:48:37,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:48:37,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 14:48:37,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2020-10-28 14:48:37,987 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand 19 states. [2020-10-28 14:48:39,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:48:39,096 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions. [2020-10-28 14:48:39,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 14:48:39,098 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 43 [2020-10-28 14:48:39,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:48:39,099 INFO L225 Difference]: With dead ends: 90 [2020-10-28 14:48:39,099 INFO L226 Difference]: Without dead ends: 48 [2020-10-28 14:48:39,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2020-10-28 14:48:39,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-28 14:48:39,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-28 14:48:39,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-28 14:48:39,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-10-28 14:48:39,117 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 43 [2020-10-28 14:48:39,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:48:39,118 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-10-28 14:48:39,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 14:48:39,118 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-10-28 14:48:39,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-28 14:48:39,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:48:39,122 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:48:39,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 14:48:39,122 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:48:39,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:48:39,123 INFO L82 PathProgramCache]: Analyzing trace with hash 219638188, now seen corresponding path program 1 times [2020-10-28 14:48:39,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:48:39,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642086988] [2020-10-28 14:48:39,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:48:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:39,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:40,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:40,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 14:48:40,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:40,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1415 [2020-10-28 14:48:40,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:40,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:40,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-28 14:48:40,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:48:40,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 14:48:40,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:40,834 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2020-10-28 14:48:41,121 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 43 [2020-10-28 14:48:41,309 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 36 [2020-10-28 14:48:41,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:48:41,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:41,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:41,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:41,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:48:41,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:41,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:48:41,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:41,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:41,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:41,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:41,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:41,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:41,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:48:41,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:41,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:41,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:41,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 14:48:41,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:41,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 14:48:41,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:41,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:41,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:48:41,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:41,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 14:48:41,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:41,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 14:48:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:42,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:42,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:42,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:48:42,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:42,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-10-28 14:48:42,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:42,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:42,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:48:42,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:48:42,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:48:42,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:42,731 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2020-10-28 14:48:44,667 WARN L193 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 188 DAG size of output: 131 [2020-10-28 14:48:45,892 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 166 DAG size of output: 130 [2020-10-28 14:48:46,303 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2020-10-28 14:48:46,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:48:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:46,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:46,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:46,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:48:46,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:46,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 14:48:46,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:46,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:46,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:48:46,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:48:46,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:48:46,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:46,662 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2020-10-28 14:48:46,685 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:48:46,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642086988] [2020-10-28 14:48:46,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:48:46,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-28 14:48:46,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432040880] [2020-10-28 14:48:46,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-28 14:48:46,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:48:46,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-28 14:48:46,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=500, Unknown=0, NotChecked=0, Total=552 [2020-10-28 14:48:46,688 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 24 states. [2020-10-28 14:48:48,224 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-10-28 14:48:48,519 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2020-10-28 14:48:49,130 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2020-10-28 14:48:49,446 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-10-28 14:48:49,693 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2020-10-28 14:48:49,903 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2020-10-28 14:48:50,154 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-10-28 14:48:50,373 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2020-10-28 14:48:50,582 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-28 14:48:50,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:48:50,705 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2020-10-28 14:48:50,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-28 14:48:50,706 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 45 [2020-10-28 14:48:50,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:48:50,707 INFO L225 Difference]: With dead ends: 58 [2020-10-28 14:48:50,707 INFO L226 Difference]: Without dead ends: 53 [2020-10-28 14:48:50,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=163, Invalid=1559, Unknown=0, NotChecked=0, Total=1722 [2020-10-28 14:48:50,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-28 14:48:50,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2020-10-28 14:48:50,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-28 14:48:50,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2020-10-28 14:48:50,719 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 45 [2020-10-28 14:48:50,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:48:50,719 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2020-10-28 14:48:50,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-28 14:48:50,719 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2020-10-28 14:48:50,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-28 14:48:50,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:48:50,720 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 14:48:50,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 14:48:50,721 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:48:50,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:48:50,725 INFO L82 PathProgramCache]: Analyzing trace with hash 221246902, now seen corresponding path program 1 times [2020-10-28 14:48:50,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:48:50,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024296819] [2020-10-28 14:48:50,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:48:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:50,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:52,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:52,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 14:48:52,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:52,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1758 [2020-10-28 14:48:52,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:52,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:52,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-28 14:48:52,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:48:52,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 14:48:52,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:52,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:48:52,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:52,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:52,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:52,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:48:52,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:52,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:48:52,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:52,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:52,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:48:52,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:52,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:48:52,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:52,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:48:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:52,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:53,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:53,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 14:48:53,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:53,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-28 14:48:53,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:53,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:53,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:48:53,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:48:53,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 14:48:53,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:48:53,572 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2020-10-28 14:48:53,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 14:48:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:48:53,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:48:54,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:48:54,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:48:54,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:48:54,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-28 14:48:54,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:48:54,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:48:54,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 14:48:54,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:48:54,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:48:54,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:50:02,803 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-28 14:50:03,986 WARN L193 SmtUtils]: Spent 925.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 117 [2020-10-28 14:50:29,117 WARN L193 SmtUtils]: Spent 24.24 s on a formula simplification. DAG size of input: 451 DAG size of output: 252 [2020-10-28 14:51:56,102 WARN L193 SmtUtils]: Spent 1.41 m on a formula simplification. DAG size of input: 676 DAG size of output: 378 [2020-10-28 14:51:58,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:58,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:58,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:58,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:58,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:58,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 14:51:58,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:58,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:58,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:51:58,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:51:58,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:51:58,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:59,603 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 42 [2020-10-28 14:51:59,657 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:51:59,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024296819] [2020-10-28 14:51:59,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:51:59,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-28 14:51:59,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035803478] [2020-10-28 14:51:59,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-28 14:51:59,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:51:59,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-28 14:51:59,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=694, Unknown=0, NotChecked=0, Total=756 [2020-10-28 14:51:59,659 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 28 states. [2020-10-28 14:52:00,980 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2020-10-28 14:52:01,892 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 86