/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-ext3-properties/sll_of_sll_nondet_append-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:43:28,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:43:28,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:43:28,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:43:28,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:43:28,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:43:28,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:43:28,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:43:28,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:43:28,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:43:28,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:43:28,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:43:28,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:43:28,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:43:28,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:43:28,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:43:28,792 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:43:28,796 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:43:28,803 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:43:28,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:43:28,828 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:43:28,831 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:43:28,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:43:28,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:43:28,844 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:43:28,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:43:28,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:43:28,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:43:28,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:43:28,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:43:28,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:43:28,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:43:28,849 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:43:28,850 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:43:28,851 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:43:28,851 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:43:28,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:43:28,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:43:28,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:43:28,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:43:28,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:43:28,855 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 14:43:28,882 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:43:28,883 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:43:28,884 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:43:28,884 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:43:28,885 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:43:28,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:43:28,885 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:43:28,885 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:43:28,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:43:28,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:43:28,886 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:43:28,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:43:28,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:43:28,887 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:43:28,887 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:43:28,887 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:43:28,887 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:43:28,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:43:28,888 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:43:28,888 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:43:28,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:43:28,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:43:28,889 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:43:28,889 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:43:28,889 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:43:28,889 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:43:28,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:43:28,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:43:28,890 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:43:28,890 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:43:29,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:43:29,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:43:29,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:43:29,319 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:43:29,319 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:43:29,320 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_of_sll_nondet_append-1.i [2020-10-28 14:43:29,405 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2ad5b68f/0c494346e63d4abd8bd10fa4cebe29c9/FLAGfc969724f [2020-10-28 14:43:30,123 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:43:30,124 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_of_sll_nondet_append-1.i [2020-10-28 14:43:30,148 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2ad5b68f/0c494346e63d4abd8bd10fa4cebe29c9/FLAGfc969724f [2020-10-28 14:43:30,405 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2ad5b68f/0c494346e63d4abd8bd10fa4cebe29c9 [2020-10-28 14:43:30,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:43:30,418 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:43:30,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:43:30,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:43:30,429 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:43:30,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:43:30" (1/1) ... [2020-10-28 14:43:30,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62a9769c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:43:30, skipping insertion in model container [2020-10-28 14:43:30,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:43:30" (1/1) ... [2020-10-28 14:43:30,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:43:30,529 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:43:30,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:43:31,017 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:43:31,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:43:31,168 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:43:31,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:43:31 WrapperNode [2020-10-28 14:43:31,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:43:31,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:43:31,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:43:31,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:43:31,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:43:31" (1/1) ... [2020-10-28 14:43:31,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:43:31" (1/1) ... [2020-10-28 14:43:31,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:43:31" (1/1) ... [2020-10-28 14:43:31,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:43:31" (1/1) ... [2020-10-28 14:43:31,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:43:31" (1/1) ... [2020-10-28 14:43:31,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:43:31" (1/1) ... [2020-10-28 14:43:31,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:43:31" (1/1) ... [2020-10-28 14:43:31,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:43:31,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:43:31,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:43:31,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:43:31,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:43:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:43:31,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:43:31,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:43:31,345 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:43:31,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-28 14:43:31,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-28 14:43:31,345 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-28 14:43:31,345 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-28 14:43:31,345 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create_with_sublist [2020-10-28 14:43:31,346 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-10-28 14:43:31,346 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_append [2020-10-28 14:43:31,346 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_hierarchical_destroy [2020-10-28 14:43:31,346 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:43:31,346 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:43:31,346 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:43:31,347 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 14:43:31,347 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 14:43:31,347 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:43:31,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:43:31,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 14:43:31,347 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-28 14:43:31,348 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-28 14:43:31,348 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-28 14:43:31,348 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-28 14:43:31,348 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-28 14:43:31,348 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-28 14:43:31,348 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-28 14:43:31,348 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-28 14:43:31,349 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-28 14:43:31,349 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-28 14:43:31,349 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-28 14:43:31,349 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-28 14:43:31,349 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-28 14:43:31,349 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-28 14:43:31,349 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-28 14:43:31,350 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-28 14:43:31,350 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-28 14:43:31,350 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-28 14:43:31,350 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-28 14:43:31,350 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-28 14:43:31,350 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-28 14:43:31,351 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-28 14:43:31,351 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-28 14:43:31,351 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-28 14:43:31,351 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-28 14:43:31,351 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-28 14:43:31,351 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-28 14:43:31,351 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-28 14:43:31,351 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-28 14:43:31,352 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-28 14:43:31,352 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-28 14:43:31,352 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-28 14:43:31,352 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-28 14:43:31,352 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-28 14:43:31,352 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-28 14:43:31,352 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-28 14:43:31,353 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-28 14:43:31,353 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-28 14:43:31,353 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-28 14:43:31,353 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-28 14:43:31,353 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-28 14:43:31,354 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-28 14:43:31,354 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-28 14:43:31,354 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-28 14:43:31,354 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-28 14:43:31,354 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-28 14:43:31,354 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-28 14:43:31,355 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-28 14:43:31,355 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-28 14:43:31,355 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-28 14:43:31,355 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-28 14:43:31,355 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-28 14:43:31,355 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 14:43:31,355 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 14:43:31,356 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-28 14:43:31,356 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 14:43:31,356 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-28 14:43:31,356 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-28 14:43:31,356 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-28 14:43:31,356 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-28 14:43:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-28 14:43:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-28 14:43:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-28 14:43:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-28 14:43:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:43:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-28 14:43:31,358 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-28 14:43:31,358 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-28 14:43:31,358 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-28 14:43:31,358 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-28 14:43:31,358 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-28 14:43:31,358 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-28 14:43:31,358 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-28 14:43:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-28 14:43:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-28 14:43:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-28 14:43:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-28 14:43:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-28 14:43:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-28 14:43:31,360 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-28 14:43:31,360 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-28 14:43:31,360 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-28 14:43:31,360 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-28 14:43:31,360 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-28 14:43:31,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-28 14:43:31,360 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-28 14:43:31,361 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-28 14:43:31,361 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-28 14:43:31,361 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-28 14:43:31,361 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-28 14:43:31,361 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-28 14:43:31,361 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-28 14:43:31,361 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-28 14:43:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-28 14:43:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-28 14:43:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-28 14:43:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-28 14:43:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-28 14:43:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-28 14:43:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-28 14:43:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-28 14:43:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-28 14:43:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-28 14:43:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-28 14:43:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-28 14:43:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-28 14:43:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 14:43:31,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 14:43:31,364 INFO L130 BoogieDeclarations]: Found specification of procedure node_create_with_sublist [2020-10-28 14:43:31,364 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-10-28 14:43:31,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 14:43:31,364 INFO L130 BoogieDeclarations]: Found specification of procedure sll_append [2020-10-28 14:43:31,364 INFO L130 BoogieDeclarations]: Found specification of procedure sll_hierarchical_destroy [2020-10-28 14:43:31,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:43:31,365 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:43:31,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-28 14:43:31,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:43:31,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:43:31,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:43:31,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:43:31,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:43:31,773 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-28 14:43:32,037 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:43:32,037 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-28 14:43:32,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:43:32 BoogieIcfgContainer [2020-10-28 14:43:32,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:43:32,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:43:32,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:43:32,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:43:32,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:43:30" (1/3) ... [2020-10-28 14:43:32,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50fed348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:43:32, skipping insertion in model container [2020-10-28 14:43:32,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:43:31" (2/3) ... [2020-10-28 14:43:32,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50fed348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:43:32, skipping insertion in model container [2020-10-28 14:43:32,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:43:32" (3/3) ... [2020-10-28 14:43:32,049 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_of_sll_nondet_append-1.i [2020-10-28 14:43:32,062 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:43:32,069 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:43:32,084 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:43:32,130 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:43:32,130 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:43:32,130 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:43:32,130 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:43:32,130 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:43:32,130 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:43:32,131 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:43:32,131 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:43:32,155 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-10-28 14:43:32,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-28 14:43:32,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:43:32,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:43:32,163 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:43:32,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:43:32,170 INFO L82 PathProgramCache]: Analyzing trace with hash 509728839, now seen corresponding path program 1 times [2020-10-28 14:43:32,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:43:32,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144913854] [2020-10-28 14:43:32,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:43:32,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:32,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:32,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:32,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:32,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:32,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:43:32,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:43:32,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-28 14:43:32,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:32,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:32,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:43:32,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:43:32,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:43:32,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 14:43:32,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:43:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:32,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:32,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:32,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:43:32,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:32,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 14:43:32,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:32,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:32,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:32,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:32,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:32,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:43:32,971 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 14:43:32,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144913854] [2020-10-28 14:43:32,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:43:32,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 14:43:32,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418433750] [2020-10-28 14:43:32,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:43:32,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:43:32,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:43:32,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:43:32,997 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 5 states. [2020-10-28 14:43:33,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:43:33,361 INFO L93 Difference]: Finished difference Result 170 states and 255 transitions. [2020-10-28 14:43:33,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:43:33,363 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-28 14:43:33,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:43:33,375 INFO L225 Difference]: With dead ends: 170 [2020-10-28 14:43:33,375 INFO L226 Difference]: Without dead ends: 75 [2020-10-28 14:43:33,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:43:33,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-28 14:43:33,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 57. [2020-10-28 14:43:33,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-28 14:43:33,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2020-10-28 14:43:33,434 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 13 [2020-10-28 14:43:33,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:43:33,435 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2020-10-28 14:43:33,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:43:33,435 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2020-10-28 14:43:33,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 14:43:33,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:43:33,436 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:43:33,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:43:33,437 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:43:33,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:43:33,438 INFO L82 PathProgramCache]: Analyzing trace with hash 188751340, now seen corresponding path program 1 times [2020-10-28 14:43:33,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:43:33,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431099853] [2020-10-28 14:43:33,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:43:33,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:33,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:33,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:33,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:33,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:33,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:33,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:34,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:34,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 14:43:34,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 14:43:34,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 817 [2020-10-28 14:43:34,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:34,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:34,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:43:34,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:43:34,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 14:43:34,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:34,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:43:34,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:34,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:34,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:34,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:43:34,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:34,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:43:34,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:34,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:34,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:34,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:34,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:34,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:43:34,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 14:43:34,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431099853] [2020-10-28 14:43:34,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:43:34,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 14:43:34,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344883375] [2020-10-28 14:43:34,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:43:34,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:43:34,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:43:34,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:43:34,377 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand 5 states. [2020-10-28 14:43:34,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:43:34,568 INFO L93 Difference]: Finished difference Result 90 states and 111 transitions. [2020-10-28 14:43:34,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 14:43:34,569 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-28 14:43:34,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:43:34,570 INFO L225 Difference]: With dead ends: 90 [2020-10-28 14:43:34,571 INFO L226 Difference]: Without dead ends: 67 [2020-10-28 14:43:34,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:43:34,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-28 14:43:34,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2020-10-28 14:43:34,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-28 14:43:34,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2020-10-28 14:43:34,584 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 22 [2020-10-28 14:43:34,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:43:34,585 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2020-10-28 14:43:34,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:43:34,585 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2020-10-28 14:43:34,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-28 14:43:34,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:43:34,587 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:43:34,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:43:34,587 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:43:34,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:43:34,588 INFO L82 PathProgramCache]: Analyzing trace with hash 538737768, now seen corresponding path program 1 times [2020-10-28 14:43:34,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:43:34,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469145239] [2020-10-28 14:43:34,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:43:34,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:34,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:34,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:35,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:35,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 14:43:35,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:43:35,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 878 [2020-10-28 14:43:35,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:35,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:35,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:43:35,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:43:35,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 14:43:35,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:35,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:43:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:35,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:35,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:35,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:43:35,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:35,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:43:35,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:35,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:35,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:35,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:35,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:35,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:35,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 14:43:35,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:35,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:35,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:35,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 14:43:35,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:35,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 14:43:35,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:35,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:35,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:43:35,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:35,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 14:43:35,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 14:43:35,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:43:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:35,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:35,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:35,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:43:35,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:35,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:43:35,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:35,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:35,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:35,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:35,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:35,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:43:35,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:43:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:35,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:35,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:35,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:43:35,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:35,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:43:35,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:35,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:35,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:35,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:35,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:35,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:43:35,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 14:43:35,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:35,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:35,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:35,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:43:35,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:35,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:43:35,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:35,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:35,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:35,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:43:35,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:35,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:35,749 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:43:35,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469145239] [2020-10-28 14:43:35,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:43:35,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 14:43:35,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568556656] [2020-10-28 14:43:35,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:43:35,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:43:35,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:43:35,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:43:35,758 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand 6 states. [2020-10-28 14:43:36,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:43:36,023 INFO L93 Difference]: Finished difference Result 110 states and 138 transitions. [2020-10-28 14:43:36,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:43:36,024 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-10-28 14:43:36,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:43:36,026 INFO L225 Difference]: With dead ends: 110 [2020-10-28 14:43:36,026 INFO L226 Difference]: Without dead ends: 89 [2020-10-28 14:43:36,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:43:36,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-28 14:43:36,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 72. [2020-10-28 14:43:36,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-28 14:43:36,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 89 transitions. [2020-10-28 14:43:36,040 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 89 transitions. Word has length 51 [2020-10-28 14:43:36,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:43:36,040 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 89 transitions. [2020-10-28 14:43:36,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:43:36,041 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 89 transitions. [2020-10-28 14:43:36,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 14:43:36,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:43:36,044 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:43:36,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:43:36,044 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:43:36,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:43:36,045 INFO L82 PathProgramCache]: Analyzing trace with hash 773481162, now seen corresponding path program 2 times [2020-10-28 14:43:36,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:43:36,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109916844] [2020-10-28 14:43:36,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:43:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:36,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:36,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:36,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:37,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:37,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 14:43:37,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:43:37,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1252 [2020-10-28 14:43:37,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:37,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:37,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:43:37,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:43:37,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 14:43:37,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:37,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:43:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:37,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:37,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:37,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:43:37,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:37,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:43:37,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:37,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:37,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:37,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:37,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:37,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:37,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:43:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:37,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:37,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:37,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 14:43:37,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:37,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 14:43:37,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:37,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:37,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:43:37,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:37,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 14:43:37,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:43:37,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:43:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:37,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:37,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:37,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:43:37,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:37,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:43:37,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:37,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:37,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:37,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:37,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:37,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:37,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:43:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:37,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:37,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:37,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:43:37,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:37,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:43:37,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:37,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:37,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:37,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:37,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:37,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:43:37,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 14:43:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:37,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:37,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:37,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:43:37,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:37,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:43:37,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:37,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:37,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:37,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:43:37,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:37,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:37,571 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:43:37,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109916844] [2020-10-28 14:43:37,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:43:37,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:43:37,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968805108] [2020-10-28 14:43:37,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:43:37,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:43:37,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:43:37,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:43:37,574 INFO L87 Difference]: Start difference. First operand 72 states and 89 transitions. Second operand 7 states. [2020-10-28 14:43:37,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:43:37,897 INFO L93 Difference]: Finished difference Result 115 states and 144 transitions. [2020-10-28 14:43:37,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 14:43:37,898 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-10-28 14:43:37,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:43:37,900 INFO L225 Difference]: With dead ends: 115 [2020-10-28 14:43:37,900 INFO L226 Difference]: Without dead ends: 94 [2020-10-28 14:43:37,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:43:37,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-28 14:43:37,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2020-10-28 14:43:37,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-28 14:43:37,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 107 transitions. [2020-10-28 14:43:37,914 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 107 transitions. Word has length 56 [2020-10-28 14:43:37,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:43:37,915 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 107 transitions. [2020-10-28 14:43:37,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:43:37,915 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 107 transitions. [2020-10-28 14:43:37,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-28 14:43:37,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:43:37,918 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:37,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:43:37,918 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:43:37,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:43:37,919 INFO L82 PathProgramCache]: Analyzing trace with hash 2014783912, now seen corresponding path program 3 times [2020-10-28 14:43:37,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:43:37,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845005471] [2020-10-28 14:43:37,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:43:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:37,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:37,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:39,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:39,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 14:43:39,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:43:39,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1232 [2020-10-28 14:43:39,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:39,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:39,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:43:39,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:43:39,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 14:43:39,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:39,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:43:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:39,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:39,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:39,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:43:39,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:39,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:43:39,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:39,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:39,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:39,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:39,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:39,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:43:39,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 14:43:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:39,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:39,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:39,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 14:43:39,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:39,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-28 14:43:39,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:39,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:39,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:43:39,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:39,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 14:43:39,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:39,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:43:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:39,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:39,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:39,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:43:39,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:39,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 14:43:39,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:39,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:39,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:43:39,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:39,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:43:39,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:43:39,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:43:39,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:39,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:39,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:39,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:43:39,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:39,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 14:43:39,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:39,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:39,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:43:39,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:39,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:43:39,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:43:39,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 14:43:39,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:39,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:39,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:39,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:43:39,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:39,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:43:39,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:39,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:39,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:39,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:43:39,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:39,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:43:39,763 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 14:43:39,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845005471] [2020-10-28 14:43:39,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:43:39,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 14:43:39,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709075771] [2020-10-28 14:43:39,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 14:43:39,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:43:39,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 14:43:39,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:43:39,766 INFO L87 Difference]: Start difference. First operand 85 states and 107 transitions. Second operand 13 states. [2020-10-28 14:43:40,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:43:40,501 INFO L93 Difference]: Finished difference Result 156 states and 208 transitions. [2020-10-28 14:43:40,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 14:43:40,501 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 61 [2020-10-28 14:43:40,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:43:40,504 INFO L225 Difference]: With dead ends: 156 [2020-10-28 14:43:40,504 INFO L226 Difference]: Without dead ends: 134 [2020-10-28 14:43:40,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2020-10-28 14:43:40,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-28 14:43:40,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 99. [2020-10-28 14:43:40,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-28 14:43:40,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 126 transitions. [2020-10-28 14:43:40,521 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 126 transitions. Word has length 61 [2020-10-28 14:43:40,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:43:40,522 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 126 transitions. [2020-10-28 14:43:40,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 14:43:40,522 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 126 transitions. [2020-10-28 14:43:40,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-28 14:43:40,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:43:40,525 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:40,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 14:43:40,526 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:43:40,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:43:40,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1181576097, now seen corresponding path program 1 times [2020-10-28 14:43:40,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:43:40,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683412033] [2020-10-28 14:43:40,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:43:40,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:40,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:40,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:40,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:41,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:42,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:44,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:45,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:45,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 14:43:45,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 14:43:45,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 14:43:45,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:45,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:45,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:43:45,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:43:45,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 14:43:45,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:45,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:43:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:45,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:45,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:45,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:43:45,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:45,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:43:45,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:45,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:45,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:45,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:45,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:45,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:45,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 14:43:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:45,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:45,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:45,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:43:45,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:45,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-28 14:43:45,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:45,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:45,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:43:45,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:45,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 14:43:45,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:45,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:43:45,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:45,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:45,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:45,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:43:45,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:45,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 14:43:45,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:45,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:45,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:43:45,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:45,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:43:45,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:45,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:43:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:45,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:46,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:46,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 14:43:46,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:46,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 14:43:46,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:46,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:46,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:43:46,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:46,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:43:46,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:46,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 14:43:46,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:46,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:46,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:46,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:43:46,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:46,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:43:46,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:46,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:46,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:46,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:43:46,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:46,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:46,102 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 14:43:46,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683412033] [2020-10-28 14:43:46,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:43:46,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 14:43:46,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081045324] [2020-10-28 14:43:46,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 14:43:46,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:43:46,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 14:43:46,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:43:46,105 INFO L87 Difference]: Start difference. First operand 99 states and 126 transitions. Second operand 14 states. [2020-10-28 14:43:46,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:43:46,843 INFO L93 Difference]: Finished difference Result 172 states and 234 transitions. [2020-10-28 14:43:46,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 14:43:46,845 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 64 [2020-10-28 14:43:46,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:43:46,848 INFO L225 Difference]: With dead ends: 172 [2020-10-28 14:43:46,849 INFO L226 Difference]: Without dead ends: 150 [2020-10-28 14:43:46,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2020-10-28 14:43:46,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-28 14:43:46,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 102. [2020-10-28 14:43:46,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-28 14:43:46,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 130 transitions. [2020-10-28 14:43:46,880 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 130 transitions. Word has length 64 [2020-10-28 14:43:46,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:43:46,881 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 130 transitions. [2020-10-28 14:43:46,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 14:43:46,881 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 130 transitions. [2020-10-28 14:43:46,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-28 14:43:46,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:43:46,884 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:46,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 14:43:46,884 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:43:46,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:43:46,885 INFO L82 PathProgramCache]: Analyzing trace with hash 960031930, now seen corresponding path program 4 times [2020-10-28 14:43:46,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:43:46,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797850601] [2020-10-28 14:43:46,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:43:46,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:46,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:46,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:47,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:48,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:48,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 14:43:48,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:43:48,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1806 [2020-10-28 14:43:48,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:48,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:48,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:43:48,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:43:48,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 14:43:48,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:48,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:43:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:48,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:48,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:48,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:43:48,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:48,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:43:48,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:48,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:48,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:48,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:48,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:48,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:48,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 14:43:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:48,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:48,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:48,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 14:43:48,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:48,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 14:43:48,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:48,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:48,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:43:48,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:48,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 14:43:48,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:48,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:43:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:48,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:48,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:48,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:43:48,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:48,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:43:48,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:48,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:48,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:48,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:48,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:48,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:48,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:43:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:48,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:48,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:48,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:43:48,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:48,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:43:48,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:48,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:48,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:48,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:48,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:48,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:43:48,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 14:43:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:48,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:48,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:48,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:43:48,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:48,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:43:48,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:48,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:48,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:48,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:43:48,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:48,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:48,920 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 29 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:43:48,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797850601] [2020-10-28 14:43:48,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:43:48,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:43:48,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619264199] [2020-10-28 14:43:48,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:43:48,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:43:48,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:43:48,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:43:48,923 INFO L87 Difference]: Start difference. First operand 102 states and 130 transitions. Second operand 8 states. [2020-10-28 14:43:49,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:43:49,217 INFO L93 Difference]: Finished difference Result 195 states and 247 transitions. [2020-10-28 14:43:49,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 14:43:49,217 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-10-28 14:43:49,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:43:49,219 INFO L225 Difference]: With dead ends: 195 [2020-10-28 14:43:49,219 INFO L226 Difference]: Without dead ends: 106 [2020-10-28 14:43:49,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:43:49,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-28 14:43:49,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 102. [2020-10-28 14:43:49,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-28 14:43:49,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 127 transitions. [2020-10-28 14:43:49,233 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 127 transitions. Word has length 66 [2020-10-28 14:43:49,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:43:49,233 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 127 transitions. [2020-10-28 14:43:49,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:43:49,234 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 127 transitions. [2020-10-28 14:43:49,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-28 14:43:49,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:43:49,235 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:49,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 14:43:49,235 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:43:49,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:43:49,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1263933656, now seen corresponding path program 5 times [2020-10-28 14:43:49,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:43:49,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075249660] [2020-10-28 14:43:49,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:43:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:49,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:49,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:49,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:49,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 14:43:49,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:43:49,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 730 [2020-10-28 14:43:49,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:49,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:49,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:43:49,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:43:49,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 14:43:49,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:50,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:43:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:50,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:50,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:50,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:43:50,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:50,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:43:50,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:50,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:50,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:50,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:50,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:50,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:50,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:43:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:50,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:50,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:50,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 14:43:50,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:50,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-28 14:43:50,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:50,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:50,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:43:50,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:50,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 14:43:50,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:50,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:43:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:50,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:50,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:50,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:43:50,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:50,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 14:43:50,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:50,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:50,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:43:50,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:50,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:43:50,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:50,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:43:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:50,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:50,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:50,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:43:50,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:50,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:43:50,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:50,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:50,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:43:50,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:50,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:43:50,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:50,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 14:43:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:50,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:50,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:50,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:43:50,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:50,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:43:50,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:50,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:50,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:50,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:43:50,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:50,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:50,399 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 14:43:50,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075249660] [2020-10-28 14:43:50,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:43:50,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 14:43:50,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145660440] [2020-10-28 14:43:50,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 14:43:50,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:43:50,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 14:43:50,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:43:50,402 INFO L87 Difference]: Start difference. First operand 102 states and 127 transitions. Second operand 14 states. [2020-10-28 14:43:51,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:43:51,126 INFO L93 Difference]: Finished difference Result 171 states and 224 transitions. [2020-10-28 14:43:51,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 14:43:51,126 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 61 [2020-10-28 14:43:51,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:43:51,129 INFO L225 Difference]: With dead ends: 171 [2020-10-28 14:43:51,129 INFO L226 Difference]: Without dead ends: 135 [2020-10-28 14:43:51,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2020-10-28 14:43:51,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-28 14:43:51,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 115. [2020-10-28 14:43:51,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-28 14:43:51,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 142 transitions. [2020-10-28 14:43:51,144 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 142 transitions. Word has length 61 [2020-10-28 14:43:51,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:43:51,144 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 142 transitions. [2020-10-28 14:43:51,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 14:43:51,145 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 142 transitions. [2020-10-28 14:43:51,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-28 14:43:51,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:43:51,146 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:43:51,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 14:43:51,147 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:43:51,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:43:51,147 INFO L82 PathProgramCache]: Analyzing trace with hash -222684600, now seen corresponding path program 2 times [2020-10-28 14:43:51,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:43:51,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660409583] [2020-10-28 14:43:51,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:43:51,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:51,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:51,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:51,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:51,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:51,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:52,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:56,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:56,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 14:43:56,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 14:43:56,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 14:43:56,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:56,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:56,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:43:56,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:43:56,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 14:43:56,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:56,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:43:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:56,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:56,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:56,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:43:56,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:56,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:43:56,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:56,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:56,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:56,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:56,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:56,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:56,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 14:43:56,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:56,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:56,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:56,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:43:56,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:56,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-28 14:43:56,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:56,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:56,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:43:56,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:56,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 14:43:56,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:56,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:43:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:56,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:56,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:56,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 14:43:56,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:56,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 14:43:56,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:56,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:56,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:43:56,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:56,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 14:43:56,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:56,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:43:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:56,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:56,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:56,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 14:43:56,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:56,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 14:43:56,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:56,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:56,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:43:56,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:43:56,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 14:43:56,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:56,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 14:43:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:56,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:56,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:43:56,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:43:56,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:43:56,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:43:56,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:43:56,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:43:56,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:43:56,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:43:56,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:43:56,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:43:56,804 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 14:43:56,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660409583] [2020-10-28 14:43:56,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:43:56,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 14:43:56,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331822654] [2020-10-28 14:43:56,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 14:43:56,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:43:56,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 14:43:56,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:43:56,817 INFO L87 Difference]: Start difference. First operand 115 states and 142 transitions. Second operand 15 states. [2020-10-28 14:43:57,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:43:57,624 INFO L93 Difference]: Finished difference Result 188 states and 248 transitions. [2020-10-28 14:43:57,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 14:43:57,625 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 67 [2020-10-28 14:43:57,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:43:57,627 INFO L225 Difference]: With dead ends: 188 [2020-10-28 14:43:57,627 INFO L226 Difference]: Without dead ends: 159 [2020-10-28 14:43:57,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2020-10-28 14:43:57,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-28 14:43:57,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 118. [2020-10-28 14:43:57,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-28 14:43:57,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 146 transitions. [2020-10-28 14:43:57,643 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 146 transitions. Word has length 67 [2020-10-28 14:43:57,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:43:57,643 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 146 transitions. [2020-10-28 14:43:57,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 14:43:57,643 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 146 transitions. [2020-10-28 14:43:57,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-28 14:43:57,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:43:57,644 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:57,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 14:43:57,645 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:43:57,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:43:57,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1217948795, now seen corresponding path program 3 times [2020-10-28 14:43:57,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:43:57,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136340008] [2020-10-28 14:43:57,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:43:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:43:57,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:57,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:57,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:58,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:59,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:43:59,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:02,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:02,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 14:44:02,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 14:44:02,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 14:44:02,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:02,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:02,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:44:02,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:44:02,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 14:44:02,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:02,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:02,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:02,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:02,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:02,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:02,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:44:02,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:02,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:02,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:02,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:02,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:02,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:02,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:44:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:02,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:02,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:02,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:44:02,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:02,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-28 14:44:02,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:02,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:02,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:44:02,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:02,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 14:44:02,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:02,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:44:02,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:02,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:03,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:03,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:44:03,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:03,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 14:44:03,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:03,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:03,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:44:03,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:03,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:44:03,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:03,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:44:03,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:03,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:03,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:03,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 14:44:03,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:03,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 14:44:03,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:03,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:03,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:44:03,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:03,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:44:03,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:03,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 14:44:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:03,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:03,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:03,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:03,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:03,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:44:03,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:03,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:03,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:03,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:44:03,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:03,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:03,157 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 14:44:03,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136340008] [2020-10-28 14:44:03,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:44:03,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 14:44:03,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489534684] [2020-10-28 14:44:03,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 14:44:03,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:44:03,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 14:44:03,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:44:03,159 INFO L87 Difference]: Start difference. First operand 118 states and 146 transitions. Second operand 15 states. [2020-10-28 14:44:04,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:44:04,027 INFO L93 Difference]: Finished difference Result 187 states and 244 transitions. [2020-10-28 14:44:04,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 14:44:04,033 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 64 [2020-10-28 14:44:04,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:44:04,034 INFO L225 Difference]: With dead ends: 187 [2020-10-28 14:44:04,035 INFO L226 Difference]: Without dead ends: 151 [2020-10-28 14:44:04,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2020-10-28 14:44:04,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-28 14:44:04,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 118. [2020-10-28 14:44:04,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-28 14:44:04,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 146 transitions. [2020-10-28 14:44:04,064 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 146 transitions. Word has length 64 [2020-10-28 14:44:04,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:44:04,066 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 146 transitions. [2020-10-28 14:44:04,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 14:44:04,066 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 146 transitions. [2020-10-28 14:44:04,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-28 14:44:04,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:04,067 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:04,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 14:44:04,067 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:04,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:04,068 INFO L82 PathProgramCache]: Analyzing trace with hash 286416831, now seen corresponding path program 4 times [2020-10-28 14:44:04,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:04,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490098172] [2020-10-28 14:44:04,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:04,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:04,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:04,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:04,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:04,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:05,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:07,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:09,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:09,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 14:44:09,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 14:44:09,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 14:44:09,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:09,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:09,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:44:09,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:44:09,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 14:44:09,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:09,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:09,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:09,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:09,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:09,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:09,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:44:09,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:09,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:09,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:09,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:09,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:09,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:09,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 14:44:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:09,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:09,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:09,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 14:44:09,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:09,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-28 14:44:09,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:09,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:09,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:44:09,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:09,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 14:44:09,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:44:09,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:44:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:09,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:09,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:09,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 14:44:09,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:09,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-28 14:44:09,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:09,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:09,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:44:09,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:09,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 14:44:09,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:44:09,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:44:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:09,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:09,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:09,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:44:09,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:09,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 14:44:09,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:09,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:09,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:44:09,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:09,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 14:44:09,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:09,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 14:44:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:09,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:09,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:09,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:09,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:09,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:44:09,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:09,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:09,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:09,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:44:09,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:09,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:09,906 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 14:44:09,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490098172] [2020-10-28 14:44:09,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:44:09,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 14:44:09,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557574773] [2020-10-28 14:44:09,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 14:44:09,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:44:09,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 14:44:09,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:44:09,908 INFO L87 Difference]: Start difference. First operand 118 states and 146 transitions. Second operand 16 states. [2020-10-28 14:44:10,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:44:10,659 INFO L93 Difference]: Finished difference Result 181 states and 231 transitions. [2020-10-28 14:44:10,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 14:44:10,661 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 70 [2020-10-28 14:44:10,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:44:10,664 INFO L225 Difference]: With dead ends: 181 [2020-10-28 14:44:10,664 INFO L226 Difference]: Without dead ends: 152 [2020-10-28 14:44:10,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2020-10-28 14:44:10,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-28 14:44:10,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 121. [2020-10-28 14:44:10,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-28 14:44:10,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 150 transitions. [2020-10-28 14:44:10,678 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 150 transitions. Word has length 70 [2020-10-28 14:44:10,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:44:10,678 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 150 transitions. [2020-10-28 14:44:10,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 14:44:10,678 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 150 transitions. [2020-10-28 14:44:10,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-28 14:44:10,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:10,680 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:10,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 14:44:10,680 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:10,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:10,681 INFO L82 PathProgramCache]: Analyzing trace with hash -151181400, now seen corresponding path program 6 times [2020-10-28 14:44:10,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:10,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448417984] [2020-10-28 14:44:10,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:10,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:10,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:10,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:10,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 14:44:10,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:10,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-28 14:44:10,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:10,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:10,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:44:10,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:44:10,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:44:10,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:10,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:10,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:10,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:10,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:10,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:10,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:44:10,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:10,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:10,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:10,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:10,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:10,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:10,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 14:44:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:10,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:11,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:11,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 14:44:11,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:11,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 14:44:11,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:11,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:11,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:44:11,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:44:11,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 14:44:11,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:11,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:44:11,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:11,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:11,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:11,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:44:11,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:11,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 14:44:11,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:11,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:11,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:44:11,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:11,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:44:11,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:11,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:44:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:11,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:11,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:11,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:11,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:11,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:44:11,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:11,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:11,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:44:11,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:11,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:44:11,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:11,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 14:44:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:11,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:11,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:11,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:11,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:11,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:44:11,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:11,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:11,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:11,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:44:11,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:11,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:11,243 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 14:44:11,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448417984] [2020-10-28 14:44:11,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:44:11,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 14:44:11,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269805270] [2020-10-28 14:44:11,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 14:44:11,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:44:11,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 14:44:11,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:44:11,245 INFO L87 Difference]: Start difference. First operand 121 states and 150 transitions. Second operand 11 states. [2020-10-28 14:44:11,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:44:11,682 INFO L93 Difference]: Finished difference Result 235 states and 290 transitions. [2020-10-28 14:44:11,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 14:44:11,683 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 61 [2020-10-28 14:44:11,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:44:11,685 INFO L225 Difference]: With dead ends: 235 [2020-10-28 14:44:11,685 INFO L226 Difference]: Without dead ends: 121 [2020-10-28 14:44:11,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-10-28 14:44:11,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-28 14:44:11,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2020-10-28 14:44:11,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-28 14:44:11,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 149 transitions. [2020-10-28 14:44:11,700 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 149 transitions. Word has length 61 [2020-10-28 14:44:11,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:44:11,700 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 149 transitions. [2020-10-28 14:44:11,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 14:44:11,700 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 149 transitions. [2020-10-28 14:44:11,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-28 14:44:11,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:11,701 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:44:11,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 14:44:11,702 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:11,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:11,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1116045896, now seen corresponding path program 5 times [2020-10-28 14:44:11,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:11,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820100443] [2020-10-28 14:44:11,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:11,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:11,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:11,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:11,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:12,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:12,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:13,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:16,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:16,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 14:44:16,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 14:44:16,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 14:44:16,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:16,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:16,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:44:16,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:44:16,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 14:44:16,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:16,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:16,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:16,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:16,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:16,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:16,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:44:16,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:16,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:16,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:16,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:16,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:16,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:16,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:44:16,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:16,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:16,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:16,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:44:16,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:16,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-28 14:44:16,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:16,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:16,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:44:16,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:16,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 14:44:16,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:16,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:44:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:16,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:16,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:16,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 14:44:16,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:16,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 14:44:16,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:16,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:16,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:44:16,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:16,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 14:44:16,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:17,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:44:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:17,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:17,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:17,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 14:44:17,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:17,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 14:44:17,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:17,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:17,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:44:17,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:17,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 14:44:17,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:17,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 14:44:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:17,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:17,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:17,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:17,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:17,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:44:17,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:17,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:17,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:17,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:44:17,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:17,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:17,168 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 14:44:17,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820100443] [2020-10-28 14:44:17,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:44:17,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 14:44:17,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266661709] [2020-10-28 14:44:17,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 14:44:17,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:44:17,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 14:44:17,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:44:17,170 INFO L87 Difference]: Start difference. First operand 121 states and 149 transitions. Second operand 16 states. [2020-10-28 14:44:17,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:44:17,965 INFO L93 Difference]: Finished difference Result 190 states and 247 transitions. [2020-10-28 14:44:17,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 14:44:17,967 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 67 [2020-10-28 14:44:17,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:44:17,968 INFO L225 Difference]: With dead ends: 190 [2020-10-28 14:44:17,969 INFO L226 Difference]: Without dead ends: 154 [2020-10-28 14:44:17,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2020-10-28 14:44:17,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-28 14:44:17,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 121. [2020-10-28 14:44:17,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-28 14:44:17,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 149 transitions. [2020-10-28 14:44:17,991 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 149 transitions. Word has length 67 [2020-10-28 14:44:17,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:44:17,991 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 149 transitions. [2020-10-28 14:44:17,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 14:44:17,991 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 149 transitions. [2020-10-28 14:44:17,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-28 14:44:17,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:17,992 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:17,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 14:44:17,992 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:17,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:17,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1397625576, now seen corresponding path program 6 times [2020-10-28 14:44:17,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:17,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938684693] [2020-10-28 14:44:17,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:18,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:18,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:18,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:18,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:18,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:21,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:23,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:23,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 14:44:23,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 14:44:23,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 14:44:23,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:23,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:23,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 14:44:23,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:44:23,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-28 14:44:23,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:23,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:23,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:23,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:23,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:23,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:23,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:44:23,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:23,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:23,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:23,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:23,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:23,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:23,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 14:44:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:23,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:23,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:23,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 14:44:23,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:23,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-28 14:44:23,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:23,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:23,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:44:23,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:23,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 14:44:23,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:23,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:44:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:23,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:23,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:23,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 14:44:23,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:23,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 14:44:23,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:23,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:23,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:44:23,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:23,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 14:44:23,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:23,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:44:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:23,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:23,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:23,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:44:23,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:23,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 14:44:23,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:23,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:23,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:44:23,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:23,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 14:44:23,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:23,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 14:44:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:23,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:23,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:23,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:23,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:23,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:44:23,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:23,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:23,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:23,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:44:23,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:23,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:23,644 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 14:44:23,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938684693] [2020-10-28 14:44:23,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:44:23,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 14:44:23,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532159494] [2020-10-28 14:44:23,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 14:44:23,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:44:23,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 14:44:23,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-10-28 14:44:23,646 INFO L87 Difference]: Start difference. First operand 121 states and 149 transitions. Second operand 17 states. [2020-10-28 14:44:24,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:44:24,460 INFO L93 Difference]: Finished difference Result 180 states and 226 transitions. [2020-10-28 14:44:24,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 14:44:24,464 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 73 [2020-10-28 14:44:24,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:44:24,466 INFO L225 Difference]: With dead ends: 180 [2020-10-28 14:44:24,466 INFO L226 Difference]: Without dead ends: 151 [2020-10-28 14:44:24,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=108, Invalid=648, Unknown=0, NotChecked=0, Total=756 [2020-10-28 14:44:24,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-28 14:44:24,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 121. [2020-10-28 14:44:24,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-28 14:44:24,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 149 transitions. [2020-10-28 14:44:24,479 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 149 transitions. Word has length 73 [2020-10-28 14:44:24,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:44:24,479 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 149 transitions. [2020-10-28 14:44:24,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 14:44:24,479 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 149 transitions. [2020-10-28 14:44:24,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-28 14:44:24,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:24,481 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:24,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 14:44:24,481 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:24,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:24,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1565385697, now seen corresponding path program 7 times [2020-10-28 14:44:24,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:24,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529603509] [2020-10-28 14:44:24,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:24,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:24,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:24,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:24,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:25,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:29,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:29,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 14:44:29,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:44:29,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 14:44:29,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:29,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:29,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:44:29,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:44:29,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 14:44:29,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:29,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:29,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:29,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:29,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:29,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:29,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:44:29,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:29,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:29,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:29,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:29,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:29,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:29,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 14:44:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:29,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:29,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:29,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:44:29,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:29,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 14:44:29,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:29,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:29,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:44:29,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:44:29,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 14:44:29,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:29,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:44:29,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:29,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:29,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:29,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:44:29,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:29,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 14:44:29,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:29,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:29,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:44:29,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:29,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:44:29,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:29,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:44:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:29,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:29,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:29,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 14:44:29,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:29,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 14:44:29,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:29,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:29,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:44:29,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:29,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:44:29,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:29,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 14:44:29,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:29,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:29,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:29,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:29,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:29,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:44:29,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:29,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:29,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:29,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:44:29,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:29,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:29,867 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 14:44:29,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529603509] [2020-10-28 14:44:29,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:44:29,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 14:44:29,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973263863] [2020-10-28 14:44:29,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 14:44:29,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:44:29,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 14:44:29,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:44:29,869 INFO L87 Difference]: Start difference. First operand 121 states and 149 transitions. Second operand 12 states. [2020-10-28 14:44:30,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:44:30,381 INFO L93 Difference]: Finished difference Result 235 states and 288 transitions. [2020-10-28 14:44:30,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 14:44:30,383 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 64 [2020-10-28 14:44:30,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:44:30,386 INFO L225 Difference]: With dead ends: 235 [2020-10-28 14:44:30,387 INFO L226 Difference]: Without dead ends: 121 [2020-10-28 14:44:30,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-10-28 14:44:30,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-28 14:44:30,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2020-10-28 14:44:30,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-28 14:44:30,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 148 transitions. [2020-10-28 14:44:30,409 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 148 transitions. Word has length 64 [2020-10-28 14:44:30,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:44:30,410 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 148 transitions. [2020-10-28 14:44:30,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 14:44:30,410 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 148 transitions. [2020-10-28 14:44:30,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-28 14:44:30,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:30,412 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:30,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 14:44:30,413 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:30,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:30,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1868660059, now seen corresponding path program 8 times [2020-10-28 14:44:30,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:30,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612802333] [2020-10-28 14:44:30,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:30,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:30,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:30,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:30,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:30,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:31,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:31,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:35,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:35,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 14:44:35,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 14:44:35,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 14:44:35,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:35,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:35,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 14:44:35,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:44:35,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 14:44:35,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:35,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:35,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:35,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:35,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:35,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:35,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:44:35,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:35,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:35,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:35,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:35,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:35,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:35,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:44:35,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:35,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:35,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:35,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 14:44:35,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:35,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 14:44:35,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:35,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:35,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:44:35,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:35,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 14:44:35,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:35,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:44:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:35,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:35,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:35,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 14:44:35,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:35,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 14:44:35,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:35,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:35,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:44:35,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:35,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 14:44:35,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:35,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:44:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:35,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:35,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:35,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:44:35,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:35,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 14:44:35,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:35,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:35,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:44:35,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:35,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 14:44:35,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:35,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 14:44:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:35,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:35,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:35,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:35,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:35,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:44:35,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:35,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:35,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:35,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:44:35,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:35,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:35,986 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 14:44:35,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612802333] [2020-10-28 14:44:35,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:44:35,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 14:44:35,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927716153] [2020-10-28 14:44:35,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 14:44:35,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:44:35,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 14:44:35,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2020-10-28 14:44:35,988 INFO L87 Difference]: Start difference. First operand 121 states and 148 transitions. Second operand 17 states. [2020-10-28 14:44:36,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:44:36,828 INFO L93 Difference]: Finished difference Result 169 states and 210 transitions. [2020-10-28 14:44:36,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 14:44:36,829 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 70 [2020-10-28 14:44:36,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:44:36,833 INFO L225 Difference]: With dead ends: 169 [2020-10-28 14:44:36,835 INFO L226 Difference]: Without dead ends: 136 [2020-10-28 14:44:36,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=607, Unknown=0, NotChecked=0, Total=702 [2020-10-28 14:44:36,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-28 14:44:36,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 121. [2020-10-28 14:44:36,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-28 14:44:36,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 148 transitions. [2020-10-28 14:44:36,860 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 148 transitions. Word has length 70 [2020-10-28 14:44:36,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:44:36,860 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 148 transitions. [2020-10-28 14:44:36,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 14:44:36,861 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 148 transitions. [2020-10-28 14:44:36,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-28 14:44:36,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:36,863 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:36,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 14:44:36,863 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:36,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:36,864 INFO L82 PathProgramCache]: Analyzing trace with hash -190569697, now seen corresponding path program 9 times [2020-10-28 14:44:36,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:36,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244965334] [2020-10-28 14:44:36,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:36,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:37,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:37,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:37,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:41,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:41,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 14:44:41,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:44:41,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 14:44:41,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:41,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:41,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 14:44:41,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 14:44:41,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-28 14:44:41,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:42,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:42,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:42,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:42,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:42,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:42,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:44:42,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:42,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:42,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:42,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:42,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:42,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:42,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 14:44:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:42,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:42,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:42,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:42,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 14:44:42,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:44:42,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-28 14:44:42,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:42,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:42,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:44:42,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:42,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 14:44:42,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:42,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:44:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:42,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:42,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:42,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 14:44:42,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:42,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-28 14:44:42,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:42,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:42,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:44:42,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:42,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 14:44:42,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:42,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:44:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:42,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:43,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:43,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 14:44:43,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:43,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 14:44:43,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:43,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:43,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:44:43,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:43,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 14:44:43,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:43,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 14:44:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:43,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:43,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:43,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:43,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:43,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:44:43,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:43,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:43,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:44:43,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:44:43,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:44:43,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:43,241 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-28 14:44:43,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244965334] [2020-10-28 14:44:43,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:44:43,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-28 14:44:43,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142649323] [2020-10-28 14:44:43,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 14:44:43,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:44:43,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 14:44:43,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-28 14:44:43,244 INFO L87 Difference]: Start difference. First operand 121 states and 148 transitions. Second operand 18 states. [2020-10-28 14:44:44,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:44:44,478 INFO L93 Difference]: Finished difference Result 191 states and 253 transitions. [2020-10-28 14:44:44,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 14:44:44,479 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 76 [2020-10-28 14:44:44,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:44:44,482 INFO L225 Difference]: With dead ends: 191 [2020-10-28 14:44:44,482 INFO L226 Difference]: Without dead ends: 173 [2020-10-28 14:44:44,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2020-10-28 14:44:44,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-28 14:44:44,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 159. [2020-10-28 14:44:44,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-28 14:44:44,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 200 transitions. [2020-10-28 14:44:44,504 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 200 transitions. Word has length 76 [2020-10-28 14:44:44,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:44:44,504 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 200 transitions. [2020-10-28 14:44:44,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 14:44:44,504 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 200 transitions. [2020-10-28 14:44:44,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-28 14:44:44,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:44,505 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:44,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 14:44:44,506 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:44,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:44,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1187030356, now seen corresponding path program 1 times [2020-10-28 14:44:44,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:44,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736857159] [2020-10-28 14:44:44,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:44,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:44,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:46,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:46,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 14:44:46,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:44:46,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2387 [2020-10-28 14:44:46,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:46,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:46,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-28 14:44:46,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:44:46,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 14:44:46,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:47,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:47,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:47,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:47,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:47,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:47,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:47,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:44:47,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:47,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:47,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:47,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:47,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:47,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:47,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 14:44:47,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:47,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:47,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:48,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:48,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 14:44:48,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:44:48,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 973 [2020-10-28 14:44:48,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:48,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:48,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-28 14:44:48,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:44:48,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 14:44:48,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:45:39,561 WARN L193 SmtUtils]: Spent 4.52 s on a formula simplification that was a NOOP. DAG size: 140 [2020-10-28 14:46:10,660 WARN L193 SmtUtils]: Spent 28.75 s on a formula simplification. DAG size of input: 165 DAG size of output: 160