/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_nondet_insert-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:22:08,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:22:08,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:22:08,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:22:08,771 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:22:08,777 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:22:08,779 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:22:08,783 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:22:08,787 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:22:08,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:22:08,794 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:22:08,795 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:22:08,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:22:08,797 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:22:08,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:22:08,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:22:08,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:22:08,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:22:08,814 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:22:08,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:22:08,818 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:22:08,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:22:08,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:22:08,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:22:08,828 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:22:08,828 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:22:08,829 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:22:08,830 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:22:08,830 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:22:08,831 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:22:08,831 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:22:08,832 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:22:08,833 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:22:08,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:22:08,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:22:08,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:22:08,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:22:08,836 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:22:08,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:22:08,837 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:22:08,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:22:08,839 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 [2020-10-29 09:22:08,865 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:22:08,865 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:22:08,866 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:22:08,866 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:22:08,867 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:22:08,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:22:08,867 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:22:08,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:22:08,868 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:22:08,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:22:08,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:22:08,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:22:08,868 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:22:08,868 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:22:08,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:22:08,869 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:22:08,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:22:08,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:22:08,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:22:08,870 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:22:08,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:22:08,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:22:08,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:22:08,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:22:08,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:22:08,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:22:08,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:22:08,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:22:08,871 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:22:08,872 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:22:09,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:22:09,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:22:09,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:22:09,282 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:22:09,283 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:22:09,285 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-10-29 09:22:09,366 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1df87f026/7b9309296b1042f38ec9d13244e6813c/FLAG3e3c9a74e [2020-10-29 09:22:10,024 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:22:10,025 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-10-29 09:22:10,039 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1df87f026/7b9309296b1042f38ec9d13244e6813c/FLAG3e3c9a74e [2020-10-29 09:22:10,319 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1df87f026/7b9309296b1042f38ec9d13244e6813c [2020-10-29 09:22:10,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:22:10,331 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:22:10,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:22:10,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:22:10,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:22:10,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:22:10" (1/1) ... [2020-10-29 09:22:10,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@be0f315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:22:10, skipping insertion in model container [2020-10-29 09:22:10,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:22:10" (1/1) ... [2020-10-29 09:22:10,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:22:10,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:22:10,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:22:10,791 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:22:10,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:22:10,914 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:22:10,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:22:10 WrapperNode [2020-10-29 09:22:10,915 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:22:10,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:22:10,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:22:10,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:22:10,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:22:10" (1/1) ... [2020-10-29 09:22:10,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:22:10" (1/1) ... [2020-10-29 09:22:10,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:22:10" (1/1) ... [2020-10-29 09:22:10,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:22:10" (1/1) ... [2020-10-29 09:22:11,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:22:10" (1/1) ... [2020-10-29 09:22:11,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:22:10" (1/1) ... [2020-10-29 09:22:11,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:22:10" (1/1) ... [2020-10-29 09:22:11,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:22:11,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:22:11,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:22:11,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:22:11,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:22:10" (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 [2020-10-29 09:22:11,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:22:11,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:22:11,161 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:22:11,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-29 09:22:11,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-29 09:22:11,162 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-29 09:22:11,162 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-29 09:22:11,162 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-10-29 09:22:11,162 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-10-29 09:22:11,162 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2020-10-29 09:22:11,162 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2020-10-29 09:22:11,162 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:22:11,163 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:22:11,163 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:22:11,163 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 09:22:11,163 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 09:22:11,163 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:22:11,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:22:11,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 09:22:11,164 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-29 09:22:11,164 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-29 09:22:11,164 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-29 09:22:11,164 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-29 09:22:11,164 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-29 09:22:11,164 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-29 09:22:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-29 09:22:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-29 09:22:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-29 09:22:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-29 09:22:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-29 09:22:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-29 09:22:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-29 09:22:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-29 09:22:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-29 09:22:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-29 09:22:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-29 09:22:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-29 09:22:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-29 09:22:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-29 09:22:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-29 09:22:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-29 09:22:11,167 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-29 09:22:11,167 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-29 09:22:11,167 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-29 09:22:11,167 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-29 09:22:11,167 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-29 09:22:11,167 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-29 09:22:11,167 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-29 09:22:11,168 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-29 09:22:11,168 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-29 09:22:11,168 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-29 09:22:11,168 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-29 09:22:11,168 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-29 09:22:11,168 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-29 09:22:11,168 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-29 09:22:11,169 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-29 09:22:11,169 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-29 09:22:11,169 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-29 09:22:11,169 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-29 09:22:11,169 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-29 09:22:11,169 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-29 09:22:11,169 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-29 09:22:11,170 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-29 09:22:11,170 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-29 09:22:11,170 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-29 09:22:11,170 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-29 09:22:11,170 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-29 09:22:11,170 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-29 09:22:11,170 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-29 09:22:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-29 09:22:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-29 09:22:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 09:22:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-29 09:22:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-29 09:22:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-29 09:22:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-29 09:22:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-29 09:22:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-29 09:22:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-29 09:22:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-29 09:22:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-29 09:22:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-29 09:22:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-29 09:22:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 09:22:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-29 09:22:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-29 09:22:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-29 09:22:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-29 09:22:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-29 09:22:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-29 09:22:11,174 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-29 09:22:11,174 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-29 09:22:11,174 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-29 09:22:11,174 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-29 09:22:11,174 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-29 09:22:11,174 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-29 09:22:11,174 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-29 09:22:11,174 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-29 09:22:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-29 09:22:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-29 09:22:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-29 09:22:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-29 09:22:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-29 09:22:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-29 09:22:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-29 09:22:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-29 09:22:11,176 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-29 09:22:11,176 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-29 09:22:11,176 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-29 09:22:11,176 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-29 09:22:11,176 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-29 09:22:11,176 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-29 09:22:11,176 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-29 09:22:11,176 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-29 09:22:11,176 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-29 09:22:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-29 09:22:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-29 09:22:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-29 09:22:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-29 09:22:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-29 09:22:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-29 09:22:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-29 09:22:11,178 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-29 09:22:11,178 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-29 09:22:11,178 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-29 09:22:11,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 09:22:11,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-29 09:22:11,178 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-10-29 09:22:11,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-29 09:22:11,178 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-10-29 09:22:11,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:22:11,179 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2020-10-29 09:22:11,179 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2020-10-29 09:22:11,179 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:22:11,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-29 09:22:11,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:22:11,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:22:11,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:22:11,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:22:11,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:22:11,672 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-29 09:22:11,952 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:22:11,952 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-29 09:22:11,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:22:11 BoogieIcfgContainer [2020-10-29 09:22:11,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:22:11,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:22:11,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:22:11,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:22:11,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:22:10" (1/3) ... [2020-10-29 09:22:11,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@502891b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:22:11, skipping insertion in model container [2020-10-29 09:22:11,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:22:10" (2/3) ... [2020-10-29 09:22:11,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@502891b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:22:11, skipping insertion in model container [2020-10-29 09:22:11,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:22:11" (3/3) ... [2020-10-29 09:22:11,964 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-1.i [2020-10-29 09:22:11,976 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:22:11,981 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:22:11,994 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:22:12,021 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:22:12,022 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:22:12,022 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:22:12,022 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:22:12,022 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:22:12,022 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:22:12,022 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:22:12,023 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:22:12,045 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-10-29 09:22:12,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 09:22:12,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:22:12,054 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:22:12,054 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:22:12,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:22:12,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1532112468, now seen corresponding path program 1 times [2020-10-29 09:22:12,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:22:12,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486317634] [2020-10-29 09:22:12,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:22:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:12,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:12,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:12,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:12,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:12,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:12,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 09:22:12,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:22:12,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-10-29 09:22:12,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:12,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:12,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:22:12,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 09:22:12,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:22:12,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:22:12,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:22:12,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:12,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:12,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:12,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:22:12,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:12,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 09:22:12,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:12,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:12,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:22:12,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:12,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:22:12,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:22:12,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 09:22:12,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:12,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:12,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:12,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:12,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:22:12,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:22:12,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:22:12,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:12,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:12,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:22:12,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:12,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:22:12,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:22:12,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 09:22:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:12,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:12,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:12,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:12,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:22:12,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:22:12,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:22:12,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:12,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:12,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:22:12,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 09:22:12,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:22:12,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:22:12,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 09:22:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:12,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:12,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:12,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:22:12,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:12,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:22:12,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:12,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:12,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:22:12,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 09:22:12,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:22:12,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:22:12,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 09:22:12,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:12,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:12,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:12,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:22:12,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:12,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:22:12,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:12,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:12,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:22:12,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 09:22:12,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:22:12,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:22:12,971 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 09:22:12,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486317634] [2020-10-29 09:22:12,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:22:12,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:22:12,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015158220] [2020-10-29 09:22:12,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:22:12,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:22:12,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:22:12,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:22:13,002 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 4 states. [2020-10-29 09:22:13,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:22:13,452 INFO L93 Difference]: Finished difference Result 143 states and 194 transitions. [2020-10-29 09:22:13,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 09:22:13,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-29 09:22:13,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:22:13,465 INFO L225 Difference]: With dead ends: 143 [2020-10-29 09:22:13,465 INFO L226 Difference]: Without dead ends: 60 [2020-10-29 09:22:13,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:22:13,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-29 09:22:13,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 55. [2020-10-29 09:22:13,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 09:22:13,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2020-10-29 09:22:13,521 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 39 [2020-10-29 09:22:13,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:22:13,521 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2020-10-29 09:22:13,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:22:13,522 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2020-10-29 09:22:13,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 09:22:13,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:22:13,524 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:22:13,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:22:13,530 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:22:13,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:22:13,531 INFO L82 PathProgramCache]: Analyzing trace with hash 214237475, now seen corresponding path program 1 times [2020-10-29 09:22:13,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:22:13,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674644249] [2020-10-29 09:22:13,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:22:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:13,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:13,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:13,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:13,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:14,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:14,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:18,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:18,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 09:22:18,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:22:18,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 09:22:18,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:18,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:18,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:22:18,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:22:18,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 09:22:18,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:22:18,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:22:18,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:18,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:18,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:18,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:22:18,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:18,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:22:18,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:18,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:18,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:22:18,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:18,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:22:18,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:18,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 09:22:18,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:18,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:18,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:18,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:18,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:18,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:22:18,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:22:18,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 09:22:18,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:18,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:18,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:22:18,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:22:18,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:22:18,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:18,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 09:22:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:18,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:18,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:18,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:18,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:22:18,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:22:18,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 09:22:18,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:18,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:18,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:22:18,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:18,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:22:18,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:22:18,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 09:22:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:18,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:18,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:18,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:18,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:22:18,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:22:18,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 09:22:18,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:18,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:18,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:22:18,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:22:18,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:22:18,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:19,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 09:22:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:19,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:19,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:19,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:22:19,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:19,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:22:19,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:19,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:19,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:22:19,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 09:22:19,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:22:19,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:22:19,127 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:22:19,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674644249] [2020-10-29 09:22:19,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:22:19,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:22:19,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388596430] [2020-10-29 09:22:19,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:22:19,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:22:19,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:22:19,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:22:19,135 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 12 states. [2020-10-29 09:22:19,405 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-10-29 09:22:19,617 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-29 09:22:19,787 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-10-29 09:22:20,329 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-10-29 09:22:20,488 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-29 09:22:20,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:22:20,694 INFO L93 Difference]: Finished difference Result 138 states and 169 transitions. [2020-10-29 09:22:20,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:22:20,695 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-10-29 09:22:20,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:22:20,698 INFO L225 Difference]: With dead ends: 138 [2020-10-29 09:22:20,698 INFO L226 Difference]: Without dead ends: 89 [2020-10-29 09:22:20,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2020-10-29 09:22:20,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-29 09:22:20,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 64. [2020-10-29 09:22:20,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-29 09:22:20,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2020-10-29 09:22:20,716 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 46 [2020-10-29 09:22:20,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:22:20,716 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2020-10-29 09:22:20,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:22:20,717 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2020-10-29 09:22:20,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 09:22:20,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:22:20,718 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:22:20,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:22:20,719 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:22:20,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:22:20,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1243596773, now seen corresponding path program 1 times [2020-10-29 09:22:20,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:22:20,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331551152] [2020-10-29 09:22:20,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:22:20,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:20,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:20,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:21,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:21,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:23,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:23,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 09:22:23,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:22:23,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3036 [2020-10-29 09:22:23,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:23,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:23,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:22:23,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:22:23,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 09:22:23,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:23,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:22:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:23,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:23,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:23,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:22:23,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:23,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 09:22:23,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:23,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:23,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:22:23,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:23,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:22:23,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:23,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 09:22:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:23,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:23,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:23,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:22:23,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:23,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 09:22:23,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:23,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:23,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:22:23,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:23,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:22:23,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:23,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 09:22:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:23,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:23,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:23,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:23,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:22:23,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:22:23,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 09:22:23,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:23,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:23,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:22:23,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:23,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:22:23,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:23,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 09:22:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:23,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:23,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:23,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:23,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:22:23,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:22:23,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 09:22:23,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:23,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:23,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:22:23,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:22:23,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:22:23,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:24,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 09:22:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:24,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:24,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:24,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:22:24,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:24,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:22:24,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:24,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:24,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:22:24,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 09:22:24,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:22:24,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:24,039 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:22:24,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331551152] [2020-10-29 09:22:24,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:22:24,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:22:24,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139892192] [2020-10-29 09:22:24,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:22:24,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:22:24,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:22:24,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:22:24,042 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand 11 states. [2020-10-29 09:22:24,372 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-10-29 09:22:25,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:22:25,078 INFO L93 Difference]: Finished difference Result 143 states and 184 transitions. [2020-10-29 09:22:25,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:22:25,079 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46 [2020-10-29 09:22:25,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:22:25,084 INFO L225 Difference]: With dead ends: 143 [2020-10-29 09:22:25,084 INFO L226 Difference]: Without dead ends: 106 [2020-10-29 09:22:25,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:22:25,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-29 09:22:25,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 80. [2020-10-29 09:22:25,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-29 09:22:25,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2020-10-29 09:22:25,112 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 98 transitions. Word has length 46 [2020-10-29 09:22:25,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:22:25,113 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 98 transitions. [2020-10-29 09:22:25,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:22:25,113 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 98 transitions. [2020-10-29 09:22:25,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 09:22:25,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:22:25,115 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:22:25,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:22:25,115 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:22:25,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:22:25,116 INFO L82 PathProgramCache]: Analyzing trace with hash 820894947, now seen corresponding path program 1 times [2020-10-29 09:22:25,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:22:25,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117315020] [2020-10-29 09:22:25,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:22:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:25,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:25,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:25,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:28,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:28,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 09:22:28,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:22:28,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3478 [2020-10-29 09:22:28,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:28,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:28,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:22:28,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 09:22:28,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 09:22:28,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:28,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:22:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:28,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:28,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:28,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:22:28,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:28,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:22:28,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:28,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:28,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:22:28,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:28,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:22:28,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:28,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 09:22:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:28,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:28,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:28,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:22:28,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:28,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:22:28,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:28,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:28,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:22:28,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:28,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:22:28,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:28,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 09:22:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:28,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:28,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:28,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:22:28,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:28,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:22:28,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:28,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:28,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:22:28,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:28,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:22:28,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:22:28,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 09:22:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:28,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:28,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:28,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:22:28,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:28,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 09:22:28,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:28,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:28,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:22:28,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:28,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:22:28,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:28,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 09:22:28,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:28,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:28,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:28,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:22:28,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:28,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:22:28,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:28,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:28,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:22:28,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 09:22:28,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:22:28,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:28,774 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:22:28,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117315020] [2020-10-29 09:22:28,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:22:28,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 09:22:28,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288295666] [2020-10-29 09:22:28,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:22:28,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:22:28,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:22:28,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:22:28,778 INFO L87 Difference]: Start difference. First operand 80 states and 98 transitions. Second operand 9 states. [2020-10-29 09:22:29,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:22:29,193 INFO L93 Difference]: Finished difference Result 147 states and 185 transitions. [2020-10-29 09:22:29,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:22:29,193 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2020-10-29 09:22:29,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:22:29,196 INFO L225 Difference]: With dead ends: 147 [2020-10-29 09:22:29,197 INFO L226 Difference]: Without dead ends: 103 [2020-10-29 09:22:29,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:22:29,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-29 09:22:29,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 92. [2020-10-29 09:22:29,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-29 09:22:29,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 115 transitions. [2020-10-29 09:22:29,219 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 115 transitions. Word has length 46 [2020-10-29 09:22:29,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:22:29,220 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 115 transitions. [2020-10-29 09:22:29,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:22:29,220 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 115 transitions. [2020-10-29 09:22:29,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 09:22:29,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:22:29,222 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:22:29,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:22:29,223 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:22:29,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:22:29,223 INFO L82 PathProgramCache]: Analyzing trace with hash -190222303, now seen corresponding path program 1 times [2020-10-29 09:22:29,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:22:29,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399733746] [2020-10-29 09:22:29,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:22:29,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:29,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:29,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:30,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:30,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 09:22:30,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:22:30,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 810 [2020-10-29 09:22:30,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:30,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:30,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:22:30,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 09:22:30,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 09:22:30,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:22:30,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:22:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:30,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:30,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:30,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:22:30,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:30,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:22:30,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:30,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:30,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:22:30,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:30,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:22:30,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:30,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 09:22:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:30,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:30,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:30,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:22:30,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:30,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:22:30,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:30,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:30,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:22:30,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:30,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:22:30,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:30,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 09:22:30,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:30,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:30,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:30,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:22:30,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:30,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:22:30,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:30,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:30,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:22:30,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:30,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:22:30,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:30,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 09:22:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:30,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:30,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:30,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:22:30,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:30,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 09:22:30,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:30,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:30,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:22:30,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:22:30,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:22:30,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:30,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 09:22:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:30,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:30,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:30,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:22:30,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:30,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:22:30,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:30,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:30,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:22:30,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 09:22:30,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:22:30,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:30,244 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:22:30,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399733746] [2020-10-29 09:22:30,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:22:30,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 09:22:30,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762534296] [2020-10-29 09:22:30,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:22:30,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:22:30,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:22:30,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:22:30,246 INFO L87 Difference]: Start difference. First operand 92 states and 115 transitions. Second operand 11 states. [2020-10-29 09:22:30,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:22:30,891 INFO L93 Difference]: Finished difference Result 171 states and 214 transitions. [2020-10-29 09:22:30,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:22:30,891 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46 [2020-10-29 09:22:30,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:22:30,893 INFO L225 Difference]: With dead ends: 171 [2020-10-29 09:22:30,893 INFO L226 Difference]: Without dead ends: 108 [2020-10-29 09:22:30,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:22:30,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-29 09:22:30,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 99. [2020-10-29 09:22:30,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-29 09:22:30,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 123 transitions. [2020-10-29 09:22:30,909 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 123 transitions. Word has length 46 [2020-10-29 09:22:30,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:22:30,910 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 123 transitions. [2020-10-29 09:22:30,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:22:30,910 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 123 transitions. [2020-10-29 09:22:30,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 09:22:30,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:22:30,912 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:22:30,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:22:30,912 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:22:30,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:22:30,913 INFO L82 PathProgramCache]: Analyzing trace with hash -505223327, now seen corresponding path program 1 times [2020-10-29 09:22:30,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:22:30,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625532664] [2020-10-29 09:22:30,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:22:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:30,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:30,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:31,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:31,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:31,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:32,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:32,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:32,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:32,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:32,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:32,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:35,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:35,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 09:22:35,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 09:22:35,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4045 [2020-10-29 09:22:35,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:35,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:35,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:22:35,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:22:35,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 09:22:35,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:35,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:22:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:35,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:35,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:35,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:22:35,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:35,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:22:35,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:35,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:35,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:22:35,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:35,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:22:35,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:35,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 09:22:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:35,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:35,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:35,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:35,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:35,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:35,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:35,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 09:22:35,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:22:35,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 09:22:35,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:35,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:35,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:22:35,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:22:35,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 09:22:35,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:35,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 09:22:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:35,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:35,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:35,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:35,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:22:35,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:22:35,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 09:22:35,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:35,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:35,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:22:35,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:35,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:22:35,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:35,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 09:22:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:35,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:35,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:35,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:35,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:22:35,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:22:35,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 09:22:35,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:35,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:35,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:22:35,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:22:35,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:22:35,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:35,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 09:22:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:35,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:35,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:35,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:22:35,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:35,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:22:35,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:35,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:35,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:22:35,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 09:22:35,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:22:35,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:35,410 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:22:35,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625532664] [2020-10-29 09:22:35,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:22:35,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:22:35,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470266539] [2020-10-29 09:22:35,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:22:35,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:22:35,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:22:35,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:22:35,415 INFO L87 Difference]: Start difference. First operand 99 states and 123 transitions. Second operand 13 states. [2020-10-29 09:22:36,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:22:36,616 INFO L93 Difference]: Finished difference Result 203 states and 257 transitions. [2020-10-29 09:22:36,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 09:22:36,617 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2020-10-29 09:22:36,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:22:36,619 INFO L225 Difference]: With dead ends: 203 [2020-10-29 09:22:36,619 INFO L226 Difference]: Without dead ends: 117 [2020-10-29 09:22:36,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2020-10-29 09:22:36,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-29 09:22:36,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 101. [2020-10-29 09:22:36,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-29 09:22:36,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 125 transitions. [2020-10-29 09:22:36,650 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 125 transitions. Word has length 49 [2020-10-29 09:22:36,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:22:36,651 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 125 transitions. [2020-10-29 09:22:36,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:22:36,651 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 125 transitions. [2020-10-29 09:22:36,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 09:22:36,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:22:36,661 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:22:36,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:22:36,661 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:22:36,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:22:36,662 INFO L82 PathProgramCache]: Analyzing trace with hash 524135971, now seen corresponding path program 2 times [2020-10-29 09:22:36,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:22:36,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832368877] [2020-10-29 09:22:36,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:22:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:36,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:36,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:36,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:37,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:37,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 09:22:37,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:22:37,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1030 [2020-10-29 09:22:37,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:37,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:37,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:22:37,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:22:37,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 09:22:37,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:37,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:22:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:37,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:37,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:37,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:22:37,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:37,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:22:37,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:37,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:37,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:22:37,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:37,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:22:37,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:37,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 09:22:37,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:37,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:37,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:37,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 09:22:37,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:37,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 09:22:37,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:37,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:37,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:22:37,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:37,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 09:22:37,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:37,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 09:22:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:37,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:37,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:37,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:37,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:22:37,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:22:37,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:22:37,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:37,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:37,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:22:37,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:37,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:22:37,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:37,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 09:22:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:37,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:37,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:37,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:37,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:22:37,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:22:37,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 09:22:37,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:37,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:37,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:22:37,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:22:37,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:22:37,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:37,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 09:22:37,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:37,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:37,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:37,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:22:37,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:37,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:22:37,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:37,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:37,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:22:37,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 09:22:37,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:22:37,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:22:37,983 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:22:37,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832368877] [2020-10-29 09:22:37,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:22:37,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:22:37,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567948550] [2020-10-29 09:22:37,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:22:37,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:22:37,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:22:37,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:22:37,986 INFO L87 Difference]: Start difference. First operand 101 states and 125 transitions. Second operand 12 states. [2020-10-29 09:22:39,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:22:39,032 INFO L93 Difference]: Finished difference Result 175 states and 218 transitions. [2020-10-29 09:22:39,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 09:22:39,032 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2020-10-29 09:22:39,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:22:39,034 INFO L225 Difference]: With dead ends: 175 [2020-10-29 09:22:39,034 INFO L226 Difference]: Without dead ends: 113 [2020-10-29 09:22:39,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2020-10-29 09:22:39,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-29 09:22:39,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 85. [2020-10-29 09:22:39,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-29 09:22:39,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 101 transitions. [2020-10-29 09:22:39,051 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 101 transitions. Word has length 49 [2020-10-29 09:22:39,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:22:39,052 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 101 transitions. [2020-10-29 09:22:39,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:22:39,052 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 101 transitions. [2020-10-29 09:22:39,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 09:22:39,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:22:39,053 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:22:39,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 09:22:39,053 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:22:39,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:22:39,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1066812936, now seen corresponding path program 1 times [2020-10-29 09:22:39,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:22:39,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491680428] [2020-10-29 09:22:39,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:22:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:39,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:39,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:39,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:39,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:44,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:44,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 09:22:44,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:22:44,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 09:22:44,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:44,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:44,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:22:44,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-29 09:22:44,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 09:22:44,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:22:44,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:22:44,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:44,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:44,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:44,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:22:44,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:44,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:22:44,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:44,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:44,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:22:44,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:44,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:22:44,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:44,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 09:22:44,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:44,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:44,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:44,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:22:44,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:44,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:22:44,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:44,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:44,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:22:44,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:44,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:22:44,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:44,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 09:22:44,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:44,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:44,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:44,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:44,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 09:22:44,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:22:44,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 09:22:44,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:44,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:44,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:22:44,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:44,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 09:22:44,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:44,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 09:22:44,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:44,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:44,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:44,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:22:44,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:44,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:22:44,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:44,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:44,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:22:44,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:44,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:22:44,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:44,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 09:22:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:44,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:44,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:44,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:22:44,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:44,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:22:44,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:44,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:44,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:22:44,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:22:44,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:22:44,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:44,361 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 09:22:44,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491680428] [2020-10-29 09:22:44,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:22:44,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-29 09:22:44,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130854126] [2020-10-29 09:22:44,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:22:44,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:22:44,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:22:44,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:22:44,368 INFO L87 Difference]: Start difference. First operand 85 states and 101 transitions. Second operand 12 states. [2020-10-29 09:22:44,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:22:44,893 INFO L93 Difference]: Finished difference Result 109 states and 133 transitions. [2020-10-29 09:22:44,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:22:44,894 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2020-10-29 09:22:44,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:22:44,895 INFO L225 Difference]: With dead ends: 109 [2020-10-29 09:22:44,895 INFO L226 Difference]: Without dead ends: 103 [2020-10-29 09:22:44,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:22:44,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-29 09:22:44,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 95. [2020-10-29 09:22:44,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-29 09:22:44,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 115 transitions. [2020-10-29 09:22:44,915 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 115 transitions. Word has length 50 [2020-10-29 09:22:44,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:22:44,916 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 115 transitions. [2020-10-29 09:22:44,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:22:44,916 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 115 transitions. [2020-10-29 09:22:44,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 09:22:44,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:22:44,918 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:22:44,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 09:22:44,919 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:22:44,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:22:44,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1706223967, now seen corresponding path program 1 times [2020-10-29 09:22:44,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:22:44,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611797800] [2020-10-29 09:22:44,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:22:44,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:44,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:44,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:45,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:46,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:46,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 09:22:46,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:22:46,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1971 [2020-10-29 09:22:46,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:46,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:46,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 09:22:46,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 09:22:46,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 09:22:46,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:47,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:22:47,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:47,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:47,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:47,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:22:47,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:47,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:22:47,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:47,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:47,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:22:47,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:47,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:22:47,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:47,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 09:22:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:47,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:47,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:47,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:22:47,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:47,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:22:47,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:47,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:47,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:22:47,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:47,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:22:47,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:47,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 09:22:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:47,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:47,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:47,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 09:22:47,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:47,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 09:22:47,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:47,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:47,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:22:47,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:47,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 09:22:47,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 09:22:47,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 09:22:47,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:47,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:47,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:47,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:47,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:22:47,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:22:47,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 09:22:47,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:47,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:47,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:22:47,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:22:47,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:22:47,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:47,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 09:22:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:47,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:47,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:47,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:22:47,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:47,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:22:47,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:47,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:47,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:22:47,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:47,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:22:47,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:47,423 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:22:47,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611797800] [2020-10-29 09:22:47,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:22:47,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 09:22:47,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540501932] [2020-10-29 09:22:47,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 09:22:47,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:22:47,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 09:22:47,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:22:47,425 INFO L87 Difference]: Start difference. First operand 95 states and 115 transitions. Second operand 19 states. [2020-10-29 09:22:48,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:22:48,435 INFO L93 Difference]: Finished difference Result 175 states and 215 transitions. [2020-10-29 09:22:48,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 09:22:48,436 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 51 [2020-10-29 09:22:48,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:22:48,438 INFO L225 Difference]: With dead ends: 175 [2020-10-29 09:22:48,438 INFO L226 Difference]: Without dead ends: 107 [2020-10-29 09:22:48,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=106, Invalid=706, Unknown=0, NotChecked=0, Total=812 [2020-10-29 09:22:48,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-29 09:22:48,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 99. [2020-10-29 09:22:48,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-29 09:22:48,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 119 transitions. [2020-10-29 09:22:48,451 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 119 transitions. Word has length 51 [2020-10-29 09:22:48,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:22:48,452 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 119 transitions. [2020-10-29 09:22:48,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 09:22:48,452 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 119 transitions. [2020-10-29 09:22:48,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 09:22:48,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:22:48,453 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:22:48,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 09:22:48,453 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:22:48,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:22:48,454 INFO L82 PathProgramCache]: Analyzing trace with hash 280144856, now seen corresponding path program 2 times [2020-10-29 09:22:48,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:22:48,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349950129] [2020-10-29 09:22:48,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:22:48,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:48,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:48,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:48,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:48,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 09:22:48,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:22:48,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-10-29 09:22:48,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:48,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:48,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:22:48,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-29 09:22:48,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 09:22:48,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:48,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:22:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:48,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:48,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:48,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:22:48,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:48,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:22:48,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:48,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:48,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:22:48,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:48,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:22:48,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:22:48,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 09:22:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:48,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:48,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:48,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:22:48,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:48,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:22:48,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:48,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:48,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:22:48,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:48,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:22:48,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:49,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 09:22:49,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:49,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:49,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:49,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:49,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:22:49,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:22:49,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-29 09:22:49,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:49,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:49,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:22:49,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:49,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 09:22:49,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:22:49,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 09:22:49,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:49,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:49,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:49,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:22:49,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:49,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:22:49,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:49,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:49,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:22:49,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:49,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:22:49,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:49,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 09:22:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:49,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:49,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:49,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:22:49,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:49,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:22:49,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:49,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:49,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:22:49,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:22:49,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:22:49,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:49,296 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 09:22:49,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349950129] [2020-10-29 09:22:49,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:22:49,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 09:22:49,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997370948] [2020-10-29 09:22:49,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 09:22:49,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:22:49,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 09:22:49,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:22:49,299 INFO L87 Difference]: Start difference. First operand 99 states and 119 transitions. Second operand 14 states. [2020-10-29 09:22:50,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:22:50,129 INFO L93 Difference]: Finished difference Result 117 states and 142 transitions. [2020-10-29 09:22:50,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 09:22:50,130 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 55 [2020-10-29 09:22:50,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:22:50,132 INFO L225 Difference]: With dead ends: 117 [2020-10-29 09:22:50,132 INFO L226 Difference]: Without dead ends: 111 [2020-10-29 09:22:50,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2020-10-29 09:22:50,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-29 09:22:50,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 100. [2020-10-29 09:22:50,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-29 09:22:50,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 121 transitions. [2020-10-29 09:22:50,143 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 121 transitions. Word has length 55 [2020-10-29 09:22:50,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:22:50,144 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 121 transitions. [2020-10-29 09:22:50,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 09:22:50,144 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 121 transitions. [2020-10-29 09:22:50,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 09:22:50,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:22:50,145 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:22:50,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 09:22:50,145 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:22:50,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:22:50,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1205650033, now seen corresponding path program 3 times [2020-10-29 09:22:50,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:22:50,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662406011] [2020-10-29 09:22:50,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:22:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:50,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:50,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:50,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:53,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:53,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 09:22:53,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:22:53,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3230 [2020-10-29 09:22:53,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:53,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:53,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 09:22:53,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:22:53,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 09:22:53,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:53,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:22:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:53,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:53,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:53,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:22:53,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:53,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:22:53,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:53,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:53,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:22:53,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:53,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:22:53,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:53,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 09:22:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:53,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:53,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:53,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:22:53,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:53,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:22:53,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:53,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:53,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:22:53,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:53,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:22:53,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:53,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 09:22:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:53,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:53,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:53,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:53,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:22:53,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:22:53,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 09:22:53,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:53,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:53,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:22:53,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:53,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:22:53,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:53,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 09:22:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:53,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:53,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:53,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:22:53,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:53,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 09:22:53,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:53,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:53,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:22:53,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:53,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:22:53,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:53,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 09:22:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:53,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:53,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:53,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:22:53,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:53,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 09:22:53,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:53,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:53,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:22:53,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:53,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:22:53,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:53,837 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-29 09:22:53,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662406011] [2020-10-29 09:22:53,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:22:53,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 09:22:53,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612871034] [2020-10-29 09:22:53,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 09:22:53,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:22:53,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 09:22:53,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:22:53,839 INFO L87 Difference]: Start difference. First operand 100 states and 121 transitions. Second operand 16 states. [2020-10-29 09:22:54,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:22:54,816 INFO L93 Difference]: Finished difference Result 153 states and 196 transitions. [2020-10-29 09:22:54,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 09:22:54,816 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 56 [2020-10-29 09:22:54,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:22:54,818 INFO L225 Difference]: With dead ends: 153 [2020-10-29 09:22:54,818 INFO L226 Difference]: Without dead ends: 147 [2020-10-29 09:22:54,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2020-10-29 09:22:54,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-29 09:22:54,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 117. [2020-10-29 09:22:54,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-29 09:22:54,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 144 transitions. [2020-10-29 09:22:54,835 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 144 transitions. Word has length 56 [2020-10-29 09:22:54,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:22:54,835 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 144 transitions. [2020-10-29 09:22:54,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 09:22:54,835 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 144 transitions. [2020-10-29 09:22:54,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 09:22:54,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:22:54,837 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:22:54,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 09:22:54,837 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:22:54,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:22:54,838 INFO L82 PathProgramCache]: Analyzing trace with hash -20651336, now seen corresponding path program 4 times [2020-10-29 09:22:54,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:22:54,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221628631] [2020-10-29 09:22:54,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:22:54,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:54,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:54,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:55,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:55,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 09:22:55,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:22:55,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 667 [2020-10-29 09:22:55,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:55,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:55,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:22:55,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 09:22:55,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 09:22:55,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:22:55,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:22:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:55,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:55,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:55,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:22:55,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:55,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:22:55,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:55,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:55,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:22:55,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:55,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:22:55,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:55,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 09:22:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:55,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:55,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:55,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:22:55,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:55,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:22:55,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:55,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:55,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:22:55,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:55,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:22:55,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:55,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 09:22:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:55,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:55,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:55,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:22:55,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:55,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 09:22:55,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:55,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:55,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:22:55,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:55,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 09:22:55,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:55,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 09:22:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:55,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:55,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:55,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:22:55,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:55,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 09:22:55,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:55,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:55,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:22:55,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:55,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:22:55,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:55,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 09:22:55,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:55,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:55,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:55,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 09:22:55,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:55,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 09:22:55,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:55,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:55,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:22:55,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:22:55,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:22:55,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:56,275 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 09:22:56,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221628631] [2020-10-29 09:22:56,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:22:56,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 09:22:56,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279602872] [2020-10-29 09:22:56,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 09:22:56,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:22:56,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 09:22:56,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:22:56,277 INFO L87 Difference]: Start difference. First operand 117 states and 144 transitions. Second operand 16 states. [2020-10-29 09:22:57,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:22:57,635 INFO L93 Difference]: Finished difference Result 165 states and 211 transitions. [2020-10-29 09:22:57,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 09:22:57,637 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 57 [2020-10-29 09:22:57,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:22:57,639 INFO L225 Difference]: With dead ends: 165 [2020-10-29 09:22:57,639 INFO L226 Difference]: Without dead ends: 159 [2020-10-29 09:22:57,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2020-10-29 09:22:57,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-29 09:22:57,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 148. [2020-10-29 09:22:57,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-29 09:22:57,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 189 transitions. [2020-10-29 09:22:57,658 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 189 transitions. Word has length 57 [2020-10-29 09:22:57,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:22:57,658 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 189 transitions. [2020-10-29 09:22:57,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 09:22:57,658 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 189 transitions. [2020-10-29 09:22:57,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 09:22:57,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:22:57,660 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:22:57,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 09:22:57,660 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:22:57,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:22:57,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1940397393, now seen corresponding path program 5 times [2020-10-29 09:22:57,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:22:57,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332281242] [2020-10-29 09:22:57,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:22:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:57,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:57,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:58,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:58,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 09:22:58,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:22:58,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 737 [2020-10-29 09:22:58,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:58,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:58,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:22:58,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 09:22:58,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 09:22:58,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:58,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:22:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:58,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:58,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:58,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:22:58,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:58,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:22:58,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:58,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:58,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:22:58,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:58,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:22:58,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:58,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 09:22:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:58,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:58,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:58,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:22:58,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:58,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:22:58,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:58,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:58,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:22:58,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:58,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:22:58,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:58,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 09:22:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:58,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:58,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:58,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:22:58,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:58,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 09:22:58,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:58,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:58,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:22:58,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:58,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 09:22:58,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:58,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 09:22:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:58,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:58,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:58,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:22:58,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:58,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:22:58,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:58,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:58,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:22:58,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:22:58,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:22:58,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:58,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 09:22:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:22:58,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:22:58,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:22:58,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 09:22:58,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:22:58,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 09:22:58,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:22:58,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:22:58,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:22:58,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:22:58,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 09:22:58,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:22:58,891 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 09:22:58,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332281242] [2020-10-29 09:22:58,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:22:58,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 09:22:58,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803873659] [2020-10-29 09:22:58,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 09:22:58,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:22:58,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 09:22:58,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:22:58,895 INFO L87 Difference]: Start difference. First operand 148 states and 189 transitions. Second operand 17 states. [2020-10-29 09:23:00,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:23:00,174 INFO L93 Difference]: Finished difference Result 165 states and 209 transitions. [2020-10-29 09:23:00,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 09:23:00,174 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-10-29 09:23:00,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:23:00,176 INFO L225 Difference]: With dead ends: 165 [2020-10-29 09:23:00,176 INFO L226 Difference]: Without dead ends: 153 [2020-10-29 09:23:00,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2020-10-29 09:23:00,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-29 09:23:00,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 138. [2020-10-29 09:23:00,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-29 09:23:00,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 173 transitions. [2020-10-29 09:23:00,193 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 173 transitions. Word has length 58 [2020-10-29 09:23:00,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:23:00,194 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 173 transitions. [2020-10-29 09:23:00,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 09:23:00,194 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 173 transitions. [2020-10-29 09:23:00,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 09:23:00,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:23:00,195 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:23:00,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 09:23:00,196 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:23:00,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:23:00,196 INFO L82 PathProgramCache]: Analyzing trace with hash -716872415, now seen corresponding path program 1 times [2020-10-29 09:23:00,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:23:00,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136509371] [2020-10-29 09:23:00,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:23:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:23:00,213 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:23:00,213 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:23:00,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 09:23:00,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:23:00 BoogieIcfgContainer [2020-10-29 09:23:00,237 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:23:00,239 INFO L168 Benchmark]: Toolchain (without parser) took 49913.33 ms. Allocated memory was 159.4 MB in the beginning and 506.5 MB in the end (delta: 347.1 MB). Free memory was 132.8 MB in the beginning and 460.7 MB in the end (delta: -327.9 MB). Peak memory consumption was 20.8 MB. Max. memory is 8.0 GB. [2020-10-29 09:23:00,240 INFO L168 Benchmark]: CDTParser took 1.43 ms. Allocated memory is still 159.4 MB. Free memory is still 131.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:23:00,240 INFO L168 Benchmark]: CACSL2BoogieTranslator took 580.76 ms. Allocated memory is still 159.4 MB. Free memory was 132.2 MB in the beginning and 108.9 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:23:00,241 INFO L168 Benchmark]: Boogie Preprocessor took 132.24 ms. Allocated memory is still 159.4 MB. Free memory was 108.9 MB in the beginning and 106.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:23:00,241 INFO L168 Benchmark]: RCFGBuilder took 905.32 ms. Allocated memory is still 159.4 MB. Free memory was 106.0 MB in the beginning and 93.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 14.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:23:00,242 INFO L168 Benchmark]: TraceAbstraction took 48281.19 ms. Allocated memory was 159.4 MB in the beginning and 506.5 MB in the end (delta: 347.1 MB). Free memory was 92.5 MB in the beginning and 460.7 MB in the end (delta: -368.1 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:23:00,244 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.43 ms. Allocated memory is still 159.4 MB. Free memory is still 131.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 580.76 ms. Allocated memory is still 159.4 MB. Free memory was 132.2 MB in the beginning and 108.9 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 132.24 ms. Allocated memory is still 159.4 MB. Free memory was 108.9 MB in the beginning and 106.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 905.32 ms. Allocated memory is still 159.4 MB. Free memory was 106.0 MB in the beginning and 93.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 14.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 48281.19 ms. Allocated memory was 159.4 MB in the beginning and 506.5 MB in the end (delta: 347.1 MB). Free memory was 92.5 MB in the beginning and 460.7 MB in the end (delta: -368.1 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L627] CALL, EXPR _get_nondet_int(2, 5) [L620] int len = from; [L621] len < until && __VERIFIER_nondet_int() [L621] len < until && __VERIFIER_nondet_int() [L621] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L624] return len; [L627] RET, EXPR _get_nondet_int(2, 5) [L627] const int len = _get_nondet_int(2, 5); [L628] SLL s = sll_create(len); [L628] CALL, EXPR sll_create(len) [L575] SLL head = ((void *)0); [L576] EXPR len-- [L576] COND TRUE len-- > 0 [L577] SLL new_head = (SLL) malloc(sizeof(struct node)); [L578] COND FALSE !(((void *)0) == new_head) [L581] new_head->next = head [L582] head = new_head [L576] EXPR len-- [L576] COND TRUE len-- > 0 [L577] SLL new_head = (SLL) malloc(sizeof(struct node)); [L578] COND FALSE !(((void *)0) == new_head) [L581] new_head->next = head [L582] head = new_head [L576] EXPR len-- [L576] COND FALSE !(len-- > 0) [L584] return head; [L628] RET, EXPR sll_create(len) [L628] SLL s = sll_create(len); [L629] CALL, EXPR _get_nondet_int(0, len - 1) [L620] int len = from; [L621] len < until && __VERIFIER_nondet_int() [L621] len < until && __VERIFIER_nondet_int() [L621] COND TRUE len < until && __VERIFIER_nondet_int() [L622] len++ [L621] len < until && __VERIFIER_nondet_int() [L621] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L624] return len; [L629] RET, EXPR _get_nondet_int(0, len - 1) [L629] const int k = _get_nondet_int(0, len - 1); [L630] int i = 0; [L631] i < k && __VERIFIER_nondet_int() [L631] i < k && __VERIFIER_nondet_int() [L631] COND FALSE !(i < k && __VERIFIER_nondet_int()) [L636] EXPR \read(s) [L636] CALL, EXPR sll_length(s) [L587] int len = 0; [L588] COND TRUE \read(head) [L589] len++ [L590] EXPR head->next [L590] head = head->next [L588] COND TRUE \read(head) [L589] len++ [L590] EXPR head->next [L590] head = head->next [L588] COND FALSE !(\read(head)) [L592] return len; [L636] RET, EXPR sll_length(s) [L636] COND TRUE k + len != sll_length(s) [L641] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "sll_nondet_insert-1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 48.1s, OverallIterations: 14, TraceHistogramMax: 4, AutomataDifference: 12.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 775 SDtfs, 1178 SDslu, 3895 SDs, 0 SdLazy, 5274 SolverSat, 514 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 376 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 8.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=148occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 203 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 34.8s InterpolantComputationTime, 707 NumberOfCodeBlocks, 707 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 635 ConstructedInterpolants, 0 QuantifiedInterpolants, 265378 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 91/158 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...