/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 23:08:07,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 23:08:07,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 23:08:07,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 23:08:07,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 23:08:07,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 23:08:07,311 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 23:08:07,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 23:08:07,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 23:08:07,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 23:08:07,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 23:08:07,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 23:08:07,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 23:08:07,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 23:08:07,340 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 23:08:07,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 23:08:07,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 23:08:07,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 23:08:07,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 23:08:07,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 23:08:07,368 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 23:08:07,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 23:08:07,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 23:08:07,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 23:08:07,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 23:08:07,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 23:08:07,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 23:08:07,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 23:08:07,402 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 23:08:07,430 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 23:08:07,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 23:08:07,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 23:08:07,436 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 23:08:07,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 23:08:07,436 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 23:08:07,437 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 23:08:07,437 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 23:08:07,437 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 23:08:07,437 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 23:08:07,439 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 23:08:07,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 23:08:07,440 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 23:08:07,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 23:08:07,441 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 23:08:07,441 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 23:08:07,441 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 23:08:07,442 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 23:08:07,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 23:08:07,442 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 23:08:07,443 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 23:08:07,443 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 23:08:07,443 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 23:08:07,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 23:08:07,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 23:08:07,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 23:08:07,946 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 23:08:07,947 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 23:08:07,948 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2021-02-23 23:08:08,038 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0955bb2e7/71503662f2c643e08375d4affd1dd60d/FLAG0abe18b5f [2021-02-23 23:08:08,939 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 23:08:08,940 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2021-02-23 23:08:08,971 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0955bb2e7/71503662f2c643e08375d4affd1dd60d/FLAG0abe18b5f [2021-02-23 23:08:09,152 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0955bb2e7/71503662f2c643e08375d4affd1dd60d [2021-02-23 23:08:09,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 23:08:09,171 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 23:08:09,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 23:08:09,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 23:08:09,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 23:08:09,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:08:09" (1/1) ... [2021-02-23 23:08:09,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48470a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:09, skipping insertion in model container [2021-02-23 23:08:09,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:08:09" (1/1) ... [2021-02-23 23:08:09,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 23:08:09,235 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 23:08:09,599 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i[22665,22678] [2021-02-23 23:08:09,606 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i[22735,22748] [2021-02-23 23:08:09,607 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i[22799,22812] [2021-02-23 23:08:09,609 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i[22894,22907] [2021-02-23 23:08:09,610 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i[22966,22979] [2021-02-23 23:08:09,613 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i[23105,23118] [2021-02-23 23:08:09,616 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i[23179,23192] [2021-02-23 23:08:09,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:08:09,644 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 23:08:09,704 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i[22665,22678] [2021-02-23 23:08:09,705 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i[22735,22748] [2021-02-23 23:08:09,706 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i[22799,22812] [2021-02-23 23:08:09,707 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i[22894,22907] [2021-02-23 23:08:09,708 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i[22966,22979] [2021-02-23 23:08:09,710 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i[23105,23118] [2021-02-23 23:08:09,711 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i[23179,23192] [2021-02-23 23:08:09,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:08:09,774 INFO L208 MainTranslator]: Completed translation [2021-02-23 23:08:09,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:09 WrapperNode [2021-02-23 23:08:09,775 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 23:08:09,776 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 23:08:09,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 23:08:09,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 23:08:09,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:09" (1/1) ... [2021-02-23 23:08:09,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:09" (1/1) ... [2021-02-23 23:08:09,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:09" (1/1) ... [2021-02-23 23:08:09,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:09" (1/1) ... [2021-02-23 23:08:09,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:09" (1/1) ... [2021-02-23 23:08:09,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:09" (1/1) ... [2021-02-23 23:08:09,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:09" (1/1) ... [2021-02-23 23:08:09,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 23:08:09,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 23:08:09,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 23:08:09,934 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 23:08:09,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2021-02-23 23:08:10,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 23:08:10,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 23:08:10,030 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 23:08:10,030 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 23:08:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-23 23:08:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-23 23:08:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-23 23:08:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-23 23:08:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-23 23:08:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-23 23:08:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-23 23:08:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-23 23:08:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-23 23:08:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-23 23:08:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-23 23:08:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-23 23:08:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-23 23:08:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-23 23:08:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-23 23:08:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-23 23:08:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-23 23:08:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-23 23:08:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-23 23:08:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-23 23:08:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-23 23:08:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-23 23:08:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-23 23:08:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-23 23:08:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-23 23:08:10,035 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-23 23:08:10,035 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-23 23:08:10,035 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-23 23:08:10,035 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-23 23:08:10,035 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-23 23:08:10,035 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-23 23:08:10,036 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-23 23:08:10,036 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-23 23:08:10,036 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-23 23:08:10,036 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-23 23:08:10,036 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-23 23:08:10,036 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-23 23:08:10,036 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-23 23:08:10,037 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-23 23:08:10,037 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-23 23:08:10,037 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-23 23:08:10,037 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-23 23:08:10,037 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-23 23:08:10,037 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-23 23:08:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-23 23:08:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-23 23:08:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-23 23:08:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-23 23:08:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-23 23:08:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-23 23:08:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 23:08:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-23 23:08:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-23 23:08:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 23:08:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-23 23:08:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-23 23:08:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-23 23:08:10,040 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-23 23:08:10,040 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-23 23:08:10,040 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 23:08:10,040 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-23 23:08:10,040 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-23 23:08:10,040 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-23 23:08:10,041 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-23 23:08:10,041 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-23 23:08:10,041 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-23 23:08:10,041 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-23 23:08:10,041 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-23 23:08:10,041 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-23 23:08:10,042 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-23 23:08:10,042 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-23 23:08:10,042 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-23 23:08:10,042 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-23 23:08:10,042 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-23 23:08:10,042 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-23 23:08:10,042 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-23 23:08:10,043 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-23 23:08:10,043 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-23 23:08:10,043 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-23 23:08:10,043 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-23 23:08:10,043 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-23 23:08:10,043 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-23 23:08:10,043 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-23 23:08:10,044 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-23 23:08:10,044 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-23 23:08:10,044 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-23 23:08:10,044 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-23 23:08:10,044 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-23 23:08:10,044 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-23 23:08:10,044 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-23 23:08:10,045 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-23 23:08:10,045 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-23 23:08:10,045 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-23 23:08:10,045 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-23 23:08:10,045 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-23 23:08:10,045 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-23 23:08:10,045 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-23 23:08:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-23 23:08:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-23 23:08:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-23 23:08:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-23 23:08:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-23 23:08:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-23 23:08:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 23:08:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 23:08:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 23:08:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 23:08:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 23:08:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 23:08:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 23:08:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 23:08:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 23:08:10,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 23:08:10,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 23:08:10,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 23:08:10,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 23:08:10,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 23:08:10,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 23:08:10,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 23:08:10,802 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 23:08:10,802 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-02-23 23:08:10,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:08:10 BoogieIcfgContainer [2021-02-23 23:08:10,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 23:08:10,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 23:08:10,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 23:08:10,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 23:08:10,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 11:08:09" (1/3) ... [2021-02-23 23:08:10,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548d7dcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:08:10, skipping insertion in model container [2021-02-23 23:08:10,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:09" (2/3) ... [2021-02-23 23:08:10,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548d7dcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:08:10, skipping insertion in model container [2021-02-23 23:08:10,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:08:10" (3/3) ... [2021-02-23 23:08:10,828 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2021-02-23 23:08:10,845 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 23:08:10,852 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2021-02-23 23:08:10,876 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-02-23 23:08:10,920 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 23:08:10,921 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 23:08:10,921 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 23:08:10,921 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 23:08:10,922 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 23:08:10,922 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 23:08:10,922 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 23:08:10,922 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 23:08:10,953 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states. [2021-02-23 23:08:10,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-23 23:08:10,968 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:10,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:10,970 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:10,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:10,981 INFO L82 PathProgramCache]: Analyzing trace with hash 525799114, now seen corresponding path program 1 times [2021-02-23 23:08:10,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:10,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443895815] [2021-02-23 23:08:10,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:11,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:11,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:11,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:11,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:11,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:11,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:11,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:11,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:11,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:11,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443895815] [2021-02-23 23:08:11,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:11,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 23:08:11,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421810405] [2021-02-23 23:08:11,481 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 23:08:11,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:11,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 23:08:11,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 23:08:11,508 INFO L87 Difference]: Start difference. First operand 134 states. Second operand 3 states. [2021-02-23 23:08:11,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:11,884 INFO L93 Difference]: Finished difference Result 239 states and 297 transitions. [2021-02-23 23:08:11,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 23:08:11,887 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2021-02-23 23:08:11,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:11,898 INFO L225 Difference]: With dead ends: 239 [2021-02-23 23:08:11,899 INFO L226 Difference]: Without dead ends: 104 [2021-02-23 23:08:11,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 23:08:11,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-02-23 23:08:11,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-02-23 23:08:11,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2021-02-23 23:08:11,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 107 transitions. [2021-02-23 23:08:11,960 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 107 transitions. Word has length 27 [2021-02-23 23:08:11,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:11,961 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 107 transitions. [2021-02-23 23:08:11,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 23:08:11,961 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 107 transitions. [2021-02-23 23:08:11,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-02-23 23:08:11,963 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:11,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:11,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 23:08:11,964 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:11,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:11,964 INFO L82 PathProgramCache]: Analyzing trace with hash -2078116216, now seen corresponding path program 1 times [2021-02-23 23:08:11,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:11,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940859294] [2021-02-23 23:08:11,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:11,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:12,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:12,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:12,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:12,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:08:12,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:12,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:08:12,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:12,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:08:12,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:12,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:08:12,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:12,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:08:12,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:12,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:12,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:12,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:12,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:12,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:12,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:12,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940859294] [2021-02-23 23:08:12,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:12,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 23:08:12,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301473305] [2021-02-23 23:08:12,115 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 23:08:12,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:12,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 23:08:12,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-02-23 23:08:12,116 INFO L87 Difference]: Start difference. First operand 104 states and 107 transitions. Second operand 8 states. [2021-02-23 23:08:12,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:12,507 INFO L93 Difference]: Finished difference Result 125 states and 130 transitions. [2021-02-23 23:08:12,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-23 23:08:12,507 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2021-02-23 23:08:12,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:12,509 INFO L225 Difference]: With dead ends: 125 [2021-02-23 23:08:12,510 INFO L226 Difference]: Without dead ends: 123 [2021-02-23 23:08:12,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-02-23 23:08:12,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-02-23 23:08:12,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 102. [2021-02-23 23:08:12,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2021-02-23 23:08:12,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 105 transitions. [2021-02-23 23:08:12,533 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 105 transitions. Word has length 29 [2021-02-23 23:08:12,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:12,533 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 105 transitions. [2021-02-23 23:08:12,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 23:08:12,534 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 105 transitions. [2021-02-23 23:08:12,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-23 23:08:12,535 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:12,535 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:12,535 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 23:08:12,536 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:12,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:12,536 INFO L82 PathProgramCache]: Analyzing trace with hash 850803823, now seen corresponding path program 1 times [2021-02-23 23:08:12,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:12,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141831337] [2021-02-23 23:08:12,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:12,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:12,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:12,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:12,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:08:12,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:12,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:08:12,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:12,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:08:12,747 WARN L141 QuantifierPusher]: treesize reduction 17, result has 52.8 percent of original size [2021-02-23 23:08:12,748 WARN L147 QuantifierPusher]: treesize reduction 17, result has 52.8 percent of original size 19 [2021-02-23 23:08:12,778 WARN L141 QuantifierPusher]: treesize reduction 17, result has 63.0 percent of original size [2021-02-23 23:08:12,779 WARN L147 QuantifierPusher]: treesize reduction 17, result has 63.0 percent of original size 29 [2021-02-23 23:08:12,815 WARN L141 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-02-23 23:08:12,816 WARN L147 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size 25 [2021-02-23 23:08:12,845 WARN L141 QuantifierPusher]: treesize reduction 14, result has 39.1 percent of original size [2021-02-23 23:08:12,846 WARN L147 QuantifierPusher]: treesize reduction 14, result has 39.1 percent of original size 9 [2021-02-23 23:08:12,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:12,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:08:12,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:12,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:12,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:12,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:12,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:12,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:12,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:12,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141831337] [2021-02-23 23:08:12,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:12,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-23 23:08:12,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575133172] [2021-02-23 23:08:12,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 23:08:12,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:12,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 23:08:12,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-02-23 23:08:12,910 INFO L87 Difference]: Start difference. First operand 102 states and 105 transitions. Second operand 11 states. [2021-02-23 23:08:13,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:13,433 INFO L93 Difference]: Finished difference Result 152 states and 158 transitions. [2021-02-23 23:08:13,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-23 23:08:13,433 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2021-02-23 23:08:13,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:13,435 INFO L225 Difference]: With dead ends: 152 [2021-02-23 23:08:13,436 INFO L226 Difference]: Without dead ends: 149 [2021-02-23 23:08:13,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2021-02-23 23:08:13,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-02-23 23:08:13,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 111. [2021-02-23 23:08:13,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2021-02-23 23:08:13,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2021-02-23 23:08:13,461 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 33 [2021-02-23 23:08:13,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:13,461 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2021-02-23 23:08:13,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 23:08:13,462 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2021-02-23 23:08:13,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-23 23:08:13,463 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:13,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:13,464 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 23:08:13,464 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:13,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:13,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1110552932, now seen corresponding path program 1 times [2021-02-23 23:08:13,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:13,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194332287] [2021-02-23 23:08:13,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:13,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:13,574 WARN L141 QuantifierPusher]: treesize reduction 18, result has 40.0 percent of original size [2021-02-23 23:08:13,577 WARN L147 QuantifierPusher]: treesize reduction 18, result has 40.0 percent of original size 12 [2021-02-23 23:08:13,583 WARN L141 QuantifierPusher]: treesize reduction 15, result has 62.5 percent of original size [2021-02-23 23:08:13,584 WARN L147 QuantifierPusher]: treesize reduction 15, result has 62.5 percent of original size 25 [2021-02-23 23:08:13,599 WARN L141 QuantifierPusher]: treesize reduction 15, result has 62.5 percent of original size [2021-02-23 23:08:13,602 WARN L147 QuantifierPusher]: treesize reduction 15, result has 62.5 percent of original size 25 [2021-02-23 23:08:13,617 WARN L141 QuantifierPusher]: treesize reduction 15, result has 55.9 percent of original size [2021-02-23 23:08:13,620 WARN L147 QuantifierPusher]: treesize reduction 15, result has 55.9 percent of original size 19 [2021-02-23 23:08:13,634 WARN L141 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-02-23 23:08:13,635 WARN L147 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size 10 [2021-02-23 23:08:13,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:13,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:13,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:13,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:13,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194332287] [2021-02-23 23:08:13,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:13,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 23:08:13,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905386806] [2021-02-23 23:08:13,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 23:08:13,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:13,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 23:08:13,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 23:08:13,672 INFO L87 Difference]: Start difference. First operand 111 states and 115 transitions. Second operand 6 states. [2021-02-23 23:08:13,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:13,987 INFO L93 Difference]: Finished difference Result 144 states and 150 transitions. [2021-02-23 23:08:13,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 23:08:13,988 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2021-02-23 23:08:13,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:13,989 INFO L225 Difference]: With dead ends: 144 [2021-02-23 23:08:13,989 INFO L226 Difference]: Without dead ends: 122 [2021-02-23 23:08:13,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-02-23 23:08:13,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-02-23 23:08:14,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 114. [2021-02-23 23:08:14,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2021-02-23 23:08:14,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 118 transitions. [2021-02-23 23:08:14,015 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 118 transitions. Word has length 42 [2021-02-23 23:08:14,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:14,015 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 118 transitions. [2021-02-23 23:08:14,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 23:08:14,016 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 118 transitions. [2021-02-23 23:08:14,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-23 23:08:14,017 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:14,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:14,017 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 23:08:14,018 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:14,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:14,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1418544430, now seen corresponding path program 1 times [2021-02-23 23:08:14,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:14,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749649933] [2021-02-23 23:08:14,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:14,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:14,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:14,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:14,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:14,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:08:14,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:14,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:08:14,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:14,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:14,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:14,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:14,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:14,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:14,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749649933] [2021-02-23 23:08:14,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:14,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 23:08:14,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938832177] [2021-02-23 23:08:14,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 23:08:14,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:14,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 23:08:14,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-23 23:08:14,131 INFO L87 Difference]: Start difference. First operand 114 states and 118 transitions. Second operand 5 states. [2021-02-23 23:08:14,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:14,415 INFO L93 Difference]: Finished difference Result 119 states and 123 transitions. [2021-02-23 23:08:14,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 23:08:14,416 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2021-02-23 23:08:14,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:14,417 INFO L225 Difference]: With dead ends: 119 [2021-02-23 23:08:14,417 INFO L226 Difference]: Without dead ends: 116 [2021-02-23 23:08:14,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 23:08:14,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-02-23 23:08:14,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 111. [2021-02-23 23:08:14,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2021-02-23 23:08:14,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2021-02-23 23:08:14,441 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 42 [2021-02-23 23:08:14,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:14,441 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2021-02-23 23:08:14,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 23:08:14,442 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2021-02-23 23:08:14,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-23 23:08:14,443 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:14,444 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:14,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 23:08:14,444 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:14,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:14,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1563952123, now seen corresponding path program 1 times [2021-02-23 23:08:14,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:14,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [762342292] [2021-02-23 23:08:14,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:14,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:14,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:14,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:14,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 23:08:14,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:14,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 23:08:14,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:14,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:08:14,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:14,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:14,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:14,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:14,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:14,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:14,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [762342292] [2021-02-23 23:08:14,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:14,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 23:08:14,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66439496] [2021-02-23 23:08:14,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 23:08:14,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:14,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 23:08:14,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-23 23:08:14,587 INFO L87 Difference]: Start difference. First operand 111 states and 115 transitions. Second operand 5 states. [2021-02-23 23:08:14,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:14,848 INFO L93 Difference]: Finished difference Result 114 states and 118 transitions. [2021-02-23 23:08:14,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 23:08:14,849 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2021-02-23 23:08:14,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:14,850 INFO L225 Difference]: With dead ends: 114 [2021-02-23 23:08:14,850 INFO L226 Difference]: Without dead ends: 111 [2021-02-23 23:08:14,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 23:08:14,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-02-23 23:08:14,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 108. [2021-02-23 23:08:14,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2021-02-23 23:08:14,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 112 transitions. [2021-02-23 23:08:14,874 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 112 transitions. Word has length 46 [2021-02-23 23:08:14,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:14,875 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 112 transitions. [2021-02-23 23:08:14,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 23:08:14,875 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 112 transitions. [2021-02-23 23:08:14,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-23 23:08:14,876 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:14,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:14,877 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 23:08:14,877 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:14,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:14,878 INFO L82 PathProgramCache]: Analyzing trace with hash -274831163, now seen corresponding path program 1 times [2021-02-23 23:08:14,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:14,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447799099] [2021-02-23 23:08:14,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:14,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:14,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:14,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:14,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:08:14,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:14,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:08:14,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:14,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 23:08:14,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:14,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 23:08:15,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:15,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 23:08:15,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:15,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 23:08:15,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:15,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 23:08:15,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:15,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-02-23 23:08:15,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:15,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 23:08:15,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:15,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:08:15,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:15,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:08:15,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:15,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:15,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:15,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:15,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:15,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:15,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447799099] [2021-02-23 23:08:15,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:15,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 23:08:15,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581168568] [2021-02-23 23:08:15,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 23:08:15,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:15,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 23:08:15,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-02-23 23:08:15,240 INFO L87 Difference]: Start difference. First operand 108 states and 112 transitions. Second operand 14 states. [2021-02-23 23:08:16,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:16,075 INFO L93 Difference]: Finished difference Result 158 states and 164 transitions. [2021-02-23 23:08:16,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-23 23:08:16,075 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48 [2021-02-23 23:08:16,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:16,077 INFO L225 Difference]: With dead ends: 158 [2021-02-23 23:08:16,077 INFO L226 Difference]: Without dead ends: 156 [2021-02-23 23:08:16,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2021-02-23 23:08:16,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-02-23 23:08:16,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 131. [2021-02-23 23:08:16,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2021-02-23 23:08:16,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 136 transitions. [2021-02-23 23:08:16,107 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 136 transitions. Word has length 48 [2021-02-23 23:08:16,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:16,108 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 136 transitions. [2021-02-23 23:08:16,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 23:08:16,108 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 136 transitions. [2021-02-23 23:08:16,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-02-23 23:08:16,109 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:16,110 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:16,110 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 23:08:16,110 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:16,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:16,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1378541610, now seen corresponding path program 1 times [2021-02-23 23:08:16,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:16,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454259892] [2021-02-23 23:08:16,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:16,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:16,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:16,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-23 23:08:16,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 23:08:16,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 23:08:16,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 23:08:16,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:08:16,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:08:16,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:16,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:16,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:16,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:16,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454259892] [2021-02-23 23:08:16,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:08:16,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-02-23 23:08:16,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635267187] [2021-02-23 23:08:16,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 23:08:16,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:16,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 23:08:16,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-23 23:08:16,304 INFO L87 Difference]: Start difference. First operand 131 states and 136 transitions. Second operand 7 states. [2021-02-23 23:08:16,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:16,691 INFO L93 Difference]: Finished difference Result 163 states and 169 transitions. [2021-02-23 23:08:16,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 23:08:16,692 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 49 [2021-02-23 23:08:16,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:16,693 INFO L225 Difference]: With dead ends: 163 [2021-02-23 23:08:16,693 INFO L226 Difference]: Without dead ends: 124 [2021-02-23 23:08:16,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-02-23 23:08:16,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-02-23 23:08:16,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-02-23 23:08:16,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2021-02-23 23:08:16,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 128 transitions. [2021-02-23 23:08:16,718 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 128 transitions. Word has length 49 [2021-02-23 23:08:16,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:16,718 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 128 transitions. [2021-02-23 23:08:16,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 23:08:16,718 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 128 transitions. [2021-02-23 23:08:16,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-23 23:08:16,719 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:16,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:16,720 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 23:08:16,720 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:16,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:16,721 INFO L82 PathProgramCache]: Analyzing trace with hash -137104274, now seen corresponding path program 1 times [2021-02-23 23:08:16,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:16,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258360303] [2021-02-23 23:08:16,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:16,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:16,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:16,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:08:16,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:08:16,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:08:16,815 WARN L141 QuantifierPusher]: treesize reduction 15, result has 50.0 percent of original size [2021-02-23 23:08:16,816 WARN L147 QuantifierPusher]: treesize reduction 15, result has 50.0 percent of original size 15 [2021-02-23 23:08:16,830 WARN L141 QuantifierPusher]: treesize reduction 13, result has 53.6 percent of original size [2021-02-23 23:08:16,830 WARN L147 QuantifierPusher]: treesize reduction 13, result has 53.6 percent of original size 15 [2021-02-23 23:08:16,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:08:16,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:08:16,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-23 23:08:16,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 23:08:16,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 23:08:16,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-02-23 23:08:16,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 23:08:16,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:08:16,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:08:16,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:17,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:17,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:17,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:17,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:17,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258360303] [2021-02-23 23:08:17,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:17,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-23 23:08:17,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671102402] [2021-02-23 23:08:17,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 23:08:17,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:17,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 23:08:17,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-02-23 23:08:17,052 INFO L87 Difference]: Start difference. First operand 124 states and 128 transitions. Second operand 12 states. [2021-02-23 23:08:17,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:17,880 INFO L93 Difference]: Finished difference Result 216 states and 224 transitions. [2021-02-23 23:08:17,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 23:08:17,881 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 58 [2021-02-23 23:08:17,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:17,882 INFO L225 Difference]: With dead ends: 216 [2021-02-23 23:08:17,883 INFO L226 Difference]: Without dead ends: 214 [2021-02-23 23:08:17,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2021-02-23 23:08:17,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-02-23 23:08:17,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 124. [2021-02-23 23:08:17,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2021-02-23 23:08:17,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 128 transitions. [2021-02-23 23:08:17,926 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 128 transitions. Word has length 58 [2021-02-23 23:08:17,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:17,926 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 128 transitions. [2021-02-23 23:08:17,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 23:08:17,926 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 128 transitions. [2021-02-23 23:08:17,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-02-23 23:08:17,927 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:17,927 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:17,928 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 23:08:17,928 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:17,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:17,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1129093090, now seen corresponding path program 1 times [2021-02-23 23:08:17,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:17,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838839237] [2021-02-23 23:08:17,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:18,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:18,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:18,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:18,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:08:18,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:18,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:08:18,036 WARN L141 QuantifierPusher]: treesize reduction 16, result has 42.9 percent of original size [2021-02-23 23:08:18,037 WARN L147 QuantifierPusher]: treesize reduction 16, result has 42.9 percent of original size 12 [2021-02-23 23:08:18,051 WARN L141 QuantifierPusher]: treesize reduction 29, result has 45.3 percent of original size [2021-02-23 23:08:18,052 WARN L147 QuantifierPusher]: treesize reduction 29, result has 45.3 percent of original size 24 [2021-02-23 23:08:18,076 WARN L141 QuantifierPusher]: treesize reduction 28, result has 54.8 percent of original size [2021-02-23 23:08:18,077 WARN L147 QuantifierPusher]: treesize reduction 28, result has 54.8 percent of original size 34 [2021-02-23 23:08:18,110 WARN L141 QuantifierPusher]: treesize reduction 28, result has 60.6 percent of original size [2021-02-23 23:08:18,112 WARN L147 QuantifierPusher]: treesize reduction 28, result has 60.6 percent of original size 43 [2021-02-23 23:08:18,156 WARN L141 QuantifierPusher]: treesize reduction 28, result has 60.0 percent of original size [2021-02-23 23:08:18,157 WARN L147 QuantifierPusher]: treesize reduction 28, result has 60.0 percent of original size 42 [2021-02-23 23:08:18,202 WARN L141 QuantifierPusher]: treesize reduction 28, result has 62.2 percent of original size [2021-02-23 23:08:18,203 WARN L147 QuantifierPusher]: treesize reduction 28, result has 62.2 percent of original size 46 [2021-02-23 23:08:18,253 WARN L141 QuantifierPusher]: treesize reduction 28, result has 70.2 percent of original size [2021-02-23 23:08:18,255 WARN L147 QuantifierPusher]: treesize reduction 28, result has 70.2 percent of original size 66 [2021-02-23 23:08:18,317 WARN L141 QuantifierPusher]: treesize reduction 28, result has 62.2 percent of original size [2021-02-23 23:08:18,318 WARN L147 QuantifierPusher]: treesize reduction 28, result has 62.2 percent of original size 46 [2021-02-23 23:08:18,342 WARN L141 QuantifierPusher]: treesize reduction 28, result has 54.1 percent of original size [2021-02-23 23:08:18,343 WARN L147 QuantifierPusher]: treesize reduction 28, result has 54.1 percent of original size 33 [2021-02-23 23:08:18,385 WARN L141 QuantifierPusher]: treesize reduction 28, result has 54.1 percent of original size [2021-02-23 23:08:18,386 WARN L147 QuantifierPusher]: treesize reduction 28, result has 54.1 percent of original size 33 [2021-02-23 23:08:18,428 WARN L141 QuantifierPusher]: treesize reduction 28, result has 58.2 percent of original size [2021-02-23 23:08:18,430 WARN L147 QuantifierPusher]: treesize reduction 28, result has 58.2 percent of original size 39 [2021-02-23 23:08:18,476 WARN L141 QuantifierPusher]: treesize reduction 28, result has 50.9 percent of original size [2021-02-23 23:08:18,477 WARN L147 QuantifierPusher]: treesize reduction 28, result has 50.9 percent of original size 29 [2021-02-23 23:08:18,523 WARN L141 QuantifierPusher]: treesize reduction 33, result has 40.0 percent of original size [2021-02-23 23:08:18,524 WARN L147 QuantifierPusher]: treesize reduction 33, result has 40.0 percent of original size 22 [2021-02-23 23:08:18,554 WARN L141 QuantifierPusher]: treesize reduction 14, result has 39.1 percent of original size [2021-02-23 23:08:18,555 WARN L147 QuantifierPusher]: treesize reduction 14, result has 39.1 percent of original size 9 [2021-02-23 23:08:18,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:18,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:08:18,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:18,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:18,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:18,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:18,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:18,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:18,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838839237] [2021-02-23 23:08:18,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:08:18,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-02-23 23:08:18,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960035031] [2021-02-23 23:08:18,638 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-23 23:08:18,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:18,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-23 23:08:18,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2021-02-23 23:08:18,639 INFO L87 Difference]: Start difference. First operand 124 states and 128 transitions. Second operand 19 states. [2021-02-23 23:08:19,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:19,896 INFO L93 Difference]: Finished difference Result 190 states and 196 transitions. [2021-02-23 23:08:19,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-23 23:08:19,897 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 59 [2021-02-23 23:08:19,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:19,899 INFO L225 Difference]: With dead ends: 190 [2021-02-23 23:08:19,899 INFO L226 Difference]: Without dead ends: 187 [2021-02-23 23:08:19,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=311, Invalid=879, Unknown=0, NotChecked=0, Total=1190 [2021-02-23 23:08:19,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-02-23 23:08:19,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 143. [2021-02-23 23:08:19,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2021-02-23 23:08:19,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 148 transitions. [2021-02-23 23:08:19,949 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 148 transitions. Word has length 59 [2021-02-23 23:08:19,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:19,949 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 148 transitions. [2021-02-23 23:08:19,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-23 23:08:19,949 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 148 transitions. [2021-02-23 23:08:19,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-02-23 23:08:19,950 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:19,950 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:19,951 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 23:08:19,951 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:19,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:19,951 INFO L82 PathProgramCache]: Analyzing trace with hash 17324185, now seen corresponding path program 1 times [2021-02-23 23:08:19,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:19,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236156308] [2021-02-23 23:08:19,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:20,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:20,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:20,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:20,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:08:20,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:20,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:08:20,145 WARN L141 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-02-23 23:08:20,146 WARN L147 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size 15 [2021-02-23 23:08:20,168 WARN L141 QuantifierPusher]: treesize reduction 30, result has 44.4 percent of original size [2021-02-23 23:08:20,170 WARN L147 QuantifierPusher]: treesize reduction 30, result has 44.4 percent of original size 24 [2021-02-23 23:08:20,195 WARN L141 QuantifierPusher]: treesize reduction 30, result has 53.1 percent of original size [2021-02-23 23:08:20,197 WARN L147 QuantifierPusher]: treesize reduction 30, result has 53.1 percent of original size 34 [2021-02-23 23:08:20,232 WARN L141 QuantifierPusher]: treesize reduction 30, result has 57.1 percent of original size [2021-02-23 23:08:20,235 WARN L147 QuantifierPusher]: treesize reduction 30, result has 57.1 percent of original size 40 [2021-02-23 23:08:20,287 WARN L141 QuantifierPusher]: treesize reduction 29, result has 62.8 percent of original size [2021-02-23 23:08:20,289 WARN L147 QuantifierPusher]: treesize reduction 29, result has 62.8 percent of original size 49 [2021-02-23 23:08:20,342 WARN L141 QuantifierPusher]: treesize reduction 33, result has 63.3 percent of original size [2021-02-23 23:08:20,343 WARN L147 QuantifierPusher]: treesize reduction 33, result has 63.3 percent of original size 57 [2021-02-23 23:08:20,399 WARN L141 QuantifierPusher]: treesize reduction 25, result has 77.7 percent of original size [2021-02-23 23:08:20,400 WARN L147 QuantifierPusher]: treesize reduction 25, result has 77.7 percent of original size 87 [2021-02-23 23:08:20,470 WARN L141 QuantifierPusher]: treesize reduction 25, result has 69.5 percent of original size [2021-02-23 23:08:20,471 WARN L147 QuantifierPusher]: treesize reduction 25, result has 69.5 percent of original size 57 [2021-02-23 23:08:20,491 WARN L141 QuantifierPusher]: treesize reduction 24, result has 62.5 percent of original size [2021-02-23 23:08:20,492 WARN L147 QuantifierPusher]: treesize reduction 24, result has 62.5 percent of original size 40 [2021-02-23 23:08:20,545 WARN L141 QuantifierPusher]: treesize reduction 24, result has 62.5 percent of original size [2021-02-23 23:08:20,546 WARN L147 QuantifierPusher]: treesize reduction 24, result has 62.5 percent of original size 40 [2021-02-23 23:08:20,609 WARN L141 QuantifierPusher]: treesize reduction 24, result has 67.6 percent of original size [2021-02-23 23:08:20,610 WARN L147 QuantifierPusher]: treesize reduction 24, result has 67.6 percent of original size 50 [2021-02-23 23:08:20,637 WARN L141 QuantifierPusher]: treesize reduction 24, result has 62.5 percent of original size [2021-02-23 23:08:20,640 WARN L147 QuantifierPusher]: treesize reduction 24, result has 62.5 percent of original size 40 [2021-02-23 23:08:20,642 WARN L141 QuantifierPusher]: treesize reduction 24, result has 61.3 percent of original size [2021-02-23 23:08:20,644 WARN L147 QuantifierPusher]: treesize reduction 24, result has 61.3 percent of original size 38 [2021-02-23 23:08:20,690 WARN L141 QuantifierPusher]: treesize reduction 24, result has 63.6 percent of original size [2021-02-23 23:08:20,691 WARN L147 QuantifierPusher]: treesize reduction 24, result has 63.6 percent of original size 42 [2021-02-23 23:08:20,735 WARN L141 QuantifierPusher]: treesize reduction 26, result has 78.0 percent of original size [2021-02-23 23:08:20,736 WARN L147 QuantifierPusher]: treesize reduction 26, result has 78.0 percent of original size 92 [2021-02-23 23:08:20,797 WARN L141 QuantifierPusher]: treesize reduction 24, result has 58.6 percent of original size [2021-02-23 23:08:20,798 WARN L147 QuantifierPusher]: treesize reduction 24, result has 58.6 percent of original size 34 [2021-02-23 23:08:20,840 WARN L141 QuantifierPusher]: treesize reduction 24, result has 55.6 percent of original size [2021-02-23 23:08:20,841 WARN L147 QuantifierPusher]: treesize reduction 24, result has 55.6 percent of original size 30 [2021-02-23 23:08:20,883 WARN L141 QuantifierPusher]: treesize reduction 24, result has 55.6 percent of original size [2021-02-23 23:08:20,884 WARN L147 QuantifierPusher]: treesize reduction 24, result has 55.6 percent of original size 30 [2021-02-23 23:08:20,927 WARN L141 QuantifierPusher]: treesize reduction 25, result has 58.3 percent of original size [2021-02-23 23:08:20,928 WARN L147 QuantifierPusher]: treesize reduction 25, result has 58.3 percent of original size 35 [2021-02-23 23:08:20,969 WARN L141 QuantifierPusher]: treesize reduction 25, result has 50.0 percent of original size [2021-02-23 23:08:20,970 WARN L147 QuantifierPusher]: treesize reduction 25, result has 50.0 percent of original size 25 [2021-02-23 23:08:21,009 WARN L141 QuantifierPusher]: treesize reduction 20, result has 44.4 percent of original size [2021-02-23 23:08:21,011 WARN L147 QuantifierPusher]: treesize reduction 20, result has 44.4 percent of original size 16 [2021-02-23 23:08:21,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:21,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:08:21,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:21,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:08:21,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:21,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:21,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:21,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:21,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:21,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:21,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236156308] [2021-02-23 23:08:21,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:08:21,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2021-02-23 23:08:21,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979579832] [2021-02-23 23:08:21,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-02-23 23:08:21,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:21,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-02-23 23:08:21,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2021-02-23 23:08:21,180 INFO L87 Difference]: Start difference. First operand 143 states and 148 transitions. Second operand 25 states. [2021-02-23 23:08:23,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:23,265 INFO L93 Difference]: Finished difference Result 220 states and 227 transitions. [2021-02-23 23:08:23,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 23:08:23,265 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 69 [2021-02-23 23:08:23,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:23,267 INFO L225 Difference]: With dead ends: 220 [2021-02-23 23:08:23,267 INFO L226 Difference]: Without dead ends: 217 [2021-02-23 23:08:23,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=531, Invalid=1821, Unknown=0, NotChecked=0, Total=2352 [2021-02-23 23:08:23,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-02-23 23:08:23,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 155. [2021-02-23 23:08:23,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2021-02-23 23:08:23,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 160 transitions. [2021-02-23 23:08:23,313 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 160 transitions. Word has length 69 [2021-02-23 23:08:23,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:23,313 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 160 transitions. [2021-02-23 23:08:23,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2021-02-23 23:08:23,314 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 160 transitions. [2021-02-23 23:08:23,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-02-23 23:08:23,314 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:23,315 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:23,315 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-23 23:08:23,315 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:23,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:23,316 INFO L82 PathProgramCache]: Analyzing trace with hash 246241522, now seen corresponding path program 1 times [2021-02-23 23:08:23,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:23,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054443434] [2021-02-23 23:08:23,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:23,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:23,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:23,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:23,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:08:23,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:23,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:08:23,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:23,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 23:08:23,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:23,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 23:08:23,461 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:23,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 23:08:23,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:23,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-23 23:08:23,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:23,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-23 23:08:23,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:23,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-02-23 23:08:23,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:23,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-23 23:08:23,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:23,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 23:08:23,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:23,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 23:08:23,651 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.6 percent of original size [2021-02-23 23:08:23,655 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.6 percent of original size 28 [2021-02-23 23:08:23,691 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-02-23 23:08:23,694 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size 26 [2021-02-23 23:08:23,723 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-02-23 23:08:23,724 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size 34 [2021-02-23 23:08:23,756 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.6 percent of original size [2021-02-23 23:08:23,757 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.6 percent of original size 40 [2021-02-23 23:08:23,795 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.2 percent of original size [2021-02-23 23:08:23,797 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.2 percent of original size 25 [2021-02-23 23:08:23,829 WARN L141 QuantifierPusher]: treesize reduction 14, result has 22.2 percent of original size [2021-02-23 23:08:23,830 WARN L147 QuantifierPusher]: treesize reduction 14, result has 22.2 percent of original size 4 [2021-02-23 23:08:23,853 WARN L141 QuantifierPusher]: treesize reduction 14, result has 22.2 percent of original size [2021-02-23 23:08:23,854 WARN L147 QuantifierPusher]: treesize reduction 14, result has 22.2 percent of original size 4 [2021-02-23 23:08:23,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:23,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:23,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:23,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:23,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:23,965 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:23,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054443434] [2021-02-23 23:08:23,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:08:23,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-02-23 23:08:23,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707806376] [2021-02-23 23:08:23,966 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-02-23 23:08:23,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:23,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-02-23 23:08:23,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2021-02-23 23:08:23,968 INFO L87 Difference]: Start difference. First operand 155 states and 160 transitions. Second operand 21 states. [2021-02-23 23:08:24,606 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 51 [2021-02-23 23:08:24,758 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 46 [2021-02-23 23:08:25,670 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2021-02-23 23:08:25,840 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2021-02-23 23:08:26,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:26,232 INFO L93 Difference]: Finished difference Result 211 states and 219 transitions. [2021-02-23 23:08:26,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-02-23 23:08:26,232 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 74 [2021-02-23 23:08:26,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:26,234 INFO L225 Difference]: With dead ends: 211 [2021-02-23 23:08:26,234 INFO L226 Difference]: Without dead ends: 209 [2021-02-23 23:08:26,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=354, Invalid=1052, Unknown=0, NotChecked=0, Total=1406 [2021-02-23 23:08:26,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-02-23 23:08:26,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 193. [2021-02-23 23:08:26,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2021-02-23 23:08:26,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 201 transitions. [2021-02-23 23:08:26,281 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 201 transitions. Word has length 74 [2021-02-23 23:08:26,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:26,282 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 201 transitions. [2021-02-23 23:08:26,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-02-23 23:08:26,282 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 201 transitions. [2021-02-23 23:08:26,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-02-23 23:08:26,283 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:26,283 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:26,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-23 23:08:26,284 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:26,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:26,284 INFO L82 PathProgramCache]: Analyzing trace with hash 351925661, now seen corresponding path program 1 times [2021-02-23 23:08:26,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:26,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299096476] [2021-02-23 23:08:26,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:26,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:26,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:26,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:26,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:08:26,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:26,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:08:26,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:26,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:08:26,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:26,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:08:26,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:26,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 23:08:26,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:26,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 23:08:26,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:26,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-23 23:08:26,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:26,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-02-23 23:08:26,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:26,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-23 23:08:26,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:26,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-23 23:08:26,520 WARN L141 QuantifierPusher]: treesize reduction 22, result has 69.4 percent of original size [2021-02-23 23:08:26,521 WARN L147 QuantifierPusher]: treesize reduction 22, result has 69.4 percent of original size 50 [2021-02-23 23:08:26,570 WARN L141 QuantifierPusher]: treesize reduction 22, result has 60.7 percent of original size [2021-02-23 23:08:26,571 WARN L147 QuantifierPusher]: treesize reduction 22, result has 60.7 percent of original size 34 [2021-02-23 23:08:26,589 WARN L141 QuantifierPusher]: treesize reduction 17, result has 63.8 percent of original size [2021-02-23 23:08:26,590 WARN L147 QuantifierPusher]: treesize reduction 17, result has 63.8 percent of original size 30 [2021-02-23 23:08:26,630 WARN L141 QuantifierPusher]: treesize reduction 17, result has 70.2 percent of original size [2021-02-23 23:08:26,631 WARN L147 QuantifierPusher]: treesize reduction 17, result has 70.2 percent of original size 40 [2021-02-23 23:08:26,681 WARN L141 QuantifierPusher]: treesize reduction 17, result has 70.2 percent of original size [2021-02-23 23:08:26,682 WARN L147 QuantifierPusher]: treesize reduction 17, result has 70.2 percent of original size 40 [2021-02-23 23:08:26,730 WARN L141 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-02-23 23:08:26,731 WARN L147 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size 24 [2021-02-23 23:08:26,758 WARN L141 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-02-23 23:08:26,759 WARN L147 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size 24 [2021-02-23 23:08:26,788 WARN L141 QuantifierPusher]: treesize reduction 10, result has 76.7 percent of original size [2021-02-23 23:08:26,789 WARN L147 QuantifierPusher]: treesize reduction 10, result has 76.7 percent of original size 33 [2021-02-23 23:08:26,824 WARN L141 QuantifierPusher]: treesize reduction 9, result has 76.9 percent of original size [2021-02-23 23:08:26,825 WARN L147 QuantifierPusher]: treesize reduction 9, result has 76.9 percent of original size 30 [2021-02-23 23:08:26,855 WARN L141 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-02-23 23:08:26,857 WARN L147 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size 24 [2021-02-23 23:08:26,889 WARN L141 QuantifierPusher]: treesize reduction 9, result has 73.5 percent of original size [2021-02-23 23:08:26,890 WARN L147 QuantifierPusher]: treesize reduction 9, result has 73.5 percent of original size 25 [2021-02-23 23:08:26,924 WARN L141 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-02-23 23:08:26,925 WARN L147 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size 17 [2021-02-23 23:08:26,965 WARN L141 QuantifierPusher]: treesize reduction 25, result has 51.0 percent of original size [2021-02-23 23:08:26,966 WARN L147 QuantifierPusher]: treesize reduction 25, result has 51.0 percent of original size 26 [2021-02-23 23:08:27,023 WARN L141 QuantifierPusher]: treesize reduction 25, result has 44.4 percent of original size [2021-02-23 23:08:27,028 WARN L147 QuantifierPusher]: treesize reduction 25, result has 44.4 percent of original size 20 [2021-02-23 23:08:27,092 WARN L141 QuantifierPusher]: treesize reduction 30, result has 26.8 percent of original size [2021-02-23 23:08:27,093 WARN L147 QuantifierPusher]: treesize reduction 30, result has 26.8 percent of original size 11 [2021-02-23 23:08:27,095 WARN L141 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-02-23 23:08:27,095 WARN L147 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size 1 [2021-02-23 23:08:27,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:27,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:27,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:27,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:27,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:27,186 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:27,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299096476] [2021-02-23 23:08:27,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:08:27,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2021-02-23 23:08:27,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902072892] [2021-02-23 23:08:27,187 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-02-23 23:08:27,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:27,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-02-23 23:08:27,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2021-02-23 23:08:27,189 INFO L87 Difference]: Start difference. First operand 193 states and 201 transitions. Second operand 25 states. [2021-02-23 23:08:29,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:29,516 INFO L93 Difference]: Finished difference Result 270 states and 281 transitions. [2021-02-23 23:08:29,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-23 23:08:29,517 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 75 [2021-02-23 23:08:29,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:29,519 INFO L225 Difference]: With dead ends: 270 [2021-02-23 23:08:29,519 INFO L226 Difference]: Without dead ends: 248 [2021-02-23 23:08:29,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=380, Invalid=1782, Unknown=0, NotChecked=0, Total=2162 [2021-02-23 23:08:29,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-02-23 23:08:29,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 209. [2021-02-23 23:08:29,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2021-02-23 23:08:29,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 217 transitions. [2021-02-23 23:08:29,572 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 217 transitions. Word has length 75 [2021-02-23 23:08:29,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:29,572 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 217 transitions. [2021-02-23 23:08:29,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2021-02-23 23:08:29,572 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 217 transitions. [2021-02-23 23:08:29,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-02-23 23:08:29,573 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:29,574 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:29,574 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-23 23:08:29,574 INFO L428 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:29,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:29,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1064376785, now seen corresponding path program 2 times [2021-02-23 23:08:29,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:29,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900058282] [2021-02-23 23:08:29,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:29,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:29,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:29,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:29,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:08:29,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:29,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:08:29,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:29,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 23:08:29,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:29,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 23:08:29,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:29,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 23:08:29,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:29,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-23 23:08:29,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:29,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 23:08:29,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:29,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 23:08:29,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:29,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-23 23:08:29,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:29,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-23 23:08:29,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:29,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-23 23:08:29,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:29,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-02-23 23:08:29,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:29,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-02-23 23:08:29,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:29,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-23 23:08:29,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:29,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-23 23:08:29,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:29,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-23 23:08:29,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:29,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-23 23:08:30,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:30,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 23:08:30,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:30,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:08:30,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:30,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:08:30,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:30,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:30,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:30,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:30,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:30,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:30,201 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:30,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900058282] [2021-02-23 23:08:30,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:08:30,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-02-23 23:08:30,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705142786] [2021-02-23 23:08:30,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-23 23:08:30,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:30,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-23 23:08:30,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2021-02-23 23:08:30,203 INFO L87 Difference]: Start difference. First operand 209 states and 217 transitions. Second operand 22 states. [2021-02-23 23:08:31,288 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2021-02-23 23:08:32,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:32,472 INFO L93 Difference]: Finished difference Result 250 states and 259 transitions. [2021-02-23 23:08:32,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-23 23:08:32,473 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 82 [2021-02-23 23:08:32,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:32,476 INFO L225 Difference]: With dead ends: 250 [2021-02-23 23:08:32,476 INFO L226 Difference]: Without dead ends: 204 [2021-02-23 23:08:32,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=320, Invalid=1572, Unknown=0, NotChecked=0, Total=1892 [2021-02-23 23:08:32,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-02-23 23:08:32,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 193. [2021-02-23 23:08:32,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2021-02-23 23:08:32,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 200 transitions. [2021-02-23 23:08:32,517 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 200 transitions. Word has length 82 [2021-02-23 23:08:32,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:32,517 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 200 transitions. [2021-02-23 23:08:32,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-02-23 23:08:32,518 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 200 transitions. [2021-02-23 23:08:32,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-02-23 23:08:32,519 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:32,519 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:32,520 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-23 23:08:32,520 INFO L428 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:32,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:32,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1765749595, now seen corresponding path program 1 times [2021-02-23 23:08:32,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:32,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464911122] [2021-02-23 23:08:32,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:32,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:32,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:32,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:32,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:08:32,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:32,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:08:32,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:32,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 23:08:32,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:32,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 23:08:32,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:32,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 23:08:32,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:32,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 23:08:32,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:32,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-23 23:08:32,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:32,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-23 23:08:32,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:32,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 23:08:32,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:32,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 23:08:32,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:32,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 23:08:32,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:32,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-23 23:08:32,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:32,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-23 23:08:32,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:32,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-02-23 23:08:32,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:32,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-23 23:08:32,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:32,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 23:08:32,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:32,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 23:08:32,984 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.6 percent of original size [2021-02-23 23:08:32,985 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.6 percent of original size 28 [2021-02-23 23:08:33,024 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-02-23 23:08:33,025 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size 26 [2021-02-23 23:08:33,062 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-02-23 23:08:33,063 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size 34 [2021-02-23 23:08:33,104 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.6 percent of original size [2021-02-23 23:08:33,105 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.6 percent of original size 40 [2021-02-23 23:08:33,150 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.2 percent of original size [2021-02-23 23:08:33,151 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.2 percent of original size 25 [2021-02-23 23:08:33,189 WARN L141 QuantifierPusher]: treesize reduction 14, result has 22.2 percent of original size [2021-02-23 23:08:33,190 WARN L147 QuantifierPusher]: treesize reduction 14, result has 22.2 percent of original size 4 [2021-02-23 23:08:33,216 WARN L141 QuantifierPusher]: treesize reduction 14, result has 22.2 percent of original size [2021-02-23 23:08:33,217 WARN L147 QuantifierPusher]: treesize reduction 14, result has 22.2 percent of original size 4 [2021-02-23 23:08:33,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:33,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:33,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:33,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:33,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:33,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:33,335 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:33,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464911122] [2021-02-23 23:08:33,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:08:33,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2021-02-23 23:08:33,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762294447] [2021-02-23 23:08:33,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-02-23 23:08:33,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:33,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-02-23 23:08:33,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2021-02-23 23:08:33,338 INFO L87 Difference]: Start difference. First operand 193 states and 200 transitions. Second operand 26 states. [2021-02-23 23:08:35,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:35,615 INFO L93 Difference]: Finished difference Result 209 states and 217 transitions. [2021-02-23 23:08:35,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-23 23:08:35,616 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 84 [2021-02-23 23:08:35,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:35,617 INFO L225 Difference]: With dead ends: 209 [2021-02-23 23:08:35,617 INFO L226 Difference]: Without dead ends: 207 [2021-02-23 23:08:35,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=484, Invalid=1678, Unknown=0, NotChecked=0, Total=2162 [2021-02-23 23:08:35,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-02-23 23:08:35,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 156. [2021-02-23 23:08:35,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2021-02-23 23:08:35,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 161 transitions. [2021-02-23 23:08:35,663 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 161 transitions. Word has length 84 [2021-02-23 23:08:35,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:35,663 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 161 transitions. [2021-02-23 23:08:35,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2021-02-23 23:08:35,664 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 161 transitions. [2021-02-23 23:08:35,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-02-23 23:08:35,665 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:35,665 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:35,665 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-23 23:08:35,665 INFO L428 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:35,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:35,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1262372459, now seen corresponding path program 2 times [2021-02-23 23:08:35,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:35,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945651108] [2021-02-23 23:08:35,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:35,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:35,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:35,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:35,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:08:35,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:35,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:08:35,793 WARN L141 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-02-23 23:08:35,794 WARN L147 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size 15 [2021-02-23 23:08:35,810 WARN L141 QuantifierPusher]: treesize reduction 30, result has 44.4 percent of original size [2021-02-23 23:08:35,810 WARN L147 QuantifierPusher]: treesize reduction 30, result has 44.4 percent of original size 24 [2021-02-23 23:08:35,833 WARN L141 QuantifierPusher]: treesize reduction 30, result has 53.1 percent of original size [2021-02-23 23:08:35,834 WARN L147 QuantifierPusher]: treesize reduction 30, result has 53.1 percent of original size 34 [2021-02-23 23:08:35,867 WARN L141 QuantifierPusher]: treesize reduction 30, result has 57.1 percent of original size [2021-02-23 23:08:35,868 WARN L147 QuantifierPusher]: treesize reduction 30, result has 57.1 percent of original size 40 [2021-02-23 23:08:35,914 WARN L141 QuantifierPusher]: treesize reduction 29, result has 62.8 percent of original size [2021-02-23 23:08:35,915 WARN L147 QuantifierPusher]: treesize reduction 29, result has 62.8 percent of original size 49 [2021-02-23 23:08:35,967 WARN L141 QuantifierPusher]: treesize reduction 33, result has 63.3 percent of original size [2021-02-23 23:08:35,968 WARN L147 QuantifierPusher]: treesize reduction 33, result has 63.3 percent of original size 57 [2021-02-23 23:08:36,028 WARN L141 QuantifierPusher]: treesize reduction 25, result has 77.7 percent of original size [2021-02-23 23:08:36,029 WARN L147 QuantifierPusher]: treesize reduction 25, result has 77.7 percent of original size 87 [2021-02-23 23:08:36,101 WARN L141 QuantifierPusher]: treesize reduction 25, result has 69.5 percent of original size [2021-02-23 23:08:36,102 WARN L147 QuantifierPusher]: treesize reduction 25, result has 69.5 percent of original size 57 [2021-02-23 23:08:36,122 WARN L141 QuantifierPusher]: treesize reduction 24, result has 62.5 percent of original size [2021-02-23 23:08:36,122 WARN L147 QuantifierPusher]: treesize reduction 24, result has 62.5 percent of original size 40 [2021-02-23 23:08:36,167 WARN L141 QuantifierPusher]: treesize reduction 24, result has 62.5 percent of original size [2021-02-23 23:08:36,167 WARN L147 QuantifierPusher]: treesize reduction 24, result has 62.5 percent of original size 40 [2021-02-23 23:08:36,226 WARN L141 QuantifierPusher]: treesize reduction 24, result has 67.6 percent of original size [2021-02-23 23:08:36,227 WARN L147 QuantifierPusher]: treesize reduction 24, result has 67.6 percent of original size 50 [2021-02-23 23:08:36,251 WARN L141 QuantifierPusher]: treesize reduction 24, result has 62.5 percent of original size [2021-02-23 23:08:36,252 WARN L147 QuantifierPusher]: treesize reduction 24, result has 62.5 percent of original size 40 [2021-02-23 23:08:36,253 WARN L141 QuantifierPusher]: treesize reduction 24, result has 61.3 percent of original size [2021-02-23 23:08:36,254 WARN L147 QuantifierPusher]: treesize reduction 24, result has 61.3 percent of original size 38 [2021-02-23 23:08:36,301 WARN L141 QuantifierPusher]: treesize reduction 24, result has 63.6 percent of original size [2021-02-23 23:08:36,302 WARN L147 QuantifierPusher]: treesize reduction 24, result has 63.6 percent of original size 42 [2021-02-23 23:08:36,347 WARN L141 QuantifierPusher]: treesize reduction 26, result has 78.0 percent of original size [2021-02-23 23:08:36,348 WARN L147 QuantifierPusher]: treesize reduction 26, result has 78.0 percent of original size 92 [2021-02-23 23:08:36,407 WARN L141 QuantifierPusher]: treesize reduction 24, result has 58.6 percent of original size [2021-02-23 23:08:36,408 WARN L147 QuantifierPusher]: treesize reduction 24, result has 58.6 percent of original size 34 [2021-02-23 23:08:36,451 WARN L141 QuantifierPusher]: treesize reduction 24, result has 55.6 percent of original size [2021-02-23 23:08:36,452 WARN L147 QuantifierPusher]: treesize reduction 24, result has 55.6 percent of original size 30 [2021-02-23 23:08:36,504 WARN L141 QuantifierPusher]: treesize reduction 24, result has 55.6 percent of original size [2021-02-23 23:08:36,505 WARN L147 QuantifierPusher]: treesize reduction 24, result has 55.6 percent of original size 30 [2021-02-23 23:08:36,555 WARN L141 QuantifierPusher]: treesize reduction 25, result has 58.3 percent of original size [2021-02-23 23:08:36,556 WARN L147 QuantifierPusher]: treesize reduction 25, result has 58.3 percent of original size 35 [2021-02-23 23:08:36,607 WARN L141 QuantifierPusher]: treesize reduction 25, result has 50.0 percent of original size [2021-02-23 23:08:36,609 WARN L147 QuantifierPusher]: treesize reduction 25, result has 50.0 percent of original size 25 [2021-02-23 23:08:36,649 WARN L141 QuantifierPusher]: treesize reduction 20, result has 44.4 percent of original size [2021-02-23 23:08:36,650 WARN L147 QuantifierPusher]: treesize reduction 20, result has 44.4 percent of original size 16 [2021-02-23 23:08:36,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:36,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:08:36,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:36,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:08:36,714 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:36,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:36,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:36,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:36,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:36,814 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:36,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945651108] [2021-02-23 23:08:36,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:08:36,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2021-02-23 23:08:36,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451194982] [2021-02-23 23:08:36,816 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-02-23 23:08:36,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:36,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-02-23 23:08:36,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2021-02-23 23:08:36,817 INFO L87 Difference]: Start difference. First operand 156 states and 161 transitions. Second operand 25 states. [2021-02-23 23:08:39,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:39,262 INFO L93 Difference]: Finished difference Result 236 states and 244 transitions. [2021-02-23 23:08:39,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-02-23 23:08:39,263 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 85 [2021-02-23 23:08:39,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:39,265 INFO L225 Difference]: With dead ends: 236 [2021-02-23 23:08:39,265 INFO L226 Difference]: Without dead ends: 233 [2021-02-23 23:08:39,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=535, Invalid=1721, Unknown=0, NotChecked=0, Total=2256 [2021-02-23 23:08:39,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-02-23 23:08:39,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 170. [2021-02-23 23:08:39,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2021-02-23 23:08:39,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 176 transitions. [2021-02-23 23:08:39,312 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 176 transitions. Word has length 85 [2021-02-23 23:08:39,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:39,312 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 176 transitions. [2021-02-23 23:08:39,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2021-02-23 23:08:39,313 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 176 transitions. [2021-02-23 23:08:39,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-02-23 23:08:39,314 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:39,314 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:39,314 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-23 23:08:39,314 INFO L428 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:39,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:39,315 INFO L82 PathProgramCache]: Analyzing trace with hash 212035668, now seen corresponding path program 1 times [2021-02-23 23:08:39,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:39,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056816522] [2021-02-23 23:08:39,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:39,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:39,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:39,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:39,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:08:39,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:39,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:08:39,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:39,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:08:39,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:39,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:08:39,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:39,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 23:08:39,457 WARN L141 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-02-23 23:08:39,458 WARN L147 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size 24 [2021-02-23 23:08:39,476 WARN L141 QuantifierPusher]: treesize reduction 8, result has 80.0 percent of original size [2021-02-23 23:08:39,477 WARN L147 QuantifierPusher]: treesize reduction 8, result has 80.0 percent of original size 32 [2021-02-23 23:08:39,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:39,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-02-23 23:08:39,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:39,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-23 23:08:39,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:39,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-23 23:08:39,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:39,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-02-23 23:08:39,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:39,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-23 23:08:39,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:39,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-23 23:08:39,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:39,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-02-23 23:08:39,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:39,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-02-23 23:08:39,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:39,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-02-23 23:08:39,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:39,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-02-23 23:08:39,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:39,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-23 23:08:39,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:39,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-02-23 23:08:39,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:39,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-23 23:08:39,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:39,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 23:08:39,935 WARN L141 QuantifierPusher]: treesize reduction 14, result has 53.3 percent of original size [2021-02-23 23:08:39,936 WARN L147 QuantifierPusher]: treesize reduction 14, result has 53.3 percent of original size 16 [2021-02-23 23:08:39,956 WARN L141 QuantifierPusher]: treesize reduction 14, result has 53.3 percent of original size [2021-02-23 23:08:39,956 WARN L147 QuantifierPusher]: treesize reduction 14, result has 53.3 percent of original size 16 [2021-02-23 23:08:39,976 WARN L141 QuantifierPusher]: treesize reduction 14, result has 36.4 percent of original size [2021-02-23 23:08:39,977 WARN L147 QuantifierPusher]: treesize reduction 14, result has 36.4 percent of original size 8 [2021-02-23 23:08:39,997 WARN L141 QuantifierPusher]: treesize reduction 14, result has 36.4 percent of original size [2021-02-23 23:08:39,997 WARN L147 QuantifierPusher]: treesize reduction 14, result has 36.4 percent of original size 8 [2021-02-23 23:08:40,020 WARN L141 QuantifierPusher]: treesize reduction 14, result has 22.2 percent of original size [2021-02-23 23:08:40,021 WARN L147 QuantifierPusher]: treesize reduction 14, result has 22.2 percent of original size 4 [2021-02-23 23:08:40,041 WARN L141 QuantifierPusher]: treesize reduction 14, result has 22.2 percent of original size [2021-02-23 23:08:40,042 WARN L147 QuantifierPusher]: treesize reduction 14, result has 22.2 percent of original size 4 [2021-02-23 23:08:40,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:40,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:40,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:40,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:40,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:40,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:40,163 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:40,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056816522] [2021-02-23 23:08:40,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:08:40,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2021-02-23 23:08:40,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396000999] [2021-02-23 23:08:40,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-02-23 23:08:40,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:40,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-02-23 23:08:40,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2021-02-23 23:08:40,170 INFO L87 Difference]: Start difference. First operand 170 states and 176 transitions. Second operand 25 states. [2021-02-23 23:08:41,378 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2021-02-23 23:08:41,599 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2021-02-23 23:08:42,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:42,967 INFO L93 Difference]: Finished difference Result 254 states and 263 transitions. [2021-02-23 23:08:42,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-02-23 23:08:42,968 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 85 [2021-02-23 23:08:42,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:42,970 INFO L225 Difference]: With dead ends: 254 [2021-02-23 23:08:42,970 INFO L226 Difference]: Without dead ends: 252 [2021-02-23 23:08:42,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=398, Invalid=2152, Unknown=0, NotChecked=0, Total=2550 [2021-02-23 23:08:42,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-02-23 23:08:43,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 206. [2021-02-23 23:08:43,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2021-02-23 23:08:43,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 214 transitions. [2021-02-23 23:08:43,011 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 214 transitions. Word has length 85 [2021-02-23 23:08:43,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:43,011 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 214 transitions. [2021-02-23 23:08:43,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2021-02-23 23:08:43,012 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 214 transitions. [2021-02-23 23:08:43,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-02-23 23:08:43,013 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:43,013 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:43,013 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-23 23:08:43,013 INFO L428 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:43,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:43,014 INFO L82 PathProgramCache]: Analyzing trace with hash -894716357, now seen corresponding path program 1 times [2021-02-23 23:08:43,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:43,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430070574] [2021-02-23 23:08:43,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 23:08:43,045 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 23:08:43,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 23:08:43,082 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 23:08:43,136 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 23:08:43,137 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 23:08:43,137 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-02-23 23:08:43,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 11:08:43 BoogieIcfgContainer [2021-02-23 23:08:43,216 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 23:08:43,217 INFO L168 Benchmark]: Toolchain (without parser) took 34058.63 ms. Allocated memory was 161.5 MB in the beginning and 405.8 MB in the end (delta: 244.3 MB). Free memory was 135.8 MB in the beginning and 244.8 MB in the end (delta: -109.0 MB). Peak memory consumption was 136.4 MB. Max. memory is 8.0 GB. [2021-02-23 23:08:43,217 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 161.5 MB. Free memory is still 134.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 23:08:43,217 INFO L168 Benchmark]: CACSL2BoogieTranslator took 603.09 ms. Allocated memory is still 161.5 MB. Free memory was 134.7 MB in the beginning and 111.5 MB in the end (delta: 23.2 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-02-23 23:08:43,217 INFO L168 Benchmark]: Boogie Preprocessor took 156.69 ms. Allocated memory is still 161.5 MB. Free memory was 111.4 MB in the beginning and 142.3 MB in the end (delta: -31.0 MB). Peak memory consumption was 5.4 MB. Max. memory is 8.0 GB. [2021-02-23 23:08:43,217 INFO L168 Benchmark]: RCFGBuilder took 873.01 ms. Allocated memory is still 161.5 MB. Free memory was 142.3 MB in the beginning and 86.3 MB in the end (delta: 56.0 MB). Peak memory consumption was 55.6 MB. Max. memory is 8.0 GB. [2021-02-23 23:08:43,218 INFO L168 Benchmark]: TraceAbstraction took 32403.81 ms. Allocated memory was 161.5 MB in the beginning and 405.8 MB in the end (delta: 244.3 MB). Free memory was 86.3 MB in the beginning and 244.8 MB in the end (delta: -158.5 MB). Peak memory consumption was 86.9 MB. Max. memory is 8.0 GB. [2021-02-23 23:08:43,218 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 161.5 MB. Free memory is still 134.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 603.09 ms. Allocated memory is still 161.5 MB. Free memory was 134.7 MB in the beginning and 111.5 MB in the end (delta: 23.2 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 156.69 ms. Allocated memory is still 161.5 MB. Free memory was 111.4 MB in the beginning and 142.3 MB in the end (delta: -31.0 MB). Peak memory consumption was 5.4 MB. Max. memory is 8.0 GB. * RCFGBuilder took 873.01 ms. Allocated memory is still 161.5 MB. Free memory was 142.3 MB in the beginning and 86.3 MB in the end (delta: 56.0 MB). Peak memory consumption was 55.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 32403.81 ms. Allocated memory was 161.5 MB in the beginning and 405.8 MB in the end (delta: 244.3 MB). Free memory was 86.3 MB in the beginning and 244.8 MB in the end (delta: -158.5 MB). Peak memory consumption was 86.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1049]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L998] struct TSLL* null = malloc(sizeof(struct TSLL)); VAL [malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] [L999] null->next = ((void*)0) VAL [malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] [L1000] null->prev = ((void*)0) VAL [malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] [L1001] null->colour = BLACK VAL [malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] [L1003] struct TSLL* list = malloc(sizeof(struct TSLL)); VAL [list={-2:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-2:0}, null={-1:0}] [L1004] list->next = null VAL [list={-2:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-2:0}, null={-1:0}] [L1005] list->prev = null VAL [list={-2:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-2:0}, null={-1:0}] [L1006] list->colour = BLACK VAL [list={-2:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-2:0}, null={-1:0}] [L1008] struct TSLL* end = list; VAL [end={-2:0}, list={-2:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-2:0}, null={-1:0}] [L1011] COND TRUE __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, end={-2:0}, list={-2:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-2:0}, null={-1:0}] [L1014] end->next = malloc(sizeof(struct TSLL)) VAL [end={-2:0}, list={-2:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-2:0}, malloc(sizeof(struct TSLL))={-3:0}, null={-1:0}] [L1015] EXPR end->next VAL [end={-2:0}, end->next={-3:0}, list={-2:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-3:0}, malloc(sizeof(struct TSLL))={-2:0}, null={-1:0}] [L1015] end->next->prev = end VAL [end={-2:0}, end->next={-3:0}, list={-2:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-2:0}, malloc(sizeof(struct TSLL))={-3:0}, null={-1:0}] [L1016] EXPR end->next VAL [end={-2:0}, end->next={-3:0}, list={-2:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-3:0}, malloc(sizeof(struct TSLL))={-2:0}, null={-1:0}] [L1016] end = end->next VAL [end={-3:0}, end->next={-3:0}, list={-2:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-3:0}, malloc(sizeof(struct TSLL))={-2:0}, null={-1:0}] [L1017] end->next = null VAL [end={-3:0}, list={-2:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-3:0}, malloc(sizeof(struct TSLL))={-2:0}, null={-1:0}] [L1019] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, end={-3:0}, list={-2:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-2:0}, malloc(sizeof(struct TSLL))={-3:0}, null={-1:0}] [L1025] end->colour = RED VAL [end={-3:0}, list={-2:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-3:0}, malloc(sizeof(struct TSLL))={-2:0}, null={-1:0}] [L1026] end->next = malloc(sizeof(struct TSLL)) VAL [end={-3:0}, list={-2:0}, malloc(sizeof(struct TSLL))={-4:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-3:0}, malloc(sizeof(struct TSLL))={-2:0}, null={-1:0}] [L1027] EXPR end->next VAL [end={-3:0}, end->next={-4:0}, list={-2:0}, malloc(sizeof(struct TSLL))={-4:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-2:0}, malloc(sizeof(struct TSLL))={-3:0}, null={-1:0}] [L1027] end->next->prev = end VAL [end={-3:0}, end->next={-4:0}, list={-2:0}, malloc(sizeof(struct TSLL))={-4:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-2:0}, malloc(sizeof(struct TSLL))={-3:0}, null={-1:0}] [L1028] EXPR end->next VAL [end={-3:0}, end->next={-4:0}, list={-2:0}, malloc(sizeof(struct TSLL))={-4:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-2:0}, malloc(sizeof(struct TSLL))={-3:0}, null={-1:0}] [L1028] end = end->next VAL [end={-4:0}, end->next={-4:0}, list={-2:0}, malloc(sizeof(struct TSLL))={-4:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-2:0}, malloc(sizeof(struct TSLL))={-3:0}, null={-1:0}] [L1029] end->next = null VAL [end={-4:0}, list={-2:0}, malloc(sizeof(struct TSLL))={-4:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-3:0}, malloc(sizeof(struct TSLL))={-2:0}, null={-1:0}] [L1030] end->colour = BLACK VAL [end={-4:0}, list={-2:0}, malloc(sizeof(struct TSLL))={-4:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-3:0}, malloc(sizeof(struct TSLL))={-2:0}, null={-1:0}] [L1032] EXPR end->colour VAL [end={-4:0}, end->colour=1, list={-2:0}, malloc(sizeof(struct TSLL))={-4:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-2:0}, malloc(sizeof(struct TSLL))={-3:0}, null={-1:0}] [L1032] COND FALSE !(!(BLACK == end->colour)) VAL [end={-4:0}, end->colour=1, list={-2:0}, malloc(sizeof(struct TSLL))={-4:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-3:0}, malloc(sizeof(struct TSLL))={-2:0}, null={-1:0}] [L1033] EXPR end->next VAL [end={-4:0}, end->next={-1:0}, list={-2:0}, malloc(sizeof(struct TSLL))={-4:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-2:0}, malloc(sizeof(struct TSLL))={-3:0}, null={-1:0}] [L1033] COND FALSE !(!(null == end->next)) VAL [end={-4:0}, end->next={-1:0}, list={-2:0}, malloc(sizeof(struct TSLL))={-4:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-2:0}, malloc(sizeof(struct TSLL))={-3:0}, null={-1:0}] [L1034] COND FALSE !(!(null != end)) VAL [end={-4:0}, list={-2:0}, malloc(sizeof(struct TSLL))={-4:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-3:0}, malloc(sizeof(struct TSLL))={-2:0}, null={-1:0}] [L1011] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, end={-4:0}, list={-2:0}, malloc(sizeof(struct TSLL))={-4:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-2:0}, malloc(sizeof(struct TSLL))={-3:0}, null={-1:0}] [L1037] end = null VAL [end={-1:0}, list={-2:0}, malloc(sizeof(struct TSLL))={-4:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-2:0}, malloc(sizeof(struct TSLL))={-3:0}, null={-1:0}] [L1038] end = list VAL [end={-2:0}, list={-2:0}, malloc(sizeof(struct TSLL))={-4:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-2:0}, malloc(sizeof(struct TSLL))={-3:0}, null={-1:0}] [L1041] COND FALSE !(!(null != end)) VAL [end={-2:0}, list={-2:0}, malloc(sizeof(struct TSLL))={-4:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-3:0}, malloc(sizeof(struct TSLL))={-2:0}, null={-1:0}] [L1042] EXPR end->colour VAL [end={-2:0}, end->colour=1, list={-2:0}, malloc(sizeof(struct TSLL))={-4:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-3:0}, malloc(sizeof(struct TSLL))={-2:0}, null={-1:0}] [L1042] COND FALSE !(!(BLACK == end->colour)) VAL [end={-2:0}, end->colour=1, list={-2:0}, malloc(sizeof(struct TSLL))={-4:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-3:0}, malloc(sizeof(struct TSLL))={-2:0}, null={-1:0}] [L1043] COND TRUE null != end VAL [end={-2:0}, list={-2:0}, malloc(sizeof(struct TSLL))={-4:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-2:0}, malloc(sizeof(struct TSLL))={-3:0}, null={-1:0}] [L1045] EXPR end->colour VAL [end={-2:0}, end->colour=1, list={-2:0}, malloc(sizeof(struct TSLL))={-4:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-3:0}, malloc(sizeof(struct TSLL))={-2:0}, null={-1:0}] [L1045] COND FALSE !(RED == end->colour) VAL [end={-2:0}, end->colour=1, list={-2:0}, malloc(sizeof(struct TSLL))={-4:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-2:0}, malloc(sizeof(struct TSLL))={-3:0}, null={-1:0}] [L1052] EXPR end->next VAL [end={-2:0}, end->next={-3:0}, list={-2:0}, malloc(sizeof(struct TSLL))={-4:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-2:0}, malloc(sizeof(struct TSLL))={-3:0}, null={-1:0}] [L1052] end = end->next VAL [end={-3:0}, end->next={-3:0}, list={-2:0}, malloc(sizeof(struct TSLL))={-4:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-3:0}, malloc(sizeof(struct TSLL))={-2:0}, null={-1:0}] [L1043] COND TRUE null != end VAL [end={-3:0}, list={-2:0}, malloc(sizeof(struct TSLL))={-4:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-2:0}, malloc(sizeof(struct TSLL))={-3:0}, null={-1:0}] [L1045] EXPR end->colour VAL [end={-3:0}, end->colour=0, list={-2:0}, malloc(sizeof(struct TSLL))={-4:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-3:0}, malloc(sizeof(struct TSLL))={-2:0}, null={-1:0}] [L1045] COND TRUE RED == end->colour VAL [end={-3:0}, end->colour=0, list={-2:0}, malloc(sizeof(struct TSLL))={-4:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-2:0}, malloc(sizeof(struct TSLL))={-3:0}, null={-1:0}] [L1047] EXPR end->next VAL [end={-3:0}, end->next={-4:0}, list={-2:0}, malloc(sizeof(struct TSLL))={-4:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-3:0}, malloc(sizeof(struct TSLL))={-2:0}, null={-1:0}] [L1047] end = end->next VAL [end={-4:0}, end->next={-4:0}, list={-2:0}, malloc(sizeof(struct TSLL))={-4:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-3:0}, malloc(sizeof(struct TSLL))={-2:0}, null={-1:0}] [L1048] COND FALSE !(!(null != end)) VAL [end={-4:0}, list={-2:0}, malloc(sizeof(struct TSLL))={-4:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-2:0}, malloc(sizeof(struct TSLL))={-3:0}, null={-1:0}] [L1049] EXPR end->colour VAL [end={-4:0}, end->colour=1, list={-2:0}, malloc(sizeof(struct TSLL))={-4:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-2:0}, malloc(sizeof(struct TSLL))={-3:0}, null={-1:0}] [L1049] COND TRUE !(BLACK != end->colour) VAL [end={-4:0}, end->colour=1, list={-2:0}, malloc(sizeof(struct TSLL))={-4:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-2:0}, malloc(sizeof(struct TSLL))={-3:0}, null={-1:0}] [L1049] reach_error() VAL [end={-4:0}, list={-2:0}, malloc(sizeof(struct TSLL))={-4:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={-3:0}, malloc(sizeof(struct TSLL))={-2:0}, null={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 139 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 32.2s, OverallIterations: 18, TraceHistogramMax: 3, AutomataDifference: 22.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1371 SDtfs, 7457 SDslu, 7793 SDs, 0 SdLazy, 9026 SolverSat, 1178 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 516 GetRequests, 60 SyntacticMatches, 17 SemanticMatches, 439 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2724 ImplicationChecksByTransitivity, 16.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=209occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 17 MinimizatonAttempts, 522 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 8.1s InterpolantComputationTime, 1076 NumberOfCodeBlocks, 1076 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 970 ConstructedInterpolants, 0 QuantifiedInterpolants, 904596 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 8 PerfectInterpolantSequences, 13/110 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...