/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/list-ext3-properties/dll_nullified-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 23:09:12,457 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 23:09:12,460 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 23:09:12,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 23:09:12,494 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 23:09:12,496 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 23:09:12,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 23:09:12,500 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 23:09:12,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 23:09:12,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 23:09:12,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 23:09:12,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 23:09:12,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 23:09:12,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 23:09:12,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 23:09:12,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 23:09:12,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 23:09:12,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 23:09:12,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 23:09:12,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 23:09:12,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 23:09:12,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 23:09:12,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 23:09:12,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 23:09:12,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 23:09:12,542 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 23:09:12,543 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 23:09:12,544 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 23:09:12,544 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 23:09:12,546 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 23:09:12,546 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 23:09:12,547 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 23:09:12,548 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 23:09:12,549 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 23:09:12,550 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 23:09:12,550 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 23:09:12,551 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 23:09:12,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 23:09:12,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 23:09:12,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 23:09:12,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 23:09:12,555 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 23:09:12,568 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 23:09:12,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 23:09:12,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 23:09:12,570 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 23:09:12,571 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 23:09:12,571 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 23:09:12,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 23:09:12,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 23:09:12,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 23:09:12,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 23:09:12,573 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 23:09:12,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 23:09:12,573 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 23:09:12,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 23:09:12,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 23:09:12,574 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 23:09:12,574 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 23:09:12,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 23:09:12,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 23:09:12,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 23:09:12,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 23:09:12,576 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 23:09:12,576 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 23:09:12,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 23:09:12,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 23:09:12,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 23:09:12,977 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 23:09:12,978 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 23:09:12,979 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2021-02-23 23:09:13,067 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a59d3e0e0/35390ea43db646c79003c9d7ef657283/FLAGd7e82b268 [2021-02-23 23:09:13,813 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 23:09:13,814 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2021-02-23 23:09:13,838 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a59d3e0e0/35390ea43db646c79003c9d7ef657283/FLAGd7e82b268 [2021-02-23 23:09:14,117 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a59d3e0e0/35390ea43db646c79003c9d7ef657283 [2021-02-23 23:09:14,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 23:09:14,134 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 23:09:14,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 23:09:14,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 23:09:14,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 23:09:14,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:09:14" (1/1) ... [2021-02-23 23:09:14,148 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d15e4ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:09:14, skipping insertion in model container [2021-02-23 23:09:14,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:09:14" (1/1) ... [2021-02-23 23:09:14,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 23:09:14,228 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 23:09:14,522 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i[24046,24059] [2021-02-23 23:09:14,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:09:14,539 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 23:09:14,586 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i[24046,24059] [2021-02-23 23:09:14,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:09:14,653 INFO L208 MainTranslator]: Completed translation [2021-02-23 23:09:14,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:09:14 WrapperNode [2021-02-23 23:09:14,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 23:09:14,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 23:09:14,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 23:09:14,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 23:09:14,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:09:14" (1/1) ... [2021-02-23 23:09:14,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:09:14" (1/1) ... [2021-02-23 23:09:14,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:09:14" (1/1) ... [2021-02-23 23:09:14,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:09:14" (1/1) ... [2021-02-23 23:09:14,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:09:14" (1/1) ... [2021-02-23 23:09:14,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:09:14" (1/1) ... [2021-02-23 23:09:14,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:09:14" (1/1) ... [2021-02-23 23:09:14,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 23:09:14,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 23:09:14,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 23:09:14,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 23:09:14,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:09:14" (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 23:09:14,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 23:09:14,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 23:09:14,893 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 23:09:14,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-23 23:09:14,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-23 23:09:14,894 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-02-23 23:09:14,894 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2021-02-23 23:09:14,894 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 23:09:14,894 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 23:09:14,894 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 23:09:14,895 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 23:09:14,895 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 23:09:14,895 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 23:09:14,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 23:09:14,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 23:09:14,895 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-23 23:09:14,896 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-23 23:09:14,896 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-23 23:09:14,896 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-23 23:09:14,896 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-23 23:09:14,896 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-23 23:09:14,897 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-23 23:09:14,897 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-23 23:09:14,897 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-23 23:09:14,897 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-23 23:09:14,897 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-23 23:09:14,897 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-23 23:09:14,898 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-23 23:09:14,898 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-23 23:09:14,898 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-23 23:09:14,898 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-23 23:09:14,898 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-23 23:09:14,898 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-23 23:09:14,899 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-23 23:09:14,899 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-23 23:09:14,899 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-23 23:09:14,899 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-23 23:09:14,899 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-23 23:09:14,899 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-23 23:09:14,900 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-23 23:09:14,900 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-23 23:09:14,900 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-23 23:09:14,900 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-23 23:09:14,900 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-23 23:09:14,900 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-23 23:09:14,901 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-23 23:09:14,901 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-23 23:09:14,901 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-23 23:09:14,901 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-23 23:09:14,901 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-23 23:09:14,901 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-23 23:09:14,901 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-23 23:09:14,902 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-23 23:09:14,902 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-23 23:09:14,902 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-23 23:09:14,902 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-23 23:09:14,902 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-23 23:09:14,902 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-23 23:09:14,903 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-23 23:09:14,903 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-23 23:09:14,903 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-23 23:09:14,903 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-23 23:09:14,903 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-23 23:09:14,903 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-23 23:09:14,904 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-23 23:09:14,904 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-23 23:09:14,904 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-23 23:09:14,904 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 23:09:14,904 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-23 23:09:14,904 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-23 23:09:14,904 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 23:09:14,905 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-23 23:09:14,905 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-23 23:09:14,905 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-23 23:09:14,905 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-23 23:09:14,905 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-23 23:09:14,905 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-23 23:09:14,906 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-23 23:09:14,906 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-23 23:09:14,906 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-23 23:09:14,906 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-23 23:09:14,906 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-23 23:09:14,906 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-23 23:09:14,907 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-23 23:09:14,907 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-23 23:09:14,907 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-23 23:09:14,907 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-23 23:09:14,907 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-23 23:09:14,907 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-23 23:09:14,908 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-23 23:09:14,908 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-23 23:09:14,908 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-23 23:09:14,908 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-23 23:09:14,908 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-23 23:09:14,908 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-23 23:09:14,908 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-23 23:09:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-23 23:09:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-23 23:09:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-23 23:09:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-23 23:09:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-23 23:09:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-23 23:09:14,910 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-23 23:09:14,910 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-23 23:09:14,910 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-23 23:09:14,910 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-23 23:09:14,910 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-23 23:09:14,910 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-23 23:09:14,911 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-23 23:09:14,911 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-23 23:09:14,911 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-23 23:09:14,911 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-23 23:09:14,911 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-23 23:09:14,911 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-23 23:09:14,911 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-23 23:09:14,912 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-23 23:09:14,912 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-23 23:09:14,912 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-23 23:09:14,912 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-23 23:09:14,912 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-02-23 23:09:14,912 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2021-02-23 23:09:14,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 23:09:14,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 23:09:14,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 23:09:14,913 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 23:09:14,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 23:09:14,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 23:09:14,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 23:09:14,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 23:09:14,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 23:09:14,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 23:09:15,483 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-02-23 23:09:15,775 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 23:09:15,775 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-23 23:09:15,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:09:15 BoogieIcfgContainer [2021-02-23 23:09:15,778 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 23:09:15,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 23:09:15,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 23:09:15,784 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 23:09:15,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 11:09:14" (1/3) ... [2021-02-23 23:09:15,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59805ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:09:15, skipping insertion in model container [2021-02-23 23:09:15,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:09:14" (2/3) ... [2021-02-23 23:09:15,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59805ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:09:15, skipping insertion in model container [2021-02-23 23:09:15,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:09:15" (3/3) ... [2021-02-23 23:09:15,788 INFO L111 eAbstractionObserver]: Analyzing ICFG dll_nullified-1.i [2021-02-23 23:09:15,797 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 23:09:15,803 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 23:09:15,825 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 23:09:15,852 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 23:09:15,852 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 23:09:15,852 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 23:09:15,852 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 23:09:15,853 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 23:09:15,853 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 23:09:15,853 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 23:09:15,853 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 23:09:15,872 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states. [2021-02-23 23:09:15,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-23 23:09:15,885 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:09:15,886 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] [2021-02-23 23:09:15,887 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:09:15,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:09:15,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1014847540, now seen corresponding path program 1 times [2021-02-23 23:09:15,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:09:15,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360022603] [2021-02-23 23:09:15,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:09:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:16,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:16,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:16,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:16,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:09:16,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:16,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:16,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:09:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:16,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:16,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:16,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-23 23:09:16,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:16,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:16,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:09:16,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:16,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:09:16,302 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 23:09:16,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360022603] [2021-02-23 23:09:16,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:09:16,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 23:09:16,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839697452] [2021-02-23 23:09:16,316 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 23:09:16,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:09:16,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 23:09:16,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-23 23:09:16,340 INFO L87 Difference]: Start difference. First operand 106 states. Second operand 7 states. [2021-02-23 23:09:16,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:09:16,953 INFO L93 Difference]: Finished difference Result 195 states and 223 transitions. [2021-02-23 23:09:16,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 23:09:16,955 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2021-02-23 23:09:16,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:09:16,965 INFO L225 Difference]: With dead ends: 195 [2021-02-23 23:09:16,965 INFO L226 Difference]: Without dead ends: 116 [2021-02-23 23:09:16,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-02-23 23:09:16,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-02-23 23:09:17,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 97. [2021-02-23 23:09:17,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2021-02-23 23:09:17,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 106 transitions. [2021-02-23 23:09:17,029 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 106 transitions. Word has length 36 [2021-02-23 23:09:17,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:09:17,029 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 106 transitions. [2021-02-23 23:09:17,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 23:09:17,030 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 106 transitions. [2021-02-23 23:09:17,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-02-23 23:09:17,032 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:09:17,033 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] [2021-02-23 23:09:17,033 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 23:09:17,033 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:09:17,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:09:17,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1257517353, now seen corresponding path program 1 times [2021-02-23 23:09:17,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:09:17,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205337090] [2021-02-23 23:09:17,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:09:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:17,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:17,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:17,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:17,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:09:17,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:17,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:17,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:09:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:17,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:17,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:17,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-23 23:09:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:17,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:17,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:09:17,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:17,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:09:17,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:17,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:09:17,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:17,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:09:17,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:09:17,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205337090] [2021-02-23 23:09:17,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:09:17,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-02-23 23:09:17,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40338684] [2021-02-23 23:09:17,423 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 23:09:17,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:09:17,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 23:09:17,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 23:09:17,425 INFO L87 Difference]: Start difference. First operand 97 states and 106 transitions. Second operand 9 states. [2021-02-23 23:09:17,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:09:17,934 INFO L93 Difference]: Finished difference Result 197 states and 217 transitions. [2021-02-23 23:09:17,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 23:09:17,934 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2021-02-23 23:09:17,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:09:17,937 INFO L225 Difference]: With dead ends: 197 [2021-02-23 23:09:17,937 INFO L226 Difference]: Without dead ends: 137 [2021-02-23 23:09:17,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-02-23 23:09:17,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-02-23 23:09:17,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 118. [2021-02-23 23:09:17,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2021-02-23 23:09:17,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 129 transitions. [2021-02-23 23:09:17,962 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 129 transitions. Word has length 55 [2021-02-23 23:09:17,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:09:17,963 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 129 transitions. [2021-02-23 23:09:17,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 23:09:17,963 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 129 transitions. [2021-02-23 23:09:17,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-02-23 23:09:17,969 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:09:17,969 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-23 23:09:17,969 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 23:09:17,969 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:09:17,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:09:17,970 INFO L82 PathProgramCache]: Analyzing trace with hash 2021621228, now seen corresponding path program 2 times [2021-02-23 23:09:17,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:09:17,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4713372] [2021-02-23 23:09:17,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:09:18,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:18,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:18,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:18,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:18,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:18,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:09:18,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:18,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:18,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:18,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-23 23:09:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:18,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:18,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:18,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:18,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:09:18,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:18,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:09:18,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:18,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:09:18,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:18,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:18,249 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:09:18,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4713372] [2021-02-23 23:09:18,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:09:18,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-02-23 23:09:18,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507154950] [2021-02-23 23:09:18,251 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 23:09:18,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:09:18,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 23:09:18,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-23 23:09:18,252 INFO L87 Difference]: Start difference. First operand 118 states and 129 transitions. Second operand 7 states. [2021-02-23 23:09:18,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:09:18,564 INFO L93 Difference]: Finished difference Result 199 states and 219 transitions. [2021-02-23 23:09:18,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 23:09:18,565 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2021-02-23 23:09:18,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:09:18,567 INFO L225 Difference]: With dead ends: 199 [2021-02-23 23:09:18,567 INFO L226 Difference]: Without dead ends: 118 [2021-02-23 23:09:18,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-02-23 23:09:18,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-02-23 23:09:18,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-02-23 23:09:18,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2021-02-23 23:09:18,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 128 transitions. [2021-02-23 23:09:18,585 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 128 transitions. Word has length 74 [2021-02-23 23:09:18,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:09:18,586 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 128 transitions. [2021-02-23 23:09:18,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 23:09:18,586 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 128 transitions. [2021-02-23 23:09:18,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-02-23 23:09:18,589 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:09:18,589 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-23 23:09:18,589 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 23:09:18,589 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:09:18,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:09:18,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1186913634, now seen corresponding path program 1 times [2021-02-23 23:09:18,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:09:18,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722823730] [2021-02-23 23:09:18,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:09:18,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:18,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:18,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:18,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:18,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:09:18,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:18,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:18,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:09:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:18,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:18,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:18,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-23 23:09:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:18,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:18,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:09:18,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:18,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:09:18,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:18,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:09:18,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:18,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:09:18,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:18,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:09:18,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:18,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:09:18,843 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:09:18,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722823730] [2021-02-23 23:09:18,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:09:18,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-02-23 23:09:18,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531756987] [2021-02-23 23:09:18,844 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 23:09:18,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:09:18,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 23:09:18,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-02-23 23:09:18,846 INFO L87 Difference]: Start difference. First operand 118 states and 128 transitions. Second operand 11 states. [2021-02-23 23:09:19,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:09:19,272 INFO L93 Difference]: Finished difference Result 218 states and 237 transitions. [2021-02-23 23:09:19,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 23:09:19,272 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 75 [2021-02-23 23:09:19,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:09:19,274 INFO L225 Difference]: With dead ends: 218 [2021-02-23 23:09:19,275 INFO L226 Difference]: Without dead ends: 158 [2021-02-23 23:09:19,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-02-23 23:09:19,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-02-23 23:09:19,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 139. [2021-02-23 23:09:19,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2021-02-23 23:09:19,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 150 transitions. [2021-02-23 23:09:19,296 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 150 transitions. Word has length 75 [2021-02-23 23:09:19,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:09:19,297 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 150 transitions. [2021-02-23 23:09:19,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 23:09:19,297 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 150 transitions. [2021-02-23 23:09:19,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-02-23 23:09:19,299 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:09:19,299 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-02-23 23:09:19,299 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 23:09:19,299 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:09:19,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:09:19,300 INFO L82 PathProgramCache]: Analyzing trace with hash 896284781, now seen corresponding path program 2 times [2021-02-23 23:09:19,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:09:19,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393266463] [2021-02-23 23:09:19,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:09:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:19,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:19,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:19,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:19,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:09:19,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:19,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:19,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:09:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:19,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:19,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:19,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-23 23:09:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:19,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:19,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:09:19,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:19,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:09:19,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:19,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:09:19,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:19,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:09:19,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:19,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:09:19,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:19,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:09:19,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:19,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:09:19,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:19,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:09:19,657 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:09:19,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393266463] [2021-02-23 23:09:19,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:09:19,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-02-23 23:09:19,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607339548] [2021-02-23 23:09:19,660 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-23 23:09:19,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:09:19,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-23 23:09:19,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-02-23 23:09:19,662 INFO L87 Difference]: Start difference. First operand 139 states and 150 transitions. Second operand 13 states. [2021-02-23 23:09:20,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:09:20,118 INFO L93 Difference]: Finished difference Result 239 states and 259 transitions. [2021-02-23 23:09:20,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-23 23:09:20,119 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 95 [2021-02-23 23:09:20,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:09:20,121 INFO L225 Difference]: With dead ends: 239 [2021-02-23 23:09:20,121 INFO L226 Difference]: Without dead ends: 179 [2021-02-23 23:09:20,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2021-02-23 23:09:20,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-02-23 23:09:20,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 160. [2021-02-23 23:09:20,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2021-02-23 23:09:20,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 172 transitions. [2021-02-23 23:09:20,143 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 172 transitions. Word has length 95 [2021-02-23 23:09:20,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:09:20,143 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 172 transitions. [2021-02-23 23:09:20,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-23 23:09:20,143 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 172 transitions. [2021-02-23 23:09:20,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-02-23 23:09:20,145 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:09:20,145 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:09:20,146 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 23:09:20,146 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:09:20,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:09:20,146 INFO L82 PathProgramCache]: Analyzing trace with hash -177168392, now seen corresponding path program 3 times [2021-02-23 23:09:20,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:09:20,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579905644] [2021-02-23 23:09:20,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:09:20,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:20,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:20,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:20,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:20,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:09:20,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:20,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:20,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:09:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:20,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:20,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:20,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-23 23:09:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:20,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:20,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:09:20,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:20,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:09:20,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:20,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:09:20,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:20,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:09:20,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:20,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:09:20,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:20,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:09:20,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:20,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:09:20,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:20,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:09:20,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:20,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:09:20,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:20,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:09:20,493 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:09:20,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579905644] [2021-02-23 23:09:20,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:09:20,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-02-23 23:09:20,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291864727] [2021-02-23 23:09:20,494 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-23 23:09:20,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:09:20,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-23 23:09:20,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-02-23 23:09:20,496 INFO L87 Difference]: Start difference. First operand 160 states and 172 transitions. Second operand 15 states. [2021-02-23 23:09:21,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:09:21,001 INFO L93 Difference]: Finished difference Result 260 states and 281 transitions. [2021-02-23 23:09:21,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-02-23 23:09:21,001 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 115 [2021-02-23 23:09:21,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:09:21,005 INFO L225 Difference]: With dead ends: 260 [2021-02-23 23:09:21,005 INFO L226 Difference]: Without dead ends: 200 [2021-02-23 23:09:21,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2021-02-23 23:09:21,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-02-23 23:09:21,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 181. [2021-02-23 23:09:21,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2021-02-23 23:09:21,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 194 transitions. [2021-02-23 23:09:21,061 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 194 transitions. Word has length 115 [2021-02-23 23:09:21,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:09:21,062 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 194 transitions. [2021-02-23 23:09:21,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-23 23:09:21,062 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 194 transitions. [2021-02-23 23:09:21,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-02-23 23:09:21,065 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:09:21,071 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:09:21,072 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 23:09:21,072 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:09:21,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:09:21,074 INFO L82 PathProgramCache]: Analyzing trace with hash -313994237, now seen corresponding path program 4 times [2021-02-23 23:09:21,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:09:21,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185867595] [2021-02-23 23:09:21,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:09:21,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:21,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:21,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:21,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:21,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:09:21,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:21,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:09:21,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:21,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:09:21,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:21,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-23 23:09:21,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:21,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:21,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:09:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:21,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:21,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:21,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-23 23:09:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:21,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:21,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:21,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:21,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:09:21,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:21,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:09:21,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:21,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:09:21,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:21,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:09:21,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:21,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:09:21,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:21,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 23:09:21,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:21,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 23:09:21,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:21,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 23:09:21,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:21,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 23:09:21,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:21,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 23:09:21,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:21,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 23:09:21,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:21,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:09:21,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:21,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:09:21,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:21,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:09:21,781 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 118 proven. 19 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-02-23 23:09:21,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185867595] [2021-02-23 23:09:21,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:09:21,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-02-23 23:09:21,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529497352] [2021-02-23 23:09:21,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-23 23:09:21,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:09:21,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-23 23:09:21,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2021-02-23 23:09:21,785 INFO L87 Difference]: Start difference. First operand 181 states and 194 transitions. Second operand 17 states. [2021-02-23 23:09:22,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:09:22,669 INFO L93 Difference]: Finished difference Result 312 states and 338 transitions. [2021-02-23 23:09:22,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-23 23:09:22,670 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 135 [2021-02-23 23:09:22,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:09:22,672 INFO L225 Difference]: With dead ends: 312 [2021-02-23 23:09:22,672 INFO L226 Difference]: Without dead ends: 257 [2021-02-23 23:09:22,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2021-02-23 23:09:22,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-02-23 23:09:22,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 187. [2021-02-23 23:09:22,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2021-02-23 23:09:22,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 201 transitions. [2021-02-23 23:09:22,712 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 201 transitions. Word has length 135 [2021-02-23 23:09:22,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:09:22,713 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 201 transitions. [2021-02-23 23:09:22,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-23 23:09:22,713 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 201 transitions. [2021-02-23 23:09:22,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-02-23 23:09:22,718 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:09:22,718 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:09:22,718 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 23:09:22,718 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:09:22,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:09:22,719 INFO L82 PathProgramCache]: Analyzing trace with hash -696625984, now seen corresponding path program 1 times [2021-02-23 23:09:22,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:09:22,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004225518] [2021-02-23 23:09:22,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:09:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:22,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:22,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:22,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:22,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 23:09:22,946 WARN L141 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-02-23 23:09:22,947 WARN L147 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size 13 [2021-02-23 23:09:22,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:22,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:09:22,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:22,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-23 23:09:22,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:22,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-23 23:09:22,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:22,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:23,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:09:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:23,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:23,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:23,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-23 23:09:23,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:23,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:23,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:23,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:23,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:09:23,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:23,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:09:23,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:23,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:09:23,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:23,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 23:09:23,246 WARN L141 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-02-23 23:09:23,247 WARN L147 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size 8 [2021-02-23 23:09:23,266 WARN L141 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size [2021-02-23 23:09:23,267 WARN L147 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size 17 [2021-02-23 23:09:23,291 WARN L141 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-02-23 23:09:23,292 WARN L147 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size 22 [2021-02-23 23:09:23,314 WARN L141 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size [2021-02-23 23:09:23,316 WARN L147 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size 17 [2021-02-23 23:09:23,320 WARN L141 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size [2021-02-23 23:09:23,321 WARN L147 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size 17 [2021-02-23 23:09:23,322 WARN L141 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size [2021-02-23 23:09:23,323 WARN L147 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size 17 [2021-02-23 23:09:23,324 WARN L141 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-02-23 23:09:23,324 WARN L147 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size 13 [2021-02-23 23:09:23,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:23,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 23:09:23,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:23,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 23:09:23,478 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 118 proven. 19 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-02-23 23:09:23,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004225518] [2021-02-23 23:09:23,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:09:23,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-02-23 23:09:23,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749974762] [2021-02-23 23:09:23,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-23 23:09:23,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:09:23,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-23 23:09:23,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-02-23 23:09:23,484 INFO L87 Difference]: Start difference. First operand 187 states and 201 transitions. Second operand 18 states. [2021-02-23 23:09:24,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:09:24,581 INFO L93 Difference]: Finished difference Result 290 states and 314 transitions. [2021-02-23 23:09:24,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-23 23:09:24,582 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 137 [2021-02-23 23:09:24,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:09:24,584 INFO L225 Difference]: With dead ends: 290 [2021-02-23 23:09:24,584 INFO L226 Difference]: Without dead ends: 235 [2021-02-23 23:09:24,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=177, Invalid=1013, Unknown=0, NotChecked=0, Total=1190 [2021-02-23 23:09:24,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-02-23 23:09:24,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 191. [2021-02-23 23:09:24,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2021-02-23 23:09:24,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 205 transitions. [2021-02-23 23:09:24,616 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 205 transitions. Word has length 137 [2021-02-23 23:09:24,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:09:24,617 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 205 transitions. [2021-02-23 23:09:24,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-23 23:09:24,617 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 205 transitions. [2021-02-23 23:09:24,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-02-23 23:09:24,619 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:09:24,619 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:09:24,619 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 23:09:24,619 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:09:24,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:09:24,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1130029170, now seen corresponding path program 1 times [2021-02-23 23:09:24,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:09:24,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041240992] [2021-02-23 23:09:24,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:09:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:24,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:24,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:24,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:24,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:09:24,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:24,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:09:24,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:24,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:09:24,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:24,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-23 23:09:24,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:24,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:24,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:09:24,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:24,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:24,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:24,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-23 23:09:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:24,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:24,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:24,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:24,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:09:24,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:24,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:09:24,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:24,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:09:24,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:24,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:09:24,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:24,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:09:24,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:24,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 23:09:24,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:24,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 23:09:24,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:24,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 23:09:24,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:24,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 23:09:24,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:24,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 23:09:24,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:24,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 23:09:24,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:24,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:09:25,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:25,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:09:25,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:25,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:09:25,123 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 118 proven. 19 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-02-23 23:09:25,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041240992] [2021-02-23 23:09:25,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:09:25,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-02-23 23:09:25,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81363658] [2021-02-23 23:09:25,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-23 23:09:25,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:09:25,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-23 23:09:25,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2021-02-23 23:09:25,126 INFO L87 Difference]: Start difference. First operand 191 states and 205 transitions. Second operand 17 states. [2021-02-23 23:09:25,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:09:25,981 INFO L93 Difference]: Finished difference Result 285 states and 305 transitions. [2021-02-23 23:09:25,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-23 23:09:25,982 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 139 [2021-02-23 23:09:25,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:09:25,983 INFO L225 Difference]: With dead ends: 285 [2021-02-23 23:09:25,984 INFO L226 Difference]: Without dead ends: 257 [2021-02-23 23:09:25,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2021-02-23 23:09:25,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-02-23 23:09:26,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 199. [2021-02-23 23:09:26,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2021-02-23 23:09:26,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 213 transitions. [2021-02-23 23:09:26,033 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 213 transitions. Word has length 139 [2021-02-23 23:09:26,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:09:26,034 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 213 transitions. [2021-02-23 23:09:26,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-23 23:09:26,034 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 213 transitions. [2021-02-23 23:09:26,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-02-23 23:09:26,036 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:09:26,036 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:09:26,036 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 23:09:26,036 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:09:26,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:09:26,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1346712291, now seen corresponding path program 1 times [2021-02-23 23:09:26,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:09:26,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917375570] [2021-02-23 23:09:26,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:09:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 23:09:26,128 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 23:09:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 23:09:26,209 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 23:09:26,291 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 23:09:26,291 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 23:09:26,292 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 23:09:26,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 11:09:26 BoogieIcfgContainer [2021-02-23 23:09:26,409 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 23:09:26,410 INFO L168 Benchmark]: Toolchain (without parser) took 12288.30 ms. Allocated memory was 151.0 MB in the beginning and 323.0 MB in the end (delta: 172.0 MB). Free memory was 125.3 MB in the beginning and 255.6 MB in the end (delta: -130.3 MB). Peak memory consumption was 42.0 MB. Max. memory is 8.0 GB. [2021-02-23 23:09:26,411 INFO L168 Benchmark]: CDTParser took 1.07 ms. Allocated memory is still 151.0 MB. Free memory is still 123.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 23:09:26,411 INFO L168 Benchmark]: CACSL2BoogieTranslator took 514.53 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 102.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-23 23:09:26,411 INFO L168 Benchmark]: Boogie Preprocessor took 74.88 ms. Allocated memory is still 151.0 MB. Free memory was 102.2 MB in the beginning and 99.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 23:09:26,412 INFO L168 Benchmark]: RCFGBuilder took 1046.79 ms. Allocated memory is still 151.0 MB. Free memory was 99.4 MB in the beginning and 85.6 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 8.0 GB. [2021-02-23 23:09:26,412 INFO L168 Benchmark]: TraceAbstraction took 10629.68 ms. Allocated memory was 151.0 MB in the beginning and 323.0 MB in the end (delta: 172.0 MB). Free memory was 85.0 MB in the beginning and 255.6 MB in the end (delta: -170.6 MB). Peak memory consumption was 1.9 MB. Max. memory is 8.0 GB. [2021-02-23 23:09:26,414 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.07 ms. Allocated memory is still 151.0 MB. Free memory is still 123.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 514.53 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 102.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 74.88 ms. Allocated memory is still 151.0 MB. Free memory was 102.2 MB in the beginning and 99.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1046.79 ms. Allocated memory is still 151.0 MB. Free memory was 99.4 MB in the beginning and 85.6 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 10629.68 ms. Allocated memory was 151.0 MB in the beginning and 323.0 MB in the end (delta: 172.0 MB). Free memory was 85.0 MB in the beginning and 255.6 MB in the end (delta: -170.6 MB). Peak memory consumption was 1.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 616]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L599] const int len = 5; VAL [len=5] [L600] CALL, EXPR dll_create(len) VAL [\old(len)=5] [L579] DLL head = ((void *)0); VAL [\old(len)=5, head={0:0}, len=5] [L580] COND TRUE len > 0 VAL [\old(len)=5, head={0:0}, len=5] [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); VAL [\old(len)=5, head={0:0}, len=5, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L582] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={0:0}, len=5, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L585] new_head->data_0 = 0 VAL [\old(len)=5, head={0:0}, len=5, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L586] new_head->data_1 = 0 VAL [\old(len)=5, head={0:0}, len=5, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=5, __VERIFIER_nondet_int() == len? 1 : 0=1, head={0:0}, len=5, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=5, __VERIFIER_nondet_int() == len? 1 : 0=1, head={0:0}, len=5, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L588] new_head->next = head VAL [\old(len)=5, head={0:0}, len=5, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L589] new_head->prev = ((void *)0) VAL [\old(len)=5, head={0:0}, len=5, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L590] COND FALSE !(\read(head)) VAL [\old(len)=5, head={0:0}, len=5, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L593] head = new_head VAL [\old(len)=5, head={-1:0}, len=5, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L594] len-- VAL [\old(len)=5, head={-1:0}, len=4, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L580] COND TRUE len > 0 VAL [\old(len)=5, head={-1:0}, len=4, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); VAL [\old(len)=5, head={-1:0}, len=4, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L582] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={-1:0}, len=4, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L585] new_head->data_0 = 0 VAL [\old(len)=5, head={-1:0}, len=4, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L586] new_head->data_1 = 0 VAL [\old(len)=5, head={-1:0}, len=4, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=4, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-1:0}, len=4, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=4, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-1:0}, len=4, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L588] new_head->next = head VAL [\old(len)=5, head={-1:0}, len=4, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L589] new_head->prev = ((void *)0) VAL [\old(len)=5, head={-1:0}, len=4, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L590] COND TRUE \read(head) VAL [\old(len)=5, head={-1:0}, len=4, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L591] head->prev = new_head VAL [\old(len)=5, head={-1:0}, len=4, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L593] head = new_head VAL [\old(len)=5, head={-2:0}, len=4, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L594] len-- VAL [\old(len)=5, head={-2:0}, len=3, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L580] COND TRUE len > 0 VAL [\old(len)=5, head={-2:0}, len=3, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); VAL [\old(len)=5, head={-2:0}, len=3, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L582] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={-2:0}, len=3, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L585] new_head->data_0 = 0 VAL [\old(len)=5, head={-2:0}, len=3, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L586] new_head->data_1 = 0 VAL [\old(len)=5, head={-2:0}, len=3, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=3, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-2:0}, len=3, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=3, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-2:0}, len=3, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L588] new_head->next = head VAL [\old(len)=5, head={-2:0}, len=3, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L589] new_head->prev = ((void *)0) VAL [\old(len)=5, head={-2:0}, len=3, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L590] COND TRUE \read(head) VAL [\old(len)=5, head={-2:0}, len=3, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L591] head->prev = new_head VAL [\old(len)=5, head={-2:0}, len=3, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L593] head = new_head VAL [\old(len)=5, head={-3:0}, len=3, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L594] len-- VAL [\old(len)=5, head={-3:0}, len=2, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L580] COND TRUE len > 0 VAL [\old(len)=5, head={-3:0}, len=2, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); VAL [\old(len)=5, head={-3:0}, len=2, malloc(sizeof(struct node))={-4:0}, new_head={-4:0}] [L582] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={-3:0}, len=2, malloc(sizeof(struct node))={-4:0}, new_head={-4:0}] [L585] new_head->data_0 = 0 VAL [\old(len)=5, head={-3:0}, len=2, malloc(sizeof(struct node))={-4:0}, new_head={-4:0}] [L586] new_head->data_1 = 0 VAL [\old(len)=5, head={-3:0}, len=2, malloc(sizeof(struct node))={-4:0}, new_head={-4:0}] [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=2, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-3:0}, len=2, malloc(sizeof(struct node))={-4:0}, new_head={-4:0}] [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=2, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-3:0}, len=2, malloc(sizeof(struct node))={-4:0}, new_head={-4:0}] [L588] new_head->next = head VAL [\old(len)=5, head={-3:0}, len=2, malloc(sizeof(struct node))={-4:0}, new_head={-4:0}] [L589] new_head->prev = ((void *)0) VAL [\old(len)=5, head={-3:0}, len=2, malloc(sizeof(struct node))={-4:0}, new_head={-4:0}] [L590] COND TRUE \read(head) VAL [\old(len)=5, head={-3:0}, len=2, malloc(sizeof(struct node))={-4:0}, new_head={-4:0}] [L591] head->prev = new_head VAL [\old(len)=5, head={-3:0}, len=2, malloc(sizeof(struct node))={-4:0}, new_head={-4:0}] [L593] head = new_head VAL [\old(len)=5, head={-4:0}, len=2, malloc(sizeof(struct node))={-4:0}, new_head={-4:0}] [L594] len-- VAL [\old(len)=5, head={-4:0}, len=1, malloc(sizeof(struct node))={-4:0}, new_head={-4:0}] [L580] COND TRUE len > 0 VAL [\old(len)=5, head={-4:0}, len=1, malloc(sizeof(struct node))={-4:0}, new_head={-4:0}] [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); VAL [\old(len)=5, head={-4:0}, len=1, malloc(sizeof(struct node))={-5:0}, new_head={-5:0}] [L582] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={-4:0}, len=1, malloc(sizeof(struct node))={-5:0}, new_head={-5:0}] [L585] new_head->data_0 = 0 VAL [\old(len)=5, head={-4:0}, len=1, malloc(sizeof(struct node))={-5:0}, new_head={-5:0}] [L586] new_head->data_1 = 0 VAL [\old(len)=5, head={-4:0}, len=1, malloc(sizeof(struct node))={-5:0}, new_head={-5:0}] [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=1, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-4:0}, len=1, malloc(sizeof(struct node))={-5:0}, new_head={-5:0}] [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=1, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-4:0}, len=1, malloc(sizeof(struct node))={-5:0}, new_head={-5:0}] [L588] new_head->next = head VAL [\old(len)=5, head={-4:0}, len=1, malloc(sizeof(struct node))={-5:0}, new_head={-5:0}] [L589] new_head->prev = ((void *)0) VAL [\old(len)=5, head={-4:0}, len=1, malloc(sizeof(struct node))={-5:0}, new_head={-5:0}] [L590] COND TRUE \read(head) VAL [\old(len)=5, head={-4:0}, len=1, malloc(sizeof(struct node))={-5:0}, new_head={-5:0}] [L591] head->prev = new_head VAL [\old(len)=5, head={-4:0}, len=1, malloc(sizeof(struct node))={-5:0}, new_head={-5:0}] [L593] head = new_head VAL [\old(len)=5, head={-5:0}, len=1, malloc(sizeof(struct node))={-5:0}, new_head={-5:0}] [L594] len-- VAL [\old(len)=5, head={-5:0}, len=0, malloc(sizeof(struct node))={-5:0}, new_head={-5:0}] [L580] COND FALSE !(len > 0) VAL [\old(len)=5, head={-5:0}, len=0, malloc(sizeof(struct node))={-5:0}, new_head={-5:0}] [L596] return head; VAL [\old(len)=5, \result={-5:0}, head={-5:0}, len=0, malloc(sizeof(struct node))={-5:0}, new_head={-5:0}] [L600] RET, EXPR dll_create(len) VAL [dll_create(len)={-5:0}, len=5] [L600] DLL head = dll_create(len); VAL [dll_create(len)={-5:0}, head={-5:0}, len=5] [L601] head->next VAL [head={-5:0}, head->next={-4:0}, len=5] [L601] COND TRUE head->next VAL [head={-5:0}, head->next={-4:0}, len=5] [L602] EXPR head->data_0 VAL [head={-5:0}, head->data_0=0, len=5] [L602] EXPR 0 != head->data_0 || 0 != head->data_1 VAL [0 != head->data_0 || 0 != head->data_1=0, head={-5:0}, head->data_0=0, len=5] [L602] EXPR head->data_1 VAL [0 != head->data_0 || 0 != head->data_1=0, head={-5:0}, head->data_0=0, head->data_1=0, len=5] [L602] EXPR 0 != head->data_0 || 0 != head->data_1 VAL [0 != head->data_0 || 0 != head->data_1=0, head={-5:0}, head->data_0=0, head->data_1=0, len=5] [L602] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 VAL [0 != head->data_0 || 0 != head->data_1=0, 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2=0, head={-5:0}, head->data_0=0, head->data_1=0, len=5] [L602] EXPR head->data_2 VAL [0 != head->data_0 || 0 != head->data_1=0, 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2=0, head={-5:0}, head->data_0=0, head->data_1=0, head->data_2=1, len=5] [L602] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 VAL [0 != head->data_0 || 0 != head->data_1=0, 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2=1, head={-5:0}, head->data_0=0, head->data_1=0, head->data_2=1, len=5] [L602] COND TRUE 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 VAL [0 != head->data_0 || 0 != head->data_1=0, 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2=1, head={-5:0}, head->data_0=0, head->data_1=0, head->data_2=1, len=5] [L616] reach_error() VAL [head={-5:0}, len=5] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 122 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.4s, OverallIterations: 10, TraceHistogramMax: 5, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 868 SDtfs, 1372 SDslu, 6108 SDs, 0 SdLazy, 3386 SolverSat, 231 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 254 GetRequests, 57 SyntacticMatches, 11 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=199occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 267 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 1000 NumberOfCodeBlocks, 1000 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 852 ConstructedInterpolants, 0 QuantifiedInterpolants, 361010 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 554/828 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...