/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:10:38,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:10:38,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:10:38,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 18:10:38,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 18:10:38,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 18:10:38,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 18:10:38,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 18:10:38,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 18:10:38,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 18:10:38,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 18:10:38,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 18:10:38,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:10:38,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:10:38,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:10:38,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:10:38,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:10:38,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:10:38,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:10:38,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:10:38,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:10:38,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:10:38,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:10:38,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:10:38,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 18:10:38,704 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 18:10:38,704 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 18:10:38,707 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 18:10:38,708 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 18:10:38,709 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 18:10:38,709 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 18:10:38,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 18:10:38,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 18:10:38,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 18:10:38,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 18:10:38,716 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 18:10:38,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 18:10:38,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 18:10:38,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:10:38,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:10:38,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:10:38,720 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 18:10:38,732 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:10:38,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:10:38,734 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:10:38,734 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:10:38,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:10:38,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:10:38,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:10:38,735 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:10:38,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:10:38,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:10:38,736 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:10:38,736 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:10:38,736 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:10:38,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:10:38,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:10:38,737 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:10:38,737 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:10:38,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:10:38,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:10:38,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:10:38,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:10:38,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:10:38,739 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:10:39,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:10:39,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:10:39,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:10:39,143 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:10:39,144 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:10:39,145 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2021-02-23 18:10:39,238 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00392489b/ce06760aa6a44f6bb559245b65341baa/FLAGfec04c672 [2021-02-23 18:10:40,052 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:10:40,053 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2021-02-23 18:10:40,068 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00392489b/ce06760aa6a44f6bb559245b65341baa/FLAGfec04c672 [2021-02-23 18:10:40,323 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00392489b/ce06760aa6a44f6bb559245b65341baa [2021-02-23 18:10:40,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:10:40,342 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:10:40,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:10:40,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:10:40,350 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:10:40,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:10:40" (1/1) ... [2021-02-23 18:10:40,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2400e87d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:10:40, skipping insertion in model container [2021-02-23 18:10:40,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:10:40" (1/1) ... [2021-02-23 18:10:40,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:10:40,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:10:40,795 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/sll_nondet_insert-1.i[24521,24534] [2021-02-23 18:10:40,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:10:40,808 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:10:40,876 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/sll_nondet_insert-1.i[24521,24534] [2021-02-23 18:10:40,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:10:40,977 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:10:40,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:10:40 WrapperNode [2021-02-23 18:10:40,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:10:40,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:10:40,981 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:10:40,981 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:10:40,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:10:40" (1/1) ... [2021-02-23 18:10:40,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:10:40" (1/1) ... [2021-02-23 18:10:41,041 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:10:40" (1/1) ... [2021-02-23 18:10:41,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:10:40" (1/1) ... [2021-02-23 18:10:41,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:10:40" (1/1) ... [2021-02-23 18:10:41,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:10:40" (1/1) ... [2021-02-23 18:10:41,074 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:10:40" (1/1) ... [2021-02-23 18:10:41,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:10:41,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:10:41,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:10:41,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:10:41,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:10:40" (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 18:10:41,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:10:41,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:10:41,270 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:10:41,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-23 18:10:41,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-23 18:10:41,271 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-02-23 18:10:41,271 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2021-02-23 18:10:41,271 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2021-02-23 18:10:41,272 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2021-02-23 18:10:41,272 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2021-02-23 18:10:41,272 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2021-02-23 18:10:41,273 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:10:41,273 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:10:41,273 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:10:41,273 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 18:10:41,274 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 18:10:41,274 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:10:41,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:10:41,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:10:41,276 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-23 18:10:41,278 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-23 18:10:41,278 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-23 18:10:41,278 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-23 18:10:41,279 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-23 18:10:41,279 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-23 18:10:41,279 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-23 18:10:41,279 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-23 18:10:41,279 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-23 18:10:41,279 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-23 18:10:41,280 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-23 18:10:41,280 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-23 18:10:41,280 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-23 18:10:41,280 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-23 18:10:41,280 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-23 18:10:41,280 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-23 18:10:41,280 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-23 18:10:41,281 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-23 18:10:41,281 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-23 18:10:41,281 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-23 18:10:41,281 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-23 18:10:41,281 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-23 18:10:41,281 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-23 18:10:41,282 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-23 18:10:41,282 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-23 18:10:41,282 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-23 18:10:41,282 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-23 18:10:41,282 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-23 18:10:41,282 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-23 18:10:41,282 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-23 18:10:41,283 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-23 18:10:41,283 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-23 18:10:41,283 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-23 18:10:41,283 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-23 18:10:41,283 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-23 18:10:41,283 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-23 18:10:41,284 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-23 18:10:41,284 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-23 18:10:41,284 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-23 18:10:41,284 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-23 18:10:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-23 18:10:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-23 18:10:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-23 18:10:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-23 18:10:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-23 18:10:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-23 18:10:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-23 18:10:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-23 18:10:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-23 18:10:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-23 18:10:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-23 18:10:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-23 18:10:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 18:10:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-23 18:10:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-23 18:10:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 18:10:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-23 18:10:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-23 18:10:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-23 18:10:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-23 18:10:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-23 18:10:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-23 18:10:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-23 18:10:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-23 18:10:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-23 18:10:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-23 18:10:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-23 18:10:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-23 18:10:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-23 18:10:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-23 18:10:41,293 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-23 18:10:41,293 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-23 18:10:41,293 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-23 18:10:41,294 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-23 18:10:41,294 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-23 18:10:41,294 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-23 18:10:41,294 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-23 18:10:41,294 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-23 18:10:41,295 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-23 18:10:41,295 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-23 18:10:41,295 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-23 18:10:41,295 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-23 18:10:41,295 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-23 18:10:41,295 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-23 18:10:41,295 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-23 18:10:41,296 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-23 18:10:41,296 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-23 18:10:41,296 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-23 18:10:41,296 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-23 18:10:41,296 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-23 18:10:41,296 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-23 18:10:41,296 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-23 18:10:41,297 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-23 18:10:41,297 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-23 18:10:41,297 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-23 18:10:41,297 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-23 18:10:41,297 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-23 18:10:41,297 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-23 18:10:41,297 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-23 18:10:41,298 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-23 18:10:41,298 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-23 18:10:41,298 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-23 18:10:41,298 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-23 18:10:41,298 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-23 18:10:41,299 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-02-23 18:10:41,299 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2021-02-23 18:10:41,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 18:10:41,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 18:10:41,299 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2021-02-23 18:10:41,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 18:10:41,300 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2021-02-23 18:10:41,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:10:41,300 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2021-02-23 18:10:41,300 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2021-02-23 18:10:41,301 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:10:41,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-02-23 18:10:41,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:10:41,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:10:41,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:10:41,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:10:41,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:10:41,877 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-02-23 18:10:42,168 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:10:42,168 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-02-23 18:10:42,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:10:42 BoogieIcfgContainer [2021-02-23 18:10:42,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:10:42,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:10:42,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:10:42,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:10:42,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:10:40" (1/3) ... [2021-02-23 18:10:42,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33297534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:10:42, skipping insertion in model container [2021-02-23 18:10:42,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:10:40" (2/3) ... [2021-02-23 18:10:42,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33297534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:10:42, skipping insertion in model container [2021-02-23 18:10:42,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:10:42" (3/3) ... [2021-02-23 18:10:42,180 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-1.i [2021-02-23 18:10:42,190 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:10:42,199 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:10:42,221 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:10:42,253 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:10:42,253 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:10:42,253 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:10:42,253 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:10:42,253 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:10:42,254 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:10:42,254 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:10:42,254 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:10:42,273 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states. [2021-02-23 18:10:42,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-23 18:10:42,286 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:10:42,287 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:10:42,287 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:10:42,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:10:42,294 INFO L82 PathProgramCache]: Analyzing trace with hash -671159745, now seen corresponding path program 1 times [2021-02-23 18:10:42,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:10:42,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076370996] [2021-02-23 18:10:42,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:10:42,386 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:10:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:42,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:42,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:42,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:42,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:42,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:10:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:42,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:42,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:42,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 18:10:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:42,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:42,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:42,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:42,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:42,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-02-23 18:10:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:42,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:42,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:42,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:42,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:42,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-23 18:10:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:42,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:42,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:42,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:42,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:42,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-23 18:10:42,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:42,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:42,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:42,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:42,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:42,658 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-02-23 18:10:42,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076370996] [2021-02-23 18:10:42,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:10:42,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 18:10:42,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027562284] [2021-02-23 18:10:42,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 18:10:42,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:10:42,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 18:10:42,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 18:10:42,692 INFO L87 Difference]: Start difference. First operand 147 states. Second operand 4 states. [2021-02-23 18:10:43,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:10:43,135 INFO L93 Difference]: Finished difference Result 294 states and 342 transitions. [2021-02-23 18:10:43,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 18:10:43,137 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2021-02-23 18:10:43,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:10:43,148 INFO L225 Difference]: With dead ends: 294 [2021-02-23 18:10:43,149 INFO L226 Difference]: Without dead ends: 127 [2021-02-23 18:10:43,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 18:10:43,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-02-23 18:10:43,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 118. [2021-02-23 18:10:43,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2021-02-23 18:10:43,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 127 transitions. [2021-02-23 18:10:43,221 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 127 transitions. Word has length 58 [2021-02-23 18:10:43,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:10:43,222 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 127 transitions. [2021-02-23 18:10:43,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 18:10:43,222 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 127 transitions. [2021-02-23 18:10:43,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-02-23 18:10:43,226 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:10:43,227 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:10:43,227 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:10:43,227 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:10:43,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:10:43,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1231344721, now seen corresponding path program 1 times [2021-02-23 18:10:43,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:10:43,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506921058] [2021-02-23 18:10:43,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:10:43,236 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:10:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:43,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:43,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:43,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:43,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:43,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:43,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:43,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:43,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:43,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:10:43,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:43,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:43,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:43,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 18:10:43,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:43,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:43,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:43,480 WARN L141 QuantifierPusher]: treesize reduction 7, result has 61.1 percent of original size [2021-02-23 18:10:43,481 WARN L147 QuantifierPusher]: treesize reduction 7, result has 61.1 percent of original size 11 [2021-02-23 18:10:43,497 WARN L141 QuantifierPusher]: treesize reduction 16, result has 54.3 percent of original size [2021-02-23 18:10:43,498 WARN L147 QuantifierPusher]: treesize reduction 16, result has 54.3 percent of original size 19 [2021-02-23 18:10:43,519 WARN L141 QuantifierPusher]: treesize reduction 12, result has 61.3 percent of original size [2021-02-23 18:10:43,521 WARN L147 QuantifierPusher]: treesize reduction 12, result has 61.3 percent of original size 19 [2021-02-23 18:10:43,544 WARN L141 QuantifierPusher]: treesize reduction 12, result has 58.6 percent of original size [2021-02-23 18:10:43,545 WARN L147 QuantifierPusher]: treesize reduction 12, result has 58.6 percent of original size 17 [2021-02-23 18:10:43,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:43,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:10:43,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-02-23 18:10:43,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:43,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:43,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:43,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:43,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:43,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:43,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:43,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-23 18:10:43,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:43,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:43,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:43,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-02-23 18:10:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:43,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:43,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:43,686 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-23 18:10:43,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506921058] [2021-02-23 18:10:43,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:10:43,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-23 18:10:43,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786916892] [2021-02-23 18:10:43,688 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-23 18:10:43,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:10:43,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-23 18:10:43,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-02-23 18:10:43,689 INFO L87 Difference]: Start difference. First operand 118 states and 127 transitions. Second operand 15 states. [2021-02-23 18:10:45,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:10:45,246 INFO L93 Difference]: Finished difference Result 279 states and 305 transitions. [2021-02-23 18:10:45,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 18:10:45,247 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 73 [2021-02-23 18:10:45,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:10:45,251 INFO L225 Difference]: With dead ends: 279 [2021-02-23 18:10:45,252 INFO L226 Difference]: Without dead ends: 173 [2021-02-23 18:10:45,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=179, Invalid=751, Unknown=0, NotChecked=0, Total=930 [2021-02-23 18:10:45,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-02-23 18:10:45,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 138. [2021-02-23 18:10:45,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2021-02-23 18:10:45,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 149 transitions. [2021-02-23 18:10:45,287 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 149 transitions. Word has length 73 [2021-02-23 18:10:45,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:10:45,288 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 149 transitions. [2021-02-23 18:10:45,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-23 18:10:45,288 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 149 transitions. [2021-02-23 18:10:45,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-02-23 18:10:45,291 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:10:45,291 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:10:45,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:10:45,292 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:10:45,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:10:45,292 INFO L82 PathProgramCache]: Analyzing trace with hash -647964724, now seen corresponding path program 1 times [2021-02-23 18:10:45,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:10:45,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122974226] [2021-02-23 18:10:45,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:10:45,298 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:10:45,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:45,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:45,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:45,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:45,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:45,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:45,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:45,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:45,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:45,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:10:45,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:45,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:45,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:45,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 18:10:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:45,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:45,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:45,408 WARN L141 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-02-23 18:10:45,409 WARN L147 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size 7 [2021-02-23 18:10:45,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:45,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 18:10:45,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 18:10:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:45,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:45,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:45,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:45,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:45,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:45,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:45,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-23 18:10:45,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:45,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:45,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:45,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-02-23 18:10:45,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:45,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:45,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:45,522 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 18:10:45,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122974226] [2021-02-23 18:10:45,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:10:45,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-23 18:10:45,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284530981] [2021-02-23 18:10:45,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 18:10:45,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:10:45,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 18:10:45,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-02-23 18:10:45,525 INFO L87 Difference]: Start difference. First operand 138 states and 149 transitions. Second operand 12 states. [2021-02-23 18:10:46,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:10:46,787 INFO L93 Difference]: Finished difference Result 317 states and 352 transitions. [2021-02-23 18:10:46,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-23 18:10:46,788 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 75 [2021-02-23 18:10:46,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:10:46,791 INFO L225 Difference]: With dead ends: 317 [2021-02-23 18:10:46,791 INFO L226 Difference]: Without dead ends: 210 [2021-02-23 18:10:46,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2021-02-23 18:10:46,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-02-23 18:10:46,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 158. [2021-02-23 18:10:46,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2021-02-23 18:10:46,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 171 transitions. [2021-02-23 18:10:46,838 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 171 transitions. Word has length 75 [2021-02-23 18:10:46,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:10:46,839 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 171 transitions. [2021-02-23 18:10:46,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 18:10:46,842 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 171 transitions. [2021-02-23 18:10:46,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-02-23 18:10:46,849 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:10:46,849 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:10:46,849 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:10:46,850 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:10:46,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:10:46,850 INFO L82 PathProgramCache]: Analyzing trace with hash -758130634, now seen corresponding path program 1 times [2021-02-23 18:10:46,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:10:46,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899382226] [2021-02-23 18:10:46,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:10:46,859 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:10:46,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:46,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:46,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:46,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:46,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:46,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:10:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:46,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:46,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:46,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 18:10:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:47,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:47,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:47,036 WARN L141 QuantifierPusher]: treesize reduction 7, result has 61.1 percent of original size [2021-02-23 18:10:47,037 WARN L147 QuantifierPusher]: treesize reduction 7, result has 61.1 percent of original size 11 [2021-02-23 18:10:47,052 WARN L141 QuantifierPusher]: treesize reduction 16, result has 54.3 percent of original size [2021-02-23 18:10:47,054 WARN L147 QuantifierPusher]: treesize reduction 16, result has 54.3 percent of original size 19 [2021-02-23 18:10:47,072 WARN L141 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-02-23 18:10:47,073 WARN L147 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size 21 [2021-02-23 18:10:47,095 WARN L141 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-02-23 18:10:47,098 WARN L147 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size 21 [2021-02-23 18:10:47,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:47,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:10:47,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:47,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:10:47,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-02-23 18:10:47,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:47,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:47,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:47,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-02-23 18:10:47,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:47,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:47,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:47,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-02-23 18:10:47,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:47,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:47,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:47,205 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 18:10:47,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899382226] [2021-02-23 18:10:47,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:10:47,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-23 18:10:47,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604262966] [2021-02-23 18:10:47,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 18:10:47,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:10:47,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 18:10:47,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-23 18:10:47,208 INFO L87 Difference]: Start difference. First operand 158 states and 171 transitions. Second operand 11 states. [2021-02-23 18:10:47,780 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-02-23 18:10:47,997 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2021-02-23 18:10:48,129 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2021-02-23 18:10:48,527 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2021-02-23 18:10:48,759 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-02-23 18:10:48,892 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2021-02-23 18:10:49,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:10:49,122 INFO L93 Difference]: Finished difference Result 346 states and 379 transitions. [2021-02-23 18:10:49,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 18:10:49,123 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 83 [2021-02-23 18:10:49,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:10:49,125 INFO L225 Difference]: With dead ends: 346 [2021-02-23 18:10:49,125 INFO L226 Difference]: Without dead ends: 208 [2021-02-23 18:10:49,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=224, Invalid=478, Unknown=0, NotChecked=0, Total=702 [2021-02-23 18:10:49,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-02-23 18:10:49,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 165. [2021-02-23 18:10:49,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2021-02-23 18:10:49,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 178 transitions. [2021-02-23 18:10:49,164 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 178 transitions. Word has length 83 [2021-02-23 18:10:49,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:10:49,164 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 178 transitions. [2021-02-23 18:10:49,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 18:10:49,164 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 178 transitions. [2021-02-23 18:10:49,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-02-23 18:10:49,166 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:10:49,166 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:10:49,167 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 18:10:49,167 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:10:49,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:10:49,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1367874093, now seen corresponding path program 1 times [2021-02-23 18:10:49,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:10:49,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678084098] [2021-02-23 18:10:49,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:10:49,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:49,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-02-23 18:10:49,375 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:10:49,378 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:10:49,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:49,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:49,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:49,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:49,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:10:49,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:49,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 18:10:49,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:49,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:10:49,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:49,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:49,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:10:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:49,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:49,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:49,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 18:10:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:49,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:49,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:49,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 18:10:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:49,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:49,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:49,546 WARN L141 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-02-23 18:10:49,548 WARN L147 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size 9 [2021-02-23 18:10:49,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:49,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:10:49,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:49,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:10:49,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:49,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:10:49,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-23 18:10:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:49,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:49,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:49,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-02-23 18:10:49,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:49,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:49,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:49,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:49,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:49,672 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 18:10:49,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678084098] [2021-02-23 18:10:49,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:10:49,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-23 18:10:49,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431805802] [2021-02-23 18:10:49,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-23 18:10:49,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:10:49,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-23 18:10:49,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-02-23 18:10:49,678 INFO L87 Difference]: Start difference. First operand 165 states and 178 transitions. Second operand 13 states. [2021-02-23 18:10:50,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:10:50,476 INFO L93 Difference]: Finished difference Result 215 states and 234 transitions. [2021-02-23 18:10:50,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-23 18:10:50,477 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 84 [2021-02-23 18:10:50,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:10:50,480 INFO L225 Difference]: With dead ends: 215 [2021-02-23 18:10:50,480 INFO L226 Difference]: Without dead ends: 209 [2021-02-23 18:10:50,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2021-02-23 18:10:50,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-02-23 18:10:50,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 185. [2021-02-23 18:10:50,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2021-02-23 18:10:50,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 203 transitions. [2021-02-23 18:10:50,537 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 203 transitions. Word has length 84 [2021-02-23 18:10:50,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:10:50,540 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 203 transitions. [2021-02-23 18:10:50,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-23 18:10:50,540 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 203 transitions. [2021-02-23 18:10:50,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-02-23 18:10:50,543 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:10:50,543 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:10:50,543 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 18:10:50,544 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:10:50,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:10:50,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1155760493, now seen corresponding path program 2 times [2021-02-23 18:10:50,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:10:50,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464873872] [2021-02-23 18:10:50,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:10:50,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:50,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-23 18:10:50,608 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:10:50,611 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:10:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:50,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:50,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:50,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:50,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:50,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:50,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:50,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:50,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:50,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:10:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:50,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:50,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:50,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 18:10:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:50,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:50,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:50,706 WARN L141 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-02-23 18:10:50,707 WARN L147 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size 7 [2021-02-23 18:10:50,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:50,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 18:10:50,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:50,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 18:10:50,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:50,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 18:10:50,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-23 18:10:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:50,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:50,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:50,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:50,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:50,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:50,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:50,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-02-23 18:10:50,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:50,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:50,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:50,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-02-23 18:10:50,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:50,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:50,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:50,856 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 18:10:50,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464873872] [2021-02-23 18:10:50,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:10:50,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 18:10:50,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582297047] [2021-02-23 18:10:50,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 18:10:50,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:10:50,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 18:10:50,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-02-23 18:10:50,858 INFO L87 Difference]: Start difference. First operand 185 states and 203 transitions. Second operand 14 states. [2021-02-23 18:10:52,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:10:52,497 INFO L93 Difference]: Finished difference Result 325 states and 364 transitions. [2021-02-23 18:10:52,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-23 18:10:52,497 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 85 [2021-02-23 18:10:52,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:10:52,500 INFO L225 Difference]: With dead ends: 325 [2021-02-23 18:10:52,500 INFO L226 Difference]: Without dead ends: 231 [2021-02-23 18:10:52,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=172, Invalid=820, Unknown=0, NotChecked=0, Total=992 [2021-02-23 18:10:52,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-02-23 18:10:52,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 164. [2021-02-23 18:10:52,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2021-02-23 18:10:52,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 179 transitions. [2021-02-23 18:10:52,532 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 179 transitions. Word has length 85 [2021-02-23 18:10:52,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:10:52,532 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 179 transitions. [2021-02-23 18:10:52,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 18:10:52,532 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 179 transitions. [2021-02-23 18:10:52,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-02-23 18:10:52,533 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:10:52,534 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:10:52,534 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 18:10:52,534 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:10:52,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:10:52,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1054815585, now seen corresponding path program 1 times [2021-02-23 18:10:52,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:10:52,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399733314] [2021-02-23 18:10:52,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:10:52,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:52,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-02-23 18:10:52,677 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:10:52,680 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:10:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:52,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:52,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:52,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:52,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:52,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:52,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:52,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:52,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:52,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:10:52,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:52,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:52,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:52,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 18:10:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:52,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:52,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:52,762 WARN L141 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-02-23 18:10:52,763 WARN L147 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size 7 [2021-02-23 18:10:52,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:52,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 18:10:52,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 18:10:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:52,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:52,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:52,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:52,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:52,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:52,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:10:52,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:52,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:10:52,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:52,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:10:52,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:52,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:52,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-23 18:10:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:52,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:52,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:52,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-02-23 18:10:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:52,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:52,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:52,933 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 18:10:52,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399733314] [2021-02-23 18:10:52,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:10:52,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-23 18:10:52,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165505172] [2021-02-23 18:10:52,935 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-23 18:10:52,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:10:52,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-23 18:10:52,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-02-23 18:10:52,936 INFO L87 Difference]: Start difference. First operand 164 states and 179 transitions. Second operand 15 states. [2021-02-23 18:10:54,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:10:54,190 INFO L93 Difference]: Finished difference Result 342 states and 385 transitions. [2021-02-23 18:10:54,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-23 18:10:54,190 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 91 [2021-02-23 18:10:54,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:10:54,192 INFO L225 Difference]: With dead ends: 342 [2021-02-23 18:10:54,192 INFO L226 Difference]: Without dead ends: 243 [2021-02-23 18:10:54,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=146, Invalid=724, Unknown=0, NotChecked=0, Total=870 [2021-02-23 18:10:54,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-02-23 18:10:54,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 187. [2021-02-23 18:10:54,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2021-02-23 18:10:54,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 204 transitions. [2021-02-23 18:10:54,246 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 204 transitions. Word has length 91 [2021-02-23 18:10:54,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:10:54,246 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 204 transitions. [2021-02-23 18:10:54,246 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-23 18:10:54,246 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 204 transitions. [2021-02-23 18:10:54,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-02-23 18:10:54,248 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:10:54,248 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:10:54,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 18:10:54,249 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:10:54,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:10:54,249 INFO L82 PathProgramCache]: Analyzing trace with hash 117500582, now seen corresponding path program 2 times [2021-02-23 18:10:54,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:10:54,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222613265] [2021-02-23 18:10:54,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:10:54,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:54,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-02-23 18:10:54,492 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2021-02-23 18:10:54,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:54,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-02-23 18:10:54,549 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:10:54,552 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:10:54,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:54,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:54,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:54,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:54,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 18:10:54,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:54,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-23 18:10:54,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:54,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 18:10:54,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:54,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:54,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:10:54,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:54,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:54,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:54,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 18:10:54,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:54,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:54,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:54,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 18:10:54,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:54,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:54,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:54,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:54,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:54,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:54,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:54,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:54,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:10:54,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:54,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:10:54,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:54,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 18:10:54,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:54,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 18:10:54,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:54,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 18:10:54,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-23 18:10:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:54,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:54,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:54,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-02-23 18:10:54,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:54,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:54,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:10:54,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:54,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:10:54,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:54,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:10:54,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:54,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:10:54,872 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 18:10:54,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222613265] [2021-02-23 18:10:54,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:10:54,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-02-23 18:10:54,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411897604] [2021-02-23 18:10:54,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-23 18:10:54,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:10:54,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-23 18:10:54,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-02-23 18:10:54,875 INFO L87 Difference]: Start difference. First operand 187 states and 204 transitions. Second operand 18 states. [2021-02-23 18:10:56,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:10:56,424 INFO L93 Difference]: Finished difference Result 243 states and 267 transitions. [2021-02-23 18:10:56,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-23 18:10:56,425 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 100 [2021-02-23 18:10:56,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:10:56,428 INFO L225 Difference]: With dead ends: 243 [2021-02-23 18:10:56,428 INFO L226 Difference]: Without dead ends: 237 [2021-02-23 18:10:56,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=169, Invalid=1021, Unknown=0, NotChecked=0, Total=1190 [2021-02-23 18:10:56,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-02-23 18:10:56,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 213. [2021-02-23 18:10:56,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2021-02-23 18:10:56,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 236 transitions. [2021-02-23 18:10:56,463 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 236 transitions. Word has length 100 [2021-02-23 18:10:56,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:10:56,464 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 236 transitions. [2021-02-23 18:10:56,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-23 18:10:56,464 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 236 transitions. [2021-02-23 18:10:56,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-02-23 18:10:56,466 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:10:56,466 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:10:56,466 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 18:10:56,467 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:10:56,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:10:56,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1495530650, now seen corresponding path program 1 times [2021-02-23 18:10:56,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:10:56,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955922445] [2021-02-23 18:10:56,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:10:56,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:56,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-23 18:10:56,542 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:10:56,546 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:10:56,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:56,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:56,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:56,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:56,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:56,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:56,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:56,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:56,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:56,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:10:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:56,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:56,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:56,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 18:10:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:56,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:56,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:56,645 WARN L141 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-02-23 18:10:56,645 WARN L147 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size 7 [2021-02-23 18:10:56,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:56,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 18:10:56,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:56,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 18:10:56,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:56,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 18:10:56,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-23 18:10:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:56,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:56,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:56,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:56,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:56,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:56,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:10:56,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:56,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:10:56,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:56,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:10:56,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:56,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:56,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-23 18:10:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:56,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:56,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:56,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-02-23 18:10:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:56,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:56,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:56,870 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 18:10:56,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955922445] [2021-02-23 18:10:56,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:10:56,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-23 18:10:56,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064463901] [2021-02-23 18:10:56,871 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-23 18:10:56,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:10:56,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-23 18:10:56,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2021-02-23 18:10:56,872 INFO L87 Difference]: Start difference. First operand 213 states and 236 transitions. Second operand 17 states. [2021-02-23 18:10:58,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:10:58,865 INFO L93 Difference]: Finished difference Result 362 states and 408 transitions. [2021-02-23 18:10:58,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-23 18:10:58,866 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 101 [2021-02-23 18:10:58,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:10:58,868 INFO L225 Difference]: With dead ends: 362 [2021-02-23 18:10:58,868 INFO L226 Difference]: Without dead ends: 249 [2021-02-23 18:10:58,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=195, Invalid=1065, Unknown=0, NotChecked=0, Total=1260 [2021-02-23 18:10:58,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-02-23 18:10:58,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 180. [2021-02-23 18:10:58,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2021-02-23 18:10:58,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 196 transitions. [2021-02-23 18:10:58,905 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 196 transitions. Word has length 101 [2021-02-23 18:10:58,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:10:58,905 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 196 transitions. [2021-02-23 18:10:58,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-23 18:10:58,906 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 196 transitions. [2021-02-23 18:10:58,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-02-23 18:10:58,907 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:10:58,907 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:10:58,908 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 18:10:58,908 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:10:58,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:10:58,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1883028884, now seen corresponding path program 3 times [2021-02-23 18:10:58,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:10:58,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16183833] [2021-02-23 18:10:58,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:10:59,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:59,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-02-23 18:10:59,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:59,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-02-23 18:10:59,210 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:10:59,212 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:10:59,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:59,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:59,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:59,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:59,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:59,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:59,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:10:59,253 WARN L141 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-02-23 18:10:59,254 WARN L147 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size 1 [2021-02-23 18:10:59,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:59,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:59,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:10:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:59,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:59,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:59,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 18:10:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:59,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:59,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:59,293 WARN L141 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-02-23 18:10:59,294 WARN L147 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size 7 [2021-02-23 18:10:59,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:59,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 18:10:59,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 18:10:59,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:59,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:59,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:59,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-23 18:10:59,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:59,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:59,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:59,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:59,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:10:59,384 WARN L141 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-02-23 18:10:59,385 WARN L147 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size 11 [2021-02-23 18:10:59,402 WARN L141 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size [2021-02-23 18:10:59,404 WARN L147 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size 18 [2021-02-23 18:10:59,431 WARN L141 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-02-23 18:10:59,432 WARN L147 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size 16 [2021-02-23 18:10:59,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:59,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 18:10:59,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-02-23 18:10:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:59,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:59,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:59,493 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 18:10:59,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16183833] [2021-02-23 18:10:59,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:10:59,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 18:10:59,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868752514] [2021-02-23 18:10:59,495 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 18:10:59,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:10:59,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 18:10:59,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-02-23 18:10:59,496 INFO L87 Difference]: Start difference. First operand 180 states and 196 transitions. Second operand 14 states. [2021-02-23 18:10:59,946 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2021-02-23 18:11:00,751 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2021-02-23 18:11:01,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:11:01,435 INFO L93 Difference]: Finished difference Result 373 states and 424 transitions. [2021-02-23 18:11:01,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-23 18:11:01,435 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 107 [2021-02-23 18:11:01,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:11:01,437 INFO L225 Difference]: With dead ends: 373 [2021-02-23 18:11:01,437 INFO L226 Difference]: Without dead ends: 270 [2021-02-23 18:11:01,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=247, Invalid=809, Unknown=0, NotChecked=0, Total=1056 [2021-02-23 18:11:01,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-02-23 18:11:01,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 210. [2021-02-23 18:11:01,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2021-02-23 18:11:01,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 232 transitions. [2021-02-23 18:11:01,482 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 232 transitions. Word has length 107 [2021-02-23 18:11:01,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:11:01,483 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 232 transitions. [2021-02-23 18:11:01,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 18:11:01,483 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 232 transitions. [2021-02-23 18:11:01,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-02-23 18:11:01,484 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:11:01,485 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:11:01,485 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 18:11:01,485 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:11:01,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:11:01,486 INFO L82 PathProgramCache]: Analyzing trace with hash 188137929, now seen corresponding path program 1 times [2021-02-23 18:11:01,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:11:01,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393437278] [2021-02-23 18:11:01,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:11:01,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:01,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-02-23 18:11:01,730 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2021-02-23 18:11:01,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:01,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-02-23 18:11:01,782 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:11:01,785 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:11:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:11:01,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:01,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:11:01,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:01,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:11:01,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:01,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:11:01,829 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 18:11:01,829 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 18:11:01,836 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 18:11:01,837 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 18:11:01,846 WARN L141 QuantifierPusher]: treesize reduction 9, result has 74.3 percent of original size [2021-02-23 18:11:01,846 WARN L147 QuantifierPusher]: treesize reduction 9, result has 74.3 percent of original size 26 [2021-02-23 18:11:01,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:01,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:11:01,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:11:01,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:11:01,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:01,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:11:01,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 18:11:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:11:01,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:01,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:11:01,915 WARN L141 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-02-23 18:11:01,915 WARN L147 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size 7 [2021-02-23 18:11:01,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:01,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 18:11:01,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 18:11:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:11:01,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:01,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:11:01,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-23 18:11:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:11:01,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:01,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:11:01,986 WARN L141 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-02-23 18:11:01,986 WARN L147 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size 7 [2021-02-23 18:11:02,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:02,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 18:11:02,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-02-23 18:11:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:11:02,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:02,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:11:02,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:02,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:11:02,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:02,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:11:02,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:02,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:11:02,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:02,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:11:02,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:02,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:11:02,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:02,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:11:02,189 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 18:11:02,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393437278] [2021-02-23 18:11:02,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:11:02,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-02-23 18:11:02,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804717625] [2021-02-23 18:11:02,190 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-23 18:11:02,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:11:02,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-23 18:11:02,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2021-02-23 18:11:02,191 INFO L87 Difference]: Start difference. First operand 210 states and 232 transitions. Second operand 20 states. [2021-02-23 18:11:04,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:11:04,546 INFO L93 Difference]: Finished difference Result 329 states and 385 transitions. [2021-02-23 18:11:04,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 18:11:04,547 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 109 [2021-02-23 18:11:04,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:11:04,549 INFO L225 Difference]: With dead ends: 329 [2021-02-23 18:11:04,549 INFO L226 Difference]: Without dead ends: 323 [2021-02-23 18:11:04,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=206, Invalid=1434, Unknown=0, NotChecked=0, Total=1640 [2021-02-23 18:11:04,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-02-23 18:11:04,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 260. [2021-02-23 18:11:04,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2021-02-23 18:11:04,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 298 transitions. [2021-02-23 18:11:04,606 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 298 transitions. Word has length 109 [2021-02-23 18:11:04,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:11:04,606 INFO L480 AbstractCegarLoop]: Abstraction has 260 states and 298 transitions. [2021-02-23 18:11:04,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-02-23 18:11:04,606 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 298 transitions. [2021-02-23 18:11:04,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-02-23 18:11:04,608 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:11:04,609 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:11:04,609 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-23 18:11:04,609 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:11:04,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:11:04,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1503220247, now seen corresponding path program 2 times [2021-02-23 18:11:04,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:11:04,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302770896] [2021-02-23 18:11:04,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:11:04,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:04,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-02-23 18:11:04,858 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2021-02-23 18:11:04,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:04,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-02-23 18:11:04,917 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:11:04,919 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:11:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:11:05,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:05,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:11:05,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:05,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-23 18:11:05,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:05,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-02-23 18:11:05,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:05,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-23 18:11:05,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:05,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:11:05,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:11:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:11:05,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:05,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:11:05,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 18:11:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:11:05,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:05,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:11:05,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 18:11:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:11:05,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:05,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:11:05,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:05,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:11:05,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:05,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 18:11:05,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:05,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 18:11:05,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:05,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-23 18:11:05,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:05,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-23 18:11:05,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:05,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 18:11:05,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:05,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-23 18:11:05,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:05,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-23 18:11:05,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:05,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-23 18:11:05,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:05,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-23 18:11:05,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-23 18:11:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:11:05,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:05,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:11:05,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-02-23 18:11:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:11:05,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:05,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:11:05,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:05,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:11:05,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:05,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:11:05,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:05,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-23 18:11:05,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:05,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-23 18:11:05,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:05,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-23 18:11:05,608 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 18:11:05,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302770896] [2021-02-23 18:11:05,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:11:05,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-02-23 18:11:05,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738126028] [2021-02-23 18:11:05,609 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-23 18:11:05,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:11:05,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-23 18:11:05,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2021-02-23 18:11:05,610 INFO L87 Difference]: Start difference. First operand 260 states and 298 transitions. Second operand 23 states. [2021-02-23 18:11:08,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:11:08,312 INFO L93 Difference]: Finished difference Result 344 states and 403 transitions. [2021-02-23 18:11:08,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 18:11:08,313 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 116 [2021-02-23 18:11:08,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:11:08,318 INFO L225 Difference]: With dead ends: 344 [2021-02-23 18:11:08,318 INFO L226 Difference]: Without dead ends: 334 [2021-02-23 18:11:08,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=172, Invalid=1720, Unknown=0, NotChecked=0, Total=1892 [2021-02-23 18:11:08,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-02-23 18:11:08,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 301. [2021-02-23 18:11:08,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2021-02-23 18:11:08,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 350 transitions. [2021-02-23 18:11:08,386 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 350 transitions. Word has length 116 [2021-02-23 18:11:08,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:11:08,386 INFO L480 AbstractCegarLoop]: Abstraction has 301 states and 350 transitions. [2021-02-23 18:11:08,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-02-23 18:11:08,386 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 350 transitions. [2021-02-23 18:11:08,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-02-23 18:11:08,389 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:11:08,390 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:11:08,390 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-23 18:11:08,390 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:11:08,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:11:08,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1311943245, now seen corresponding path program 2 times [2021-02-23 18:11:08,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:11:08,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426063312] [2021-02-23 18:11:08,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:11:08,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:08,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-02-23 18:11:08,644 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2021-02-23 18:11:08,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:08,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-02-23 18:11:08,698 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:11:08,701 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:11:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:11:08,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:08,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:11:08,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:08,729 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:11:08,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:08,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:11:08,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:08,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:11:08,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:08,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:11:08,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:08,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:11:08,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:11:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:11:08,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:08,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:11:08,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 18:11:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:11:08,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:08,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:11:08,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 18:11:08,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:11:08,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:08,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:11:08,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-23 18:11:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:11:08,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:08,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:11:08,825 WARN L141 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-02-23 18:11:08,826 WARN L147 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size 7 [2021-02-23 18:11:08,838 WARN L141 QuantifierPusher]: treesize reduction 5, result has 80.0 percent of original size [2021-02-23 18:11:08,839 WARN L147 QuantifierPusher]: treesize reduction 5, result has 80.0 percent of original size 20 [2021-02-23 18:11:08,863 WARN L141 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size [2021-02-23 18:11:08,863 WARN L147 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size 18 [2021-02-23 18:11:08,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:08,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 18:11:08,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:08,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:11:08,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:08,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 18:11:08,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:08,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 18:11:08,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 18:11:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:11:08,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:08,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:11:08,985 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 18:11:08,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426063312] [2021-02-23 18:11:08,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:11:08,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-23 18:11:08,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071511016] [2021-02-23 18:11:08,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-23 18:11:08,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:11:08,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-23 18:11:08,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-02-23 18:11:08,995 INFO L87 Difference]: Start difference. First operand 301 states and 350 transitions. Second operand 16 states. [2021-02-23 18:11:10,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:11:10,852 INFO L93 Difference]: Finished difference Result 546 states and 652 transitions. [2021-02-23 18:11:10,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 18:11:10,852 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 117 [2021-02-23 18:11:10,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:11:10,856 INFO L225 Difference]: With dead ends: 546 [2021-02-23 18:11:10,856 INFO L226 Difference]: Without dead ends: 411 [2021-02-23 18:11:10,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=264, Invalid=1068, Unknown=0, NotChecked=0, Total=1332 [2021-02-23 18:11:10,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2021-02-23 18:11:10,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 325. [2021-02-23 18:11:10,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2021-02-23 18:11:10,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 384 transitions. [2021-02-23 18:11:10,930 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 384 transitions. Word has length 117 [2021-02-23 18:11:10,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:11:10,931 INFO L480 AbstractCegarLoop]: Abstraction has 325 states and 384 transitions. [2021-02-23 18:11:10,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-23 18:11:10,931 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 384 transitions. [2021-02-23 18:11:10,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-02-23 18:11:10,933 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:11:10,934 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:11:10,934 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-23 18:11:10,934 INFO L428 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:11:10,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:11:10,934 INFO L82 PathProgramCache]: Analyzing trace with hash 2082082099, now seen corresponding path program 3 times [2021-02-23 18:11:10,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:11:10,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660049416] [2021-02-23 18:11:10,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:11:10,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:10,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-23 18:11:10,992 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:11:10,994 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:11:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:11:11,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:11,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:11:11,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:11,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:11:11,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:11,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:11:11,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:11:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:11:11,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:11,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:11:11,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 18:11:11,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:11:11,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:11,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:11:11,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-23 18:11:11,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:11:11,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:11,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:11:11,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:11,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:11:11,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:11,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:11:11,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:11,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:11:11,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:11,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:11:11,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:11,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:11:11,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-02-23 18:11:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:11:11,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:11,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:11:11,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:11,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:11:11,192 WARN L141 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-02-23 18:11:11,193 WARN L147 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size 11 [2021-02-23 18:11:11,219 WARN L141 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size [2021-02-23 18:11:11,220 WARN L147 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size 18 [2021-02-23 18:11:11,262 WARN L141 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-02-23 18:11:11,263 WARN L147 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size 16 [2021-02-23 18:11:11,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:11,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 18:11:11,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 18:11:11,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:11:11,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:11,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:11:11,361 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 18:11:11,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660049416] [2021-02-23 18:11:11,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:11:11,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-23 18:11:11,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146325478] [2021-02-23 18:11:11,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-23 18:11:11,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:11:11,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-23 18:11:11,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2021-02-23 18:11:11,364 INFO L87 Difference]: Start difference. First operand 325 states and 384 transitions. Second operand 17 states. [2021-02-23 18:11:12,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:11:12,830 INFO L93 Difference]: Finished difference Result 514 states and 599 transitions. [2021-02-23 18:11:12,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-23 18:11:12,830 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 117 [2021-02-23 18:11:12,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:11:12,834 INFO L225 Difference]: With dead ends: 514 [2021-02-23 18:11:12,834 INFO L226 Difference]: Without dead ends: 339 [2021-02-23 18:11:12,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=193, Invalid=997, Unknown=0, NotChecked=0, Total=1190 [2021-02-23 18:11:12,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-02-23 18:11:12,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 319. [2021-02-23 18:11:12,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2021-02-23 18:11:12,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 372 transitions. [2021-02-23 18:11:12,900 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 372 transitions. Word has length 117 [2021-02-23 18:11:12,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:11:12,901 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 372 transitions. [2021-02-23 18:11:12,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-23 18:11:12,901 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 372 transitions. [2021-02-23 18:11:12,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-02-23 18:11:12,904 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:11:12,904 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:11:12,904 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-23 18:11:12,904 INFO L428 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:11:12,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:11:12,905 INFO L82 PathProgramCache]: Analyzing trace with hash -668263888, now seen corresponding path program 1 times [2021-02-23 18:11:12,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:11:12,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044817693] [2021-02-23 18:11:12,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:11:12,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:13,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-02-23 18:11:13,152 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2021-02-23 18:11:13,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:13,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-02-23 18:11:13,213 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:11:13,215 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:11:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:11:13,232 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:11:13,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:11:13,249 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:11:13,323 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 18:11:13,324 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 18:11:13,325 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-23 18:11:13,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:11:13 BoogieIcfgContainer [2021-02-23 18:11:13,346 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:11:13,347 INFO L168 Benchmark]: Toolchain (without parser) took 33017.55 ms. Allocated memory was 163.6 MB in the beginning and 376.4 MB in the end (delta: 212.9 MB). Free memory was 137.8 MB in the beginning and 260.6 MB in the end (delta: -122.8 MB). Peak memory consumption was 91.0 MB. Max. memory is 8.0 GB. [2021-02-23 18:11:13,347 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 163.6 MB. Free memory was 147.0 MB in the beginning and 146.8 MB in the end (delta: 215.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:11:13,347 INFO L168 Benchmark]: CACSL2BoogieTranslator took 632.63 ms. Allocated memory is still 163.6 MB. Free memory was 136.8 MB in the beginning and 113.4 MB in the end (delta: 23.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:11:13,347 INFO L168 Benchmark]: Boogie Preprocessor took 101.07 ms. Allocated memory is still 163.6 MB. Free memory was 113.4 MB in the beginning and 110.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:11:13,348 INFO L168 Benchmark]: RCFGBuilder took 1087.94 ms. Allocated memory was 163.6 MB in the beginning and 217.1 MB in the end (delta: 53.5 MB). Free memory was 110.6 MB in the beginning and 194.8 MB in the end (delta: -84.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 8.0 GB. [2021-02-23 18:11:13,348 INFO L168 Benchmark]: TraceAbstraction took 31173.55 ms. Allocated memory was 217.1 MB in the beginning and 376.4 MB in the end (delta: 159.4 MB). Free memory was 194.3 MB in the beginning and 260.6 MB in the end (delta: -66.3 MB). Peak memory consumption was 93.6 MB. Max. memory is 8.0 GB. [2021-02-23 18:11:13,349 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 163.6 MB. Free memory was 147.0 MB in the beginning and 146.8 MB in the end (delta: 215.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 632.63 ms. Allocated memory is still 163.6 MB. Free memory was 136.8 MB in the beginning and 113.4 MB in the end (delta: 23.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 101.07 ms. Allocated memory is still 163.6 MB. Free memory was 113.4 MB in the beginning and 110.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1087.94 ms. Allocated memory was 163.6 MB in the beginning and 217.1 MB in the end (delta: 53.5 MB). Free memory was 110.6 MB in the beginning and 194.8 MB in the end (delta: -84.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 31173.55 ms. Allocated memory was 217.1 MB in the beginning and 376.4 MB in the end (delta: 159.4 MB). Free memory was 194.3 MB in the beginning and 260.6 MB in the end (delta: -66.3 MB). Peak memory consumption was 93.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 641]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L627] CALL, EXPR _get_nondet_int(2, 5) [L620] int len = from; [L621] len < until && __VERIFIER_nondet_int() [L621] len < until && __VERIFIER_nondet_int() [L621] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L624] return len; [L627] RET, EXPR _get_nondet_int(2, 5) [L627] const int len = _get_nondet_int(2, 5); [L628] SLL s = sll_create(len); [L628] CALL, EXPR sll_create(len) [L575] SLL head = ((void *)0); [L576] EXPR len-- [L576] COND TRUE len-- > 0 [L577] SLL new_head = (SLL) malloc(sizeof(struct node)); [L578] COND FALSE !(((void *)0) == new_head) [L581] new_head->next = head [L582] head = new_head [L576] EXPR len-- [L576] COND TRUE len-- > 0 [L577] SLL new_head = (SLL) malloc(sizeof(struct node)); [L578] COND FALSE !(((void *)0) == new_head) [L581] new_head->next = head [L582] head = new_head [L576] EXPR len-- [L576] COND FALSE !(len-- > 0) [L584] return head; [L628] RET, EXPR sll_create(len) [L628] SLL s = sll_create(len); [L629] CALL, EXPR _get_nondet_int(0, len - 1) [L620] int len = from; [L621] len < until && __VERIFIER_nondet_int() [L621] len < until && __VERIFIER_nondet_int() [L621] COND TRUE len < until && __VERIFIER_nondet_int() [L622] len++ [L621] len < until && __VERIFIER_nondet_int() [L621] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L624] return len; [L629] RET, EXPR _get_nondet_int(0, len - 1) [L629] const int k = _get_nondet_int(0, len - 1); [L630] int i = 0; [L631] i < k && __VERIFIER_nondet_int() [L631] i < k && __VERIFIER_nondet_int() [L631] COND FALSE !(i < k && __VERIFIER_nondet_int()) [L636] EXPR \read(s) [L636] CALL, EXPR sll_length(s) [L587] int len = 0; [L588] COND TRUE \read(head) [L589] len++ [L590] EXPR head->next [L590] head = head->next [L588] COND TRUE \read(head) [L589] len++ [L590] EXPR head->next [L590] head = head->next [L588] COND FALSE !(\read(head)) [L592] return len; [L636] RET, EXPR sll_length(s) [L636] COND TRUE k + len != sll_length(s) [L641] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 163 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 31.0s, OverallIterations: 15, TraceHistogramMax: 3, AutomataDifference: 22.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1928 SDtfs, 4269 SDslu, 11833 SDs, 0 SdLazy, 12681 SolverSat, 559 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 598 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 405 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1933 ImplicationChecksByTransitivity, 12.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=325occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 14 MinimizatonAttempts, 641 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...