/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-properties/list_search-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:04:48,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:04:48,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:04:48,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 18:04:48,115 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 18:04:48,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 18:04:48,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 18:04:48,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 18:04:48,136 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 18:04:48,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 18:04:48,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 18:04:48,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 18:04:48,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:04:48,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:04:48,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:04:48,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:04:48,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:04:48,175 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:04:48,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:04:48,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:04:48,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:04:48,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:04:48,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:04:48,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:04:48,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 18:04:48,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 18:04:48,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 18:04:48,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 18:04:48,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 18:04:48,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 18:04:48,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 18:04:48,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 18:04:48,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 18:04:48,204 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 18:04:48,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 18:04:48,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 18:04:48,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 18:04:48,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 18:04:48,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:04:48,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:04:48,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:04:48,211 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 18:04:48,232 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:04:48,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:04:48,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:04:48,237 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:04:48,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:04:48,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:04:48,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:04:48,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:04:48,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:04:48,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:04:48,240 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:04:48,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:04:48,240 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:04:48,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:04:48,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:04:48,241 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:04:48,241 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:04:48,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:04:48,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:04:48,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:04:48,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:04:48,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:04:48,242 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:04:48,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:04:48,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:04:48,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:04:48,675 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:04:48,676 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:04:48,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_search-1.i [2021-02-23 18:04:48,744 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfa12babb/f650de5c0b0f4e738bf7750e95c4cc91/FLAG6b03aa851 [2021-02-23 18:04:49,530 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:04:49,531 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list_search-1.i [2021-02-23 18:04:49,552 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfa12babb/f650de5c0b0f4e738bf7750e95c4cc91/FLAG6b03aa851 [2021-02-23 18:04:49,768 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfa12babb/f650de5c0b0f4e738bf7750e95c4cc91 [2021-02-23 18:04:49,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:04:49,785 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:04:49,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:04:49,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:04:49,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:04:49,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:04:49" (1/1) ... [2021-02-23 18:04:49,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@404cee68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:49, skipping insertion in model container [2021-02-23 18:04:49,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:04:49" (1/1) ... [2021-02-23 18:04:49,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:04:49,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:04:50,009 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-properties/list_search-1.i[813,826] [2021-02-23 18:04:50,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:04:50,268 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:04:50,284 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-properties/list_search-1.i[813,826] [2021-02-23 18:04:50,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:04:50,445 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:04:50,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:50 WrapperNode [2021-02-23 18:04:50,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:04:50,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:04:50,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:04:50,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:04:50,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:50" (1/1) ... [2021-02-23 18:04:50,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:50" (1/1) ... [2021-02-23 18:04:50,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:50" (1/1) ... [2021-02-23 18:04:50,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:50" (1/1) ... [2021-02-23 18:04:50,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:50" (1/1) ... [2021-02-23 18:04:50,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:50" (1/1) ... [2021-02-23 18:04:50,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:50" (1/1) ... [2021-02-23 18:04:50,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:04:50,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:04:50,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:04:50,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:04:50,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:50" (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 18:04:50,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:04:50,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:04:50,718 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:04:50,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 18:04:50,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-23 18:04:50,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-23 18:04:50,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-02-23 18:04:50,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-02-23 18:04:50,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-02-23 18:04:50,720 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2021-02-23 18:04:50,720 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2021-02-23 18:04:50,720 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:04:50,720 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:04:50,720 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:04:50,720 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 18:04:50,721 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 18:04:50,721 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:04:50,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:04:50,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 18:04:50,721 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-23 18:04:50,721 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-23 18:04:50,722 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-23 18:04:50,722 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-23 18:04:50,722 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-23 18:04:50,722 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-23 18:04:50,722 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-23 18:04:50,722 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-23 18:04:50,723 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-23 18:04:50,723 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-23 18:04:50,723 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-23 18:04:50,723 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-23 18:04:50,723 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-23 18:04:50,723 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-23 18:04:50,724 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-23 18:04:50,724 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-23 18:04:50,724 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-23 18:04:50,724 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-23 18:04:50,724 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-02-23 18:04:50,725 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-02-23 18:04:50,725 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-02-23 18:04:50,725 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-23 18:04:50,725 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-23 18:04:50,725 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-23 18:04:50,725 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-23 18:04:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-23 18:04:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-23 18:04:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-23 18:04:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-23 18:04:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-23 18:04:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-23 18:04:50,727 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-23 18:04:50,727 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-23 18:04:50,727 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-23 18:04:50,727 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-23 18:04:50,727 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-23 18:04:50,727 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-23 18:04:50,728 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-23 18:04:50,728 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-23 18:04:50,728 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-23 18:04:50,728 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-23 18:04:50,728 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-23 18:04:50,728 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-23 18:04:50,728 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-23 18:04:50,729 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-23 18:04:50,729 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-23 18:04:50,729 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-23 18:04:50,729 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-23 18:04:50,729 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-23 18:04:50,729 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-23 18:04:50,729 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-23 18:04:50,730 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-23 18:04:50,730 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-23 18:04:50,730 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-23 18:04:50,730 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-23 18:04:50,730 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 18:04:50,730 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-23 18:04:50,730 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-23 18:04:50,731 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 18:04:50,731 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-23 18:04:50,731 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-23 18:04:50,731 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-23 18:04:50,731 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-23 18:04:50,731 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-23 18:04:50,732 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-23 18:04:50,732 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-23 18:04:50,732 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-23 18:04:50,732 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-23 18:04:50,732 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-23 18:04:50,732 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-23 18:04:50,732 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-23 18:04:50,733 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-23 18:04:50,733 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-23 18:04:50,733 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-23 18:04:50,733 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-23 18:04:50,733 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-23 18:04:50,733 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-23 18:04:50,733 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-23 18:04:50,734 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-23 18:04:50,734 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-23 18:04:50,734 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-23 18:04:50,734 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-23 18:04:50,734 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-23 18:04:50,734 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-23 18:04:50,734 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-23 18:04:50,735 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-23 18:04:50,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-23 18:04:50,735 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-23 18:04:50,735 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-23 18:04:50,735 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-23 18:04:50,735 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-23 18:04:50,735 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-23 18:04:50,736 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-23 18:04:50,736 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-23 18:04:50,736 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-23 18:04:50,736 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-23 18:04:50,736 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-23 18:04:50,736 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-23 18:04:50,736 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-23 18:04:50,737 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-23 18:04:50,737 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-23 18:04:50,737 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-23 18:04:50,737 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-23 18:04:50,737 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-23 18:04:50,737 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-23 18:04:50,737 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-23 18:04:50,738 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2021-02-23 18:04:50,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:04:50,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 18:04:50,738 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2021-02-23 18:04:50,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 18:04:50,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:04:50,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 18:04:50,739 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:04:50,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:04:50,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:04:50,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:04:50,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:04:51,403 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:04:51,403 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-23 18:04:51,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:04:51 BoogieIcfgContainer [2021-02-23 18:04:51,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:04:51,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:04:51,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:04:51,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:04:51,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:04:49" (1/3) ... [2021-02-23 18:04:51,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19007e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:04:51, skipping insertion in model container [2021-02-23 18:04:51,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:50" (2/3) ... [2021-02-23 18:04:51,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19007e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:04:51, skipping insertion in model container [2021-02-23 18:04:51,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:04:51" (3/3) ... [2021-02-23 18:04:51,416 INFO L111 eAbstractionObserver]: Analyzing ICFG list_search-1.i [2021-02-23 18:04:51,423 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:04:51,429 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:04:51,450 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:04:51,476 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:04:51,476 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:04:51,476 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:04:51,476 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:04:51,476 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:04:51,477 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:04:51,477 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:04:51,477 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:04:51,494 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states. [2021-02-23 18:04:51,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-02-23 18:04:51,508 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:04:51,509 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:04:51,510 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:04:51,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:04:51,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1236516545, now seen corresponding path program 1 times [2021-02-23 18:04:51,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:04:51,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724828616] [2021-02-23 18:04:51,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:04:51,617 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:04:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:51,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:51,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:51,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:51,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:04:51,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:51,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:51,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:04:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:52,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:52,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:52,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 18:04:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:52,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:52,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:52,178 WARN L141 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-02-23 18:04:52,183 WARN L147 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size 9 [2021-02-23 18:04:52,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:52,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:04:52,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:52,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:04:52,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 18:04:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:52,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:52,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:04:52,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:52,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:04:52,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-02-23 18:04:52,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:52,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:52,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:52,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-02-23 18:04:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:52,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:52,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:52,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-02-23 18:04:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:52,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:52,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:52,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:52,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:52,453 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 44 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-02-23 18:04:52,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724828616] [2021-02-23 18:04:52,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:04:52,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 18:04:52,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311449556] [2021-02-23 18:04:52,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 18:04:52,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:04:52,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 18:04:52,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-02-23 18:04:52,482 INFO L87 Difference]: Start difference. First operand 81 states. Second operand 9 states. [2021-02-23 18:04:53,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:04:53,280 INFO L93 Difference]: Finished difference Result 192 states and 230 transitions. [2021-02-23 18:04:53,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-23 18:04:53,282 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2021-02-23 18:04:53,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:04:53,293 INFO L225 Difference]: With dead ends: 192 [2021-02-23 18:04:53,293 INFO L226 Difference]: Without dead ends: 96 [2021-02-23 18:04:53,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-02-23 18:04:53,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-02-23 18:04:53,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 77. [2021-02-23 18:04:53,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-02-23 18:04:53,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2021-02-23 18:04:53,360 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 86 [2021-02-23 18:04:53,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:04:53,361 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2021-02-23 18:04:53,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 18:04:53,361 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2021-02-23 18:04:53,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-02-23 18:04:53,365 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:04:53,366 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:04:53,366 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:04:53,366 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:04:53,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:04:53,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1097503254, now seen corresponding path program 1 times [2021-02-23 18:04:53,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:04:53,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706691251] [2021-02-23 18:04:53,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:04:53,373 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:04:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:53,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:53,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:53,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:53,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:04:53,461 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:53,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:53,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:04:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:53,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:53,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:53,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 18:04:53,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:53,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:53,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:53,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 18:04:53,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:53,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:53,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:53,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-23 18:04:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:53,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:53,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:53,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-23 18:04:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:53,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:53,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:53,616 WARN L141 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-02-23 18:04:53,617 WARN L147 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size 9 [2021-02-23 18:04:53,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:53,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:04:53,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:53,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:04:53,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-02-23 18:04:53,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:53,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:53,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:53,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:53,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:04:53,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:53,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:04:53,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:53,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:04:53,737 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-02-23 18:04:53,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706691251] [2021-02-23 18:04:53,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:04:53,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 18:04:53,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99854607] [2021-02-23 18:04:53,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 18:04:53,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:04:53,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 18:04:53,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-02-23 18:04:53,742 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 10 states. [2021-02-23 18:04:54,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:04:54,536 INFO L93 Difference]: Finished difference Result 117 states and 125 transitions. [2021-02-23 18:04:54,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 18:04:54,537 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2021-02-23 18:04:54,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:04:54,541 INFO L225 Difference]: With dead ends: 117 [2021-02-23 18:04:54,541 INFO L226 Difference]: Without dead ends: 94 [2021-02-23 18:04:54,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2021-02-23 18:04:54,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-02-23 18:04:54,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 79. [2021-02-23 18:04:54,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-02-23 18:04:54,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2021-02-23 18:04:54,565 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 93 [2021-02-23 18:04:54,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:04:54,566 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2021-02-23 18:04:54,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 18:04:54,566 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2021-02-23 18:04:54,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-02-23 18:04:54,568 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:04:54,568 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:04:54,568 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:04:54,569 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:04:54,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:04:54,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1922674771, now seen corresponding path program 1 times [2021-02-23 18:04:54,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:04:54,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449560862] [2021-02-23 18:04:54,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:04:54,574 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:04:54,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:54,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:54,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:54,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:54,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 18:04:54,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:54,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:54,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:54,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:54,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:04:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:54,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:54,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:54,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 18:04:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:54,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:54,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:54,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 18:04:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:54,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:54,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:54,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-23 18:04:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:54,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:54,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:54,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-23 18:04:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:54,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:54,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:54,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:54,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:04:54,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:54,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:54,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:54,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:54,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:54,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:54,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-02-23 18:04:54,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:54,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:54,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:54,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:54,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:04:54,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:54,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:04:54,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:54,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-02-23 18:04:54,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:54,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-02-23 18:04:54,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:54,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-02-23 18:04:54,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:54,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:55,018 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-02-23 18:04:55,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449560862] [2021-02-23 18:04:55,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:04:55,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 18:04:55,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781049062] [2021-02-23 18:04:55,020 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 18:04:55,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:04:55,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 18:04:55,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-02-23 18:04:55,021 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand 14 states. [2021-02-23 18:04:55,879 WARN L202 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2021-02-23 18:04:56,032 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2021-02-23 18:04:56,278 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2021-02-23 18:04:56,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:04:56,492 INFO L93 Difference]: Finished difference Result 104 states and 109 transitions. [2021-02-23 18:04:56,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-23 18:04:56,492 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 95 [2021-02-23 18:04:56,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:04:56,494 INFO L225 Difference]: With dead ends: 104 [2021-02-23 18:04:56,495 INFO L226 Difference]: Without dead ends: 91 [2021-02-23 18:04:56,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=174, Invalid=638, Unknown=0, NotChecked=0, Total=812 [2021-02-23 18:04:56,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-02-23 18:04:56,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 82. [2021-02-23 18:04:56,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-02-23 18:04:56,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 87 transitions. [2021-02-23 18:04:56,521 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 87 transitions. Word has length 95 [2021-02-23 18:04:56,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:04:56,522 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 87 transitions. [2021-02-23 18:04:56,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 18:04:56,522 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 87 transitions. [2021-02-23 18:04:56,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-02-23 18:04:56,524 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:04:56,524 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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 18:04:56,524 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:04:56,525 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:04:56,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:04:56,525 INFO L82 PathProgramCache]: Analyzing trace with hash -150000509, now seen corresponding path program 1 times [2021-02-23 18:04:56,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:04:56,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261858329] [2021-02-23 18:04:56,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:04:56,530 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:04:56,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:56,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:56,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:56,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:56,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:56,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:56,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:04:56,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:56,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 18:04:56,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:56,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:56,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:04:56,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:56,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:56,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:56,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 18:04:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:56,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:56,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:56,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 18:04:56,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:56,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:56,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:56,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-23 18:04:56,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:56,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:56,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:56,710 WARN L141 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-02-23 18:04:56,711 WARN L147 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size 9 [2021-02-23 18:04:56,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:56,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:04:56,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:56,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:04:56,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-23 18:04:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:56,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:56,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:04:56,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:56,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:56,790 WARN L141 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-02-23 18:04:56,792 WARN L147 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size 7 [2021-02-23 18:04:56,807 WARN L141 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-02-23 18:04:56,808 WARN L147 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size 13 [2021-02-23 18:04:56,825 WARN L141 QuantifierPusher]: treesize reduction 9, result has 64.0 percent of original size [2021-02-23 18:04:56,826 WARN L147 QuantifierPusher]: treesize reduction 9, result has 64.0 percent of original size 16 [2021-02-23 18:04:56,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-02-23 18:04:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:56,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:56,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:56,870 WARN L141 QuantifierPusher]: treesize reduction 9, result has 64.0 percent of original size [2021-02-23 18:04:56,871 WARN L147 QuantifierPusher]: treesize reduction 9, result has 64.0 percent of original size 16 [2021-02-23 18:04:56,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:56,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 18:04:56,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:56,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 18:04:56,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:56,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:04:56,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:56,991 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 18:04:57,048 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-02-23 18:04:57,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261858329] [2021-02-23 18:04:57,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:04:57,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-02-23 18:04:57,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911070325] [2021-02-23 18:04:57,050 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-23 18:04:57,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:04:57,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-23 18:04:57,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-02-23 18:04:57,051 INFO L87 Difference]: Start difference. First operand 82 states and 87 transitions. Second operand 18 states. [2021-02-23 18:04:59,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:04:59,204 INFO L93 Difference]: Finished difference Result 142 states and 150 transitions. [2021-02-23 18:04:59,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-02-23 18:04:59,205 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 103 [2021-02-23 18:04:59,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:04:59,207 INFO L225 Difference]: With dead ends: 142 [2021-02-23 18:04:59,207 INFO L226 Difference]: Without dead ends: 119 [2021-02-23 18:04:59,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=291, Invalid=1431, Unknown=0, NotChecked=0, Total=1722 [2021-02-23 18:04:59,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-02-23 18:04:59,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 91. [2021-02-23 18:04:59,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2021-02-23 18:04:59,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2021-02-23 18:04:59,236 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 103 [2021-02-23 18:04:59,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:04:59,236 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2021-02-23 18:04:59,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-23 18:04:59,236 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2021-02-23 18:04:59,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-02-23 18:04:59,238 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:04:59,239 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2021-02-23 18:04:59,239 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 18:04:59,239 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:04:59,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:04:59,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1905603578, now seen corresponding path program 1 times [2021-02-23 18:04:59,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:04:59,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161489830] [2021-02-23 18:04:59,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:04:59,245 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:04:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:59,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:59,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:59,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:59,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:59,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:59,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-23 18:04:59,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:59,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 18:04:59,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:59,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:59,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:59,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:59,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:59,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:04:59,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:59,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:04:59,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:59,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:04:59,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:59,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:59,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:04:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:59,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:59,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:59,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 18:04:59,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:59,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:59,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:59,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 18:04:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:59,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:59,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:59,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-23 18:04:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:59,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:59,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:59,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:59,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:04:59,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:59,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 18:04:59,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:59,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 18:04:59,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:59,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-23 18:04:59,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:59,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-23 18:04:59,625 WARN L141 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-02-23 18:04:59,626 WARN L147 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size 21 [2021-02-23 18:04:59,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-23 18:04:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:59,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:59,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:04:59,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:59,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 18:04:59,753 WARN L141 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size [2021-02-23 18:04:59,756 WARN L147 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size 18 [2021-02-23 18:04:59,788 WARN L141 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-02-23 18:04:59,789 WARN L147 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size 23 [2021-02-23 18:04:59,830 WARN L141 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-02-23 18:04:59,831 WARN L147 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size 23 [2021-02-23 18:04:59,832 WARN L141 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size [2021-02-23 18:04:59,833 WARN L147 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size 33 [2021-02-23 18:04:59,873 WARN L141 QuantifierPusher]: treesize reduction 9, result has 84.2 percent of original size [2021-02-23 18:04:59,876 WARN L147 QuantifierPusher]: treesize reduction 9, result has 84.2 percent of original size 48 [2021-02-23 18:04:59,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-02-23 18:04:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:59,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:59,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:59,945 WARN L141 QuantifierPusher]: treesize reduction 11, result has 59.3 percent of original size [2021-02-23 18:04:59,946 WARN L147 QuantifierPusher]: treesize reduction 11, result has 59.3 percent of original size 16 [2021-02-23 18:04:59,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:59,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-23 18:05:00,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:00,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-23 18:05:00,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:00,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-23 18:05:00,147 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-23 18:05:00,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161489830] [2021-02-23 18:05:00,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:05:00,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-02-23 18:05:00,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603694453] [2021-02-23 18:05:00,148 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-02-23 18:05:00,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:05:00,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-02-23 18:05:00,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=597, Unknown=0, NotChecked=0, Total=650 [2021-02-23 18:05:00,150 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 26 states. [2021-02-23 18:05:01,754 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2021-02-23 18:05:02,006 WARN L202 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2021-02-23 18:05:02,172 WARN L202 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-02-23 18:05:02,326 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2021-02-23 18:05:02,658 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-02-23 18:05:03,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:05:03,073 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2021-02-23 18:05:03,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-02-23 18:05:03,074 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 105 [2021-02-23 18:05:03,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:05:03,076 INFO L225 Difference]: With dead ends: 123 [2021-02-23 18:05:03,076 INFO L226 Difference]: Without dead ends: 110 [2021-02-23 18:05:03,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=247, Invalid=2203, Unknown=0, NotChecked=0, Total=2450 [2021-02-23 18:05:03,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-02-23 18:05:03,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 94. [2021-02-23 18:05:03,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2021-02-23 18:05:03,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions. [2021-02-23 18:05:03,106 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 105 [2021-02-23 18:05:03,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:05:03,106 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 98 transitions. [2021-02-23 18:05:03,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2021-02-23 18:05:03,107 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 98 transitions. [2021-02-23 18:05:03,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-02-23 18:05:03,109 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:05:03,109 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:05:03,109 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 18:05:03,109 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:05:03,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:05:03,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1705131996, now seen corresponding path program 2 times [2021-02-23 18:05:03,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:05:03,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60478056] [2021-02-23 18:05:03,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:05:03,114 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:05:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:03,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:03,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:03,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:03,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:03,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:03,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:05:03,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:03,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 18:05:03,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:03,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-23 18:05:03,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:03,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:03,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:05:03,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:03,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:03,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:03,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 18:05:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:03,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:03,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:03,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 18:05:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:03,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:03,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:03,296 WARN L141 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-02-23 18:05:03,297 WARN L147 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size 9 [2021-02-23 18:05:03,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:03,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:05:03,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:03,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:05:03,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-23 18:05:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:03,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:03,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:05:03,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:03,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 18:05:03,382 WARN L141 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size [2021-02-23 18:05:03,382 WARN L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-02-23 18:05:03,401 WARN L141 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size [2021-02-23 18:05:03,402 WARN L147 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size 18 [2021-02-23 18:05:03,424 WARN L141 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-02-23 18:05:03,425 WARN L147 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size 21 [2021-02-23 18:05:03,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-23 18:05:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:03,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:03,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:05:03,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:03,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 18:05:03,527 WARN L141 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size [2021-02-23 18:05:03,529 WARN L147 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size 18 [2021-02-23 18:05:03,562 WARN L141 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-02-23 18:05:03,563 WARN L147 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size 23 [2021-02-23 18:05:03,597 WARN L141 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-02-23 18:05:03,598 WARN L147 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size 23 [2021-02-23 18:05:03,599 WARN L141 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size [2021-02-23 18:05:03,600 WARN L147 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size 33 [2021-02-23 18:05:03,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:03,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-23 18:05:03,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-02-23 18:05:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:03,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:03,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:03,698 WARN L141 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-02-23 18:05:03,698 WARN L147 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size 20 [2021-02-23 18:05:03,753 WARN L141 QuantifierPusher]: treesize reduction 5, result has 80.0 percent of original size [2021-02-23 18:05:03,754 WARN L147 QuantifierPusher]: treesize reduction 5, result has 80.0 percent of original size 20 [2021-02-23 18:05:03,786 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.9 percent of original size [2021-02-23 18:05:03,787 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.9 percent of original size 37 [2021-02-23 18:05:03,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:03,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-23 18:05:03,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:03,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-23 18:05:03,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:03,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-23 18:05:03,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:03,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-23 18:05:04,072 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-02-23 18:05:04,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60478056] [2021-02-23 18:05:04,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:05:04,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-02-23 18:05:04,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601187447] [2021-02-23 18:05:04,074 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-02-23 18:05:04,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:05:04,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-02-23 18:05:04,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2021-02-23 18:05:04,075 INFO L87 Difference]: Start difference. First operand 94 states and 98 transitions. Second operand 27 states. [2021-02-23 18:05:06,329 WARN L202 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2021-02-23 18:05:07,367 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-02-23 18:05:07,593 WARN L202 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2021-02-23 18:05:07,792 WARN L202 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2021-02-23 18:05:07,966 WARN L202 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2021-02-23 18:05:08,155 WARN L202 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2021-02-23 18:05:08,385 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2021-02-23 18:05:08,541 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2021-02-23 18:05:08,712 WARN L202 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2021-02-23 18:05:08,900 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2021-02-23 18:05:09,251 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2021-02-23 18:05:09,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:05:09,372 INFO L93 Difference]: Finished difference Result 164 states and 171 transitions. [2021-02-23 18:05:09,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-02-23 18:05:09,373 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 113 [2021-02-23 18:05:09,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:05:09,375 INFO L225 Difference]: With dead ends: 164 [2021-02-23 18:05:09,375 INFO L226 Difference]: Without dead ends: 141 [2021-02-23 18:05:09,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=591, Invalid=3569, Unknown=0, NotChecked=0, Total=4160 [2021-02-23 18:05:09,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-02-23 18:05:09,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 113. [2021-02-23 18:05:09,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2021-02-23 18:05:09,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 116 transitions. [2021-02-23 18:05:09,407 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 116 transitions. Word has length 113 [2021-02-23 18:05:09,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:05:09,407 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 116 transitions. [2021-02-23 18:05:09,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2021-02-23 18:05:09,407 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 116 transitions. [2021-02-23 18:05:09,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-02-23 18:05:09,408 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:05:09,408 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:05:09,408 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 18:05:09,409 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:05:09,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:05:09,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1534694113, now seen corresponding path program 2 times [2021-02-23 18:05:09,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:05:09,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166929208] [2021-02-23 18:05:09,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:05:09,413 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:05:09,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:09,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:09,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:09,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:09,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:09,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:09,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 18:05:09,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:09,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-23 18:05:09,535 WARN L141 QuantifierPusher]: treesize reduction 4, result has 92.6 percent of original size [2021-02-23 18:05:09,536 WARN L147 QuantifierPusher]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-02-23 18:05:09,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:09,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:09,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:09,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:09,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:05:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:09,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:09,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:09,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 18:05:09,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:09,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:09,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:09,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 18:05:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:09,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:09,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:09,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:09,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:05:09,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:09,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 18:05:09,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:09,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 18:05:09,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:09,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-23 18:05:09,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:09,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-23 18:05:09,701 WARN L141 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-02-23 18:05:09,702 WARN L147 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size 21 [2021-02-23 18:05:09,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-23 18:05:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:09,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:09,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:05:09,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:09,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-23 18:05:09,799 WARN L141 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-02-23 18:05:09,800 WARN L147 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size 23 [2021-02-23 18:05:09,830 WARN L141 QuantifierPusher]: treesize reduction 5, result has 84.8 percent of original size [2021-02-23 18:05:09,831 WARN L147 QuantifierPusher]: treesize reduction 5, result has 84.8 percent of original size 28 [2021-02-23 18:05:09,862 WARN L141 QuantifierPusher]: treesize reduction 5, result has 84.8 percent of original size [2021-02-23 18:05:09,863 WARN L147 QuantifierPusher]: treesize reduction 5, result has 84.8 percent of original size 28 [2021-02-23 18:05:09,864 WARN L141 QuantifierPusher]: treesize reduction 5, result has 88.4 percent of original size [2021-02-23 18:05:09,865 WARN L147 QuantifierPusher]: treesize reduction 5, result has 88.4 percent of original size 38 [2021-02-23 18:05:09,901 WARN L141 QuantifierPusher]: treesize reduction 9, result has 85.5 percent of original size [2021-02-23 18:05:09,902 WARN L147 QuantifierPusher]: treesize reduction 9, result has 85.5 percent of original size 53 [2021-02-23 18:05:09,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-23 18:05:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:09,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:09,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 18:05:10,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:10,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-23 18:05:10,037 WARN L141 QuantifierPusher]: treesize reduction 5, result has 82.8 percent of original size [2021-02-23 18:05:10,038 WARN L147 QuantifierPusher]: treesize reduction 5, result has 82.8 percent of original size 24 [2021-02-23 18:05:10,083 WARN L141 QuantifierPusher]: treesize reduction 5, result has 88.6 percent of original size [2021-02-23 18:05:10,084 WARN L147 QuantifierPusher]: treesize reduction 5, result has 88.6 percent of original size 39 [2021-02-23 18:05:10,136 WARN L141 QuantifierPusher]: treesize reduction 5, result has 88.6 percent of original size [2021-02-23 18:05:10,137 WARN L147 QuantifierPusher]: treesize reduction 5, result has 88.6 percent of original size 39 [2021-02-23 18:05:10,138 WARN L141 QuantifierPusher]: treesize reduction 5, result has 90.7 percent of original size [2021-02-23 18:05:10,139 WARN L147 QuantifierPusher]: treesize reduction 5, result has 90.7 percent of original size 49 [2021-02-23 18:05:10,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:10,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-02-23 18:05:10,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-02-23 18:05:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:10,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:10,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:10,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:10,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:05:10,331 WARN L141 QuantifierPusher]: treesize reduction 10, result has 69.7 percent of original size [2021-02-23 18:05:10,332 WARN L147 QuantifierPusher]: treesize reduction 10, result has 69.7 percent of original size 23 [2021-02-23 18:05:10,409 WARN L141 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-02-23 18:05:10,410 WARN L147 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size 30 [2021-02-23 18:05:10,488 WARN L141 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-02-23 18:05:10,489 WARN L147 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size 35 [2021-02-23 18:05:10,551 WARN L141 QuantifierPusher]: treesize reduction 10, result has 75.6 percent of original size [2021-02-23 18:05:10,552 WARN L147 QuantifierPusher]: treesize reduction 10, result has 75.6 percent of original size 31 [2021-02-23 18:05:10,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:10,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-23 18:05:10,685 WARN L141 QuantifierPusher]: treesize reduction 45, result has 69.6 percent of original size [2021-02-23 18:05:10,686 WARN L147 QuantifierPusher]: treesize reduction 45, result has 69.6 percent of original size 103 [2021-02-23 18:05:10,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:10,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-23 18:05:10,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:10,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-02-23 18:05:10,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:10,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-02-23 18:05:11,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:11,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-02-23 18:05:11,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:11,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-02-23 18:05:11,346 WARN L141 QuantifierPusher]: treesize reduction 5, result has 91.4 percent of original size [2021-02-23 18:05:11,346 WARN L147 QuantifierPusher]: treesize reduction 5, result has 91.4 percent of original size 53 [2021-02-23 18:05:11,508 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-23 18:05:11,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166929208] [2021-02-23 18:05:11,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:05:11,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-02-23 18:05:11,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812684902] [2021-02-23 18:05:11,509 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-02-23 18:05:11,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:05:11,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-02-23 18:05:11,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=1248, Unknown=0, NotChecked=0, Total=1332 [2021-02-23 18:05:11,511 INFO L87 Difference]: Start difference. First operand 113 states and 116 transitions. Second operand 37 states. [2021-02-23 18:05:12,722 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2021-02-23 18:05:14,261 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2021-02-23 18:05:14,459 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-02-23 18:05:14,671 WARN L202 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2021-02-23 18:05:14,936 WARN L202 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 78 [2021-02-23 18:05:15,189 WARN L202 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 82 [2021-02-23 18:05:15,444 WARN L202 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 86 [2021-02-23 18:05:15,716 WARN L202 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 84 [2021-02-23 18:05:15,951 WARN L202 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 83 [2021-02-23 18:05:16,176 WARN L202 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 81 [2021-02-23 18:05:16,380 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 84 [2021-02-23 18:05:16,622 WARN L202 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 85 [2021-02-23 18:05:16,858 WARN L202 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2021-02-23 18:05:17,158 WARN L202 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 86 [2021-02-23 18:05:17,477 WARN L202 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 85 [2021-02-23 18:05:17,729 WARN L202 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 86 [2021-02-23 18:05:17,964 WARN L202 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2021-02-23 18:05:18,265 WARN L202 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 88 [2021-02-23 18:05:18,565 WARN L202 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 88 [2021-02-23 18:05:18,877 WARN L202 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2021-02-23 18:05:19,121 WARN L202 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2021-02-23 18:05:19,406 WARN L202 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 81 [2021-02-23 18:05:19,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:05:19,714 INFO L93 Difference]: Finished difference Result 145 states and 149 transitions. [2021-02-23 18:05:19,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-02-23 18:05:19,715 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 115 [2021-02-23 18:05:19,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:05:19,717 INFO L225 Difference]: With dead ends: 145 [2021-02-23 18:05:19,717 INFO L226 Difference]: Without dead ends: 132 [2021-02-23 18:05:19,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=703, Invalid=5149, Unknown=0, NotChecked=0, Total=5852 [2021-02-23 18:05:19,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-02-23 18:05:19,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 116. [2021-02-23 18:05:19,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2021-02-23 18:05:19,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 119 transitions. [2021-02-23 18:05:19,755 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 119 transitions. Word has length 115 [2021-02-23 18:05:19,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:05:19,755 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 119 transitions. [2021-02-23 18:05:19,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2021-02-23 18:05:19,756 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 119 transitions. [2021-02-23 18:05:19,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-02-23 18:05:19,757 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:05:19,757 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:05:19,757 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 18:05:19,758 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:05:19,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:05:19,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1254377483, now seen corresponding path program 3 times [2021-02-23 18:05:19,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:05:19,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857864414] [2021-02-23 18:05:19,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:05:19,762 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:05:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:19,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:19,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:19,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:19,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:05:19,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:19,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 18:05:19,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:19,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-23 18:05:19,941 WARN L141 QuantifierPusher]: treesize reduction 29, result has 56.7 percent of original size [2021-02-23 18:05:19,941 WARN L147 QuantifierPusher]: treesize reduction 29, result has 56.7 percent of original size 38 [2021-02-23 18:05:19,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:19,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:19,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:05:19,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:19,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:19,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:20,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 18:05:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:20,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:20,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:20,020 WARN L141 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-02-23 18:05:20,021 WARN L147 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size 9 [2021-02-23 18:05:20,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:20,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:05:20,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:20,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:05:20,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 18:05:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:20,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:20,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:05:20,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:20,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 18:05:20,111 WARN L141 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size [2021-02-23 18:05:20,112 WARN L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-02-23 18:05:20,129 WARN L141 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size [2021-02-23 18:05:20,130 WARN L147 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size 18 [2021-02-23 18:05:20,153 WARN L141 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-02-23 18:05:20,154 WARN L147 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size 21 [2021-02-23 18:05:20,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-23 18:05:20,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:20,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:20,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:05:20,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:20,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-23 18:05:20,256 WARN L141 QuantifierPusher]: treesize reduction 5, result has 84.4 percent of original size [2021-02-23 18:05:20,257 WARN L147 QuantifierPusher]: treesize reduction 5, result has 84.4 percent of original size 27 [2021-02-23 18:05:20,290 WARN L141 QuantifierPusher]: treesize reduction 5, result has 86.5 percent of original size [2021-02-23 18:05:20,291 WARN L147 QuantifierPusher]: treesize reduction 5, result has 86.5 percent of original size 32 [2021-02-23 18:05:20,327 WARN L141 QuantifierPusher]: treesize reduction 5, result has 86.5 percent of original size [2021-02-23 18:05:20,328 WARN L147 QuantifierPusher]: treesize reduction 5, result has 86.5 percent of original size 32 [2021-02-23 18:05:20,329 WARN L141 QuantifierPusher]: treesize reduction 5, result has 89.4 percent of original size [2021-02-23 18:05:20,329 WARN L147 QuantifierPusher]: treesize reduction 5, result has 89.4 percent of original size 42 [2021-02-23 18:05:20,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:20,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-02-23 18:05:20,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-23 18:05:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:20,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:20,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-23 18:05:20,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:20,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 18:05:20,495 WARN L141 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-02-23 18:05:20,495 WARN L147 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size 21 [2021-02-23 18:05:20,530 WARN L141 QuantifierPusher]: treesize reduction 5, result has 86.1 percent of original size [2021-02-23 18:05:20,531 WARN L147 QuantifierPusher]: treesize reduction 5, result has 86.1 percent of original size 31 [2021-02-23 18:05:20,570 WARN L141 QuantifierPusher]: treesize reduction 5, result has 86.1 percent of original size [2021-02-23 18:05:20,571 WARN L147 QuantifierPusher]: treesize reduction 5, result has 86.1 percent of original size 31 [2021-02-23 18:05:20,572 WARN L141 QuantifierPusher]: treesize reduction 5, result has 89.1 percent of original size [2021-02-23 18:05:20,572 WARN L147 QuantifierPusher]: treesize reduction 5, result has 89.1 percent of original size 41 [2021-02-23 18:05:20,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:20,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-02-23 18:05:20,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-02-23 18:05:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:20,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:20,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:20,704 WARN L141 QuantifierPusher]: treesize reduction 11, result has 59.3 percent of original size [2021-02-23 18:05:20,704 WARN L147 QuantifierPusher]: treesize reduction 11, result has 59.3 percent of original size 16 [2021-02-23 18:05:20,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:20,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-23 18:05:20,773 WARN L141 QuantifierPusher]: treesize reduction 50, result has 36.7 percent of original size [2021-02-23 18:05:20,773 WARN L147 QuantifierPusher]: treesize reduction 50, result has 36.7 percent of original size 29 [2021-02-23 18:05:20,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:20,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-23 18:05:20,866 WARN L141 QuantifierPusher]: treesize reduction 16, result has 80.2 percent of original size [2021-02-23 18:05:20,869 WARN L147 QuantifierPusher]: treesize reduction 16, result has 80.2 percent of original size 65 [2021-02-23 18:05:20,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:20,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-23 18:05:21,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:21,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-23 18:05:21,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:21,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-02-23 18:05:21,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:21,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-23 18:05:21,277 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-23 18:05:21,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857864414] [2021-02-23 18:05:21,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:05:21,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-02-23 18:05:21,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030249673] [2021-02-23 18:05:21,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-02-23 18:05:21,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:05:21,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-02-23 18:05:21,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1162, Unknown=0, NotChecked=0, Total=1260 [2021-02-23 18:05:21,279 INFO L87 Difference]: Start difference. First operand 116 states and 119 transitions. Second operand 36 states. [2021-02-23 18:05:23,783 WARN L202 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2021-02-23 18:05:24,661 WARN L202 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2021-02-23 18:05:25,069 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2021-02-23 18:05:25,292 WARN L202 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-02-23 18:05:25,606 WARN L202 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2021-02-23 18:05:25,809 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2021-02-23 18:05:25,989 WARN L202 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2021-02-23 18:05:26,216 WARN L202 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-02-23 18:05:26,528 WARN L202 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2021-02-23 18:05:26,750 WARN L202 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2021-02-23 18:05:26,954 WARN L202 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2021-02-23 18:05:27,182 WARN L202 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2021-02-23 18:05:27,497 WARN L202 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2021-02-23 18:05:27,697 WARN L202 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2021-02-23 18:05:27,881 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2021-02-23 18:05:28,096 WARN L202 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2021-02-23 18:05:28,528 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2021-02-23 18:05:28,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:05:28,668 INFO L93 Difference]: Finished difference Result 177 states and 183 transitions. [2021-02-23 18:05:28,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-02-23 18:05:28,669 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 123 [2021-02-23 18:05:28,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:05:28,671 INFO L225 Difference]: With dead ends: 177 [2021-02-23 18:05:28,671 INFO L226 Difference]: Without dead ends: 154 [2021-02-23 18:05:28,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1356 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=845, Invalid=5635, Unknown=0, NotChecked=0, Total=6480 [2021-02-23 18:05:28,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-02-23 18:05:28,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 135. [2021-02-23 18:05:28,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2021-02-23 18:05:28,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 137 transitions. [2021-02-23 18:05:28,707 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 137 transitions. Word has length 123 [2021-02-23 18:05:28,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:05:28,707 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 137 transitions. [2021-02-23 18:05:28,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2021-02-23 18:05:28,708 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 137 transitions. [2021-02-23 18:05:28,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-02-23 18:05:28,709 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:05:28,709 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:05:28,709 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 18:05:28,709 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:05:28,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:05:28,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1940013816, now seen corresponding path program 3 times [2021-02-23 18:05:28,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:05:28,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817882319] [2021-02-23 18:05:28,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:05:28,714 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:05:28,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:05:28,749 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:05:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:05:28,785 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:05:28,840 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 18:05:28,840 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 18:05:28,841 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 18:05:28,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:05:28 BoogieIcfgContainer [2021-02-23 18:05:28,866 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:05:28,867 INFO L168 Benchmark]: Toolchain (without parser) took 39094.28 ms. Allocated memory was 152.0 MB in the beginning and 350.2 MB in the end (delta: 198.2 MB). Free memory was 126.5 MB in the beginning and 240.0 MB in the end (delta: -113.6 MB). Peak memory consumption was 84.9 MB. Max. memory is 8.0 GB. [2021-02-23 18:05:28,867 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 152.0 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:05:28,867 INFO L168 Benchmark]: CACSL2BoogieTranslator took 658.91 ms. Allocated memory is still 152.0 MB. Free memory was 125.4 MB in the beginning and 103.2 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-23 18:05:28,868 INFO L168 Benchmark]: Boogie Preprocessor took 123.78 ms. Allocated memory is still 152.0 MB. Free memory was 103.2 MB in the beginning and 100.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:05:28,868 INFO L168 Benchmark]: RCFGBuilder took 833.18 ms. Allocated memory is still 152.0 MB. Free memory was 100.6 MB in the beginning and 89.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 12.4 MB. Max. memory is 8.0 GB. [2021-02-23 18:05:28,868 INFO L168 Benchmark]: TraceAbstraction took 37458.40 ms. Allocated memory was 152.0 MB in the beginning and 350.2 MB in the end (delta: 198.2 MB). Free memory was 89.2 MB in the beginning and 240.0 MB in the end (delta: -150.8 MB). Peak memory consumption was 47.4 MB. Max. memory is 8.0 GB. [2021-02-23 18:05:28,869 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 152.0 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 658.91 ms. Allocated memory is still 152.0 MB. Free memory was 125.4 MB in the beginning and 103.2 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 123.78 ms. Allocated memory is still 152.0 MB. Free memory was 103.2 MB in the beginning and 100.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 833.18 ms. Allocated memory is still 152.0 MB. Free memory was 100.6 MB in the beginning and 89.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 12.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 37458.40 ms. Allocated memory was 152.0 MB in the beginning and 350.2 MB in the end (delta: 198.2 MB). Free memory was 89.2 MB in the beginning and 240.0 MB in the end (delta: -150.8 MB). Peak memory consumption was 47.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L533] mlist *head; [L554] int i; [L555] mlist *mylist, *temp; [L556] CALL insert_list(mylist,2) [L542] l = (mlist*)malloc(sizeof(mlist)) [L543] l->key = k [L544] COND TRUE head==((void *)0) [L545] l->next = ((void *)0) [L550] head = l [L551] return 0; [L556] RET insert_list(mylist,2) [L557] CALL insert_list(mylist,5) [L542] l = (mlist*)malloc(sizeof(mlist)) [L543] l->key = k [L544] COND FALSE !(head==((void *)0)) [L547] l->key = k [L548] l->next = head [L550] head = l [L551] return 0; [L557] RET insert_list(mylist,5) [L558] CALL insert_list(mylist,1) [L542] l = (mlist*)malloc(sizeof(mlist)) [L543] l->key = k [L544] COND FALSE !(head==((void *)0)) [L547] l->key = k [L548] l->next = head [L550] head = l [L551] return 0; [L558] RET insert_list(mylist,1) [L559] CALL insert_list(mylist,3) [L542] l = (mlist*)malloc(sizeof(mlist)) [L543] l->key = k [L544] COND FALSE !(head==((void *)0)) [L547] l->key = k [L548] l->next = head [L550] head = l [L551] return 0; [L559] RET insert_list(mylist,3) [L560] CALL, EXPR search_list(head,2) [L535] l = head [L536] l!=((void *)0) && l->key!=k [L536] EXPR l->key [L536] l!=((void *)0) && l->key!=k [L536] COND TRUE l!=((void *)0) && l->key!=k [L537] EXPR l->next [L537] l = l->next [L536] l!=((void *)0) && l->key!=k [L536] EXPR l->key [L536] l!=((void *)0) && l->key!=k [L536] COND TRUE l!=((void *)0) && l->key!=k [L537] EXPR l->next [L537] l = l->next [L536] l!=((void *)0) && l->key!=k [L536] EXPR l->key [L536] l!=((void *)0) && l->key!=k [L536] COND TRUE l!=((void *)0) && l->key!=k [L537] EXPR l->next [L537] l = l->next [L536] l!=((void *)0) && l->key!=k [L536] EXPR l->key [L536] l!=((void *)0) && l->key!=k [L536] COND FALSE !(l!=((void *)0) && l->key!=k) [L539] return l; [L560] RET, EXPR search_list(head,2) [L560] temp = search_list(head,2) [L561] EXPR temp->key [L561] CALL __VERIFIER_assert(temp->key==1) [L14] COND TRUE !(cond) [L15] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 108 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 37.3s, OverallIterations: 9, TraceHistogramMax: 4, AutomataDifference: 29.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 535 SDtfs, 2246 SDslu, 2679 SDs, 0 SdLazy, 9298 SolverSat, 533 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 508 GetRequests, 135 SyntacticMatches, 5 SemanticMatches, 368 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3788 ImplicationChecksByTransitivity, 24.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=135occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 150 StatesRemovedByMinimization, 8 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...