/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:21:39,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:21:39,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:21:39,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 04:21:39,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 04:21:39,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 04:21:39,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 04:21:39,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 04:21:39,582 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 04:21:39,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 04:21:39,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 04:21:39,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 04:21:39,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:21:39,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:21:39,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:21:39,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:21:39,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:21:39,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:21:39,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:21:39,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:21:39,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:21:39,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:21:39,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:21:39,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:21:39,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 04:21:39,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 04:21:39,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 04:21:39,652 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 04:21:39,652 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 04:21:39,653 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 04:21:39,654 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 04:21:39,655 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 04:21:39,657 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 04:21:39,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 04:21:39,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 04:21:39,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 04:21:39,660 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 04:21:39,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 04:21:39,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:21:39,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:21:39,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:21:39,663 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:21:39,688 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:21:39,688 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:21:39,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:21:39,693 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:21:39,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:21:39,693 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:21:39,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:21:39,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:21:39,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:21:39,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:21:39,696 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:21:39,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:21:39,696 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:21:39,697 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:21:39,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:21:39,697 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:21:39,698 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:21:39,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:21:39,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:21:39,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:21:39,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:21:39,699 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:21:39,699 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:21:39,699 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:21:40,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:21:40,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:21:40,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:21:40,141 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:21:40,142 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:21:40,143 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2021-02-24 04:21:40,229 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/283851dc3/4bbc29e17b5f4555aa016a5117e6b9ff/FLAG8c2634402 [2021-02-24 04:21:40,942 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:21:40,943 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2021-02-24 04:21:40,961 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/283851dc3/4bbc29e17b5f4555aa016a5117e6b9ff/FLAG8c2634402 [2021-02-24 04:21:41,236 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/283851dc3/4bbc29e17b5f4555aa016a5117e6b9ff [2021-02-24 04:21:41,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:21:41,252 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:21:41,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:21:41,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:21:41,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:21:41,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:21:41" (1/1) ... [2021-02-24 04:21:41,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76c44804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:21:41, skipping insertion in model container [2021-02-24 04:21:41,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:21:41" (1/1) ... [2021-02-24 04:21:41,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:21:41,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:21:41,483 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i[296,309] [2021-02-24 04:21:41,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:21:41,649 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:21:41,666 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i[296,309] [2021-02-24 04:21:41,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:21:41,815 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:21:41,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:21:41 WrapperNode [2021-02-24 04:21:41,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:21:41,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:21:41,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:21:41,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:21:41,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:21:41" (1/1) ... [2021-02-24 04:21:41,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:21:41" (1/1) ... [2021-02-24 04:21:41,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:21:41" (1/1) ... [2021-02-24 04:21:41,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:21:41" (1/1) ... [2021-02-24 04:21:41,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:21:41" (1/1) ... [2021-02-24 04:21:41,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:21:41" (1/1) ... [2021-02-24 04:21:41,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:21:41" (1/1) ... [2021-02-24 04:21:41,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:21:41,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:21:41,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:21:41,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:21:41,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:21:41" (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 [2021-02-24 04:21:42,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:21:42,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:21:42,045 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:21:42,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2021-02-24 04:21:42,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-24 04:21:42,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-24 04:21:42,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-02-24 04:21:42,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-02-24 04:21:42,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-02-24 04:21:42,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2021-02-24 04:21:42,046 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2021-02-24 04:21:42,046 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-02-24 04:21:42,046 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-02-24 04:21:42,046 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:21:42,047 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:21:42,047 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:21:42,047 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:21:42,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:21:42,047 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2021-02-24 04:21:42,047 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-24 04:21:42,048 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-24 04:21:42,048 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-24 04:21:42,048 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-24 04:21:42,048 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-24 04:21:42,048 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-24 04:21:42,048 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-24 04:21:42,049 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-24 04:21:42,049 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-24 04:21:42,049 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-24 04:21:42,049 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-24 04:21:42,049 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-24 04:21:42,049 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-24 04:21:42,050 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-24 04:21:42,050 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-24 04:21:42,050 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-24 04:21:42,050 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-24 04:21:42,050 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-24 04:21:42,050 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-02-24 04:21:42,051 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-02-24 04:21:42,051 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-02-24 04:21:42,051 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-24 04:21:42,051 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-24 04:21:42,051 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-24 04:21:42,051 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-24 04:21:42,051 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-24 04:21:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-24 04:21:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-24 04:21:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-24 04:21:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-24 04:21:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-24 04:21:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-24 04:21:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-24 04:21:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-24 04:21:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-24 04:21:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-24 04:21:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-24 04:21:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-24 04:21:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-24 04:21:42,054 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-24 04:21:42,054 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-24 04:21:42,054 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-24 04:21:42,054 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-24 04:21:42,054 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-24 04:21:42,054 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-24 04:21:42,055 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-24 04:21:42,055 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-24 04:21:42,055 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-24 04:21:42,055 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-24 04:21:42,055 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-24 04:21:42,055 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-24 04:21:42,056 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-24 04:21:42,056 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-24 04:21:42,056 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-24 04:21:42,056 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-24 04:21:42,056 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 04:21:42,056 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-24 04:21:42,057 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-24 04:21:42,057 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-24 04:21:42,057 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-24 04:21:42,057 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-24 04:21:42,057 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-24 04:21:42,057 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-24 04:21:42,057 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-24 04:21:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-24 04:21:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-24 04:21:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-24 04:21:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-24 04:21:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-24 04:21:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-24 04:21:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-24 04:21:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-24 04:21:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-24 04:21:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-24 04:21:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-24 04:21:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-24 04:21:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-24 04:21:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-24 04:21:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-24 04:21:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-24 04:21:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-24 04:21:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-24 04:21:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-24 04:21:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-24 04:21:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-24 04:21:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-24 04:21:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-24 04:21:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-24 04:21:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-24 04:21:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-24 04:21:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-24 04:21:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-24 04:21:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-24 04:21:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-24 04:21:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-24 04:21:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-24 04:21:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-24 04:21:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-24 04:21:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-24 04:21:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-24 04:21:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-24 04:21:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-24 04:21:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-24 04:21:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-24 04:21:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-24 04:21:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-24 04:21:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:21:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2021-02-24 04:21:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2021-02-24 04:21:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-02-24 04:21:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-02-24 04:21:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:21:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:21:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:21:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-02-24 04:21:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:21:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-24 04:21:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-24 04:21:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:21:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:21:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:21:42,608 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:21:42,609 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-24 04:21:42,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:21:42 BoogieIcfgContainer [2021-02-24 04:21:42,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:21:42,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:21:42,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:21:42,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:21:42,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:21:41" (1/3) ... [2021-02-24 04:21:42,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37602147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:21:42, skipping insertion in model container [2021-02-24 04:21:42,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:21:41" (2/3) ... [2021-02-24 04:21:42,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37602147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:21:42, skipping insertion in model container [2021-02-24 04:21:42,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:21:42" (3/3) ... [2021-02-24 04:21:42,620 INFO L111 eAbstractionObserver]: Analyzing ICFG rule60_list2.c_1.i [2021-02-24 04:21:42,627 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:21:42,632 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:21:42,652 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:21:42,676 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:21:42,677 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:21:42,677 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:21:42,677 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:21:42,677 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:21:42,678 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:21:42,678 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:21:42,678 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:21:42,695 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2021-02-24 04:21:42,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-24 04:21:42,704 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:21:42,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:21:42,706 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:21:42,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:21:42,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1068471701, now seen corresponding path program 1 times [2021-02-24 04:21:42,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:21:42,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811685390] [2021-02-24 04:21:42,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:21:42,800 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:21:42,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:42,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:42,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:42,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:42,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:42,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:42,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:43,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:43,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:43,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:43,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:21:43,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:43,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:43,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:21:43,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:43,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:43,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:43,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:21:43,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811685390] [2021-02-24 04:21:43,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:21:43,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-24 04:21:43,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149309242] [2021-02-24 04:21:43,120 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 04:21:43,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:21:43,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 04:21:43,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-24 04:21:43,143 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 7 states. [2021-02-24 04:21:43,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:21:43,665 INFO L93 Difference]: Finished difference Result 134 states and 163 transitions. [2021-02-24 04:21:43,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-24 04:21:43,667 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2021-02-24 04:21:43,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:21:43,678 INFO L225 Difference]: With dead ends: 134 [2021-02-24 04:21:43,678 INFO L226 Difference]: Without dead ends: 72 [2021-02-24 04:21:43,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-02-24 04:21:43,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-02-24 04:21:43,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2021-02-24 04:21:43,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-02-24 04:21:43,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2021-02-24 04:21:43,741 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 26 [2021-02-24 04:21:43,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:21:43,742 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2021-02-24 04:21:43,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 04:21:43,742 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2021-02-24 04:21:43,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-02-24 04:21:43,745 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:21:43,745 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:21:43,746 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:21:43,746 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:21:43,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:21:43,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1890572304, now seen corresponding path program 1 times [2021-02-24 04:21:43,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:21:43,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257506436] [2021-02-24 04:21:43,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:21:43,754 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:21:43,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:43,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:43,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:43,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:43,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:21:43,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:43,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:21:43,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:43,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:43,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:21:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:43,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:43,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:43,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-24 04:21:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:44,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:44,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:44,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:44,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:21:44,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:44,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:21:44,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-24 04:21:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:44,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:44,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:44,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:44,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:21:44,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-24 04:21:44,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:44,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:44,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:44,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-24 04:21:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:44,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:44,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:44,121 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-02-24 04:21:44,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257506436] [2021-02-24 04:21:44,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:21:44,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 04:21:44,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130368802] [2021-02-24 04:21:44,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 04:21:44,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:21:44,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 04:21:44,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-24 04:21:44,125 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand 9 states. [2021-02-24 04:21:44,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:21:44,445 INFO L93 Difference]: Finished difference Result 107 states and 122 transitions. [2021-02-24 04:21:44,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-24 04:21:44,445 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2021-02-24 04:21:44,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:21:44,448 INFO L225 Difference]: With dead ends: 107 [2021-02-24 04:21:44,448 INFO L226 Difference]: Without dead ends: 78 [2021-02-24 04:21:44,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-02-24 04:21:44,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-02-24 04:21:44,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2021-02-24 04:21:44,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-02-24 04:21:44,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2021-02-24 04:21:44,471 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 66 [2021-02-24 04:21:44,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:21:44,472 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2021-02-24 04:21:44,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 04:21:44,472 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2021-02-24 04:21:44,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-02-24 04:21:44,474 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:21:44,475 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:21:44,475 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:21:44,475 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:21:44,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:21:44,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1258103149, now seen corresponding path program 1 times [2021-02-24 04:21:44,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:21:44,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62711645] [2021-02-24 04:21:44,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:21:44,482 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:21:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:44,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:44,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:44,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:44,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:21:44,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:44,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:21:44,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:44,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:44,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:21:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:44,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:44,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:44,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-24 04:21:44,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:44,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:44,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:44,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-24 04:21:44,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:44,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:44,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:44,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-24 04:21:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:44,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:44,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:44,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:44,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:21:44,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:44,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:21:44,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-24 04:21:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:44,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:44,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:44,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:44,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:21:44,729 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-02-24 04:21:44,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62711645] [2021-02-24 04:21:44,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:21:44,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 04:21:44,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682447368] [2021-02-24 04:21:44,730 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 04:21:44,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:21:44,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 04:21:44,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-24 04:21:44,732 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand 9 states. [2021-02-24 04:21:45,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:21:45,009 INFO L93 Difference]: Finished difference Result 104 states and 116 transitions. [2021-02-24 04:21:45,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-24 04:21:45,010 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2021-02-24 04:21:45,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:21:45,012 INFO L225 Difference]: With dead ends: 104 [2021-02-24 04:21:45,012 INFO L226 Difference]: Without dead ends: 70 [2021-02-24 04:21:45,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-02-24 04:21:45,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-02-24 04:21:45,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2021-02-24 04:21:45,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-02-24 04:21:45,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2021-02-24 04:21:45,029 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 66 [2021-02-24 04:21:45,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:21:45,030 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2021-02-24 04:21:45,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 04:21:45,030 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2021-02-24 04:21:45,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-02-24 04:21:45,032 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:21:45,032 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:21:45,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 04:21:45,032 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:21:45,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:21:45,033 INFO L82 PathProgramCache]: Analyzing trace with hash 795212650, now seen corresponding path program 1 times [2021-02-24 04:21:45,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:21:45,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974248233] [2021-02-24 04:21:45,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:21:45,039 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:21:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:45,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:45,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:21:45,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:45,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:21:45,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:45,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:21:45,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:45,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:21:45,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:45,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:21:45,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:45,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:21:45,153 WARN L141 QuantifierPusher]: treesize reduction 13, result has 38.1 percent of original size [2021-02-24 04:21:45,154 WARN L147 QuantifierPusher]: treesize reduction 13, result has 38.1 percent of original size 8 [2021-02-24 04:21:45,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:45,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:45,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:21:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:45,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:45,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:45,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:45,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:45,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:45,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:21:45,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-24 04:21:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:45,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:45,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:45,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:45,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:21:45,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-24 04:21:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:45,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:45,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:45,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:45,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:45,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:45,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:21:45,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-24 04:21:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:45,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:45,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:45,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:45,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:21:45,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:45,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:21:45,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-24 04:21:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:45,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:45,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:45,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:45,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:45,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:45,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:21:45,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:45,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:21:45,420 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-02-24 04:21:45,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974248233] [2021-02-24 04:21:45,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:21:45,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-24 04:21:45,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179622999] [2021-02-24 04:21:45,421 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-24 04:21:45,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:21:45,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-24 04:21:45,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-02-24 04:21:45,422 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand 17 states. [2021-02-24 04:21:46,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:21:46,807 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2021-02-24 04:21:46,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-24 04:21:46,808 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 66 [2021-02-24 04:21:46,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:21:46,816 INFO L225 Difference]: With dead ends: 113 [2021-02-24 04:21:46,816 INFO L226 Difference]: Without dead ends: 110 [2021-02-24 04:21:46,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2021-02-24 04:21:46,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-02-24 04:21:46,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 93. [2021-02-24 04:21:46,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2021-02-24 04:21:46,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 106 transitions. [2021-02-24 04:21:46,866 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 106 transitions. Word has length 66 [2021-02-24 04:21:46,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:21:46,869 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 106 transitions. [2021-02-24 04:21:46,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-24 04:21:46,869 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 106 transitions. [2021-02-24 04:21:46,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-02-24 04:21:46,871 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:21:46,872 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:21:46,872 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 04:21:46,872 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:21:46,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:21:46,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1437147983, now seen corresponding path program 1 times [2021-02-24 04:21:46,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:21:46,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051670183] [2021-02-24 04:21:46,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:21:46,881 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:21:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:46,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:46,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:21:46,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:46,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:21:46,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:46,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:21:46,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:46,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:21:46,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:46,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:21:47,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:47,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:21:47,016 WARN L141 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size [2021-02-24 04:21:47,024 WARN L147 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size 12 [2021-02-24 04:21:47,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:47,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:47,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:21:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:47,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:47,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:47,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:47,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:47,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:47,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:21:47,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-24 04:21:47,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:47,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:47,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:47,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:47,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:21:47,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:47,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:21:47,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-24 04:21:47,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:47,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:47,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:47,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:47,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:47,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:47,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:21:47,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:47,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:21:47,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-24 04:21:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:47,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:47,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:47,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-24 04:21:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:47,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:47,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:47,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-24 04:21:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:47,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:47,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:47,311 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-24 04:21:47,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051670183] [2021-02-24 04:21:47,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:21:47,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-02-24 04:21:47,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323205978] [2021-02-24 04:21:47,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-24 04:21:47,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:21:47,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-24 04:21:47,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-02-24 04:21:47,314 INFO L87 Difference]: Start difference. First operand 93 states and 106 transitions. Second operand 18 states. [2021-02-24 04:21:48,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:21:48,536 INFO L93 Difference]: Finished difference Result 118 states and 134 transitions. [2021-02-24 04:21:48,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-24 04:21:48,537 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 75 [2021-02-24 04:21:48,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:21:48,539 INFO L225 Difference]: With dead ends: 118 [2021-02-24 04:21:48,539 INFO L226 Difference]: Without dead ends: 109 [2021-02-24 04:21:48,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2021-02-24 04:21:48,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-02-24 04:21:48,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 99. [2021-02-24 04:21:48,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2021-02-24 04:21:48,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 112 transitions. [2021-02-24 04:21:48,566 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 112 transitions. Word has length 75 [2021-02-24 04:21:48,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:21:48,566 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 112 transitions. [2021-02-24 04:21:48,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-24 04:21:48,566 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 112 transitions. [2021-02-24 04:21:48,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-02-24 04:21:48,568 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:21:48,568 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:21:48,568 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 04:21:48,568 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:21:48,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:21:48,569 INFO L82 PathProgramCache]: Analyzing trace with hash -2120960867, now seen corresponding path program 1 times [2021-02-24 04:21:48,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:21:48,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360599892] [2021-02-24 04:21:48,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:21:48,573 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:21:48,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:48,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:48,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:48,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:48,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:48,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:48,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:48,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:48,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:21:48,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:48,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:21:48,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:48,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:21:48,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:48,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:21:48,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:48,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:21:48,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:48,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:48,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:21:48,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:48,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:48,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:48,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-24 04:21:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:48,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:48,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:48,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:48,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:48,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:48,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:48,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-24 04:21:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:48,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:48,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:48,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:48,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:48,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-24 04:21:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:48,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:48,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:48,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:48,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:21:48,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:48,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:21:48,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-24 04:21:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:48,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:48,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:48,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:48,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:48,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:48,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:21:48,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:48,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:21:48,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-24 04:21:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:48,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:48,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:48,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:48,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:49,010 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-24 04:21:49,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360599892] [2021-02-24 04:21:49,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:21:49,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-02-24 04:21:49,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686947701] [2021-02-24 04:21:49,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-24 04:21:49,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:21:49,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-24 04:21:49,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2021-02-24 04:21:49,012 INFO L87 Difference]: Start difference. First operand 99 states and 112 transitions. Second operand 23 states. [2021-02-24 04:21:50,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:21:50,682 INFO L93 Difference]: Finished difference Result 117 states and 134 transitions. [2021-02-24 04:21:50,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-24 04:21:50,683 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 76 [2021-02-24 04:21:50,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:21:50,685 INFO L225 Difference]: With dead ends: 117 [2021-02-24 04:21:50,685 INFO L226 Difference]: Without dead ends: 110 [2021-02-24 04:21:50,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=210, Invalid=1682, Unknown=0, NotChecked=0, Total=1892 [2021-02-24 04:21:50,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-02-24 04:21:50,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2021-02-24 04:21:50,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2021-02-24 04:21:50,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 119 transitions. [2021-02-24 04:21:50,714 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 119 transitions. Word has length 76 [2021-02-24 04:21:50,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:21:50,715 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 119 transitions. [2021-02-24 04:21:50,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-02-24 04:21:50,715 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 119 transitions. [2021-02-24 04:21:50,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-02-24 04:21:50,717 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:21:50,717 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:21:50,717 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 04:21:50,717 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:21:50,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:21:50,718 INFO L82 PathProgramCache]: Analyzing trace with hash 16866635, now seen corresponding path program 1 times [2021-02-24 04:21:50,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:21:50,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513114917] [2021-02-24 04:21:50,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:21:50,722 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:21:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:50,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:50,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:50,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:50,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:50,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:50,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:21:50,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:50,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:21:50,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:50,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:21:50,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:50,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:21:50,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:50,819 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:21:50,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:50,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:21:50,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:50,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:21:50,855 WARN L141 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-02-24 04:21:50,857 WARN L147 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size 21 [2021-02-24 04:21:50,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:50,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:50,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:21:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:50,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:50,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:50,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:50,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:50,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-24 04:21:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:51,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:51,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:51,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:51,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:21:51,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-24 04:21:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:51,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:51,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:51,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:51,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:51,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:51,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:21:51,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-24 04:21:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:51,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:51,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:51,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:51,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:21:51,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:51,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:21:51,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-24 04:21:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:51,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:51,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:51,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:51,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:51,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:51,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:21:51,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:51,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:21:51,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-24 04:21:51,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:51,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:51,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:51,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:51,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:51,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-02-24 04:21:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:51,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:51,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:51,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-24 04:21:51,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:51,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:51,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:21:51,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:51,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:21:51,394 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-02-24 04:21:51,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513114917] [2021-02-24 04:21:51,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:21:51,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-02-24 04:21:51,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895973975] [2021-02-24 04:21:51,396 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-24 04:21:51,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:21:51,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-24 04:21:51,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2021-02-24 04:21:51,397 INFO L87 Difference]: Start difference. First operand 108 states and 119 transitions. Second operand 24 states. [2021-02-24 04:21:53,237 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2021-02-24 04:21:53,574 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2021-02-24 04:21:53,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:21:53,908 INFO L93 Difference]: Finished difference Result 140 states and 149 transitions. [2021-02-24 04:21:53,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-02-24 04:21:53,909 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 90 [2021-02-24 04:21:53,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:21:53,912 INFO L225 Difference]: With dead ends: 140 [2021-02-24 04:21:53,912 INFO L226 Difference]: Without dead ends: 124 [2021-02-24 04:21:53,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=319, Invalid=2543, Unknown=0, NotChecked=0, Total=2862 [2021-02-24 04:21:53,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-02-24 04:21:53,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-02-24 04:21:53,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2021-02-24 04:21:53,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 133 transitions. [2021-02-24 04:21:53,951 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 133 transitions. Word has length 90 [2021-02-24 04:21:53,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:21:53,951 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 133 transitions. [2021-02-24 04:21:53,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-02-24 04:21:53,952 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 133 transitions. [2021-02-24 04:21:53,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-02-24 04:21:53,953 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:21:53,953 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:21:53,954 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-24 04:21:53,954 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:21:53,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:21:53,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1329248837, now seen corresponding path program 2 times [2021-02-24 04:21:53,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:21:53,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013984552] [2021-02-24 04:21:53,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:21:53,958 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:21:53,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:53,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:53,991 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:53,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:53,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:53,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:53,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:54,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:54,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:21:54,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:54,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:21:54,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:54,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:21:54,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:54,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:21:54,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:54,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:21:54,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:54,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:21:54,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:54,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:54,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:21:54,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:54,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:54,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:54,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-24 04:21:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:54,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:54,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:54,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:54,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:54,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:54,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:54,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-24 04:21:54,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:54,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:54,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:54,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:54,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:54,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-24 04:21:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:54,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:54,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:54,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:54,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:21:54,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:54,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:21:54,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-24 04:21:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:54,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:54,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:54,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:54,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:54,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:54,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:21:54,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:54,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:21:54,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-24 04:21:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:54,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:54,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:54,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-02-24 04:21:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:54,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:54,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:54,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:54,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:54,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-24 04:21:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:54,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:54,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:54,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:21:54,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013984552] [2021-02-24 04:21:54,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:21:54,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-02-24 04:21:54,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564470503] [2021-02-24 04:21:54,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-24 04:21:54,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:21:54,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-24 04:21:54,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2021-02-24 04:21:54,499 INFO L87 Difference]: Start difference. First operand 124 states and 133 transitions. Second operand 24 states. [2021-02-24 04:21:56,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:21:56,196 INFO L93 Difference]: Finished difference Result 139 states and 149 transitions. [2021-02-24 04:21:56,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-24 04:21:56,196 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 90 [2021-02-24 04:21:56,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:21:56,198 INFO L225 Difference]: With dead ends: 139 [2021-02-24 04:21:56,198 INFO L226 Difference]: Without dead ends: 134 [2021-02-24 04:21:56,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=232, Invalid=1748, Unknown=0, NotChecked=0, Total=1980 [2021-02-24 04:21:56,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-02-24 04:21:56,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2021-02-24 04:21:56,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2021-02-24 04:21:56,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 142 transitions. [2021-02-24 04:21:56,230 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 142 transitions. Word has length 90 [2021-02-24 04:21:56,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:21:56,230 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 142 transitions. [2021-02-24 04:21:56,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-02-24 04:21:56,230 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 142 transitions. [2021-02-24 04:21:56,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-02-24 04:21:56,232 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:21:56,232 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:21:56,232 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-24 04:21:56,232 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:21:56,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:21:56,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1789333268, now seen corresponding path program 1 times [2021-02-24 04:21:56,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:21:56,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839324927] [2021-02-24 04:21:56,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:21:56,237 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:21:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:56,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:56,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:56,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:56,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:56,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:56,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:56,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:56,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:56,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:56,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:56,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:56,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:21:56,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:56,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:21:56,323 WARN L141 QuantifierPusher]: treesize reduction 13, result has 38.1 percent of original size [2021-02-24 04:21:56,324 WARN L147 QuantifierPusher]: treesize reduction 13, result has 38.1 percent of original size 8 [2021-02-24 04:21:56,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:56,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:56,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:21:56,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:56,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:56,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:56,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:56,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:56,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-24 04:21:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:56,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:56,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:56,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:56,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:21:56,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-24 04:21:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:56,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:56,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:56,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:56,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:56,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:56,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:21:56,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-24 04:21:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:56,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:56,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:56,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:56,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:21:56,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:56,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:21:56,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-24 04:21:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:56,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:56,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:56,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:56,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:56,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:56,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:21:56,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:56,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:21:56,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-24 04:21:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:56,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:56,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:56,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-02-24 04:21:56,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:56,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:56,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:56,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-24 04:21:56,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:21:56,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:56,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:21:56,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:21:56,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:21:56,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:21:56,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839324927] [2021-02-24 04:21:56,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:21:56,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-02-24 04:21:56,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878674123] [2021-02-24 04:21:56,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-24 04:21:56,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:21:56,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-24 04:21:56,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-02-24 04:21:56,617 INFO L87 Difference]: Start difference. First operand 133 states and 142 transitions. Second operand 19 states. [2021-02-24 04:21:58,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:21:58,051 INFO L93 Difference]: Finished difference Result 160 states and 169 transitions. [2021-02-24 04:21:58,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-24 04:21:58,051 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 91 [2021-02-24 04:21:58,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:21:58,053 INFO L225 Difference]: With dead ends: 160 [2021-02-24 04:21:58,053 INFO L226 Difference]: Without dead ends: 147 [2021-02-24 04:21:58,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=253, Invalid=1469, Unknown=0, NotChecked=0, Total=1722 [2021-02-24 04:21:58,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-02-24 04:21:58,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 132. [2021-02-24 04:21:58,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2021-02-24 04:21:58,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 140 transitions. [2021-02-24 04:21:58,081 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 140 transitions. Word has length 91 [2021-02-24 04:21:58,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:21:58,082 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 140 transitions. [2021-02-24 04:21:58,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-24 04:21:58,082 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 140 transitions. [2021-02-24 04:21:58,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-02-24 04:21:58,083 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:21:58,083 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:21:58,083 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-24 04:21:58,084 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:21:58,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:21:58,084 INFO L82 PathProgramCache]: Analyzing trace with hash -2000657900, now seen corresponding path program 1 times [2021-02-24 04:21:58,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:21:58,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063070592] [2021-02-24 04:21:58,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:21:58,088 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:21:58,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:21:58,105 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:21:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:21:58,122 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:21:58,172 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 04:21:58,173 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 04:21:58,173 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-24 04:21:58,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:21:58 BoogieIcfgContainer [2021-02-24 04:21:58,194 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:21:58,195 INFO L168 Benchmark]: Toolchain (without parser) took 16954.52 ms. Allocated memory was 153.1 MB in the beginning and 320.9 MB in the end (delta: 167.8 MB). Free memory was 128.0 MB in the beginning and 238.4 MB in the end (delta: -110.4 MB). Peak memory consumption was 58.9 MB. Max. memory is 8.0 GB. [2021-02-24 04:21:58,196 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 153.1 MB. Free memory is still 126.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:21:58,196 INFO L168 Benchmark]: CACSL2BoogieTranslator took 559.76 ms. Allocated memory is still 153.1 MB. Free memory was 126.7 MB in the beginning and 104.6 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:21:58,196 INFO L168 Benchmark]: Boogie Preprocessor took 108.55 ms. Allocated memory is still 153.1 MB. Free memory was 104.6 MB in the beginning and 102.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 04:21:58,197 INFO L168 Benchmark]: RCFGBuilder took 684.39 ms. Allocated memory is still 153.1 MB. Free memory was 102.0 MB in the beginning and 92.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.2 MB. Max. memory is 8.0 GB. [2021-02-24 04:21:58,197 INFO L168 Benchmark]: TraceAbstraction took 15581.57 ms. Allocated memory was 153.1 MB in the beginning and 320.9 MB in the end (delta: 167.8 MB). Free memory was 92.6 MB in the beginning and 238.4 MB in the end (delta: -145.8 MB). Peak memory consumption was 22.5 MB. Max. memory is 8.0 GB. [2021-02-24 04:21:58,198 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 153.1 MB. Free memory is still 126.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 559.76 ms. Allocated memory is still 153.1 MB. Free memory was 126.7 MB in the beginning and 104.6 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 108.55 ms. Allocated memory is still 153.1 MB. Free memory was 104.6 MB in the beginning and 102.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 684.39 ms. Allocated memory is still 153.1 MB. Free memory was 102.0 MB in the beginning and 92.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 15581.57 ms. Allocated memory was 153.1 MB in the beginning and 320.9 MB in the end (delta: 167.8 MB). Free memory was 92.6 MB in the beginning and 238.4 MB in the end (delta: -145.8 MB). Peak memory consumption was 22.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L519] void * guard_malloc_counter = 0; [L534] struct list_head *elem = ((void *)0); [L544] static struct list_head head; [L546] struct list_head *dev1, *dev2; [L547] CALL, EXPR my_malloc(sizeof(*dev1)) [L529] CALL, EXPR __getMemory(size) [L522] (size > 0) ? (0) : __blast_assert () [L523] guard_malloc_counter++ [L524] COND FALSE !(!__VERIFIER_nondet_int()) [L526] return (void *) guard_malloc_counter; [L529] RET, EXPR __getMemory(size) [L529] return __getMemory(size); [L547] RET, EXPR my_malloc(sizeof(*dev1)) [L547] dev1 = my_malloc(sizeof(*dev1)) [L548] CALL, EXPR my_malloc(sizeof(*dev2)) [L529] CALL, EXPR __getMemory(size) [L522] (size > 0) ? (0) : __blast_assert () [L523] guard_malloc_counter++ [L524] COND FALSE !(!__VERIFIER_nondet_int()) [L526] return (void *) guard_malloc_counter; [L529] RET, EXPR __getMemory(size) [L529] return __getMemory(size); [L548] RET, EXPR my_malloc(sizeof(*dev2)) [L548] dev2 = my_malloc(sizeof(*dev2)) [L549] COND TRUE dev1!=((void *)0) && dev2!=((void *)0) [L550] CALL list_add(dev2, &head) [L536] (new!=elem) ? (0) : __blast_assert () [L537] COND FALSE !(__VERIFIER_nondet_int()) [L550] RET list_add(dev2, &head) [L551] CALL list_add(dev1, &head) [L536] (new!=elem) ? (0) : __blast_assert () [L537] COND TRUE __VERIFIER_nondet_int() [L538] elem = new [L551] RET list_add(dev1, &head) [L552] CALL list_del(dev2) [L541] COND FALSE !(entry==elem) [L552] RET list_del(dev2) [L553] CALL list_add(dev2, &head) [L536] (new!=elem) ? (0) : __blast_assert () [L537] COND FALSE !(__VERIFIER_nondet_int()) [L553] RET list_add(dev2, &head) [L554] CALL list_add(dev1, &head) [L536] (new!=elem) ? (0) : __blast_assert () [L536] CALL __blast_assert () [L6] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 14 procedures, 102 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.5s, OverallIterations: 10, TraceHistogramMax: 4, AutomataDifference: 11.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 576 SDtfs, 1038 SDslu, 2500 SDs, 0 SdLazy, 6502 SolverSat, 517 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 378 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1482 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133occurred 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, 9 MinimizatonAttempts, 57 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...