/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-b7b32d2 [2021-02-22 01:56:30,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:56:30,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:56:30,708 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 01:56:30,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:56:30,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:56:30,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:56:30,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:56:30,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:56:30,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:56:30,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:56:30,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:56:30,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:56:30,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:56:30,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:56:30,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:56:30,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 01:56:30,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:56:30,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:56:30,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:56:30,817 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:56:30,839 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:56:30,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:56:30,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:56:30,844 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:56:30,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:56:30,844 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:56:30,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:56:30,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:56:30,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:56:30,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:56:30,846 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:56:30,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:56:30,846 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:56:30,847 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:56:30,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:56:30,847 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:56:30,847 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:56:30,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:56:30,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:56:30,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:56:30,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:56:30,848 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:56:30,849 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:56:30,849 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:56:31,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:56:31,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:56:31,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:56:31,307 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:56:31,308 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:56:31,309 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2021-02-22 01:56:31,387 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb497e04f/7145bc8256e644d8bc0feb0f9ffb3836/FLAG84a3148dd [2021-02-22 01:56:32,038 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:56:32,039 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2021-02-22 01:56:32,054 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb497e04f/7145bc8256e644d8bc0feb0f9ffb3836/FLAG84a3148dd [2021-02-22 01:56:32,336 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb497e04f/7145bc8256e644d8bc0feb0f9ffb3836 [2021-02-22 01:56:32,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:56:32,354 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:56:32,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:56:32,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:56:32,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:56:32,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:56:32" (1/1) ... [2021-02-22 01:56:32,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@689dc41a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:32, skipping insertion in model container [2021-02-22 01:56:32,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:56:32" (1/1) ... [2021-02-22 01:56:32,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:56:32,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:56:32,564 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] [2021-02-22 01:56:32,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:56:32,736 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:56:32,751 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] [2021-02-22 01:56:32,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:56:32,865 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:56:32,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:32 WrapperNode [2021-02-22 01:56:32,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:56:32,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:56:32,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:56:32,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:56:32,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:32" (1/1) ... [2021-02-22 01:56:32,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:32" (1/1) ... [2021-02-22 01:56:32,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:32" (1/1) ... [2021-02-22 01:56:32,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:32" (1/1) ... [2021-02-22 01:56:32,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:32" (1/1) ... [2021-02-22 01:56:32,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:32" (1/1) ... [2021-02-22 01:56:32,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:32" (1/1) ... [2021-02-22 01:56:32,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:56:32,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:56:32,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:56:32,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:56:32,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:32" (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 [2021-02-22 01:56:33,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:56:33,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:56:33,042 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:56:33,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2021-02-22 01:56:33,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-22 01:56:33,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-22 01:56:33,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-02-22 01:56:33,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-02-22 01:56:33,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-02-22 01:56:33,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2021-02-22 01:56:33,043 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2021-02-22 01:56:33,044 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-02-22 01:56:33,044 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-02-22 01:56:33,044 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:56:33,044 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:56:33,044 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:56:33,044 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:56:33,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:56:33,045 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2021-02-22 01:56:33,045 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-22 01:56:33,045 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-22 01:56:33,045 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-22 01:56:33,045 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-22 01:56:33,046 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-22 01:56:33,046 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-22 01:56:33,046 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-22 01:56:33,046 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-22 01:56:33,046 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-22 01:56:33,047 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-22 01:56:33,047 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-22 01:56:33,047 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-22 01:56:33,047 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-22 01:56:33,047 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-22 01:56:33,047 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-22 01:56:33,048 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-22 01:56:33,048 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-22 01:56:33,048 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-22 01:56:33,048 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-02-22 01:56:33,048 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-02-22 01:56:33,048 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-02-22 01:56:33,048 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-22 01:56:33,049 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-22 01:56:33,049 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-22 01:56:33,049 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-22 01:56:33,049 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-22 01:56:33,049 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-22 01:56:33,049 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-22 01:56:33,049 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-22 01:56:33,050 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-22 01:56:33,050 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-22 01:56:33,050 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-22 01:56:33,050 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-22 01:56:33,050 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-22 01:56:33,050 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-22 01:56:33,051 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-22 01:56:33,051 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-22 01:56:33,051 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-22 01:56:33,051 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-22 01:56:33,051 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-22 01:56:33,051 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-22 01:56:33,052 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-22 01:56:33,052 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-22 01:56:33,052 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-22 01:56:33,052 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-22 01:56:33,052 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-22 01:56:33,052 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-22 01:56:33,053 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-22 01:56:33,053 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-22 01:56:33,053 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-22 01:56:33,053 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-22 01:56:33,053 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-22 01:56:33,053 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-22 01:56:33,054 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-22 01:56:33,054 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-22 01:56:33,054 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 01:56:33,054 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-22 01:56:33,054 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-22 01:56:33,054 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-22 01:56:33,055 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-22 01:56:33,055 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-22 01:56:33,055 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-22 01:56:33,056 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-22 01:56:33,056 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-22 01:56:33,056 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-22 01:56:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-22 01:56:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-22 01:56:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-22 01:56:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-22 01:56:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-22 01:56:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-22 01:56:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-22 01:56:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-22 01:56:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-22 01:56:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-22 01:56:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-22 01:56:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-22 01:56:33,059 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-22 01:56:33,059 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-22 01:56:33,064 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-22 01:56:33,064 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-22 01:56:33,064 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-22 01:56:33,065 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-22 01:56:33,065 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-22 01:56:33,065 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-22 01:56:33,065 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-22 01:56:33,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-22 01:56:33,065 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-22 01:56:33,065 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-22 01:56:33,066 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-22 01:56:33,066 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-22 01:56:33,066 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-22 01:56:33,066 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-22 01:56:33,066 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-22 01:56:33,066 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-22 01:56:33,066 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-22 01:56:33,067 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-22 01:56:33,067 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-22 01:56:33,067 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-22 01:56:33,067 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-22 01:56:33,067 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-22 01:56:33,067 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-22 01:56:33,067 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-22 01:56:33,068 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-22 01:56:33,068 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-22 01:56:33,068 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-22 01:56:33,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 01:56:33,068 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2021-02-22 01:56:33,068 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2021-02-22 01:56:33,068 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-02-22 01:56:33,069 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-02-22 01:56:33,069 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:56:33,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:56:33,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:56:33,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-02-22 01:56:33,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:56:33,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-22 01:56:33,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-22 01:56:33,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:56:33,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:56:33,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:56:33,618 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:56:33,619 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-22 01:56:33,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:56:33 BoogieIcfgContainer [2021-02-22 01:56:33,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:56:33,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:56:33,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:56:33,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:56:33,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:56:32" (1/3) ... [2021-02-22 01:56:33,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@625fafeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:56:33, skipping insertion in model container [2021-02-22 01:56:33,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:32" (2/3) ... [2021-02-22 01:56:33,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@625fafeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:56:33, skipping insertion in model container [2021-02-22 01:56:33,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:56:33" (3/3) ... [2021-02-22 01:56:33,646 INFO L111 eAbstractionObserver]: Analyzing ICFG rule60_list2.c_1.i [2021-02-22 01:56:33,656 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:56:33,663 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:56:33,687 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:56:33,736 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:56:33,736 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:56:33,736 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:56:33,736 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:56:33,736 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:56:33,737 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:56:33,737 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:56:33,737 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:56:33,756 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2021-02-22 01:56:33,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-22 01:56:33,767 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:56:33,768 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] [2021-02-22 01:56:33,768 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:56:33,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:56:33,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1068471701, now seen corresponding path program 1 times [2021-02-22 01:56:33,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:56:33,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806840531] [2021-02-22 01:56:33,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:56:33,891 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:56:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:34,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:34,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:34,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:34,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:34,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:34,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:34,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:34,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:34,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:34,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:56:34,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:34,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:34,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:56:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:34,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:34,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:34,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:56:34,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806840531] [2021-02-22 01:56:34,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:56:34,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-22 01:56:34,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442207141] [2021-02-22 01:56:34,266 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-22 01:56:34,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:56:34,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-22 01:56:34,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-22 01:56:34,288 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 7 states. [2021-02-22 01:56:34,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:56:34,954 INFO L93 Difference]: Finished difference Result 134 states and 163 transitions. [2021-02-22 01:56:34,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-22 01:56:34,956 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2021-02-22 01:56:34,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:56:34,969 INFO L225 Difference]: With dead ends: 134 [2021-02-22 01:56:34,969 INFO L226 Difference]: Without dead ends: 72 [2021-02-22 01:56:34,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-02-22 01:56:34,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-02-22 01:56:35,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2021-02-22 01:56:35,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-02-22 01:56:35,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2021-02-22 01:56:35,040 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 26 [2021-02-22 01:56:35,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:56:35,041 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2021-02-22 01:56:35,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-22 01:56:35,041 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2021-02-22 01:56:35,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-02-22 01:56:35,045 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:56:35,045 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] [2021-02-22 01:56:35,045 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:56:35,046 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:56:35,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:56:35,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1890572304, now seen corresponding path program 1 times [2021-02-22 01:56:35,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:56:35,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694560133] [2021-02-22 01:56:35,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:56:35,053 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:56:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:35,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:35,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:35,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:35,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:56:35,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:35,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:56:35,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:35,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:35,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:56:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:35,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:35,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:35,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-22 01:56:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:35,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:35,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:35,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:35,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-22 01:56:35,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:35,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-22 01:56:35,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-22 01:56:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:35,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:35,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:35,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:35,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-22 01:56:35,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-22 01:56:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:35,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:35,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:35,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-22 01:56:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:35,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:35,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:35,495 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-02-22 01:56:35,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694560133] [2021-02-22 01:56:35,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:56:35,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-22 01:56:35,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561106723] [2021-02-22 01:56:35,504 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-22 01:56:35,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:56:35,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-22 01:56:35,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-22 01:56:35,507 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand 9 states. [2021-02-22 01:56:35,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:56:35,838 INFO L93 Difference]: Finished difference Result 107 states and 122 transitions. [2021-02-22 01:56:35,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-22 01:56:35,839 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2021-02-22 01:56:35,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:56:35,842 INFO L225 Difference]: With dead ends: 107 [2021-02-22 01:56:35,842 INFO L226 Difference]: Without dead ends: 78 [2021-02-22 01:56:35,844 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 [2021-02-22 01:56:35,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-02-22 01:56:35,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2021-02-22 01:56:35,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-02-22 01:56:35,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2021-02-22 01:56:35,866 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 66 [2021-02-22 01:56:35,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:56:35,866 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2021-02-22 01:56:35,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-22 01:56:35,867 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2021-02-22 01:56:35,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-02-22 01:56:35,869 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:56:35,869 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] [2021-02-22 01:56:35,869 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:56:35,870 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:56:35,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:56:35,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1258103149, now seen corresponding path program 1 times [2021-02-22 01:56:35,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:56:35,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960845631] [2021-02-22 01:56:35,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:56:35,876 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:56:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:35,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:35,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:35,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:35,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:56:35,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:35,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:56:35,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:35,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:35,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:56:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:35,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:35,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:35,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-22 01:56:35,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:35,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:35,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:35,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-22 01:56:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:36,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:36,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:36,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-22 01:56:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:36,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:36,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:36,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:36,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-22 01:56:36,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:36,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-22 01:56:36,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-22 01:56:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:36,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:36,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:36,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:36,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-22 01:56:36,106 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-02-22 01:56:36,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960845631] [2021-02-22 01:56:36,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:56:36,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-22 01:56:36,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120733943] [2021-02-22 01:56:36,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-22 01:56:36,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:56:36,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-22 01:56:36,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-22 01:56:36,110 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand 9 states. [2021-02-22 01:56:36,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:56:36,383 INFO L93 Difference]: Finished difference Result 104 states and 116 transitions. [2021-02-22 01:56:36,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-22 01:56:36,383 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2021-02-22 01:56:36,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:56:36,385 INFO L225 Difference]: With dead ends: 104 [2021-02-22 01:56:36,386 INFO L226 Difference]: Without dead ends: 70 [2021-02-22 01:56:36,387 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 [2021-02-22 01:56:36,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-02-22 01:56:36,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2021-02-22 01:56:36,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-02-22 01:56:36,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2021-02-22 01:56:36,403 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 66 [2021-02-22 01:56:36,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:56:36,404 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2021-02-22 01:56:36,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-22 01:56:36,404 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2021-02-22 01:56:36,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-02-22 01:56:36,405 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:56:36,405 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] [2021-02-22 01:56:36,406 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 01:56:36,406 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:56:36,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:56:36,406 INFO L82 PathProgramCache]: Analyzing trace with hash 795212650, now seen corresponding path program 1 times [2021-02-22 01:56:36,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:56:36,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984390066] [2021-02-22 01:56:36,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:56:36,412 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:56:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:36,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:36,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:56:36,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:36,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:56:36,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:36,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:56:36,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:36,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:56:36,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:36,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:56:36,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:36,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:56:36,509 WARN L141 QuantifierPusher]: treesize reduction 13, result has 38.1 percent of original size [2021-02-22 01:56:36,510 WARN L147 QuantifierPusher]: treesize reduction 13, result has 38.1 percent of original size 8 [2021-02-22 01:56:36,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:36,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:36,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:56:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:36,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:36,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:36,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:36,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:36,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:36,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:56:36,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-22 01:56:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:36,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:36,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:36,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:36,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:56:36,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-22 01:56:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:36,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:36,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:36,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:36,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:36,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:36,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:56:36,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-22 01:56:36,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:36,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:36,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:36,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:36,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:56:36,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:36,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:56:36,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-22 01:56:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:36,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:36,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:36,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:36,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:36,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:36,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:56:36,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:36,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:56:36,786 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-02-22 01:56:36,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984390066] [2021-02-22 01:56:36,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:56:36,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-22 01:56:36,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152459620] [2021-02-22 01:56:36,788 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-22 01:56:36,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:56:36,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-22 01:56:36,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-02-22 01:56:36,790 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand 17 states. [2021-02-22 01:56:38,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:56:38,246 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2021-02-22 01:56:38,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-22 01:56:38,246 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 66 [2021-02-22 01:56:38,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:56:38,255 INFO L225 Difference]: With dead ends: 113 [2021-02-22 01:56:38,255 INFO L226 Difference]: Without dead ends: 110 [2021-02-22 01:56:38,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2021-02-22 01:56:38,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-02-22 01:56:38,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 93. [2021-02-22 01:56:38,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2021-02-22 01:56:38,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 106 transitions. [2021-02-22 01:56:38,310 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 106 transitions. Word has length 66 [2021-02-22 01:56:38,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:56:38,313 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 106 transitions. [2021-02-22 01:56:38,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-22 01:56:38,313 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 106 transitions. [2021-02-22 01:56:38,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-02-22 01:56:38,322 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:56:38,322 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] [2021-02-22 01:56:38,322 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 01:56:38,323 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:56:38,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:56:38,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1437147983, now seen corresponding path program 1 times [2021-02-22 01:56:38,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:56:38,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130113415] [2021-02-22 01:56:38,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:56:38,334 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:56:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:38,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:38,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:56:38,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:38,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:56:38,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:38,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:56:38,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:38,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:56:38,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:38,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:56:38,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:38,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:56:38,470 WARN L141 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size [2021-02-22 01:56:38,472 WARN L147 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size 12 [2021-02-22 01:56:38,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:38,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:38,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:56:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:38,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:38,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:38,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:38,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:38,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:38,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:56:38,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-22 01:56:38,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:38,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:38,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:38,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:38,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:56:38,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:38,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:56:38,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-22 01:56:38,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:38,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:38,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:38,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:38,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:38,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:38,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:56:38,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:38,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:56:38,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-22 01:56:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:38,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:38,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:38,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-22 01:56:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:38,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:38,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:38,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-22 01:56:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:38,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:38,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:38,764 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-22 01:56:38,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130113415] [2021-02-22 01:56:38,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:56:38,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-02-22 01:56:38,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857054430] [2021-02-22 01:56:38,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-22 01:56:38,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:56:38,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-22 01:56:38,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-02-22 01:56:38,767 INFO L87 Difference]: Start difference. First operand 93 states and 106 transitions. Second operand 18 states. [2021-02-22 01:56:40,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:56:40,080 INFO L93 Difference]: Finished difference Result 118 states and 134 transitions. [2021-02-22 01:56:40,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-22 01:56:40,081 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 75 [2021-02-22 01:56:40,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:56:40,082 INFO L225 Difference]: With dead ends: 118 [2021-02-22 01:56:40,083 INFO L226 Difference]: Without dead ends: 109 [2021-02-22 01:56:40,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2021-02-22 01:56:40,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-02-22 01:56:40,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 99. [2021-02-22 01:56:40,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2021-02-22 01:56:40,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 112 transitions. [2021-02-22 01:56:40,112 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 112 transitions. Word has length 75 [2021-02-22 01:56:40,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:56:40,112 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 112 transitions. [2021-02-22 01:56:40,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-22 01:56:40,113 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 112 transitions. [2021-02-22 01:56:40,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-02-22 01:56:40,114 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:56:40,114 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] [2021-02-22 01:56:40,114 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 01:56:40,114 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:56:40,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:56:40,115 INFO L82 PathProgramCache]: Analyzing trace with hash -2120960867, now seen corresponding path program 1 times [2021-02-22 01:56:40,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:56:40,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16674446] [2021-02-22 01:56:40,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:56:40,119 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:56:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:40,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:40,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:40,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:40,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:40,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:40,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:40,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:40,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:56:40,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:40,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:56:40,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:40,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:56:40,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:40,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:56:40,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:40,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:56:40,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:40,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:40,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:56:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:40,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:40,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:40,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-22 01:56:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:40,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:40,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:40,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:40,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:40,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:40,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:40,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-22 01:56:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:40,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:40,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:40,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:40,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:40,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-22 01:56:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:40,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:40,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:40,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:40,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:56:40,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:40,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:56:40,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-22 01:56:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:40,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:40,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:40,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:40,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:40,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:40,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:56:40,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:40,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:56:40,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-22 01:56:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:40,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:40,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:40,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:40,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:40,606 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-22 01:56:40,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16674446] [2021-02-22 01:56:40,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:56:40,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-02-22 01:56:40,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418935419] [2021-02-22 01:56:40,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-22 01:56:40,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:56:40,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-22 01:56:40,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2021-02-22 01:56:40,609 INFO L87 Difference]: Start difference. First operand 99 states and 112 transitions. Second operand 23 states. [2021-02-22 01:56:42,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:56:42,347 INFO L93 Difference]: Finished difference Result 117 states and 134 transitions. [2021-02-22 01:56:42,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-22 01:56:42,348 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 76 [2021-02-22 01:56:42,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:56:42,353 INFO L225 Difference]: With dead ends: 117 [2021-02-22 01:56:42,353 INFO L226 Difference]: Without dead ends: 110 [2021-02-22 01:56:42,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=210, Invalid=1682, Unknown=0, NotChecked=0, Total=1892 [2021-02-22 01:56:42,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-02-22 01:56:42,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2021-02-22 01:56:42,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2021-02-22 01:56:42,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 119 transitions. [2021-02-22 01:56:42,404 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 119 transitions. Word has length 76 [2021-02-22 01:56:42,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:56:42,406 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 119 transitions. [2021-02-22 01:56:42,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-02-22 01:56:42,406 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 119 transitions. [2021-02-22 01:56:42,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-02-22 01:56:42,409 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:56:42,409 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] [2021-02-22 01:56:42,410 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-22 01:56:42,410 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:56:42,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:56:42,410 INFO L82 PathProgramCache]: Analyzing trace with hash 16866635, now seen corresponding path program 1 times [2021-02-22 01:56:42,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:56:42,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701844584] [2021-02-22 01:56:42,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:56:42,416 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:56:42,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:42,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:42,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:42,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:42,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:42,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:42,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:56:42,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:42,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:56:42,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:42,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:56:42,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:42,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-22 01:56:42,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:42,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-22 01:56:42,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:42,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:56:42,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:42,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:56:42,594 WARN L141 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-02-22 01:56:42,597 WARN L147 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size 21 [2021-02-22 01:56:42,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:42,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:42,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:56:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:42,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:42,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:42,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:42,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:42,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-22 01:56:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:42,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:42,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:42,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:42,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:56:42,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-22 01:56:42,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:42,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:42,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:42,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:42,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:42,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:42,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:56:42,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-22 01:56:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:42,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:42,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:42,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:42,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:56:42,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:42,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:56:42,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-22 01:56:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:42,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:42,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:42,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:42,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:42,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:42,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:56:42,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:42,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:56:42,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-22 01:56:42,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:42,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:42,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:42,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:42,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:42,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-02-22 01:56:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:42,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:42,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:42,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-22 01:56:42,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:42,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:42,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-22 01:56:43,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:43,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-22 01:56:43,053 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-02-22 01:56:43,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701844584] [2021-02-22 01:56:43,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:56:43,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-02-22 01:56:43,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200535347] [2021-02-22 01:56:43,054 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-22 01:56:43,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:56:43,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-22 01:56:43,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2021-02-22 01:56:43,056 INFO L87 Difference]: Start difference. First operand 108 states and 119 transitions. Second operand 24 states. [2021-02-22 01:56:45,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:56:45,388 INFO L93 Difference]: Finished difference Result 140 states and 149 transitions. [2021-02-22 01:56:45,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-02-22 01:56:45,389 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 90 [2021-02-22 01:56:45,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:56:45,391 INFO L225 Difference]: With dead ends: 140 [2021-02-22 01:56:45,391 INFO L226 Difference]: Without dead ends: 124 [2021-02-22 01:56:45,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=319, Invalid=2543, Unknown=0, NotChecked=0, Total=2862 [2021-02-22 01:56:45,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-02-22 01:56:45,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-02-22 01:56:45,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2021-02-22 01:56:45,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 133 transitions. [2021-02-22 01:56:45,422 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 133 transitions. Word has length 90 [2021-02-22 01:56:45,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:56:45,423 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 133 transitions. [2021-02-22 01:56:45,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-02-22 01:56:45,423 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 133 transitions. [2021-02-22 01:56:45,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-02-22 01:56:45,424 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:56:45,424 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] [2021-02-22 01:56:45,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-22 01:56:45,425 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:56:45,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:56:45,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1329248837, now seen corresponding path program 2 times [2021-02-22 01:56:45,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:56:45,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186858299] [2021-02-22 01:56:45,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:56:45,430 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:56:45,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:45,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:45,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:45,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:45,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:45,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:45,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:45,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:45,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:56:45,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:45,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:56:45,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:45,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:56:45,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:45,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:56:45,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:45,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:56:45,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:45,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:56:45,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:45,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:45,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:56:45,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:45,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:45,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:45,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-22 01:56:45,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:45,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:45,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:45,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:45,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:45,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:45,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:45,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-22 01:56:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:45,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:45,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:45,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:45,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:45,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-22 01:56:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:45,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:45,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:45,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:45,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:56:45,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:45,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:56:45,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-22 01:56:45,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:45,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:45,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:45,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:45,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:45,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:45,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:56:45,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:45,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:56:45,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-22 01:56:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:45,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:45,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:45,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-02-22 01:56:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:45,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:45,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:45,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:45,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:45,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-22 01:56:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:45,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:45,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:56:45,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186858299] [2021-02-22 01:56:45,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:56:45,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-02-22 01:56:45,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40938726] [2021-02-22 01:56:45,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-22 01:56:45,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:56:45,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-22 01:56:45,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2021-02-22 01:56:45,950 INFO L87 Difference]: Start difference. First operand 124 states and 133 transitions. Second operand 24 states. [2021-02-22 01:56:47,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:56:47,800 INFO L93 Difference]: Finished difference Result 139 states and 149 transitions. [2021-02-22 01:56:47,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-22 01:56:47,802 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 90 [2021-02-22 01:56:47,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:56:47,803 INFO L225 Difference]: With dead ends: 139 [2021-02-22 01:56:47,803 INFO L226 Difference]: Without dead ends: 134 [2021-02-22 01:56:47,804 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 [2021-02-22 01:56:47,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-02-22 01:56:47,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2021-02-22 01:56:47,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2021-02-22 01:56:47,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 142 transitions. [2021-02-22 01:56:47,832 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 142 transitions. Word has length 90 [2021-02-22 01:56:47,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:56:47,833 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 142 transitions. [2021-02-22 01:56:47,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-02-22 01:56:47,833 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 142 transitions. [2021-02-22 01:56:47,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-02-22 01:56:47,834 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:56:47,834 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] [2021-02-22 01:56:47,834 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-22 01:56:47,835 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:56:47,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:56:47,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1789333268, now seen corresponding path program 1 times [2021-02-22 01:56:47,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:56:47,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060990056] [2021-02-22 01:56:47,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:56:47,839 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:56:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:47,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:47,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:47,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:47,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:47,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:47,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:47,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:47,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:47,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:47,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:47,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:47,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:56:47,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:47,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:56:47,930 WARN L141 QuantifierPusher]: treesize reduction 13, result has 38.1 percent of original size [2021-02-22 01:56:47,931 WARN L147 QuantifierPusher]: treesize reduction 13, result has 38.1 percent of original size 8 [2021-02-22 01:56:47,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:47,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:47,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:56:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:47,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:47,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:47,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:47,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:48,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-22 01:56:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:48,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:48,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:48,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:48,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:56:48,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-22 01:56:48,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:48,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:48,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:48,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:48,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:48,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:48,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:56:48,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-22 01:56:48,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:48,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:48,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:48,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:48,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:56:48,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:48,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:56:48,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-22 01:56:48,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:48,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:48,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:48,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:48,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:48,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:48,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:56:48,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:48,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:56:48,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-22 01:56:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:48,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:48,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:48,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-02-22 01:56:48,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:48,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:48,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:48,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-22 01:56:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:48,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:48,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:48,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:48,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:48,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:56:48,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060990056] [2021-02-22 01:56:48,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:56:48,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-02-22 01:56:48,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762049796] [2021-02-22 01:56:48,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-22 01:56:48,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:56:48,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-22 01:56:48,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-02-22 01:56:48,207 INFO L87 Difference]: Start difference. First operand 133 states and 142 transitions. Second operand 19 states. [2021-02-22 01:56:49,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:56:49,881 INFO L93 Difference]: Finished difference Result 160 states and 169 transitions. [2021-02-22 01:56:49,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-22 01:56:49,882 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 91 [2021-02-22 01:56:49,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:56:49,884 INFO L225 Difference]: With dead ends: 160 [2021-02-22 01:56:49,884 INFO L226 Difference]: Without dead ends: 147 [2021-02-22 01:56:49,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=253, Invalid=1469, Unknown=0, NotChecked=0, Total=1722 [2021-02-22 01:56:49,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-02-22 01:56:49,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 132. [2021-02-22 01:56:49,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2021-02-22 01:56:49,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 140 transitions. [2021-02-22 01:56:49,914 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 140 transitions. Word has length 91 [2021-02-22 01:56:49,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:56:49,915 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 140 transitions. [2021-02-22 01:56:49,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-22 01:56:49,915 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 140 transitions. [2021-02-22 01:56:49,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-02-22 01:56:49,916 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:56:49,917 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] [2021-02-22 01:56:49,917 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-22 01:56:49,917 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:56:49,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:56:49,917 INFO L82 PathProgramCache]: Analyzing trace with hash -2000657900, now seen corresponding path program 1 times [2021-02-22 01:56:49,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:56:49,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850138218] [2021-02-22 01:56:49,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:56:49,924 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:56:49,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:56:49,952 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:56:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:56:49,975 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:56:50,045 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:56:50,046 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:56:50,047 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-22 01:56:50,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:56:50 BoogieIcfgContainer [2021-02-22 01:56:50,075 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:56:50,077 INFO L168 Benchmark]: Toolchain (without parser) took 17732.23 ms. Allocated memory was 166.7 MB in the beginning and 393.2 MB in the end (delta: 226.5 MB). Free memory was 141.3 MB in the beginning and 143.4 MB in the end (delta: -2.1 MB). Peak memory consumption was 225.3 MB. Max. memory is 8.0 GB. [2021-02-22 01:56:50,078 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 166.7 MB. Free memory is still 141.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:56:50,087 INFO L168 Benchmark]: CACSL2BoogieTranslator took 510.27 ms. Allocated memory is still 166.7 MB. Free memory was 140.3 MB in the beginning and 118.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:56:50,087 INFO L168 Benchmark]: Boogie Preprocessor took 73.17 ms. Allocated memory is still 166.7 MB. Free memory was 118.3 MB in the beginning and 148.4 MB in the end (delta: -30.1 MB). Peak memory consumption was 5.9 MB. Max. memory is 8.0 GB. [2021-02-22 01:56:50,087 INFO L168 Benchmark]: RCFGBuilder took 685.48 ms. Allocated memory is still 166.7 MB. Free memory was 147.9 MB in the beginning and 103.3 MB in the end (delta: 44.6 MB). Peak memory consumption was 45.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:56:50,087 INFO L168 Benchmark]: TraceAbstraction took 16444.89 ms. Allocated memory was 166.7 MB in the beginning and 393.2 MB in the end (delta: 226.5 MB). Free memory was 102.8 MB in the beginning and 143.4 MB in the end (delta: -40.6 MB). Peak memory consumption was 185.9 MB. Max. memory is 8.0 GB. [2021-02-22 01:56:50,090 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 166.7 MB. Free memory is still 141.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 510.27 ms. Allocated memory is still 166.7 MB. Free memory was 140.3 MB in the beginning and 118.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 73.17 ms. Allocated memory is still 166.7 MB. Free memory was 118.3 MB in the beginning and 148.4 MB in the end (delta: -30.1 MB). Peak memory consumption was 5.9 MB. Max. memory is 8.0 GB. * RCFGBuilder took 685.48 ms. Allocated memory is still 166.7 MB. Free memory was 147.9 MB in the beginning and 103.3 MB in the end (delta: 44.6 MB). Peak memory consumption was 45.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 16444.89 ms. Allocated memory was 166.7 MB in the beginning and 393.2 MB in the end (delta: 226.5 MB). Free memory was 102.8 MB in the beginning and 143.4 MB in the end (delta: -40.6 MB). Peak memory consumption was 185.9 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: 16.3s, OverallIterations: 10, TraceHistogramMax: 4, AutomataDifference: 11.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 578 SDtfs, 1038 SDslu, 2513 SDs, 0 SdLazy, 6502 SolverSat, 517 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 378 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1482 ImplicationChecksByTransitivity, 7.2s 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...