/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:38:15,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:38:15,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:38:15,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:38:15,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:38:15,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:38:15,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:38:15,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:38:15,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:38:15,178 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:38:15,179 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:38:15,181 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:38:15,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:38:15,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:38:15,185 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:38:15,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:38:15,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:38:15,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:38:15,208 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:38:15,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:38:15,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:38:15,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:38:15,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:38:15,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:38:15,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 20:38:15,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 20:38:15,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 20:38:15,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 20:38:15,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 20:38:15,228 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 20:38:15,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 20:38:15,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 20:38:15,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 20:38:15,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 20:38:15,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 20:38:15,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 20:38:15,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 20:38:15,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 20:38:15,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:38:15,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:38:15,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:38:15,240 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 20:38:15,254 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:38:15,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:38:15,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:38:15,258 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:38:15,258 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:38:15,260 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:38:15,260 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:38:15,260 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:38:15,260 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:38:15,261 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:38:15,262 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:38:15,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:38:15,263 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:38:15,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:38:15,263 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:38:15,263 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:38:15,263 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:38:15,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:38:15,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:38:15,264 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:38:15,264 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:38:15,264 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:38:15,265 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:38:15,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:38:15,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:38:15,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:38:15,792 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:38:15,793 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:38:15,794 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2021-02-21 20:38:15,904 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fdc8a1c3/966f3cb186034041b66c4d23c91b3292/FLAGb5cd91e27 [2021-02-21 20:38:16,816 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:38:16,817 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2021-02-21 20:38:16,833 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fdc8a1c3/966f3cb186034041b66c4d23c91b3292/FLAGb5cd91e27 [2021-02-21 20:38:17,128 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fdc8a1c3/966f3cb186034041b66c4d23c91b3292 [2021-02-21 20:38:17,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:38:17,154 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:38:17,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:38:17,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:38:17,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:38:17,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:38:17" (1/1) ... [2021-02-21 20:38:17,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56669f41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:38:17, skipping insertion in model container [2021-02-21 20:38:17,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:38:17" (1/1) ... [2021-02-21 20:38:17,182 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:38:17,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:38:17,447 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] [2021-02-21 20:38:17,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:38:17,665 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:38:17,685 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] [2021-02-21 20:38:17,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:38:17,886 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:38:17,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:38:17 WrapperNode [2021-02-21 20:38:17,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:38:17,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:38:17,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:38:17,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:38:17,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:38:17" (1/1) ... [2021-02-21 20:38:17,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:38:17" (1/1) ... [2021-02-21 20:38:17,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:38:17" (1/1) ... [2021-02-21 20:38:17,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:38:17" (1/1) ... [2021-02-21 20:38:17,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:38:17" (1/1) ... [2021-02-21 20:38:18,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:38:17" (1/1) ... [2021-02-21 20:38:18,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:38:17" (1/1) ... [2021-02-21 20:38:18,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:38:18,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:38:18,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:38:18,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:38:18,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:38:17" (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 [2021-02-21 20:38:18,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:38:18,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:38:18,210 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:38:18,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2021-02-21 20:38:18,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-21 20:38:18,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-21 20:38:18,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-02-21 20:38:18,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-02-21 20:38:18,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-02-21 20:38:18,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2021-02-21 20:38:18,213 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2021-02-21 20:38:18,213 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-02-21 20:38:18,214 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-02-21 20:38:18,214 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:38:18,215 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:38:18,215 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:38:18,216 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:38:18,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:38:18,217 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2021-02-21 20:38:18,217 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-21 20:38:18,220 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-21 20:38:18,220 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-21 20:38:18,221 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-21 20:38:18,221 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-21 20:38:18,222 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-21 20:38:18,222 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-21 20:38:18,222 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-21 20:38:18,222 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-21 20:38:18,223 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-21 20:38:18,223 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-21 20:38:18,223 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-21 20:38:18,223 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-21 20:38:18,223 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-21 20:38:18,223 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-21 20:38:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-21 20:38:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-21 20:38:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-21 20:38:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-02-21 20:38:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-02-21 20:38:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-02-21 20:38:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-21 20:38:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-21 20:38:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-21 20:38:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-21 20:38:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-21 20:38:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-21 20:38:18,226 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-21 20:38:18,226 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-21 20:38:18,226 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-21 20:38:18,226 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-21 20:38:18,226 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-21 20:38:18,226 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-21 20:38:18,227 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-21 20:38:18,227 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-21 20:38:18,227 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-21 20:38:18,227 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-21 20:38:18,227 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-21 20:38:18,227 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-21 20:38:18,228 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-21 20:38:18,228 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-21 20:38:18,228 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-21 20:38:18,228 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-21 20:38:18,229 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-21 20:38:18,230 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-21 20:38:18,230 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-21 20:38:18,230 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-21 20:38:18,230 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-21 20:38:18,230 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-21 20:38:18,230 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-21 20:38:18,231 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-21 20:38:18,231 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-21 20:38:18,231 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-21 20:38:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-21 20:38:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-21 20:38:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 20:38:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-21 20:38:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-21 20:38:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 20:38:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-21 20:38:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-21 20:38:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-21 20:38:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-21 20:38:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-21 20:38:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-21 20:38:18,236 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-21 20:38:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-21 20:38:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-21 20:38:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-21 20:38:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-21 20:38:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-21 20:38:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-21 20:38:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-21 20:38:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-21 20:38:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-21 20:38:18,242 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-21 20:38:18,242 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-21 20:38:18,243 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-21 20:38:18,243 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-21 20:38:18,243 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-21 20:38:18,243 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-21 20:38:18,243 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-21 20:38:18,243 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-21 20:38:18,244 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-21 20:38:18,244 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-21 20:38:18,244 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-21 20:38:18,244 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-21 20:38:18,244 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-21 20:38:18,244 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-21 20:38:18,245 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-21 20:38:18,245 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-21 20:38:18,245 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-21 20:38:18,245 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-21 20:38:18,245 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-21 20:38:18,246 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-21 20:38:18,246 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-21 20:38:18,246 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-21 20:38:18,246 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-21 20:38:18,246 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-21 20:38:18,246 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-21 20:38:18,247 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-21 20:38:18,247 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-21 20:38:18,247 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-21 20:38:18,247 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-21 20:38:18,248 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-21 20:38:18,248 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-21 20:38:18,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 20:38:18,249 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2021-02-21 20:38:18,249 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2021-02-21 20:38:18,249 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-02-21 20:38:18,249 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-02-21 20:38:18,249 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:38:18,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:38:18,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:38:18,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-02-21 20:38:18,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:38:18,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:38:18,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:38:18,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 20:38:18,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 20:38:18,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:38:19,025 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:38:19,026 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-21 20:38:19,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:38:19 BoogieIcfgContainer [2021-02-21 20:38:19,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:38:19,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:38:19,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:38:19,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:38:19,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:38:17" (1/3) ... [2021-02-21 20:38:19,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dfa0921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:38:19, skipping insertion in model container [2021-02-21 20:38:19,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:38:17" (2/3) ... [2021-02-21 20:38:19,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dfa0921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:38:19, skipping insertion in model container [2021-02-21 20:38:19,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:38:19" (3/3) ... [2021-02-21 20:38:19,052 INFO L111 eAbstractionObserver]: Analyzing ICFG rule60_list2.c_1.i [2021-02-21 20:38:19,061 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:38:19,067 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:38:19,091 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:38:19,130 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:38:19,131 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:38:19,132 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:38:19,132 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:38:19,132 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:38:19,132 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:38:19,132 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:38:19,133 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:38:19,153 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2021-02-21 20:38:19,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-21 20:38:19,165 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:38:19,167 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] [2021-02-21 20:38:19,167 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:38:19,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:38:19,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1068471701, now seen corresponding path program 1 times [2021-02-21 20:38:19,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:38:19,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434063402] [2021-02-21 20:38:19,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:38:19,288 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:38:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:19,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:19,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:19,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:19,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:19,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:19,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:19,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:19,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:19,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:19,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:19,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:19,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:19,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:38:19,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:19,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:19,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:19,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:38:19,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434063402] [2021-02-21 20:38:19,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:38:19,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 20:38:19,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645620477] [2021-02-21 20:38:19,814 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 20:38:19,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:38:19,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 20:38:19,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-21 20:38:19,855 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 7 states. [2021-02-21 20:38:20,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:38:20,532 INFO L93 Difference]: Finished difference Result 134 states and 163 transitions. [2021-02-21 20:38:20,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 20:38:20,535 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2021-02-21 20:38:20,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:38:20,549 INFO L225 Difference]: With dead ends: 134 [2021-02-21 20:38:20,549 INFO L226 Difference]: Without dead ends: 72 [2021-02-21 20:38:20,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-02-21 20:38:20,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-02-21 20:38:20,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2021-02-21 20:38:20,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-02-21 20:38:20,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2021-02-21 20:38:20,628 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 26 [2021-02-21 20:38:20,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:38:20,628 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2021-02-21 20:38:20,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 20:38:20,629 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2021-02-21 20:38:20,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-02-21 20:38:20,632 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:38:20,632 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] [2021-02-21 20:38:20,633 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:38:20,633 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:38:20,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:38:20,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1890572304, now seen corresponding path program 1 times [2021-02-21 20:38:20,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:38:20,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956822380] [2021-02-21 20:38:20,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:38:20,641 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:38:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:20,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:20,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:20,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:20,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:38:20,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:20,819 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:38:20,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:20,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:20,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:38:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:20,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:20,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:20,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-21 20:38:20,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:20,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:20,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:20,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:20,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 20:38:20,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:20,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 20:38:20,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 20:38:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:20,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:20,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:20,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:20,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 20:38:21,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-21 20:38:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:21,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:21,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:21,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 20:38:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:21,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:21,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:21,049 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-02-21 20:38:21,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956822380] [2021-02-21 20:38:21,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:38:21,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 20:38:21,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284663387] [2021-02-21 20:38:21,052 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 20:38:21,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:38:21,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 20:38:21,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 20:38:21,054 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand 9 states. [2021-02-21 20:38:21,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:38:21,420 INFO L93 Difference]: Finished difference Result 107 states and 122 transitions. [2021-02-21 20:38:21,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 20:38:21,421 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2021-02-21 20:38:21,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:38:21,424 INFO L225 Difference]: With dead ends: 107 [2021-02-21 20:38:21,424 INFO L226 Difference]: Without dead ends: 78 [2021-02-21 20:38:21,426 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 [2021-02-21 20:38:21,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-02-21 20:38:21,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2021-02-21 20:38:21,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-02-21 20:38:21,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2021-02-21 20:38:21,450 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 66 [2021-02-21 20:38:21,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:38:21,450 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2021-02-21 20:38:21,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 20:38:21,451 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2021-02-21 20:38:21,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-02-21 20:38:21,453 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:38:21,453 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] [2021-02-21 20:38:21,454 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:38:21,454 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:38:21,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:38:21,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1258103149, now seen corresponding path program 1 times [2021-02-21 20:38:21,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:38:21,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152116119] [2021-02-21 20:38:21,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:38:21,462 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:38:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:21,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:21,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:21,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:21,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:38:21,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:21,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:38:21,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:21,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:21,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:38:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:21,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:21,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:21,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-21 20:38:21,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:21,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:21,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:21,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 20:38:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:21,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:21,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:21,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-21 20:38:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:21,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:21,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:21,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:21,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 20:38:21,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:21,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 20:38:21,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 20:38:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:21,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:21,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:21,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:21,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 20:38:21,845 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-02-21 20:38:21,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [152116119] [2021-02-21 20:38:21,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:38:21,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 20:38:21,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784909246] [2021-02-21 20:38:21,847 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 20:38:21,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:38:21,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 20:38:21,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 20:38:21,849 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand 9 states. [2021-02-21 20:38:22,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:38:22,188 INFO L93 Difference]: Finished difference Result 104 states and 116 transitions. [2021-02-21 20:38:22,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 20:38:22,189 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2021-02-21 20:38:22,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:38:22,192 INFO L225 Difference]: With dead ends: 104 [2021-02-21 20:38:22,192 INFO L226 Difference]: Without dead ends: 70 [2021-02-21 20:38:22,193 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 [2021-02-21 20:38:22,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-02-21 20:38:22,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2021-02-21 20:38:22,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-02-21 20:38:22,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2021-02-21 20:38:22,212 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 66 [2021-02-21 20:38:22,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:38:22,212 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2021-02-21 20:38:22,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 20:38:22,213 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2021-02-21 20:38:22,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-02-21 20:38:22,215 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:38:22,215 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] [2021-02-21 20:38:22,215 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 20:38:22,215 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:38:22,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:38:22,216 INFO L82 PathProgramCache]: Analyzing trace with hash 795212650, now seen corresponding path program 1 times [2021-02-21 20:38:22,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:38:22,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412558088] [2021-02-21 20:38:22,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:38:22,222 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:38:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:22,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:22,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:38:22,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:22,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:38:22,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:22,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:38:22,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:22,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:38:22,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:22,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:38:22,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:22,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:38:22,368 WARN L141 QuantifierPusher]: treesize reduction 13, result has 38.1 percent of original size [2021-02-21 20:38:22,369 WARN L147 QuantifierPusher]: treesize reduction 13, result has 38.1 percent of original size 8 [2021-02-21 20:38:22,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:22,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:22,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:38:22,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:22,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:22,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:22,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:22,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:22,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:22,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:38:22,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-21 20:38:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:22,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:22,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:22,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:22,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:22,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 20:38:22,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:22,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:22,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:22,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:22,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:22,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:22,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:22,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-21 20:38:22,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:22,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:22,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:22,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:22,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:22,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:22,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:22,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 20:38:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:22,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:22,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:22,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:22,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:22,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:22,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:22,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:22,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:22,705 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-02-21 20:38:22,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412558088] [2021-02-21 20:38:22,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:38:22,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-21 20:38:22,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474583149] [2021-02-21 20:38:22,707 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-21 20:38:22,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:38:22,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-21 20:38:22,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-02-21 20:38:22,708 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand 17 states. [2021-02-21 20:38:24,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:38:24,160 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2021-02-21 20:38:24,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-21 20:38:24,161 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 66 [2021-02-21 20:38:24,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:38:24,164 INFO L225 Difference]: With dead ends: 113 [2021-02-21 20:38:24,164 INFO L226 Difference]: Without dead ends: 110 [2021-02-21 20:38:24,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2021-02-21 20:38:24,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-02-21 20:38:24,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 93. [2021-02-21 20:38:24,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2021-02-21 20:38:24,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 106 transitions. [2021-02-21 20:38:24,198 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 106 transitions. Word has length 66 [2021-02-21 20:38:24,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:38:24,199 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 106 transitions. [2021-02-21 20:38:24,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-21 20:38:24,199 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 106 transitions. [2021-02-21 20:38:24,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-02-21 20:38:24,201 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:38:24,201 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] [2021-02-21 20:38:24,202 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 20:38:24,202 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:38:24,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:38:24,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1437147983, now seen corresponding path program 1 times [2021-02-21 20:38:24,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:38:24,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970781380] [2021-02-21 20:38:24,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:38:24,208 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:38:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:24,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:24,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:38:24,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:24,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:38:24,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:24,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:38:24,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:24,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:38:24,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:24,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:38:24,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:24,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:38:24,305 WARN L141 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size [2021-02-21 20:38:24,311 WARN L147 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size 12 [2021-02-21 20:38:24,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:24,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:24,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:38:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:24,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:24,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:24,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:24,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:24,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:24,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:38:24,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-21 20:38:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:24,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:24,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:24,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:24,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:24,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:24,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:24,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 20:38:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:24,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:24,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:24,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:24,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:24,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:24,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:24,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:24,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:24,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-21 20:38:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:24,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:24,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:24,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 20:38:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:24,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:24,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:24,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-21 20:38:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:24,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:24,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:24,677 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-21 20:38:24,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970781380] [2021-02-21 20:38:24,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:38:24,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-02-21 20:38:24,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782174244] [2021-02-21 20:38:24,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-21 20:38:24,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:38:24,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-21 20:38:24,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-02-21 20:38:24,686 INFO L87 Difference]: Start difference. First operand 93 states and 106 transitions. Second operand 18 states. [2021-02-21 20:38:25,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:38:25,926 INFO L93 Difference]: Finished difference Result 118 states and 134 transitions. [2021-02-21 20:38:25,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-21 20:38:25,927 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 75 [2021-02-21 20:38:25,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:38:25,929 INFO L225 Difference]: With dead ends: 118 [2021-02-21 20:38:25,930 INFO L226 Difference]: Without dead ends: 109 [2021-02-21 20:38:25,931 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 [2021-02-21 20:38:25,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-02-21 20:38:25,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 99. [2021-02-21 20:38:25,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2021-02-21 20:38:25,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 112 transitions. [2021-02-21 20:38:25,962 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 112 transitions. Word has length 75 [2021-02-21 20:38:25,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:38:25,962 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 112 transitions. [2021-02-21 20:38:25,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-21 20:38:25,963 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 112 transitions. [2021-02-21 20:38:25,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-02-21 20:38:25,964 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:38:25,964 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] [2021-02-21 20:38:25,965 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 20:38:25,965 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:38:25,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:38:25,965 INFO L82 PathProgramCache]: Analyzing trace with hash -2120960867, now seen corresponding path program 1 times [2021-02-21 20:38:25,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:38:25,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743943656] [2021-02-21 20:38:25,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:38:25,970 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:38:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:26,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:26,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:26,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:26,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:26,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:26,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:26,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:26,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:26,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:26,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:26,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:26,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:26,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:26,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:26,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:26,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:38:26,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:26,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:26,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:38:26,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:26,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:26,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:26,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-21 20:38:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:26,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:26,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:26,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:26,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:26,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:26,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:26,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 20:38:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:26,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:26,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:26,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:26,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:26,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-21 20:38:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:26,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:26,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:26,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:26,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:26,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:26,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:26,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 20:38:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:26,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:26,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:26,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:26,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:26,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:26,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:26,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:26,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:26,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-21 20:38:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:26,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:26,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:26,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:26,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:26,472 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-21 20:38:26,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743943656] [2021-02-21 20:38:26,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:38:26,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-02-21 20:38:26,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780779716] [2021-02-21 20:38:26,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-21 20:38:26,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:38:26,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-21 20:38:26,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2021-02-21 20:38:26,476 INFO L87 Difference]: Start difference. First operand 99 states and 112 transitions. Second operand 23 states. [2021-02-21 20:38:28,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:38:28,408 INFO L93 Difference]: Finished difference Result 117 states and 134 transitions. [2021-02-21 20:38:28,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-21 20:38:28,409 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 76 [2021-02-21 20:38:28,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:38:28,414 INFO L225 Difference]: With dead ends: 117 [2021-02-21 20:38:28,415 INFO L226 Difference]: Without dead ends: 110 [2021-02-21 20:38:28,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=210, Invalid=1682, Unknown=0, NotChecked=0, Total=1892 [2021-02-21 20:38:28,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-02-21 20:38:28,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2021-02-21 20:38:28,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2021-02-21 20:38:28,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 119 transitions. [2021-02-21 20:38:28,460 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 119 transitions. Word has length 76 [2021-02-21 20:38:28,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:38:28,461 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 119 transitions. [2021-02-21 20:38:28,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-02-21 20:38:28,462 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 119 transitions. [2021-02-21 20:38:28,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-02-21 20:38:28,464 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:38:28,465 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] [2021-02-21 20:38:28,465 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 20:38:28,465 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:38:28,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:38:28,466 INFO L82 PathProgramCache]: Analyzing trace with hash 16866635, now seen corresponding path program 1 times [2021-02-21 20:38:28,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:38:28,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458049974] [2021-02-21 20:38:28,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:38:28,470 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:38:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:28,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:28,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:28,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:28,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:28,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:28,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:38:28,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:28,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:38:28,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:28,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:38:28,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:28,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 20:38:28,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:28,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 20:38:28,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:28,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:38:28,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:28,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:38:28,629 WARN L141 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-02-21 20:38:28,632 WARN L147 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size 21 [2021-02-21 20:38:28,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:28,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:28,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:38:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:28,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:28,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:28,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:28,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:28,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-21 20:38:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:28,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:28,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:28,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:28,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:38:28,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 20:38:28,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:28,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:28,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:28,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:28,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:28,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:28,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:38:28,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-21 20:38:28,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:28,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:28,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:28,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:28,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:38:28,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:28,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:38:28,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 20:38:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:28,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:28,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:28,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:28,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:28,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:28,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:38:28,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:28,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:38:28,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-21 20:38:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:28,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:28,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:28,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:28,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:29,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-02-21 20:38:29,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:29,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:29,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:29,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-21 20:38:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:29,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:29,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 20:38:29,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:29,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:38:29,149 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-02-21 20:38:29,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458049974] [2021-02-21 20:38:29,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:38:29,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-02-21 20:38:29,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085502335] [2021-02-21 20:38:29,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-21 20:38:29,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:38:29,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-21 20:38:29,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2021-02-21 20:38:29,152 INFO L87 Difference]: Start difference. First operand 108 states and 119 transitions. Second operand 24 states. [2021-02-21 20:38:31,342 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2021-02-21 20:38:31,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:38:31,716 INFO L93 Difference]: Finished difference Result 140 states and 149 transitions. [2021-02-21 20:38:31,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-02-21 20:38:31,717 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 90 [2021-02-21 20:38:31,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:38:31,720 INFO L225 Difference]: With dead ends: 140 [2021-02-21 20:38:31,721 INFO L226 Difference]: Without dead ends: 124 [2021-02-21 20:38:31,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=319, Invalid=2543, Unknown=0, NotChecked=0, Total=2862 [2021-02-21 20:38:31,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-02-21 20:38:31,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-02-21 20:38:31,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2021-02-21 20:38:31,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 133 transitions. [2021-02-21 20:38:31,767 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 133 transitions. Word has length 90 [2021-02-21 20:38:31,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:38:31,767 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 133 transitions. [2021-02-21 20:38:31,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-02-21 20:38:31,768 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 133 transitions. [2021-02-21 20:38:31,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-02-21 20:38:31,770 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:38:31,770 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] [2021-02-21 20:38:31,770 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 20:38:31,770 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:38:31,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:38:31,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1329248837, now seen corresponding path program 2 times [2021-02-21 20:38:31,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:38:31,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200045838] [2021-02-21 20:38:31,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:38:31,776 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:38:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:31,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:31,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:31,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:31,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:31,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:31,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:31,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:31,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:31,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:31,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:31,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:31,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:31,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:31,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:31,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:31,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:31,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:31,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:38:31,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:31,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:31,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:38:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:31,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:31,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:31,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-21 20:38:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:31,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:31,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:31,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:31,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:31,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:31,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:31,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 20:38:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:32,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:32,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:32,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:32,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:32,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-21 20:38:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:32,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:32,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:32,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:32,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:32,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:32,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:32,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 20:38:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:32,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:32,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:32,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:32,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:32,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:32,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:32,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:32,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:32,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-21 20:38:32,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:32,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:32,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:32,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-02-21 20:38:32,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:32,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:32,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:32,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:32,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:32,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-21 20:38:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:32,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:32,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:32,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:38:32,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200045838] [2021-02-21 20:38:32,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:38:32,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-02-21 20:38:32,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814773948] [2021-02-21 20:38:32,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-21 20:38:32,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:38:32,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-21 20:38:32,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2021-02-21 20:38:32,326 INFO L87 Difference]: Start difference. First operand 124 states and 133 transitions. Second operand 24 states. [2021-02-21 20:38:34,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:38:34,196 INFO L93 Difference]: Finished difference Result 139 states and 149 transitions. [2021-02-21 20:38:34,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-21 20:38:34,196 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 90 [2021-02-21 20:38:34,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:38:34,199 INFO L225 Difference]: With dead ends: 139 [2021-02-21 20:38:34,199 INFO L226 Difference]: Without dead ends: 134 [2021-02-21 20:38:34,201 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 [2021-02-21 20:38:34,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-02-21 20:38:34,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2021-02-21 20:38:34,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2021-02-21 20:38:34,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 142 transitions. [2021-02-21 20:38:34,235 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 142 transitions. Word has length 90 [2021-02-21 20:38:34,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:38:34,236 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 142 transitions. [2021-02-21 20:38:34,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-02-21 20:38:34,236 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 142 transitions. [2021-02-21 20:38:34,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-02-21 20:38:34,238 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:38:34,238 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] [2021-02-21 20:38:34,239 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 20:38:34,239 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:38:34,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:38:34,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1789333268, now seen corresponding path program 1 times [2021-02-21 20:38:34,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:38:34,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916807932] [2021-02-21 20:38:34,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:38:34,244 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:38:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:34,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:34,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:34,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:34,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:34,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:34,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:34,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:34,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:34,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:34,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:34,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:34,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:38:34,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:34,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:38:34,354 WARN L141 QuantifierPusher]: treesize reduction 13, result has 38.1 percent of original size [2021-02-21 20:38:34,355 WARN L147 QuantifierPusher]: treesize reduction 13, result has 38.1 percent of original size 8 [2021-02-21 20:38:34,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:34,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:34,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:38:34,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:34,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:34,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:34,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:34,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:34,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-21 20:38:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:34,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:34,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:34,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:34,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:34,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 20:38:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:34,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:34,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:34,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:34,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:34,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:34,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:34,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-21 20:38:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:34,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:34,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:34,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:34,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:34,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:34,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:34,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 20:38:34,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:34,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:34,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:34,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:34,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:34,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:34,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:34,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:34,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:34,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-21 20:38:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:34,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:34,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:34,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-02-21 20:38:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:34,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:34,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:34,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-21 20:38:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:34,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:34,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:34,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:34,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:34,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:38:34,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916807932] [2021-02-21 20:38:34,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:38:34,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-02-21 20:38:34,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385027278] [2021-02-21 20:38:34,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-21 20:38:34,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:38:34,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-21 20:38:34,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-02-21 20:38:34,740 INFO L87 Difference]: Start difference. First operand 133 states and 142 transitions. Second operand 19 states. [2021-02-21 20:38:36,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:38:36,316 INFO L93 Difference]: Finished difference Result 160 states and 169 transitions. [2021-02-21 20:38:36,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-21 20:38:36,317 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 91 [2021-02-21 20:38:36,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:38:36,318 INFO L225 Difference]: With dead ends: 160 [2021-02-21 20:38:36,319 INFO L226 Difference]: Without dead ends: 147 [2021-02-21 20:38:36,320 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 [2021-02-21 20:38:36,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-02-21 20:38:36,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 132. [2021-02-21 20:38:36,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2021-02-21 20:38:36,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 140 transitions. [2021-02-21 20:38:36,352 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 140 transitions. Word has length 91 [2021-02-21 20:38:36,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:38:36,353 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 140 transitions. [2021-02-21 20:38:36,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-21 20:38:36,353 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 140 transitions. [2021-02-21 20:38:36,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-02-21 20:38:36,354 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:38:36,355 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] [2021-02-21 20:38:36,355 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-21 20:38:36,355 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:38:36,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:38:36,356 INFO L82 PathProgramCache]: Analyzing trace with hash -2000657900, now seen corresponding path program 1 times [2021-02-21 20:38:36,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:38:36,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727620021] [2021-02-21 20:38:36,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:38:36,360 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:38:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:38:36,386 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:38:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:38:36,408 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:38:36,470 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 20:38:36,470 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 20:38:36,471 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-21 20:38:36,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:38:36 BoogieIcfgContainer [2021-02-21 20:38:36,499 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:38:36,500 INFO L168 Benchmark]: Toolchain (without parser) took 19362.80 ms. Allocated memory was 151.0 MB in the beginning and 331.4 MB in the end (delta: 180.4 MB). Free memory was 126.4 MB in the beginning and 146.7 MB in the end (delta: -20.4 MB). Peak memory consumption was 160.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:38:36,501 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:38:36,501 INFO L168 Benchmark]: CACSL2BoogieTranslator took 728.39 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 102.7 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:38:36,501 INFO L168 Benchmark]: Boogie Preprocessor took 136.66 ms. Allocated memory is still 151.0 MB. Free memory was 102.7 MB in the beginning and 100.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:38:36,502 INFO L168 Benchmark]: RCFGBuilder took 1002.75 ms. Allocated memory is still 151.0 MB. Free memory was 100.1 MB in the beginning and 89.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.4 MB. Max. memory is 8.0 GB. [2021-02-21 20:38:36,502 INFO L168 Benchmark]: TraceAbstraction took 17463.88 ms. Allocated memory was 151.0 MB in the beginning and 331.4 MB in the end (delta: 180.4 MB). Free memory was 89.3 MB in the beginning and 146.7 MB in the end (delta: -57.4 MB). Peak memory consumption was 122.4 MB. Max. memory is 8.0 GB. [2021-02-21 20:38:36,503 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 728.39 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 102.7 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 136.66 ms. Allocated memory is still 151.0 MB. Free memory was 102.7 MB in the beginning and 100.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1002.75 ms. Allocated memory is still 151.0 MB. Free memory was 100.1 MB in the beginning and 89.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 17463.88 ms. Allocated memory was 151.0 MB in the beginning and 331.4 MB in the end (delta: 180.4 MB). Free memory was 89.3 MB in the beginning and 146.7 MB in the end (delta: -57.4 MB). Peak memory consumption was 122.4 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: 17.3s, OverallIterations: 10, TraceHistogramMax: 4, AutomataDifference: 12.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 573 SDtfs, 1038 SDslu, 2486 SDs, 0 SdLazy, 6499 SolverSat, 517 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 378 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1482 ImplicationChecksByTransitivity, 7.7s 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: 0.3s 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...