/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -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-36cd7be [2021-02-23 23:04:44,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 23:04:44,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 23:04:44,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 23:04:44,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 23:04:44,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 23:04:44,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 23:04:44,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 23:04:44,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 23:04:44,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 23:04:44,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 23:04:44,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 23:04:44,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 23:04:44,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 23:04:44,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 23:04:44,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 23:04:44,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 23:04:44,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 23:04:44,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 23:04:44,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 23:04:44,581 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 23:04:44,602 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 23:04:44,602 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 23:04:44,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 23:04:44,603 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 23:04:44,604 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 23:04:44,604 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 23:04:44,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 23:04:44,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 23:04:44,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 23:04:44,605 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 23:04:44,605 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 23:04:44,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 23:04:44,605 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 23:04:44,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 23:04:44,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 23:04:44,606 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 23:04:44,606 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 23:04:44,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 23:04:44,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 23:04:44,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 23:04:44,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 23:04:44,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 23:04:44,607 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 23:04:44,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 23:04:44,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 23:04:44,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 23:04:44,979 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 23:04:44,980 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 23:04:44,980 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2021-02-23 23:04:45,062 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d5d69180/013825f30037423fb20078d3eec6ad59/FLAGa8c232fe4 [2021-02-23 23:04:45,689 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 23:04:45,690 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2021-02-23 23:04:45,721 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d5d69180/013825f30037423fb20078d3eec6ad59/FLAGa8c232fe4 [2021-02-23 23:04:45,976 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d5d69180/013825f30037423fb20078d3eec6ad59 [2021-02-23 23:04:45,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 23:04:45,992 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 23:04:45,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 23:04:45,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 23:04:46,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 23:04:46,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:04:45" (1/1) ... [2021-02-23 23:04:46,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2540dc4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:46, skipping insertion in model container [2021-02-23 23:04:46,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:04:45" (1/1) ... [2021-02-23 23:04:46,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 23:04:46,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 23:04:46,190 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] [2021-02-23 23:04:46,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:04:46,370 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 23:04:46,390 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] [2021-02-23 23:04:46,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:04:46,540 INFO L208 MainTranslator]: Completed translation [2021-02-23 23:04:46,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:46 WrapperNode [2021-02-23 23:04:46,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 23:04:46,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 23:04:46,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 23:04:46,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 23:04:46,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:46" (1/1) ... [2021-02-23 23:04:46,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:46" (1/1) ... [2021-02-23 23:04:46,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:46" (1/1) ... [2021-02-23 23:04:46,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:46" (1/1) ... [2021-02-23 23:04:46,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:46" (1/1) ... [2021-02-23 23:04:46,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:46" (1/1) ... [2021-02-23 23:04:46,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:46" (1/1) ... [2021-02-23 23:04:46,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 23:04:46,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 23:04:46,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 23:04:46,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 23:04:46,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 23:04:46,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 23:04:46,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 23:04:46,723 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 23:04:46,723 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2021-02-23 23:04:46,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-23 23:04:46,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-23 23:04:46,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-02-23 23:04:46,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-02-23 23:04:46,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-02-23 23:04:46,725 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2021-02-23 23:04:46,725 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2021-02-23 23:04:46,725 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-02-23 23:04:46,725 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-02-23 23:04:46,725 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 23:04:46,726 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 23:04:46,726 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 23:04:46,726 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 23:04:46,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 23:04:46,726 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2021-02-23 23:04:46,727 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-23 23:04:46,727 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-23 23:04:46,727 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-23 23:04:46,727 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-23 23:04:46,727 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-23 23:04:46,728 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-23 23:04:46,728 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-23 23:04:46,728 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-23 23:04:46,728 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-23 23:04:46,728 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-23 23:04:46,729 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-23 23:04:46,729 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-23 23:04:46,729 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-23 23:04:46,729 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-23 23:04:46,729 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-23 23:04:46,729 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-23 23:04:46,730 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-23 23:04:46,730 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-23 23:04:46,730 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-02-23 23:04:46,730 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-02-23 23:04:46,730 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-02-23 23:04:46,730 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-23 23:04:46,731 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-23 23:04:46,731 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-23 23:04:46,731 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-23 23:04:46,731 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-23 23:04:46,731 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-23 23:04:46,731 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-23 23:04:46,732 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-23 23:04:46,732 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-23 23:04:46,732 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-23 23:04:46,732 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-23 23:04:46,732 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-23 23:04:46,732 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-23 23:04:46,733 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-23 23:04:46,733 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-23 23:04:46,733 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-23 23:04:46,733 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-23 23:04:46,733 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-23 23:04:46,734 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-23 23:04:46,734 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-23 23:04:46,734 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-23 23:04:46,734 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-23 23:04:46,734 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-23 23:04:46,734 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-23 23:04:46,734 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-23 23:04:46,735 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-23 23:04:46,735 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-23 23:04:46,735 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-23 23:04:46,735 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-23 23:04:46,735 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-23 23:04:46,735 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-23 23:04:46,752 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-23 23:04:46,757 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-23 23:04:46,757 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-23 23:04:46,757 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 23:04:46,757 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-23 23:04:46,758 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-23 23:04:46,758 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 23:04:46,758 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-23 23:04:46,758 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-23 23:04:46,758 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-23 23:04:46,759 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-23 23:04:46,759 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-23 23:04:46,759 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-23 23:04:46,759 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-23 23:04:46,759 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-23 23:04:46,759 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-23 23:04:46,760 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-23 23:04:46,760 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-23 23:04:46,760 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-23 23:04:46,760 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-23 23:04:46,760 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-23 23:04:46,760 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-23 23:04:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-23 23:04:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-23 23:04:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-23 23:04:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-23 23:04:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-23 23:04:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-23 23:04:46,762 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-23 23:04:46,762 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-23 23:04:46,762 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-23 23:04:46,762 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-23 23:04:46,762 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-23 23:04:46,762 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-23 23:04:46,763 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-23 23:04:46,763 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-23 23:04:46,763 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-23 23:04:46,763 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-23 23:04:46,763 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-23 23:04:46,763 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-23 23:04:46,764 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-23 23:04:46,764 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-23 23:04:46,764 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-23 23:04:46,764 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-23 23:04:46,764 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-23 23:04:46,764 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-23 23:04:46,765 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-23 23:04:46,765 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-23 23:04:46,765 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-23 23:04:46,765 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-23 23:04:46,765 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-23 23:04:46,765 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-23 23:04:46,765 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-23 23:04:46,766 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-23 23:04:46,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 23:04:46,766 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2021-02-23 23:04:46,766 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2021-02-23 23:04:46,766 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-02-23 23:04:46,766 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-02-23 23:04:46,767 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 23:04:46,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 23:04:46,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 23:04:46,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-02-23 23:04:46,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 23:04:46,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 23:04:46,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 23:04:46,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 23:04:46,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 23:04:46,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 23:04:47,676 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 23:04:47,677 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 23:04:47,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:04:47 BoogieIcfgContainer [2021-02-23 23:04:47,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 23:04:47,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 23:04:47,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 23:04:47,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 23:04:47,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 11:04:45" (1/3) ... [2021-02-23 23:04:47,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e32a22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:04:47, skipping insertion in model container [2021-02-23 23:04:47,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:46" (2/3) ... [2021-02-23 23:04:47,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e32a22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:04:47, skipping insertion in model container [2021-02-23 23:04:47,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:04:47" (3/3) ... [2021-02-23 23:04:47,703 INFO L111 eAbstractionObserver]: Analyzing ICFG rule60_list2.c_1.i [2021-02-23 23:04:47,711 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 23:04:47,717 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 23:04:47,739 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 23:04:47,771 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 23:04:47,771 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 23:04:47,771 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 23:04:47,772 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 23:04:47,772 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 23:04:47,772 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 23:04:47,772 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 23:04:47,772 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 23:04:47,794 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2021-02-23 23:04:47,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-23 23:04:47,805 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:47,805 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] [2021-02-23 23:04:47,806 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:47,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:47,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1068471701, now seen corresponding path program 1 times [2021-02-23 23:04:47,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:47,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584660411] [2021-02-23 23:04:47,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:47,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:48,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:48,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:48,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:48,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:48,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:48,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:48,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:48,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:48,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:48,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:04:48,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:48,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:48,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:04:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:48,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:48,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:48,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:04:48,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584660411] [2021-02-23 23:04:48,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:04:48,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 23:04:48,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78223166] [2021-02-23 23:04:48,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 23:04:48,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:04:48,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 23:04:48,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-23 23:04:48,342 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 7 states. [2021-02-23 23:04:49,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:04:49,197 INFO L93 Difference]: Finished difference Result 134 states and 163 transitions. [2021-02-23 23:04:49,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 23:04:49,200 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2021-02-23 23:04:49,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:04:49,211 INFO L225 Difference]: With dead ends: 134 [2021-02-23 23:04:49,211 INFO L226 Difference]: Without dead ends: 72 [2021-02-23 23:04:49,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-02-23 23:04:49,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-02-23 23:04:49,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2021-02-23 23:04:49,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-02-23 23:04:49,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2021-02-23 23:04:49,276 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 26 [2021-02-23 23:04:49,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:04:49,276 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2021-02-23 23:04:49,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 23:04:49,277 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2021-02-23 23:04:49,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-02-23 23:04:49,280 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:49,280 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] [2021-02-23 23:04:49,281 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 23:04:49,281 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:49,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:49,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1890572304, now seen corresponding path program 1 times [2021-02-23 23:04:49,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:49,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984716269] [2021-02-23 23:04:49,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:49,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:49,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:49,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:49,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:49,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:49,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:49,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:49,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:49,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:04:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:49,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:49,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:49,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-23 23:04:49,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:49,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:49,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:49,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:49,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 23:04:49,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:49,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 23:04:49,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 23:04:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:49,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:49,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:49,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:49,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 23:04:49,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-23 23:04:49,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:49,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:49,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:49,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 23:04:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:49,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:49,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:49,665 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-02-23 23:04:49,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984716269] [2021-02-23 23:04:49,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:04:49,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-02-23 23:04:49,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454773400] [2021-02-23 23:04:49,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 23:04:49,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:04:49,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 23:04:49,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 23:04:49,669 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand 9 states. [2021-02-23 23:04:50,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:04:50,037 INFO L93 Difference]: Finished difference Result 107 states and 122 transitions. [2021-02-23 23:04:50,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 23:04:50,040 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2021-02-23 23:04:50,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:04:50,048 INFO L225 Difference]: With dead ends: 107 [2021-02-23 23:04:50,048 INFO L226 Difference]: Without dead ends: 78 [2021-02-23 23:04:50,050 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 [2021-02-23 23:04:50,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-02-23 23:04:50,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2021-02-23 23:04:50,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-02-23 23:04:50,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2021-02-23 23:04:50,098 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 66 [2021-02-23 23:04:50,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:04:50,098 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2021-02-23 23:04:50,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 23:04:50,099 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2021-02-23 23:04:50,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-02-23 23:04:50,105 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:50,105 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] [2021-02-23 23:04:50,106 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 23:04:50,106 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:50,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:50,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1258103149, now seen corresponding path program 1 times [2021-02-23 23:04:50,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:50,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29960339] [2021-02-23 23:04:50,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:50,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:50,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:50,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:50,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:50,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:50,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:50,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:50,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:50,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:04:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:50,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:50,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:50,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-23 23:04:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:50,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:50,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:50,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 23:04:50,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:50,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:50,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:50,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-23 23:04:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:50,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:50,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:50,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:50,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 23:04:50,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:50,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 23:04:50,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 23:04:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:50,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:50,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:50,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:50,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 23:04:50,347 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-02-23 23:04:50,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29960339] [2021-02-23 23:04:50,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:04:50,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 23:04:50,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432945208] [2021-02-23 23:04:50,348 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 23:04:50,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:04:50,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 23:04:50,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 23:04:50,350 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand 9 states. [2021-02-23 23:04:50,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:04:50,640 INFO L93 Difference]: Finished difference Result 104 states and 116 transitions. [2021-02-23 23:04:50,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 23:04:50,640 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2021-02-23 23:04:50,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:04:50,642 INFO L225 Difference]: With dead ends: 104 [2021-02-23 23:04:50,642 INFO L226 Difference]: Without dead ends: 70 [2021-02-23 23:04:50,643 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 [2021-02-23 23:04:50,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-02-23 23:04:50,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2021-02-23 23:04:50,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-02-23 23:04:50,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2021-02-23 23:04:50,660 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 66 [2021-02-23 23:04:50,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:04:50,661 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2021-02-23 23:04:50,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 23:04:50,661 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2021-02-23 23:04:50,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-02-23 23:04:50,662 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:50,662 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] [2021-02-23 23:04:50,663 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 23:04:50,663 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:50,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:50,663 INFO L82 PathProgramCache]: Analyzing trace with hash 795212650, now seen corresponding path program 1 times [2021-02-23 23:04:50,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:50,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119402366] [2021-02-23 23:04:50,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:50,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:50,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:50,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:50,729 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:50,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:50,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:50,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:50,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:50,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:50,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:50,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:50,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:50,779 WARN L141 QuantifierPusher]: treesize reduction 13, result has 38.1 percent of original size [2021-02-23 23:04:50,781 WARN L147 QuantifierPusher]: treesize reduction 13, result has 38.1 percent of original size 8 [2021-02-23 23:04:50,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:50,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:50,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:04:50,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:50,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:50,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:50,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:50,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:50,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:50,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:50,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-23 23:04:50,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:50,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:50,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:50,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:50,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:04:50,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 23:04:50,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:50,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:50,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:50,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:50,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:50,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:50,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:04:50,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-23 23:04:50,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:50,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:50,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:50,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:50,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:04:50,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:50,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:04:51,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 23:04:51,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:51,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:51,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:51,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:51,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:51,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:51,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:04:51,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:51,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:04:51,048 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-02-23 23:04:51,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119402366] [2021-02-23 23:04:51,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:04:51,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-02-23 23:04:51,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333188992] [2021-02-23 23:04:51,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-23 23:04:51,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:04:51,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-23 23:04:51,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-02-23 23:04:51,050 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand 17 states. [2021-02-23 23:04:52,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:04:52,298 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2021-02-23 23:04:52,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-23 23:04:52,299 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 66 [2021-02-23 23:04:52,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:04:52,301 INFO L225 Difference]: With dead ends: 113 [2021-02-23 23:04:52,301 INFO L226 Difference]: Without dead ends: 110 [2021-02-23 23:04:52,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2021-02-23 23:04:52,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-02-23 23:04:52,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 93. [2021-02-23 23:04:52,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2021-02-23 23:04:52,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 106 transitions. [2021-02-23 23:04:52,331 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 106 transitions. Word has length 66 [2021-02-23 23:04:52,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:04:52,332 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 106 transitions. [2021-02-23 23:04:52,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-23 23:04:52,332 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 106 transitions. [2021-02-23 23:04:52,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-02-23 23:04:52,333 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:52,334 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] [2021-02-23 23:04:52,334 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 23:04:52,334 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:52,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:52,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1437147983, now seen corresponding path program 1 times [2021-02-23 23:04:52,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:52,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786681043] [2021-02-23 23:04:52,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:52,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:52,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:52,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:52,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:52,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:52,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:52,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:52,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:52,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:52,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:52,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:52,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:52,439 WARN L141 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size [2021-02-23 23:04:52,442 WARN L147 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size 12 [2021-02-23 23:04:52,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:52,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:52,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:04:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:52,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:52,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:52,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:52,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:52,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:52,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:52,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-23 23:04:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:52,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:52,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:52,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:52,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:04:52,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:52,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:04:52,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 23:04:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:52,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:52,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:52,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:52,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:52,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:52,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:04:52,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:52,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:04:52,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-23 23:04:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:52,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:52,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:52,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 23:04:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:52,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:52,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:52,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-23 23:04:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:52,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:52,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:52,741 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-23 23:04:52,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786681043] [2021-02-23 23:04:52,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:04:52,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-02-23 23:04:52,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987468238] [2021-02-23 23:04:52,747 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-23 23:04:52,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:04:52,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-23 23:04:52,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-02-23 23:04:52,750 INFO L87 Difference]: Start difference. First operand 93 states and 106 transitions. Second operand 18 states. [2021-02-23 23:04:53,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:04:53,837 INFO L93 Difference]: Finished difference Result 118 states and 134 transitions. [2021-02-23 23:04:53,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-23 23:04:53,838 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 75 [2021-02-23 23:04:53,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:04:53,840 INFO L225 Difference]: With dead ends: 118 [2021-02-23 23:04:53,840 INFO L226 Difference]: Without dead ends: 109 [2021-02-23 23:04:53,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2021-02-23 23:04:53,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-02-23 23:04:53,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 99. [2021-02-23 23:04:53,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2021-02-23 23:04:53,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 112 transitions. [2021-02-23 23:04:53,868 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 112 transitions. Word has length 75 [2021-02-23 23:04:53,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:04:53,869 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 112 transitions. [2021-02-23 23:04:53,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-23 23:04:53,869 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 112 transitions. [2021-02-23 23:04:53,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-02-23 23:04:53,870 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:53,870 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] [2021-02-23 23:04:53,871 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 23:04:53,871 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:53,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:53,871 INFO L82 PathProgramCache]: Analyzing trace with hash -2120960867, now seen corresponding path program 1 times [2021-02-23 23:04:53,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:53,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489669223] [2021-02-23 23:04:53,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:53,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:53,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:53,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:53,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:53,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:53,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:53,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:53,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:53,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:04:53,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:53,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:04:53,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:53,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:04:53,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:53,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:04:53,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:53,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:04:53,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:53,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:54,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:04:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:54,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:54,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:54,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-23 23:04:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:54,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:54,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:54,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:54,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:54,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:54,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:54,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 23:04:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:54,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:54,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:54,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:54,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:54,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-23 23:04:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:54,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:54,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:54,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:54,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:04:54,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:54,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:04:54,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 23:04:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:54,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:54,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:54,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:54,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:54,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:54,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:04:54,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:54,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:04:54,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-23 23:04:54,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:54,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:54,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:54,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:54,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:54,325 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-23 23:04:54,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489669223] [2021-02-23 23:04:54,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:04:54,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2021-02-23 23:04:54,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885704191] [2021-02-23 23:04:54,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-23 23:04:54,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:04:54,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-23 23:04:54,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2021-02-23 23:04:54,328 INFO L87 Difference]: Start difference. First operand 99 states and 112 transitions. Second operand 23 states. [2021-02-23 23:04:55,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:04:55,899 INFO L93 Difference]: Finished difference Result 117 states and 134 transitions. [2021-02-23 23:04:55,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-23 23:04:55,900 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 76 [2021-02-23 23:04:55,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:04:55,902 INFO L225 Difference]: With dead ends: 117 [2021-02-23 23:04:55,902 INFO L226 Difference]: Without dead ends: 110 [2021-02-23 23:04:55,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=210, Invalid=1682, Unknown=0, NotChecked=0, Total=1892 [2021-02-23 23:04:55,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-02-23 23:04:55,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2021-02-23 23:04:55,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2021-02-23 23:04:55,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 119 transitions. [2021-02-23 23:04:55,952 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 119 transitions. Word has length 76 [2021-02-23 23:04:55,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:04:55,954 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 119 transitions. [2021-02-23 23:04:55,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-02-23 23:04:55,954 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 119 transitions. [2021-02-23 23:04:55,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-02-23 23:04:55,963 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:55,963 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] [2021-02-23 23:04:55,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 23:04:55,963 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:55,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:55,964 INFO L82 PathProgramCache]: Analyzing trace with hash 16866635, now seen corresponding path program 1 times [2021-02-23 23:04:55,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:55,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38792317] [2021-02-23 23:04:55,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:56,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:56,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:56,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:56,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:56,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:56,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 23:04:56,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 23:04:56,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 23:04:56,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,108 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 23:04:56,123 WARN L141 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-02-23 23:04:56,126 WARN L147 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size 21 [2021-02-23 23:04:56,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:56,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:04:56,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:56,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:56,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:56,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-23 23:04:56,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:56,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:56,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 23:04:56,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 23:04:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:56,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:56,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:56,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 23:04:56,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-23 23:04:56,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:56,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:56,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 23:04:56,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 23:04:56,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 23:04:56,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:56,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:56,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:56,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 23:04:56,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 23:04:56,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-23 23:04:56,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:56,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:56,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:56,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-02-23 23:04:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:56,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:56,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-23 23:04:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:56,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 23:04:56,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:04:56,566 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-02-23 23:04:56,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38792317] [2021-02-23 23:04:56,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:04:56,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2021-02-23 23:04:56,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033976714] [2021-02-23 23:04:56,568 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-23 23:04:56,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:04:56,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-23 23:04:56,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2021-02-23 23:04:56,569 INFO L87 Difference]: Start difference. First operand 108 states and 119 transitions. Second operand 24 states. [2021-02-23 23:04:58,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:04:58,784 INFO L93 Difference]: Finished difference Result 140 states and 149 transitions. [2021-02-23 23:04:58,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-02-23 23:04:58,784 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 90 [2021-02-23 23:04:58,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:04:58,788 INFO L225 Difference]: With dead ends: 140 [2021-02-23 23:04:58,788 INFO L226 Difference]: Without dead ends: 124 [2021-02-23 23:04:58,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=319, Invalid=2543, Unknown=0, NotChecked=0, Total=2862 [2021-02-23 23:04:58,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-02-23 23:04:58,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-02-23 23:04:58,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2021-02-23 23:04:58,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 133 transitions. [2021-02-23 23:04:58,845 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 133 transitions. Word has length 90 [2021-02-23 23:04:58,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:04:58,845 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 133 transitions. [2021-02-23 23:04:58,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-02-23 23:04:58,846 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 133 transitions. [2021-02-23 23:04:58,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-02-23 23:04:58,848 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:58,848 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] [2021-02-23 23:04:58,849 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 23:04:58,849 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:58,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:58,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1329248837, now seen corresponding path program 2 times [2021-02-23 23:04:58,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:58,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376250725] [2021-02-23 23:04:58,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:58,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:58,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:58,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:58,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:58,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:58,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:58,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:58,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:04:58,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:58,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:04:58,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:58,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:04:58,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:58,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:04:58,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:58,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:04:58,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:58,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:04:58,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:58,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:59,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:04:59,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:59,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:59,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:59,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-23 23:04:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:59,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:59,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:59,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:59,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:59,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:59,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:59,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 23:04:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:59,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:59,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:59,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:59,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:59,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-23 23:04:59,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:59,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:59,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:59,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:59,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:04:59,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:59,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:04:59,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 23:04:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:59,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:59,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:59,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:59,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:59,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:59,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:04:59,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:59,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:04:59,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-23 23:04:59,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:59,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:59,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:59,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-02-23 23:04:59,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:59,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:59,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:59,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:59,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:59,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-23 23:04:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:59,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:59,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:59,399 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-02-23 23:04:59,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376250725] [2021-02-23 23:04:59,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:04:59,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2021-02-23 23:04:59,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044025415] [2021-02-23 23:04:59,400 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-23 23:04:59,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:04:59,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-23 23:04:59,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2021-02-23 23:04:59,402 INFO L87 Difference]: Start difference. First operand 124 states and 133 transitions. Second operand 24 states. [2021-02-23 23:05:01,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:01,065 INFO L93 Difference]: Finished difference Result 139 states and 149 transitions. [2021-02-23 23:05:01,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-23 23:05:01,066 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 90 [2021-02-23 23:05:01,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:01,067 INFO L225 Difference]: With dead ends: 139 [2021-02-23 23:05:01,068 INFO L226 Difference]: Without dead ends: 134 [2021-02-23 23:05:01,069 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 [2021-02-23 23:05:01,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-02-23 23:05:01,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2021-02-23 23:05:01,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2021-02-23 23:05:01,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 142 transitions. [2021-02-23 23:05:01,095 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 142 transitions. Word has length 90 [2021-02-23 23:05:01,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:01,096 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 142 transitions. [2021-02-23 23:05:01,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-02-23 23:05:01,096 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 142 transitions. [2021-02-23 23:05:01,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-02-23 23:05:01,097 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:01,097 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] [2021-02-23 23:05:01,098 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 23:05:01,098 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:01,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:01,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1789333268, now seen corresponding path program 1 times [2021-02-23 23:05:01,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:01,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674477949] [2021-02-23 23:05:01,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:01,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:01,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:01,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:01,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:01,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:01,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:01,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:01,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:01,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:01,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:01,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:01,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:05:01,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:01,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:05:01,174 WARN L141 QuantifierPusher]: treesize reduction 13, result has 38.1 percent of original size [2021-02-23 23:05:01,176 WARN L147 QuantifierPusher]: treesize reduction 13, result has 38.1 percent of original size 8 [2021-02-23 23:05:01,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:01,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:01,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:01,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:01,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:01,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:01,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:01,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-23 23:05:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:01,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:01,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:01,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:01,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:05:01,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 23:05:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:01,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:01,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:01,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:01,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:01,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:01,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:05:01,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-23 23:05:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:01,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:01,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:01,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:01,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:05:01,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:01,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:05:01,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 23:05:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:01,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:01,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:01,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:01,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:01,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:01,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:05:01,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:01,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:05:01,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-23 23:05:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:01,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:01,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:01,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-02-23 23:05:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:01,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:01,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:01,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-23 23:05:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:01,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:01,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:01,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:01,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:01,470 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-02-23 23:05:01,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674477949] [2021-02-23 23:05:01,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:05:01,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-02-23 23:05:01,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053523246] [2021-02-23 23:05:01,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-23 23:05:01,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:01,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-23 23:05:01,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-02-23 23:05:01,472 INFO L87 Difference]: Start difference. First operand 133 states and 142 transitions. Second operand 19 states. [2021-02-23 23:05:03,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:03,047 INFO L93 Difference]: Finished difference Result 160 states and 169 transitions. [2021-02-23 23:05:03,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-23 23:05:03,047 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 91 [2021-02-23 23:05:03,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:03,049 INFO L225 Difference]: With dead ends: 160 [2021-02-23 23:05:03,049 INFO L226 Difference]: Without dead ends: 147 [2021-02-23 23:05:03,050 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 [2021-02-23 23:05:03,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-02-23 23:05:03,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 132. [2021-02-23 23:05:03,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2021-02-23 23:05:03,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 140 transitions. [2021-02-23 23:05:03,078 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 140 transitions. Word has length 91 [2021-02-23 23:05:03,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:03,078 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 140 transitions. [2021-02-23 23:05:03,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-23 23:05:03,079 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 140 transitions. [2021-02-23 23:05:03,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-02-23 23:05:03,080 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:03,080 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] [2021-02-23 23:05:03,080 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 23:05:03,081 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:03,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:03,081 INFO L82 PathProgramCache]: Analyzing trace with hash -2000657900, now seen corresponding path program 1 times [2021-02-23 23:05:03,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:03,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431765181] [2021-02-23 23:05:03,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 23:05:03,099 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 23:05:03,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 23:05:03,117 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 23:05:03,171 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 23:05:03,171 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 23:05:03,172 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 23:05:03,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 11:05:03 BoogieIcfgContainer [2021-02-23 23:05:03,286 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 23:05:03,287 INFO L168 Benchmark]: Toolchain (without parser) took 17305.96 ms. Allocated memory was 154.1 MB in the beginning and 331.4 MB in the end (delta: 177.2 MB). Free memory was 129.9 MB in the beginning and 186.0 MB in the end (delta: -56.1 MB). Peak memory consumption was 122.6 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:03,292 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 154.1 MB. Free memory is still 127.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 23:05:03,293 INFO L168 Benchmark]: CACSL2BoogieTranslator took 547.44 ms. Allocated memory is still 154.1 MB. Free memory was 128.8 MB in the beginning and 106.8 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:03,293 INFO L168 Benchmark]: Boogie Preprocessor took 65.38 ms. Allocated memory is still 154.1 MB. Free memory was 106.8 MB in the beginning and 104.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:03,293 INFO L168 Benchmark]: RCFGBuilder took 1075.13 ms. Allocated memory is still 154.1 MB. Free memory was 104.2 MB in the beginning and 97.5 MB in the end (delta: 6.7 MB). Peak memory consumption was 11.4 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:03,293 INFO L168 Benchmark]: TraceAbstraction took 15599.48 ms. Allocated memory was 154.1 MB in the beginning and 331.4 MB in the end (delta: 177.2 MB). Free memory was 96.9 MB in the beginning and 186.0 MB in the end (delta: -89.0 MB). Peak memory consumption was 88.2 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:03,298 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 154.1 MB. Free memory is still 127.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 547.44 ms. Allocated memory is still 154.1 MB. Free memory was 128.8 MB in the beginning and 106.8 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 65.38 ms. Allocated memory is still 154.1 MB. Free memory was 106.8 MB in the beginning and 104.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1075.13 ms. Allocated memory is still 154.1 MB. Free memory was 104.2 MB in the beginning and 97.5 MB in the end (delta: 6.7 MB). Peak memory consumption was 11.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 15599.48 ms. Allocated memory was 154.1 MB in the beginning and 331.4 MB in the end (delta: 177.2 MB). Free memory was 96.9 MB in the beginning and 186.0 MB in the end (delta: -89.0 MB). Peak memory consumption was 88.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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; VAL [\old(elem)=53, \old(elem)=49, \old(guard_malloc_counter)=60, \old(guard_malloc_counter)=51, \old(head)=null, \old(head)=null, elem={53:49}, guard_malloc_counter={0:0}, head={62:61}] [L534] struct list_head *elem = ((void *)0); VAL [\old(elem)=53, \old(elem)=49, \old(guard_malloc_counter)=51, \old(guard_malloc_counter)=60, \old(head)=null, \old(head)=null, elem={0:0}, guard_malloc_counter={0:0}, head={62:61}] [L544] static struct list_head head; VAL [\old(elem)=53, \old(elem)=49, \old(guard_malloc_counter)=51, \old(guard_malloc_counter)=60, \old(head)=null, \old(head)=null, elem={0:0}, guard_malloc_counter={0:0}, head={3:0}] [L546] struct list_head *dev1, *dev2; VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:0}, head={3:0}] [L547] CALL, EXPR my_malloc(sizeof(*dev1)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:0}, head={3:0}] [L529] CALL, EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:0}, head={3:0}] [L522] (size > 0) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:0}, head={3:0}, size=8] [L523] guard_malloc_counter++ VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}, size=8] [L524] COND FALSE !(!__VERIFIER_nondet_int()) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, __VERIFIER_nondet_int()=1, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}, size=8] [L526] return (void *) guard_malloc_counter; VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, \result={0:1}, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}, size=8] [L529] RET, EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, __getMemory(size)={0:1}, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}, size=8] [L529] return __getMemory(size); VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, \result={0:1}, __getMemory(size)={0:1}, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}, size=8] [L547] RET, EXPR my_malloc(sizeof(*dev1)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}, my_malloc(sizeof(*dev1))={0:1}] [L547] dev1 = my_malloc(sizeof(*dev1)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}, my_malloc(sizeof(*dev1))={0:1}] [L548] CALL, EXPR my_malloc(sizeof(*dev2)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=1, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}] [L529] CALL, EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=1, \old(size)=8, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}] [L522] (size > 0) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=1, \old(size)=8, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}, size=8] [L523] guard_malloc_counter++ VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=1, \old(size)=8, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, size=8] [L524] COND FALSE !(!__VERIFIER_nondet_int()) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=1, \old(guard_malloc_counter)=0, \old(size)=8, __VERIFIER_nondet_int()=1, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, size=8] [L526] return (void *) guard_malloc_counter; VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=1, \old(size)=8, \result={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, size=8] [L529] RET, EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=1, \old(guard_malloc_counter)=0, \old(size)=8, __getMemory(size)={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, size=8] [L529] return __getMemory(size); VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=1, \old(size)=8, \result={0:2}, __getMemory(size)={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, size=8] [L548] RET, EXPR my_malloc(sizeof(*dev2)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, my_malloc(sizeof(*dev2))={0:2}] [L548] dev2 = my_malloc(sizeof(*dev2)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, my_malloc(sizeof(*dev2))={0:2}] [L549] COND TRUE dev1!=((void *)0) && dev2!=((void *)0) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}] [L550] CALL list_add(dev2, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, new={0:2}] [L536] (new!=elem) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, head={3:0}, new={0:2}, new={0:2}] [L537] COND FALSE !(__VERIFIER_nondet_int()) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, __VERIFIER_nondet_int()=0, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, head={3:0}, new={0:2}, new={0:2}] [L550] RET list_add(dev2, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}] [L551] CALL list_add(dev1, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, new={0:1}] [L536] (new!=elem) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, head={3:0}, new={0:1}, new={0:1}] [L537] COND TRUE __VERIFIER_nondet_int() VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, __VERIFIER_nondet_int()=1, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, head={3:0}, new={0:1}, new={0:1}] [L538] elem = new VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, head={3:0}, new={0:1}, new={0:1}] [L551] RET list_add(dev1, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}] [L552] CALL list_del(dev2) VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, entry={0:2}, guard_malloc_counter={0:2}, head={3:0}] [L541] COND FALSE !(entry==elem) VAL [\old(elem)=1, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, entry={0:2}, entry={0:2}, guard_malloc_counter={0:2}, head={3:0}] [L552] RET list_del(dev2) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}] [L553] CALL list_add(dev2, &head) VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, new={0:2}] [L536] (new!=elem) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, head={3:0}, new={0:2}, new={0:2}] [L537] COND FALSE !(__VERIFIER_nondet_int()) VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, __VERIFIER_nondet_int()=0, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, head={3:0}, new={0:2}, new={0:2}] [L553] RET list_add(dev2, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}] [L554] CALL list_add(dev1, &head) VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, new={0:1}] [L536] (new!=elem) ? (0) : __blast_assert () VAL [\old(elem)=1, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, head={3:0}, new={0:1}, new={0:1}] [L536] CALL __blast_assert () VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}] [L6] reach_error() VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 14 procedures, 102 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.4s, OverallIterations: 10, TraceHistogramMax: 4, AutomataDifference: 10.9s, 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, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 378 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1482 ImplicationChecksByTransitivity, 7.1s 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 745 NumberOfCodeBlocks, 745 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 637 ConstructedInterpolants, 0 QuantifiedInterpolants, 212680 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 104/179 InterpolantCoveringCapability, 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...