/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/alt_test.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:55:35,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:55:35,458 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:55:35,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 01:55:35,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 01:55:35,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 01:55:35,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 01:55:35,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 01:55:35,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 01:55:35,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 01:55:35,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 01:55:35,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 01:55:35,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:55:35,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:55:35,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:55:35,516 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:55:35,517 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:55:35,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:55:35,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:55:35,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:55:35,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:55:35,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:55:35,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:55:35,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:55:35,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 01:55:35,547 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 01:55:35,548 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 01:55:35,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 01:55:35,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 01:55:35,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 01:55:35,551 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 01:55:35,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 01:55:35,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 01:55:35,553 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:55:35,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:55:35,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:55:35,555 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:55:35,568 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:55:35,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:55:35,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:55:35,570 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:55:35,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:55:35,570 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:55:35,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:55:35,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:55:35,571 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:55:35,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:55:35,571 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:55:35,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:55:35,571 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:55:35,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:55:35,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:55:35,572 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:55:35,572 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:55:35,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:55:35,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:55:35,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:55:35,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:55:35,573 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:55:35,573 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:55:35,574 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:55:35,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:55:36,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:55:36,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:55:36,023 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:55:36,024 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:55:36,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/alt_test.i [2021-02-22 01:55:36,101 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3445e9727/8d6eb61dfea74f9c8a569328497a6e8c/FLAG8e56acd4a [2021-02-22 01:55:36,837 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:55:36,838 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/alt_test.i [2021-02-22 01:55:36,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3445e9727/8d6eb61dfea74f9c8a569328497a6e8c/FLAG8e56acd4a [2021-02-22 01:55:37,027 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3445e9727/8d6eb61dfea74f9c8a569328497a6e8c [2021-02-22 01:55:37,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:55:37,048 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:55:37,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:55:37,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:55:37,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:55:37,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:55:37" (1/1) ... [2021-02-22 01:55:37,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31a11923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:55:37, skipping insertion in model container [2021-02-22 01:55:37,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:55:37" (1/1) ... [2021-02-22 01:55:37,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:55:37,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:55:37,480 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/alt_test.i[22285,22298] [2021-02-22 01:55:37,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:55:37,513 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:55:37,588 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/alt_test.i[22285,22298] [2021-02-22 01:55:37,597 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:55:37,666 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:55:37,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:55:37 WrapperNode [2021-02-22 01:55:37,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:55:37,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:55:37,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:55:37,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:55:37,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:55:37" (1/1) ... [2021-02-22 01:55:37,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:55:37" (1/1) ... [2021-02-22 01:55:37,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:55:37" (1/1) ... [2021-02-22 01:55:37,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:55:37" (1/1) ... [2021-02-22 01:55:37,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:55:37" (1/1) ... [2021-02-22 01:55:37,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:55:37" (1/1) ... [2021-02-22 01:55:37,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:55:37" (1/1) ... [2021-02-22 01:55:37,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:55:37,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:55:37,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:55:37,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:55:37,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:55:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:55:37,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:55:37,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:55:37,962 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:55:37,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-22 01:55:37,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-22 01:55:37,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-02-22 01:55:37,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-02-22 01:55:37,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-02-22 01:55:37,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2021-02-22 01:55:37,964 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:55:37,964 INFO L138 BoogieDeclarations]: Found implementation of procedure l_malloc [2021-02-22 01:55:37,964 INFO L138 BoogieDeclarations]: Found implementation of procedure l_free [2021-02-22 01:55:37,964 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:55:37,964 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:55:37,965 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:55:37,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:55:37,965 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-22 01:55:37,965 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-22 01:55:37,965 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-22 01:55:37,966 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-22 01:55:37,966 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-22 01:55:37,966 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-22 01:55:37,966 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-22 01:55:37,966 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-22 01:55:37,966 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-22 01:55:37,967 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-22 01:55:37,967 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-22 01:55:37,967 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-22 01:55:37,967 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-22 01:55:37,967 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-22 01:55:37,968 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-22 01:55:37,968 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-22 01:55:37,968 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-22 01:55:37,968 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-22 01:55:37,968 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-02-22 01:55:37,968 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-02-22 01:55:37,969 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-02-22 01:55:37,969 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-22 01:55:37,969 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-22 01:55:37,969 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-22 01:55:37,969 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-22 01:55:37,969 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-22 01:55:37,970 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-22 01:55:37,970 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-22 01:55:37,970 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-22 01:55:37,970 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-22 01:55:37,970 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-22 01:55:37,970 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-22 01:55:37,970 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-22 01:55:37,971 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-22 01:55:37,971 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-22 01:55:37,971 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-22 01:55:37,971 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-22 01:55:37,971 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-22 01:55:37,971 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-22 01:55:37,971 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-22 01:55:37,972 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-22 01:55:37,972 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-22 01:55:37,972 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-22 01:55:37,972 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-22 01:55:37,972 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-22 01:55:37,972 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-22 01:55:37,973 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-22 01:55:37,973 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-22 01:55:37,973 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-22 01:55:37,973 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-22 01:55:37,973 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-22 01:55:37,973 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-22 01:55:37,973 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-22 01:55:37,974 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-22 01:55:37,974 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-22 01:55:37,974 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 01:55:37,974 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-22 01:55:37,974 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-22 01:55:37,974 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-22 01:55:37,975 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-22 01:55:37,975 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-22 01:55:37,975 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-22 01:55:37,975 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-22 01:55:37,975 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-22 01:55:37,975 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-22 01:55:37,975 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-22 01:55:37,976 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-22 01:55:37,976 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-22 01:55:37,976 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-22 01:55:37,976 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-22 01:55:37,976 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-22 01:55:37,976 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-22 01:55:37,977 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-22 01:55:37,977 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-22 01:55:37,977 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-22 01:55:37,977 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-22 01:55:37,977 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-22 01:55:37,977 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-22 01:55:37,978 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-22 01:55:37,978 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-22 01:55:37,978 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-22 01:55:37,978 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-22 01:55:37,978 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-22 01:55:37,978 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-22 01:55:37,978 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-22 01:55:37,979 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-22 01:55:37,979 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-22 01:55:37,979 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-22 01:55:37,979 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-22 01:55:37,979 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-22 01:55:37,979 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-22 01:55:37,979 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-22 01:55:37,980 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-22 01:55:37,980 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-22 01:55:37,980 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-22 01:55:37,980 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-22 01:55:37,980 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-22 01:55:37,980 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-22 01:55:37,980 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-22 01:55:37,980 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-22 01:55:37,981 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-22 01:55:37,981 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-22 01:55:37,981 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-22 01:55:37,981 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-22 01:55:37,981 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-22 01:55:37,981 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-22 01:55:37,981 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2021-02-22 01:55:37,982 INFO L130 BoogieDeclarations]: Found specification of procedure l_malloc [2021-02-22 01:55:37,982 INFO L130 BoogieDeclarations]: Found specification of procedure l_free [2021-02-22 01:55:37,982 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:55:37,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 01:55:37,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:55:37,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:55:37,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:55:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:55:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:55:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:55:38,560 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:55:38,561 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-22 01:55:38,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:55:38 BoogieIcfgContainer [2021-02-22 01:55:38,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:55:38,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:55:38,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:55:38,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:55:38,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:55:37" (1/3) ... [2021-02-22 01:55:38,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@472a0d5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:55:38, skipping insertion in model container [2021-02-22 01:55:38,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:55:37" (2/3) ... [2021-02-22 01:55:38,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@472a0d5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:55:38, skipping insertion in model container [2021-02-22 01:55:38,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:55:38" (3/3) ... [2021-02-22 01:55:38,573 INFO L111 eAbstractionObserver]: Analyzing ICFG alt_test.i [2021-02-22 01:55:38,580 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:55:38,586 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:55:38,608 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:55:38,635 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:55:38,636 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:55:38,636 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:55:38,636 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:55:38,636 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:55:38,636 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:55:38,637 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:55:38,637 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:55:38,654 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2021-02-22 01:55:38,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-22 01:55:38,665 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:55:38,666 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, 1, 1, 1, 1, 1] [2021-02-22 01:55:38,667 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:55:38,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:55:38,674 INFO L82 PathProgramCache]: Analyzing trace with hash -229608300, now seen corresponding path program 1 times [2021-02-22 01:55:38,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:55:38,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143017610] [2021-02-22 01:55:38,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:55:38,786 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:55:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:55:38,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:38,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:55:38,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:38,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:55:39,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:55:39,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:55:39,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:39,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:55:39,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-22 01:55:39,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:55:39,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:39,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:55:39,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:39,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:55:39,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:39,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:55:39,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:39,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:55:39,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:55:39,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143017610] [2021-02-22 01:55:39,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:55:39,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 01:55:39,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008918109] [2021-02-22 01:55:39,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 01:55:39,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:55:39,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 01:55:39,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-22 01:55:39,222 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 6 states. [2021-02-22 01:55:39,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:55:39,470 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2021-02-22 01:55:39,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-22 01:55:39,472 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2021-02-22 01:55:39,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:55:39,482 INFO L225 Difference]: With dead ends: 68 [2021-02-22 01:55:39,482 INFO L226 Difference]: Without dead ends: 38 [2021-02-22 01:55:39,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-22 01:55:39,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-02-22 01:55:39,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-02-22 01:55:39,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-02-22 01:55:39,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2021-02-22 01:55:39,540 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 31 [2021-02-22 01:55:39,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:55:39,541 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2021-02-22 01:55:39,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 01:55:39,541 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2021-02-22 01:55:39,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-22 01:55:39,543 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:55:39,543 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, 1, 1, 1, 1, 1, 1] [2021-02-22 01:55:39,543 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:55:39,543 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:55:39,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:55:39,545 INFO L82 PathProgramCache]: Analyzing trace with hash 941411187, now seen corresponding path program 1 times [2021-02-22 01:55:39,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:55:39,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196678589] [2021-02-22 01:55:39,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:55:39,554 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:55:39,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:55:39,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:39,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:55:39,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:39,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:55:39,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:39,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:55:39,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:39,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:55:39,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:55:39,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:55:39,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:39,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:55:39,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-22 01:55:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:55:39,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:39,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:55:39,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:39,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:55:39,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:55:39,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196678589] [2021-02-22 01:55:39,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:55:39,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-22 01:55:39,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656836575] [2021-02-22 01:55:39,740 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-22 01:55:39,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:55:39,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-22 01:55:39,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-22 01:55:39,741 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 5 states. [2021-02-22 01:55:39,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:55:39,868 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2021-02-22 01:55:39,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-22 01:55:39,869 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2021-02-22 01:55:39,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:55:39,871 INFO L225 Difference]: With dead ends: 45 [2021-02-22 01:55:39,871 INFO L226 Difference]: Without dead ends: 41 [2021-02-22 01:55:39,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-02-22 01:55:39,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-02-22 01:55:39,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-02-22 01:55:39,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-02-22 01:55:39,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-02-22 01:55:39,886 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 32 [2021-02-22 01:55:39,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:55:39,886 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-02-22 01:55:39,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-22 01:55:39,886 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-02-22 01:55:39,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-22 01:55:39,888 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:55:39,888 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-22 01:55:39,888 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:55:39,889 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:55:39,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:55:39,889 INFO L82 PathProgramCache]: Analyzing trace with hash 623439375, now seen corresponding path program 1 times [2021-02-22 01:55:39,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:55:39,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936592280] [2021-02-22 01:55:39,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:55:39,895 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:55:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:55:39,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:39,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:55:39,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:39,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:55:39,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:39,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:55:39,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:39,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:55:39,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:55:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:55:39,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:39,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:55:39,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-22 01:55:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:55:40,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:40,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:55:40,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:40,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:55:40,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:40,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:55:40,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:40,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:55:40,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-22 01:55:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:55:40,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:40,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:55:40,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:40,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:55:40,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:55:40,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936592280] [2021-02-22 01:55:40,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:55:40,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-22 01:55:40,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310015098] [2021-02-22 01:55:40,080 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-22 01:55:40,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:55:40,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-22 01:55:40,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-02-22 01:55:40,082 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 12 states. [2021-02-22 01:55:40,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:55:40,378 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2021-02-22 01:55:40,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-22 01:55:40,378 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2021-02-22 01:55:40,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:55:40,383 INFO L225 Difference]: With dead ends: 56 [2021-02-22 01:55:40,383 INFO L226 Difference]: Without dead ends: 41 [2021-02-22 01:55:40,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2021-02-22 01:55:40,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-02-22 01:55:40,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-02-22 01:55:40,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-02-22 01:55:40,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2021-02-22 01:55:40,406 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2021-02-22 01:55:40,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:55:40,407 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2021-02-22 01:55:40,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-22 01:55:40,407 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2021-02-22 01:55:40,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-22 01:55:40,411 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:55:40,411 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-22 01:55:40,411 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 01:55:40,411 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:55:40,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:55:40,413 INFO L82 PathProgramCache]: Analyzing trace with hash 666606726, now seen corresponding path program 1 times [2021-02-22 01:55:40,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:55:40,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917121194] [2021-02-22 01:55:40,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:55:40,425 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:55:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:55:40,465 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:55:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:55:40,504 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:55:40,550 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:55:40,550 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:55:40,551 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 01:55:40,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:55:40 BoogieIcfgContainer [2021-02-22 01:55:40,571 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:55:40,573 INFO L168 Benchmark]: Toolchain (without parser) took 3537.80 ms. Allocated memory was 161.5 MB in the beginning and 197.1 MB in the end (delta: 35.7 MB). Free memory was 136.5 MB in the beginning and 133.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 40.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:55:40,574 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 161.5 MB. Free memory is still 135.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:55:40,574 INFO L168 Benchmark]: CACSL2BoogieTranslator took 615.41 ms. Allocated memory is still 161.5 MB. Free memory was 135.5 MB in the beginning and 114.5 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:55:40,575 INFO L168 Benchmark]: Boogie Preprocessor took 97.56 ms. Allocated memory is still 161.5 MB. Free memory was 114.5 MB in the beginning and 112.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:55:40,576 INFO L168 Benchmark]: RCFGBuilder took 796.57 ms. Allocated memory is still 161.5 MB. Free memory was 112.2 MB in the beginning and 106.9 MB in the end (delta: 5.3 MB). Peak memory consumption was 5.4 MB. Max. memory is 8.0 GB. [2021-02-22 01:55:40,577 INFO L168 Benchmark]: TraceAbstraction took 2006.22 ms. Allocated memory was 161.5 MB in the beginning and 197.1 MB in the end (delta: 35.7 MB). Free memory was 106.4 MB in the beginning and 133.2 MB in the end (delta: -26.8 MB). Peak memory consumption was 10.4 MB. Max. memory is 8.0 GB. [2021-02-22 01:55:40,580 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 161.5 MB. Free memory is still 135.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 615.41 ms. Allocated memory is still 161.5 MB. Free memory was 135.5 MB in the beginning and 114.5 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 97.56 ms. Allocated memory is still 161.5 MB. Free memory was 114.5 MB in the beginning and 112.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 796.57 ms. Allocated memory is still 161.5 MB. Free memory was 112.2 MB in the beginning and 106.9 MB in the end (delta: 5.3 MB). Peak memory consumption was 5.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2006.22 ms. Allocated memory was 161.5 MB in the beginning and 197.1 MB in the end (delta: 35.7 MB). Free memory was 106.4 MB in the beginning and 133.2 MB in the end (delta: -26.8 MB). Peak memory consumption was 10.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 516]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L518] int globalState = 0; [L523] CALL, EXPR l_malloc(sizeof(int)) [L529] void *retVal = malloc(size); [L530] COND TRUE retVal != ((void *)0) [L531] globalState=1 [L532] return retVal; [L523] RET, EXPR l_malloc(sizeof(int)) [L523] int *a = (int*) l_malloc(sizeof(int)); [L524] CALL l_free(a) [L535] COND TRUE ptr!=((void *)0) [L535] (globalState == 1) ? (0) : __blast_assert () [L536] globalState = 0 [L524] RET l_free(a) [L525] CALL l_free(a) [L535] COND TRUE ptr!=((void *)0) [L535] (globalState == 1) ? (0) : __blast_assert () [L535] CALL __blast_assert () [L516] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 71 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 99 SDtfs, 63 SDslu, 260 SDs, 0 SdLazy, 291 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...