/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/alt_test.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:35:47,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:35:47,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:35:47,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 13:35:47,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 13:35:47,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 13:35:47,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 13:35:47,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 13:35:47,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 13:35:47,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 13:35:47,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 13:35:47,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 13:35:47,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:35:47,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:35:47,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:35:47,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:35:47,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:35:47,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:35:47,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:35:47,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:35:47,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:35:47,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:35:47,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:35:47,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:35:47,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:35:47,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:35:47,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:35:47,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:35:47,289 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-23 13:35:47,317 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:35:47,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:35:47,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:35:47,319 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:35:47,320 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:35:47,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:35:47,320 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:35:47,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:35:47,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:35:47,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:35:47,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:35:47,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:35:47,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:35:47,322 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:35:47,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:35:47,322 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:35:47,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:35:47,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:35:47,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:35:47,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:35:47,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:35:47,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:35:47,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:35:47,324 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:35:47,324 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:35:47,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:35:47,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:35:47,325 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:35:47,325 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:35:47,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:35:47,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:35:47,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:35:47,802 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:35:47,803 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:35:47,804 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/alt_test.i [2021-02-23 13:35:47,896 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dd57c8f9/0895a878f1584dae8debc5a6f379b283/FLAG62d871e80 [2021-02-23 13:35:48,672 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:35:48,672 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/alt_test.i [2021-02-23 13:35:48,685 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dd57c8f9/0895a878f1584dae8debc5a6f379b283/FLAG62d871e80 [2021-02-23 13:35:48,986 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dd57c8f9/0895a878f1584dae8debc5a6f379b283 [2021-02-23 13:35:48,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:35:49,004 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:35:49,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:35:49,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:35:49,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:35:49,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:35:48" (1/1) ... [2021-02-23 13:35:49,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ebe6a37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:49, skipping insertion in model container [2021-02-23 13:35:49,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:35:48" (1/1) ... [2021-02-23 13:35:49,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:35:49,085 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:35:49,348 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] [2021-02-23 13:35:49,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:35:49,372 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:35:49,439 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] [2021-02-23 13:35:49,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:35:49,536 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:35:49,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:49 WrapperNode [2021-02-23 13:35:49,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:35:49,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:35:49,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:35:49,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:35:49,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:49" (1/1) ... [2021-02-23 13:35:49,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:49" (1/1) ... [2021-02-23 13:35:49,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:49" (1/1) ... [2021-02-23 13:35:49,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:49" (1/1) ... [2021-02-23 13:35:49,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:49" (1/1) ... [2021-02-23 13:35:49,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:49" (1/1) ... [2021-02-23 13:35:49,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:49" (1/1) ... [2021-02-23 13:35:49,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:35:49,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:35:49,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:35:49,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:35:49,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:49" (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 13:35:49,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:35:49,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:35:49,872 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:35:49,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-23 13:35:49,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-23 13:35:49,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-02-23 13:35:49,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-02-23 13:35:49,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-02-23 13:35:49,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2021-02-23 13:35:49,873 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:35:49,873 INFO L138 BoogieDeclarations]: Found implementation of procedure l_malloc [2021-02-23 13:35:49,873 INFO L138 BoogieDeclarations]: Found implementation of procedure l_free [2021-02-23 13:35:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:35:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:35:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:35:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:35:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-23 13:35:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-23 13:35:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-23 13:35:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-23 13:35:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-23 13:35:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-23 13:35:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-23 13:35:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-23 13:35:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-23 13:35:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-23 13:35:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-23 13:35:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-23 13:35:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-23 13:35:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-23 13:35:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-23 13:35:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-23 13:35:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-23 13:35:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-23 13:35:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-02-23 13:35:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-02-23 13:35:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-02-23 13:35:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-23 13:35:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-23 13:35:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-23 13:35:49,879 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-23 13:35:49,879 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-23 13:35:49,879 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-23 13:35:49,879 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-23 13:35:49,879 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-23 13:35:49,879 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-23 13:35:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-23 13:35:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-23 13:35:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-23 13:35:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-23 13:35:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-23 13:35:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-23 13:35:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-23 13:35:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-23 13:35:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-23 13:35:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-23 13:35:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-23 13:35:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-23 13:35:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-23 13:35:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-23 13:35:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-23 13:35:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-23 13:35:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-23 13:35:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-23 13:35:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-23 13:35:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-23 13:35:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-23 13:35:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-23 13:35:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-23 13:35:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-23 13:35:49,884 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-23 13:35:49,884 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 13:35:49,884 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-23 13:35:49,884 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-23 13:35:49,884 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 13:35:49,884 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-23 13:35:49,885 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-23 13:35:49,885 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-23 13:35:49,885 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-23 13:35:49,885 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-23 13:35:49,885 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-23 13:35:49,886 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-23 13:35:49,886 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-23 13:35:49,886 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-23 13:35:49,886 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-23 13:35:49,886 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-23 13:35:49,886 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-23 13:35:49,887 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-23 13:35:49,887 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-23 13:35:49,887 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-23 13:35:49,887 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-23 13:35:49,887 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-23 13:35:49,887 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-23 13:35:49,888 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-23 13:35:49,888 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-23 13:35:49,888 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-23 13:35:49,888 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-23 13:35:49,888 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-23 13:35:49,888 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-23 13:35:49,888 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-23 13:35:49,889 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-23 13:35:49,889 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-23 13:35:49,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-23 13:35:49,889 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-23 13:35:49,890 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-23 13:35:49,890 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-23 13:35:49,890 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-23 13:35:49,890 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-23 13:35:49,890 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-23 13:35:49,891 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-23 13:35:49,891 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-23 13:35:49,891 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-23 13:35:49,891 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-23 13:35:49,891 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-23 13:35:49,892 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-23 13:35:49,892 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-23 13:35:49,892 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-23 13:35:49,892 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-23 13:35:49,892 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-23 13:35:49,892 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-23 13:35:49,892 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-23 13:35:49,893 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-23 13:35:49,893 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2021-02-23 13:35:49,893 INFO L130 BoogieDeclarations]: Found specification of procedure l_malloc [2021-02-23 13:35:49,893 INFO L130 BoogieDeclarations]: Found specification of procedure l_free [2021-02-23 13:35:49,893 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:35:49,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 13:35:49,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:35:49,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:35:49,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:35:49,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:35:49,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:35:49,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:35:50,594 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:35:50,594 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 13:35:50,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:35:50 BoogieIcfgContainer [2021-02-23 13:35:50,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:35:50,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:35:50,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:35:50,602 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:35:50,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:35:48" (1/3) ... [2021-02-23 13:35:50,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74370aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:35:50, skipping insertion in model container [2021-02-23 13:35:50,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:49" (2/3) ... [2021-02-23 13:35:50,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74370aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:35:50, skipping insertion in model container [2021-02-23 13:35:50,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:35:50" (3/3) ... [2021-02-23 13:35:50,605 INFO L111 eAbstractionObserver]: Analyzing ICFG alt_test.i [2021-02-23 13:35:50,613 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:35:50,618 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:35:50,641 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:35:50,671 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:35:50,671 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:35:50,671 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:35:50,672 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:35:50,672 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:35:50,672 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:35:50,672 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:35:50,672 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:35:50,691 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2021-02-23 13:35:50,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-02-23 13:35:50,698 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:35:50,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:35:50,699 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:35:50,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:35:50,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1024515637, now seen corresponding path program 1 times [2021-02-23 13:35:50,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:35:50,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879983224] [2021-02-23 13:35:50,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:35:50,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:35:50,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:50,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:50,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:50,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:35:50,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:50,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:35:50,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:50,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:51,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:35:51,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:35:51,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:51,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:51,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:35:51,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:35:51,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:51,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:51,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:51,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 13:35:51,125 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 13:35:51,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879983224] [2021-02-23 13:35:51,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:35:51,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 13:35:51,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057795497] [2021-02-23 13:35:51,137 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 13:35:51,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:35:51,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 13:35:51,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 13:35:51,156 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2021-02-23 13:35:51,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:35:51,414 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2021-02-23 13:35:51,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 13:35:51,417 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2021-02-23 13:35:51,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:35:51,428 INFO L225 Difference]: With dead ends: 55 [2021-02-23 13:35:51,428 INFO L226 Difference]: Without dead ends: 33 [2021-02-23 13:35:51,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-02-23 13:35:51,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-02-23 13:35:51,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2021-02-23 13:35:51,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-02-23 13:35:51,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2021-02-23 13:35:51,493 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 19 [2021-02-23 13:35:51,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:35:51,494 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2021-02-23 13:35:51,494 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 13:35:51,495 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2021-02-23 13:35:51,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-02-23 13:35:51,497 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:35:51,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:35:51,498 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:35:51,498 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:35:51,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:35:51,500 INFO L82 PathProgramCache]: Analyzing trace with hash -323451059, now seen corresponding path program 1 times [2021-02-23 13:35:51,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:35:51,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673766652] [2021-02-23 13:35:51,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:35:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:35:51,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:51,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:51,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:51,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:51,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:35:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:35:51,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:51,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:51,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:35:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:35:51,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:51,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 13:35:51,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:51,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:51,774 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 13:35:51,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673766652] [2021-02-23 13:35:51,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:35:51,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 13:35:51,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63842481] [2021-02-23 13:35:51,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 13:35:51,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:35:51,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 13:35:51,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 13:35:51,782 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 5 states. [2021-02-23 13:35:51,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:35:51,890 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2021-02-23 13:35:51,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 13:35:51,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2021-02-23 13:35:51,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:35:51,894 INFO L225 Difference]: With dead ends: 42 [2021-02-23 13:35:51,894 INFO L226 Difference]: Without dead ends: 27 [2021-02-23 13:35:51,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 13:35:51,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-02-23 13:35:51,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-02-23 13:35:51,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-02-23 13:35:51,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2021-02-23 13:35:51,908 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 19 [2021-02-23 13:35:51,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:35:51,908 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2021-02-23 13:35:51,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 13:35:51,908 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2021-02-23 13:35:51,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-23 13:35:51,909 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:35:51,910 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] [2021-02-23 13:35:51,910 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:35:51,910 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:35:51,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:35:51,911 INFO L82 PathProgramCache]: Analyzing trace with hash 119074525, now seen corresponding path program 1 times [2021-02-23 13:35:51,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:35:51,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403231358] [2021-02-23 13:35:51,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:35:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:35:51,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:51,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:51,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:51,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 13:35:51,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:51,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 13:35:51,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:51,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:52,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:35:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:35:52,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:52,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:52,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:35:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:35:52,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:52,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:35:52,080 WARN L141 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-02-23 13:35:52,081 WARN L147 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size 9 [2021-02-23 13:35:52,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:52,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 13:35:52,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 13:35:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:35:52,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:52,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:35:52,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:52,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:35:52,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:35:52,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403231358] [2021-02-23 13:35:52,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:35:52,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-23 13:35:52,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837360426] [2021-02-23 13:35:52,172 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 13:35:52,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:35:52,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 13:35:52,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-02-23 13:35:52,173 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 12 states. [2021-02-23 13:35:52,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:35:52,604 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2021-02-23 13:35:52,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 13:35:52,605 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2021-02-23 13:35:52,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:35:52,607 INFO L225 Difference]: With dead ends: 40 [2021-02-23 13:35:52,607 INFO L226 Difference]: Without dead ends: 27 [2021-02-23 13:35:52,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-02-23 13:35:52,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-02-23 13:35:52,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-02-23 13:35:52,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-02-23 13:35:52,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-02-23 13:35:52,629 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2021-02-23 13:35:52,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:35:52,630 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-02-23 13:35:52,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 13:35:52,631 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-02-23 13:35:52,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-23 13:35:52,634 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:35:52,634 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] [2021-02-23 13:35:52,634 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 13:35:52,634 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:35:52,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:35:52,635 INFO L82 PathProgramCache]: Analyzing trace with hash -2073107059, now seen corresponding path program 1 times [2021-02-23 13:35:52,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:35:52,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772438275] [2021-02-23 13:35:52,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:35:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:35:52,683 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:35:52,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:35:52,723 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:35:52,761 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-23 13:35:52,762 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 13:35:52,764 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 13:35:52,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:35:52 BoogieIcfgContainer [2021-02-23 13:35:52,849 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:35:52,851 INFO L168 Benchmark]: Toolchain (without parser) took 3858.36 ms. Allocated memory was 162.5 MB in the beginning and 217.1 MB in the end (delta: 54.5 MB). Free memory was 136.7 MB in the beginning and 196.7 MB in the end (delta: -59.9 MB). Peak memory consumption was 89.7 MB. Max. memory is 8.0 GB. [2021-02-23 13:35:52,851 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 162.5 MB. Free memory is still 135.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:35:52,852 INFO L168 Benchmark]: CACSL2BoogieTranslator took 528.64 ms. Allocated memory is still 162.5 MB. Free memory was 135.6 MB in the beginning and 114.2 MB in the end (delta: 21.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-23 13:35:52,853 INFO L168 Benchmark]: Boogie Preprocessor took 175.34 ms. Allocated memory is still 162.5 MB. Free memory was 114.2 MB in the beginning and 145.2 MB in the end (delta: -30.9 MB). Peak memory consumption was 5.0 MB. Max. memory is 8.0 GB. [2021-02-23 13:35:52,854 INFO L168 Benchmark]: RCFGBuilder took 876.14 ms. Allocated memory is still 162.5 MB. Free memory was 145.2 MB in the beginning and 107.2 MB in the end (delta: 37.9 MB). Peak memory consumption was 37.7 MB. Max. memory is 8.0 GB. [2021-02-23 13:35:52,854 INFO L168 Benchmark]: TraceAbstraction took 2251.12 ms. Allocated memory was 162.5 MB in the beginning and 217.1 MB in the end (delta: 54.5 MB). Free memory was 106.7 MB in the beginning and 196.7 MB in the end (delta: -90.0 MB). Peak memory consumption was 59.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:35:52,858 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 162.5 MB. Free memory is still 135.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 528.64 ms. Allocated memory is still 162.5 MB. Free memory was 135.6 MB in the beginning and 114.2 MB in the end (delta: 21.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 175.34 ms. Allocated memory is still 162.5 MB. Free memory was 114.2 MB in the beginning and 145.2 MB in the end (delta: -30.9 MB). Peak memory consumption was 5.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 876.14 ms. Allocated memory is still 162.5 MB. Free memory was 145.2 MB in the beginning and 107.2 MB in the end (delta: 37.9 MB). Peak memory consumption was 37.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2251.12 ms. Allocated memory was 162.5 MB in the beginning and 217.1 MB in the end (delta: 54.5 MB). Free memory was 106.7 MB in the beginning and 196.7 MB in the end (delta: -90.0 MB). Peak memory consumption was 59.5 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; VAL [\old(globalState)=54, globalState=0] [L523] CALL, EXPR l_malloc(sizeof(int)) VAL [\old(globalState)=0, \old(size)=4, globalState=0] [L529] void *retVal = malloc(size); VAL [\old(globalState)=0, \old(size)=4, globalState=0, malloc(size)={1:0}, retVal={1:0}, size=4] [L530] COND TRUE retVal != ((void *)0) [L531] globalState=1 VAL [\old(globalState)=0, \old(size)=4, globalState=1, malloc(size)={1:0}, retVal={1:0}, size=4] [L532] return retVal; VAL [\old(globalState)=0, \old(size)=4, \result={1:0}, globalState=1, malloc(size)={1:0}, retVal={1:0}, size=4] [L523] RET, EXPR l_malloc(sizeof(int)) VAL [\old(argc)=60, \old(globalState)=0, argc=60, argv={56:51}, argv={56:51}, globalState=1, l_malloc(sizeof(int))={1:0}] [L523] int *a = (int*) l_malloc(sizeof(int)); [L524] CALL l_free(a) VAL [\old(globalState)=1, globalState=1, ptr={1:0}] [L535] COND TRUE ptr!=((void *)0) VAL [\old(globalState)=1, globalState=1, ptr={1:0}, ptr={1:0}] [L535] (globalState == 1) ? (0) : __blast_assert () VAL [\old(globalState)=1, globalState=1, ptr={1:0}, ptr={1:0}] [L536] globalState = 0 [L524] RET l_free(a) VAL [\old(argc)=60, \old(globalState)=0, a={1:0}, argc=60, argv={56:51}, argv={56:51}, globalState=0] [L525] CALL l_free(a) VAL [\old(globalState)=0, globalState=0, ptr={1:0}] [L535] COND TRUE ptr!=((void *)0) VAL [\old(globalState)=0, globalState=0, ptr={1:0}, ptr={1:0}] [L535] (globalState == 1) ? (0) : __blast_assert () VAL [\old(globalState)=0, globalState=0, ptr={1:0}, ptr={1:0}] [L535] CALL __blast_assert () VAL [\old(globalState)=0, globalState=0] [L516] reach_error() VAL [\old(globalState)=0, globalState=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 49 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.0s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 59 SDtfs, 41 SDslu, 136 SDs, 0 SdLazy, 190 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=1, 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 5520 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 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...