/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/list-properties/list_flag-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 00:49:54,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:49:54,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:49:54,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 00:49:54,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 00:49:54,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 00:49:54,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 00:49:54,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 00:49:54,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 00:49:54,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 00:49:54,647 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 00:49:54,648 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 00:49:54,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:49:54,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:49:54,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:49:54,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:49:54,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:49:54,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:49:54,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:49:54,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:49:54,688 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:49:54,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:49:54,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:49:54,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:49:54,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 00:49:54,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 00:49:54,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 00:49:54,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 00:49:54,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 00:49:54,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 00:49:54,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 00:49:54,708 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 00:49:54,710 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 00:49:54,711 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 00:49:54,712 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 00:49:54,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 00:49:54,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 00:49:54,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 00:49:54,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:49:54,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:49:54,715 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:49:54,717 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 00:49:54,739 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:49:54,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:49:54,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:49:54,744 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:49:54,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:49:54,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:49:54,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:49:54,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:49:54,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:49:54,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:49:54,747 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:49:54,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:49:54,747 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:49:54,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:49:54,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:49:54,749 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:49:54,749 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:49:54,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:49:54,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:49:54,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:49:54,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:49:54,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:49:54,751 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:49:55,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:49:55,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:49:55,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:49:55,224 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:49:55,225 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:49:55,226 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_flag-1.i [2020-11-07 00:49:55,304 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2147d4314/9f389b93cd65470db159f0923430950d/FLAG3b3d835c9 [2020-11-07 00:49:55,922 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:49:55,923 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list_flag-1.i [2020-11-07 00:49:55,944 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2147d4314/9f389b93cd65470db159f0923430950d/FLAG3b3d835c9 [2020-11-07 00:49:56,217 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2147d4314/9f389b93cd65470db159f0923430950d [2020-11-07 00:49:56,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:49:56,227 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:49:56,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:49:56,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:49:56,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:49:56,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:49:56" (1/1) ... [2020-11-07 00:49:56,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@466d5595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:56, skipping insertion in model container [2020-11-07 00:49:56,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:49:56" (1/1) ... [2020-11-07 00:49:56,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:49:56,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:49:56,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:49:56,636 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:49:56,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:49:56,781 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:49:56,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:56 WrapperNode [2020-11-07 00:49:56,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:49:56,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:49:56,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:49:56,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:49:56,796 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:56" (1/1) ... [2020-11-07 00:49:56,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:56" (1/1) ... [2020-11-07 00:49:56,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:56" (1/1) ... [2020-11-07 00:49:56,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:56" (1/1) ... [2020-11-07 00:49:56,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:56" (1/1) ... [2020-11-07 00:49:56,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:56" (1/1) ... [2020-11-07 00:49:56,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:56" (1/1) ... [2020-11-07 00:49:56,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:49:56,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:49:56,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:49:56,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:49:56,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:56" (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 [2020-11-07 00:49:56,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:49:56,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:49:56,936 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:49:56,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-07 00:49:56,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-07 00:49:56,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-07 00:49:56,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-07 00:49:56,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-07 00:49:56,937 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-11-07 00:49:56,937 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:49:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:49:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:49:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-07 00:49:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-07 00:49:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:49:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:49:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 00:49:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-07 00:49:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-07 00:49:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-07 00:49:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-07 00:49:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-07 00:49:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-07 00:49:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-07 00:49:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-07 00:49:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-07 00:49:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-07 00:49:56,940 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-07 00:49:56,956 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-07 00:49:56,956 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-07 00:49:56,956 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-07 00:49:56,956 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-07 00:49:56,959 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-07 00:49:56,959 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-07 00:49:56,960 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-07 00:49:56,960 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-07 00:49:56,960 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-07 00:49:56,960 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-07 00:49:56,960 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-07 00:49:56,960 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-07 00:49:56,961 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-07 00:49:56,961 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-07 00:49:56,961 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-07 00:49:56,961 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-07 00:49:56,961 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-07 00:49:56,961 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-07 00:49:56,962 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-07 00:49:56,962 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-07 00:49:56,962 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-07 00:49:56,962 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-07 00:49:56,962 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-07 00:49:56,962 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-07 00:49:56,962 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-07 00:49:56,963 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-07 00:49:56,963 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-07 00:49:56,963 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-07 00:49:56,963 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-07 00:49:56,963 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-07 00:49:56,963 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-07 00:49:56,964 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-07 00:49:56,964 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-07 00:49:56,964 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-07 00:49:56,964 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-07 00:49:56,964 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-07 00:49:56,964 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-07 00:49:56,964 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-07 00:49:56,965 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-07 00:49:56,965 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-07 00:49:56,965 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-07 00:49:56,965 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-07 00:49:56,965 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-07 00:49:56,965 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-07 00:49:56,965 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 00:49:56,966 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-07 00:49:56,966 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-07 00:49:56,966 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-07 00:49:56,966 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-07 00:49:56,966 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-07 00:49:56,966 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-07 00:49:56,966 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-07 00:49:56,967 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-07 00:49:56,967 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-07 00:49:56,967 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-07 00:49:56,967 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-07 00:49:56,967 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-07 00:49:56,967 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-07 00:49:56,968 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-07 00:49:56,968 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-07 00:49:56,968 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-07 00:49:56,968 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-07 00:49:56,968 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-07 00:49:56,968 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-07 00:49:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-07 00:49:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-07 00:49:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-07 00:49:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-07 00:49:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-07 00:49:56,970 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-07 00:49:56,970 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-07 00:49:56,970 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-07 00:49:56,970 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-07 00:49:56,970 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-07 00:49:56,970 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-07 00:49:56,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-07 00:49:56,971 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-07 00:49:56,971 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-07 00:49:56,971 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-07 00:49:56,971 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-07 00:49:56,971 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-07 00:49:56,971 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-07 00:49:56,972 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-07 00:49:56,972 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-07 00:49:56,972 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-07 00:49:56,972 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-07 00:49:56,972 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-07 00:49:56,972 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-07 00:49:56,973 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-07 00:49:56,973 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-07 00:49:56,973 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-07 00:49:56,973 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-07 00:49:56,973 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-07 00:49:56,973 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-07 00:49:56,973 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-07 00:49:56,974 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-11-07 00:49:56,974 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:49:56,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 00:49:56,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:49:56,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-07 00:49:56,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-07 00:49:56,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:49:56,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:49:56,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:49:56,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:49:56,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:49:57,338 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-11-07 00:49:57,621 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:49:57,622 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-11-07 00:49:57,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:49:57 BoogieIcfgContainer [2020-11-07 00:49:57,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:49:57,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:49:57,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:49:57,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:49:57,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:49:56" (1/3) ... [2020-11-07 00:49:57,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36255a5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:49:57, skipping insertion in model container [2020-11-07 00:49:57,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:56" (2/3) ... [2020-11-07 00:49:57,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36255a5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:49:57, skipping insertion in model container [2020-11-07 00:49:57,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:49:57" (3/3) ... [2020-11-07 00:49:57,643 INFO L111 eAbstractionObserver]: Analyzing ICFG list_flag-1.i [2020-11-07 00:49:57,661 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:49:57,669 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 00:49:57,688 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 00:49:57,720 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:49:57,721 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:49:57,721 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:49:57,721 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:49:57,721 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:49:57,721 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:49:57,721 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:49:57,722 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:49:57,739 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-11-07 00:49:57,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-07 00:49:57,748 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:49:57,749 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] [2020-11-07 00:49:57,750 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:49:57,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:49:57,755 INFO L82 PathProgramCache]: Analyzing trace with hash 193386265, now seen corresponding path program 1 times [2020-11-07 00:49:57,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:49:57,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864519812] [2020-11-07 00:49:57,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:49:57,854 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:49:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:58,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:49:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:58,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:49:58,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864519812] [2020-11-07 00:49:58,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:49:58,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 00:49:58,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220169529] [2020-11-07 00:49:58,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 00:49:58,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:49:58,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 00:49:58,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 00:49:58,065 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 3 states. [2020-11-07 00:49:58,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:49:58,243 INFO L93 Difference]: Finished difference Result 101 states and 119 transitions. [2020-11-07 00:49:58,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 00:49:58,245 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-11-07 00:49:58,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:49:58,254 INFO L225 Difference]: With dead ends: 101 [2020-11-07 00:49:58,255 INFO L226 Difference]: Without dead ends: 59 [2020-11-07 00:49:58,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 00:49:58,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-07 00:49:58,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-11-07 00:49:58,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-07 00:49:58,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-11-07 00:49:58,310 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 32 [2020-11-07 00:49:58,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:49:58,311 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-11-07 00:49:58,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 00:49:58,311 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-11-07 00:49:58,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-07 00:49:58,313 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:49:58,313 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, 1, 1, 1, 1] [2020-11-07 00:49:58,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:49:58,314 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:49:58,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:49:58,315 INFO L82 PathProgramCache]: Analyzing trace with hash 116865489, now seen corresponding path program 1 times [2020-11-07 00:49:58,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:49:58,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114194116] [2020-11-07 00:49:58,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:49:58,322 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:49:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:58,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:49:58,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:58,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:49:58,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114194116] [2020-11-07 00:49:58,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:49:58,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-07 00:49:58,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868777977] [2020-11-07 00:49:58,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 00:49:58,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:49:58,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 00:49:58,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-07 00:49:58,540 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 7 states. [2020-11-07 00:49:58,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:49:58,844 INFO L93 Difference]: Finished difference Result 128 states and 140 transitions. [2020-11-07 00:49:58,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-07 00:49:58,844 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-11-07 00:49:58,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:49:58,848 INFO L225 Difference]: With dead ends: 128 [2020-11-07 00:49:58,848 INFO L226 Difference]: Without dead ends: 119 [2020-11-07 00:49:58,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-07 00:49:58,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-11-07 00:49:58,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 69. [2020-11-07 00:49:58,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-11-07 00:49:58,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2020-11-07 00:49:58,865 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 36 [2020-11-07 00:49:58,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:49:58,865 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2020-11-07 00:49:58,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 00:49:58,866 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2020-11-07 00:49:58,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-07 00:49:58,867 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:49:58,867 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, 1, 1, 1] [2020-11-07 00:49:58,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 00:49:58,868 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:49:58,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:49:58,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1324191625, now seen corresponding path program 1 times [2020-11-07 00:49:58,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:49:58,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814920043] [2020-11-07 00:49:58,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:49:58,928 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 00:49:58,933 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:49:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:59,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:49:59,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:59,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:49:59,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814920043] [2020-11-07 00:49:59,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:49:59,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-07 00:49:59,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029401637] [2020-11-07 00:49:59,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 00:49:59,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:49:59,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 00:49:59,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-07 00:49:59,085 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand 7 states. [2020-11-07 00:49:59,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:49:59,340 INFO L93 Difference]: Finished difference Result 123 states and 133 transitions. [2020-11-07 00:49:59,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-07 00:49:59,340 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-11-07 00:49:59,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:49:59,342 INFO L225 Difference]: With dead ends: 123 [2020-11-07 00:49:59,342 INFO L226 Difference]: Without dead ends: 107 [2020-11-07 00:49:59,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-07 00:49:59,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-11-07 00:49:59,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 67. [2020-11-07 00:49:59,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-11-07 00:49:59,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2020-11-07 00:49:59,354 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 42 [2020-11-07 00:49:59,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:49:59,354 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2020-11-07 00:49:59,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 00:49:59,355 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2020-11-07 00:49:59,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-07 00:49:59,356 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:49:59,356 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, 1, 1, 1] [2020-11-07 00:49:59,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 00:49:59,357 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:49:59,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:49:59,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1634728969, now seen corresponding path program 1 times [2020-11-07 00:49:59,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:49:59,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2008995338] [2020-11-07 00:49:59,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:49:59,384 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 00:49:59,388 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:49:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:59,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:49:59,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:59,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:49:59,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2008995338] [2020-11-07 00:49:59,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:49:59,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-07 00:49:59,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553954968] [2020-11-07 00:49:59,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 00:49:59,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:49:59,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 00:49:59,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-07 00:49:59,501 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand 7 states. [2020-11-07 00:49:59,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:49:59,724 INFO L93 Difference]: Finished difference Result 107 states and 115 transitions. [2020-11-07 00:49:59,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 00:49:59,725 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-11-07 00:49:59,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:49:59,726 INFO L225 Difference]: With dead ends: 107 [2020-11-07 00:49:59,726 INFO L226 Difference]: Without dead ends: 87 [2020-11-07 00:49:59,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-07 00:49:59,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-11-07 00:49:59,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 61. [2020-11-07 00:49:59,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-07 00:49:59,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-11-07 00:49:59,736 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 42 [2020-11-07 00:49:59,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:49:59,737 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-11-07 00:49:59,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 00:49:59,737 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-11-07 00:49:59,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-07 00:49:59,738 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:49:59,739 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:49:59,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 00:49:59,739 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:49:59,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:49:59,739 INFO L82 PathProgramCache]: Analyzing trace with hash 537702587, now seen corresponding path program 1 times [2020-11-07 00:49:59,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:49:59,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217950050] [2020-11-07 00:49:59,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:49:59,973 WARN L194 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 89 [2020-11-07 00:50:00,018 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:50:00,094 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:50:00,100 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:50:00,171 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:50:00,173 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-07 00:50:00,174 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:145, output treesize:121 [2020-11-07 00:50:00,249 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 00:50:00,253 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:50:00,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:00,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:50:00,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:00,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:50:00,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217950050] [2020-11-07 00:50:00,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:50:00,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:50:00,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239783362] [2020-11-07 00:50:00,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:50:00,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:50:00,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:50:00,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:50:00,329 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 4 states. [2020-11-07 00:50:00,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:50:00,459 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2020-11-07 00:50:00,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:50:00,460 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-11-07 00:50:00,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:50:00,461 INFO L225 Difference]: With dead ends: 118 [2020-11-07 00:50:00,461 INFO L226 Difference]: Without dead ends: 80 [2020-11-07 00:50:00,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:50:00,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-07 00:50:00,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2020-11-07 00:50:00,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-07 00:50:00,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 81 transitions. [2020-11-07 00:50:00,471 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 81 transitions. Word has length 48 [2020-11-07 00:50:00,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:50:00,472 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 81 transitions. [2020-11-07 00:50:00,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:50:00,472 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 81 transitions. [2020-11-07 00:50:00,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-07 00:50:00,473 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:50:00,473 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:50:00,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 00:50:00,474 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:50:00,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:50:00,474 INFO L82 PathProgramCache]: Analyzing trace with hash 179721659, now seen corresponding path program 1 times [2020-11-07 00:50:00,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:50:00,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070934861] [2020-11-07 00:50:00,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:50:00,740 WARN L194 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 89 [2020-11-07 00:50:00,759 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:50:00,842 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:50:00,848 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:50:00,915 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:50:00,917 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-07 00:50:00,919 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:145, output treesize:121 [2020-11-07 00:50:00,985 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 00:50:00,991 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:50:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:50:01,031 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:50:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:50:01,067 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:50:01,120 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 00:50:01,120 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 00:50:01,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 00:50:01,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:50:01 BoogieIcfgContainer [2020-11-07 00:50:01,146 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:50:01,149 INFO L168 Benchmark]: Toolchain (without parser) took 4926.17 ms. Allocated memory was 161.5 MB in the beginning and 194.0 MB in the end (delta: 32.5 MB). Free memory was 137.5 MB in the beginning and 106.6 MB in the end (delta: 30.8 MB). Peak memory consumption was 64.1 MB. Max. memory is 8.0 GB. [2020-11-07 00:50:01,149 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 161.5 MB. Free memory is still 134.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:50:01,151 INFO L168 Benchmark]: CACSL2BoogieTranslator took 554.04 ms. Allocated memory is still 161.5 MB. Free memory was 137.0 MB in the beginning and 115.3 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-11-07 00:50:01,156 INFO L168 Benchmark]: Boogie Preprocessor took 73.90 ms. Allocated memory is still 161.5 MB. Free memory was 115.3 MB in the beginning and 112.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-11-07 00:50:01,158 INFO L168 Benchmark]: RCFGBuilder took 767.36 ms. Allocated memory is still 161.5 MB. Free memory was 112.6 MB in the beginning and 103.8 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.7 MB. Max. memory is 8.0 GB. [2020-11-07 00:50:01,158 INFO L168 Benchmark]: TraceAbstraction took 3517.48 ms. Allocated memory was 161.5 MB in the beginning and 194.0 MB in the end (delta: 32.5 MB). Free memory was 103.3 MB in the beginning and 106.6 MB in the end (delta: -3.3 MB). Peak memory consumption was 30.2 MB. Max. memory is 8.0 GB. [2020-11-07 00:50:01,169 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 161.5 MB. Free memory is still 134.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 554.04 ms. Allocated memory is still 161.5 MB. Free memory was 137.0 MB in the beginning and 115.3 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 73.90 ms. Allocated memory is still 161.5 MB. Free memory was 115.3 MB in the beginning and 112.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 767.36 ms. Allocated memory is still 161.5 MB. Free memory was 112.6 MB in the beginning and 103.8 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3517.48 ms. Allocated memory was 161.5 MB in the beginning and 194.0 MB in the end (delta: 32.5 MB). Free memory was 103.3 MB in the beginning and 106.6 MB in the end (delta: -3.3 MB). Peak memory consumption was 30.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L532] int flag = __VERIFIER_nondet_int(); [L533] List p, a, t; [L534] a = (List) malloc(sizeof(struct node)) [L535] COND FALSE !(a == 0) [L536] p = a [L537] COND TRUE __VERIFIER_nondet_int() [L538] COND FALSE !(\read(flag)) [L541] p->h = 2 [L543] t = (List) malloc(sizeof(struct node)) [L544] COND FALSE !(t == 0) [L545] p->n = t [L546] EXPR p->n [L546] p = p->n [L537] COND FALSE !(__VERIFIER_nondet_int()) [L548] p->h = 3 [L549] p = a [L550] COND FALSE !(\read(flag)) [L554] EXPR p->h [L554] COND FALSE !(p->h == 1) [L556] EXPR p->h [L556] COND TRUE p->h != 3 [L557] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "list_flag-1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 95 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.4s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 298 SDtfs, 242 SDslu, 531 SDs, 0 SdLazy, 621 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=5, 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, 5 MinimizatonAttempts, 120 StatesRemovedByMinimization, 4 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...