/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/list-properties/simple-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 01:03:02,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 01:03:02,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 01:03:02,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 01:03:02,649 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 01:03:02,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 01:03:02,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 01:03:02,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 01:03:02,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 01:03:02,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 01:03:02,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 01:03:02,661 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 01:03:02,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 01:03:02,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 01:03:02,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 01:03:02,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 01:03:02,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 01:03:02,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 01:03:02,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 01:03:02,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 01:03:02,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 01:03:02,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 01:03:02,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 01:03:02,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 01:03:02,681 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 01:03:02,681 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 01:03:02,682 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 01:03:02,683 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 01:03:02,683 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 01:03:02,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 01:03:02,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 01:03:02,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 01:03:02,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 01:03:02,692 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 01:03:02,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 01:03:02,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 01:03:02,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 01:03:02,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 01:03:02,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 01:03:02,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 01:03:02,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 01:03:02,701 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 01:03:02,725 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 01:03:02,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 01:03:02,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 01:03:02,730 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 01:03:02,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 01:03:02,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 01:03:02,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 01:03:02,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 01:03:02,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 01:03:02,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 01:03:02,733 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 01:03:02,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 01:03:02,734 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 01:03:02,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 01:03:02,735 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 01:03:02,735 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 01:03:02,735 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 01:03:02,735 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 01:03:02,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 01:03:02,736 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 01:03:02,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 01:03:02,752 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 01:03:02,752 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 01:03:03,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 01:03:03,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 01:03:03,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 01:03:03,212 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 01:03:03,213 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 01:03:03,214 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/simple-1.i [2020-10-24 01:03:03,287 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd42eaa4a/dfc4b7f1aaae4a969a0b88c99920347e/FLAG40bb1ab6b [2020-10-24 01:03:03,996 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 01:03:03,997 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/simple-1.i [2020-10-24 01:03:04,014 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd42eaa4a/dfc4b7f1aaae4a969a0b88c99920347e/FLAG40bb1ab6b [2020-10-24 01:03:04,261 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd42eaa4a/dfc4b7f1aaae4a969a0b88c99920347e [2020-10-24 01:03:04,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 01:03:04,272 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 01:03:04,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 01:03:04,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 01:03:04,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 01:03:04,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:03:04" (1/1) ... [2020-10-24 01:03:04,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@765fbfd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:04, skipping insertion in model container [2020-10-24 01:03:04,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:03:04" (1/1) ... [2020-10-24 01:03:04,291 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 01:03:04,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 01:03:04,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 01:03:04,697 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 01:03:04,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 01:03:04,850 INFO L208 MainTranslator]: Completed translation [2020-10-24 01:03:04,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:04 WrapperNode [2020-10-24 01:03:04,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 01:03:04,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 01:03:04,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 01:03:04,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 01:03:04,866 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:04" (1/1) ... [2020-10-24 01:03:04,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:04" (1/1) ... [2020-10-24 01:03:04,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:04" (1/1) ... [2020-10-24 01:03:04,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:04" (1/1) ... [2020-10-24 01:03:04,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:04" (1/1) ... [2020-10-24 01:03:04,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:04" (1/1) ... [2020-10-24 01:03:04,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:04" (1/1) ... [2020-10-24 01:03:04,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 01:03:04,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 01:03:04,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 01:03:04,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 01:03:04,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:04" (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 [2020-10-24 01:03:05,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 01:03:05,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 01:03:05,071 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 01:03:05,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-24 01:03:05,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-24 01:03:05,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-24 01:03:05,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-24 01:03:05,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-24 01:03:05,073 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-24 01:03:05,073 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 01:03:05,074 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 01:03:05,074 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 01:03:05,074 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-24 01:03:05,075 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-24 01:03:05,075 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 01:03:05,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 01:03:05,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 01:03:05,076 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-24 01:03:05,076 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-24 01:03:05,077 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-24 01:03:05,077 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-24 01:03:05,077 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-24 01:03:05,080 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-24 01:03:05,080 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-24 01:03:05,080 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-24 01:03:05,080 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-24 01:03:05,080 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-24 01:03:05,081 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-24 01:03:05,081 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-24 01:03:05,081 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-24 01:03:05,081 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-24 01:03:05,081 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-24 01:03:05,081 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-24 01:03:05,082 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-24 01:03:05,082 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-24 01:03:05,082 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-24 01:03:05,082 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-24 01:03:05,082 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-24 01:03:05,082 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-24 01:03:05,083 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-24 01:03:05,083 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-24 01:03:05,083 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-24 01:03:05,083 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-24 01:03:05,083 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-24 01:03:05,083 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-24 01:03:05,084 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-24 01:03:05,084 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-24 01:03:05,084 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-24 01:03:05,084 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-24 01:03:05,084 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-24 01:03:05,084 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-24 01:03:05,085 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-24 01:03:05,085 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-24 01:03:05,085 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-24 01:03:05,085 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-24 01:03:05,085 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-24 01:03:05,085 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-24 01:03:05,086 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-24 01:03:05,086 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-24 01:03:05,086 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-24 01:03:05,086 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-24 01:03:05,086 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-24 01:03:05,087 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-24 01:03:05,087 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-24 01:03:05,088 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-24 01:03:05,088 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-24 01:03:05,088 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-24 01:03:05,088 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-24 01:03:05,088 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-24 01:03:05,088 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-24 01:03:05,089 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-24 01:03:05,089 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-24 01:03:05,089 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-24 01:03:05,089 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-24 01:03:05,090 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-24 01:03:05,090 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-24 01:03:05,090 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-24 01:03:05,090 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-24 01:03:05,090 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-24 01:03:05,090 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-24 01:03:05,091 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-24 01:03:05,091 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-24 01:03:05,092 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-24 01:03:05,093 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-24 01:03:05,093 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-24 01:03:05,093 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-24 01:03:05,093 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-24 01:03:05,094 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-24 01:03:05,094 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-24 01:03:05,094 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-24 01:03:05,095 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-24 01:03:05,095 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-24 01:03:05,095 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-24 01:03:05,096 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-24 01:03:05,096 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-24 01:03:05,096 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-24 01:03:05,096 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-24 01:03:05,096 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-24 01:03:05,096 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-24 01:03:05,097 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-24 01:03:05,097 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-24 01:03:05,097 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-24 01:03:05,097 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-24 01:03:05,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-24 01:03:05,097 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-24 01:03:05,097 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-24 01:03:05,098 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-24 01:03:05,098 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-24 01:03:05,098 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-24 01:03:05,098 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-24 01:03:05,098 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-24 01:03:05,098 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-24 01:03:05,099 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-24 01:03:05,099 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-24 01:03:05,099 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-24 01:03:05,099 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-24 01:03:05,099 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-24 01:03:05,099 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-24 01:03:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-24 01:03:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-24 01:03:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-24 01:03:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-24 01:03:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-24 01:03:05,101 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-24 01:03:05,101 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 01:03:05,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-24 01:03:05,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 01:03:05,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-24 01:03:05,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-24 01:03:05,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 01:03:05,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 01:03:05,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 01:03:05,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 01:03:05,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 01:03:05,576 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-24 01:03:05,741 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 01:03:05,742 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-24 01:03:05,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:03:05 BoogieIcfgContainer [2020-10-24 01:03:05,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 01:03:05,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 01:03:05,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 01:03:05,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 01:03:05,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:03:04" (1/3) ... [2020-10-24 01:03:05,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5992e295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:03:05, skipping insertion in model container [2020-10-24 01:03:05,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:04" (2/3) ... [2020-10-24 01:03:05,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5992e295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:03:05, skipping insertion in model container [2020-10-24 01:03:05,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:03:05" (3/3) ... [2020-10-24 01:03:05,761 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-1.i [2020-10-24 01:03:05,774 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 01:03:05,781 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 01:03:05,795 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 01:03:05,820 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 01:03:05,821 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 01:03:05,821 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 01:03:05,821 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 01:03:05,821 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 01:03:05,821 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 01:03:05,821 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 01:03:05,822 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 01:03:05,838 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2020-10-24 01:03:05,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-24 01:03:05,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:03:05,850 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] [2020-10-24 01:03:05,850 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:03:05,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:03:05,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1477386638, now seen corresponding path program 1 times [2020-10-24 01:03:05,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:03:05,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973524539] [2020-10-24 01:03:05,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:03:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:06,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:03:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:06,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:03:06,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973524539] [2020-10-24 01:03:06,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:03:06,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-24 01:03:06,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258850723] [2020-10-24 01:03:06,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-24 01:03:06,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:03:06,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-24 01:03:06,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 01:03:06,202 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 3 states. [2020-10-24 01:03:06,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:03:06,434 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2020-10-24 01:03:06,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 01:03:06,436 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-10-24 01:03:06,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:03:06,454 INFO L225 Difference]: With dead ends: 77 [2020-10-24 01:03:06,458 INFO L226 Difference]: Without dead ends: 44 [2020-10-24 01:03:06,468 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 [2020-10-24 01:03:06,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-24 01:03:06,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-24 01:03:06,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-24 01:03:06,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-10-24 01:03:06,528 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 28 [2020-10-24 01:03:06,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:03:06,528 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-10-24 01:03:06,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-24 01:03:06,529 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-10-24 01:03:06,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-24 01:03:06,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:03:06,531 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] [2020-10-24 01:03:06,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 01:03:06,532 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:03:06,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:03:06,533 INFO L82 PathProgramCache]: Analyzing trace with hash -293697380, now seen corresponding path program 1 times [2020-10-24 01:03:06,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:03:06,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846405333] [2020-10-24 01:03:06,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:03:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:06,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:03:06,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:06,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:03:06,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846405333] [2020-10-24 01:03:06,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:03:06,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-24 01:03:06,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561175775] [2020-10-24 01:03:06,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 01:03:06,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:03:06,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 01:03:06,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-24 01:03:06,804 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 8 states. [2020-10-24 01:03:07,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:03:07,074 INFO L93 Difference]: Finished difference Result 86 states and 90 transitions. [2020-10-24 01:03:07,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-24 01:03:07,075 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-10-24 01:03:07,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:03:07,078 INFO L225 Difference]: With dead ends: 86 [2020-10-24 01:03:07,078 INFO L226 Difference]: Without dead ends: 81 [2020-10-24 01:03:07,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-24 01:03:07,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-24 01:03:07,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 53. [2020-10-24 01:03:07,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-24 01:03:07,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-10-24 01:03:07,093 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 30 [2020-10-24 01:03:07,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:03:07,094 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-10-24 01:03:07,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 01:03:07,094 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-10-24 01:03:07,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-24 01:03:07,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:03:07,096 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:03:07,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 01:03:07,096 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:03:07,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:03:07,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1136768431, now seen corresponding path program 1 times [2020-10-24 01:03:07,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:03:07,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610223555] [2020-10-24 01:03:07,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:03:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:07,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:03:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:07,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:03:07,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610223555] [2020-10-24 01:03:07,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:03:07,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 01:03:07,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834102499] [2020-10-24 01:03:07,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 01:03:07,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:03:07,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 01:03:07,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-24 01:03:07,329 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 10 states. [2020-10-24 01:03:07,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:03:07,761 INFO L93 Difference]: Finished difference Result 86 states and 89 transitions. [2020-10-24 01:03:07,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-24 01:03:07,762 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2020-10-24 01:03:07,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:03:07,763 INFO L225 Difference]: With dead ends: 86 [2020-10-24 01:03:07,764 INFO L226 Difference]: Without dead ends: 62 [2020-10-24 01:03:07,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-24 01:03:07,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-24 01:03:07,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 46. [2020-10-24 01:03:07,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-24 01:03:07,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-10-24 01:03:07,787 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 37 [2020-10-24 01:03:07,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:03:07,787 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-10-24 01:03:07,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 01:03:07,788 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-10-24 01:03:07,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-24 01:03:07,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:03:07,792 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] [2020-10-24 01:03:07,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 01:03:07,793 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:03:07,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:03:07,793 INFO L82 PathProgramCache]: Analyzing trace with hash 971250021, now seen corresponding path program 1 times [2020-10-24 01:03:07,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:03:07,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056152238] [2020-10-24 01:03:07,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:03:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 01:03:07,849 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 01:03:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 01:03:07,894 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 01:03:07,936 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-24 01:03:07,937 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 01:03:07,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-24 01:03:07,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:03:07 BoogieIcfgContainer [2020-10-24 01:03:07,981 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 01:03:07,984 INFO L168 Benchmark]: Toolchain (without parser) took 3716.08 ms. Allocated memory was 168.8 MB in the beginning and 203.4 MB in the end (delta: 34.6 MB). Free memory was 144.4 MB in the beginning and 144.3 MB in the end (delta: 111.3 kB). Peak memory consumption was 35.6 MB. Max. memory is 8.0 GB. [2020-10-24 01:03:07,985 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory was 104.1 MB in the beginning and 104.0 MB in the end (delta: 120.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 01:03:07,986 INFO L168 Benchmark]: CACSL2BoogieTranslator took 576.93 ms. Allocated memory is still 168.8 MB. Free memory was 143.8 MB in the beginning and 122.4 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-24 01:03:07,987 INFO L168 Benchmark]: Boogie Preprocessor took 127.75 ms. Allocated memory is still 168.8 MB. Free memory was 122.4 MB in the beginning and 151.1 MB in the end (delta: -28.8 MB). Peak memory consumption was 5.8 MB. Max. memory is 8.0 GB. [2020-10-24 01:03:07,987 INFO L168 Benchmark]: RCFGBuilder took 763.29 ms. Allocated memory is still 168.8 MB. Free memory was 151.1 MB in the beginning and 150.2 MB in the end (delta: 933.8 kB). Peak memory consumption was 45.4 MB. Max. memory is 8.0 GB. [2020-10-24 01:03:07,989 INFO L168 Benchmark]: TraceAbstraction took 2233.92 ms. Allocated memory was 168.8 MB in the beginning and 203.4 MB in the end (delta: 34.6 MB). Free memory was 149.8 MB in the beginning and 144.3 MB in the end (delta: 5.5 MB). Peak memory consumption was 40.1 MB. Max. memory is 8.0 GB. [2020-10-24 01:03:07,993 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 125.8 MB. Free memory was 104.1 MB in the beginning and 104.0 MB in the end (delta: 120.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 576.93 ms. Allocated memory is still 168.8 MB. Free memory was 143.8 MB in the beginning and 122.4 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 127.75 ms. Allocated memory is still 168.8 MB. Free memory was 122.4 MB in the beginning and 151.1 MB in the end (delta: -28.8 MB). Peak memory consumption was 5.8 MB. Max. memory is 8.0 GB. * RCFGBuilder took 763.29 ms. Allocated memory is still 168.8 MB. Free memory was 151.1 MB in the beginning and 150.2 MB in the end (delta: 933.8 kB). Peak memory consumption was 45.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2233.92 ms. Allocated memory was 168.8 MB in the beginning and 203.4 MB in the end (delta: 34.6 MB). Free memory was 149.8 MB in the beginning and 144.3 MB in the end (delta: 5.5 MB). Peak memory consumption was 40.1 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] List a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L533] COND FALSE !(a == 0) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L534] List t; VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L535] List p = a; VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L536] a->h = 2 VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L537] COND TRUE __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L538] p->h = 1 VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L539] t = (List) malloc(sizeof(struct node)) VAL [a={-1:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-2:0}] [L540] COND FALSE !(t == 0) VAL [a={-1:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-2:0}] [L541] p->n = t VAL [a={-1:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-2:0}] [L542] EXPR p->n VAL [a={-1:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->n={-2:0}, t={-2:0}] [L542] p = p->n VAL [a={-1:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-2:0}, p->n={-2:0}, t={-2:0}] [L537] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, a={-1:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-2:0}, t={-2:0}] [L544] p->h = 2 VAL [a={-1:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-2:0}, t={-2:0}] [L545] p->n = 0 VAL [a={-1:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-2:0}, t={-2:0}] [L546] p = a VAL [a={-1:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-2:0}] [L547] COND TRUE p!=0 VAL [a={-1:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-2:0}] [L548] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=1, t={-2:0}] [L548] COND TRUE p->h != 2 VAL [a={-1:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=1, t={-2:0}] [L549] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "simple-1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 80 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.1s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 121 SDtfs, 189 SDslu, 270 SDs, 0 SdLazy, 309 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 44 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 14173 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 2/3 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...