/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 0.2.0-7d8eed3 [2020-11-07 05:15:10,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 05:15:10,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 05:15:10,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 05:15:10,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 05:15:10,073 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 05:15:10,077 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 05:15:10,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 05:15:10,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 05:15:10,092 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 05:15:10,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 05:15:10,102 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 05:15:10,103 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 05:15:10,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 05:15:10,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 05:15:10,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 05:15:10,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 05:15:10,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 05:15:10,121 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 05:15:10,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 05:15:10,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 05:15:10,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 05:15:10,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 05:15:10,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 05:15:10,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 05:15:10,142 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 05:15:10,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 05:15:10,148 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 05:15:10,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 05:15:10,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 05:15:10,151 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 05:15:10,152 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 05:15:10,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 05:15:10,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 05:15:10,155 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 05:15:10,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 05:15:10,157 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 05:15:10,157 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 05:15:10,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 05:15:10,158 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 05:15:10,159 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 05:15:10,160 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 05:15:10,180 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 05:15:10,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 05:15:10,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 05:15:10,182 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 05:15:10,182 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 05:15:10,182 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 05:15:10,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 05:15:10,183 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 05:15:10,183 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 05:15:10,183 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 05:15:10,183 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 05:15:10,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 05:15:10,184 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 05:15:10,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 05:15:10,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 05:15:10,184 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 05:15:10,184 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 05:15:10,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 05:15:10,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 05:15:10,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 05:15:10,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 05:15:10,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 05:15:10,186 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 05:15:10,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 05:15:10,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 05:15:10,600 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 05:15:10,601 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 05:15:10,602 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 05:15:10,603 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/simple-1.i [2020-11-07 05:15:10,680 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28b42fa10/82b958ff462d46eb91559e8f3cf4b0f1/FLAGd4017653e [2020-11-07 05:15:11,412 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 05:15:11,413 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/simple-1.i [2020-11-07 05:15:11,428 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28b42fa10/82b958ff462d46eb91559e8f3cf4b0f1/FLAGd4017653e [2020-11-07 05:15:11,641 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28b42fa10/82b958ff462d46eb91559e8f3cf4b0f1 [2020-11-07 05:15:11,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 05:15:11,654 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 05:15:11,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 05:15:11,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 05:15:11,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 05:15:11,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:15:11" (1/1) ... [2020-11-07 05:15:11,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3586f2cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:11, skipping insertion in model container [2020-11-07 05:15:11,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:15:11" (1/1) ... [2020-11-07 05:15:11,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 05:15:11,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 05:15:12,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:15:12,093 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 05:15:12,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:15:12,271 INFO L208 MainTranslator]: Completed translation [2020-11-07 05:15:12,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:12 WrapperNode [2020-11-07 05:15:12,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 05:15:12,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 05:15:12,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 05:15:12,273 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 05:15:12,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:12" (1/1) ... [2020-11-07 05:15:12,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:12" (1/1) ... [2020-11-07 05:15:12,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:12" (1/1) ... [2020-11-07 05:15:12,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:12" (1/1) ... [2020-11-07 05:15:12,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:12" (1/1) ... [2020-11-07 05:15:12,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:12" (1/1) ... [2020-11-07 05:15:12,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:12" (1/1) ... [2020-11-07 05:15:12,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 05:15:12,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 05:15:12,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 05:15:12,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 05:15:12,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:12" (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 05:15:12,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 05:15:12,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 05:15:12,443 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 05:15:12,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-07 05:15:12,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-07 05:15:12,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-07 05:15:12,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-07 05:15:12,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-07 05:15:12,444 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-11-07 05:15:12,444 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 05:15:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 05:15:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 05:15:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-07 05:15:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-07 05:15:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 05:15:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 05:15:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 05:15:12,446 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-07 05:15:12,446 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-07 05:15:12,446 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-07 05:15:12,446 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-07 05:15:12,446 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-07 05:15:12,446 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-07 05:15:12,447 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-07 05:15:12,447 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-07 05:15:12,447 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-07 05:15:12,447 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-07 05:15:12,447 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-07 05:15:12,448 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-07 05:15:12,448 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-07 05:15:12,448 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-07 05:15:12,448 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-07 05:15:12,448 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-07 05:15:12,448 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-07 05:15:12,449 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-07 05:15:12,449 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-07 05:15:12,449 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-07 05:15:12,449 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-07 05:15:12,449 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-07 05:15:12,450 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-07 05:15:12,450 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-07 05:15:12,450 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-07 05:15:12,450 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-07 05:15:12,450 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-07 05:15:12,450 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-07 05:15:12,451 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-07 05:15:12,451 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-07 05:15:12,451 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-07 05:15:12,451 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-07 05:15:12,451 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-07 05:15:12,451 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-07 05:15:12,452 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-07 05:15:12,452 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-07 05:15:12,452 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-07 05:15:12,452 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-07 05:15:12,452 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-07 05:15:12,452 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-07 05:15:12,452 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-07 05:15:12,453 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-07 05:15:12,453 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-07 05:15:12,453 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-07 05:15:12,453 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-07 05:15:12,453 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-07 05:15:12,454 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-07 05:15:12,454 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-07 05:15:12,454 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-07 05:15:12,454 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-07 05:15:12,454 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-07 05:15:12,454 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-07 05:15:12,455 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-07 05:15:12,455 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-07 05:15:12,455 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-07 05:15:12,455 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 05:15:12,455 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-07 05:15:12,456 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-07 05:15:12,456 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-07 05:15:12,456 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-07 05:15:12,456 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-07 05:15:12,456 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-07 05:15:12,456 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-07 05:15:12,457 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-07 05:15:12,457 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-07 05:15:12,457 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-07 05:15:12,457 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-07 05:15:12,457 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-07 05:15:12,457 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-07 05:15:12,458 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-07 05:15:12,458 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-07 05:15:12,458 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-07 05:15:12,458 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-07 05:15:12,458 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-07 05:15:12,458 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-07 05:15:12,459 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-07 05:15:12,459 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-07 05:15:12,459 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-07 05:15:12,459 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-07 05:15:12,459 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-07 05:15:12,459 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-07 05:15:12,460 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-07 05:15:12,460 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-07 05:15:12,460 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-07 05:15:12,460 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-07 05:15:12,460 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-07 05:15:12,460 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-07 05:15:12,461 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-07 05:15:12,461 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-07 05:15:12,461 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-07 05:15:12,461 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-07 05:15:12,461 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-07 05:15:12,461 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-07 05:15:12,462 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-07 05:15:12,462 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-07 05:15:12,462 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-07 05:15:12,462 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-07 05:15:12,462 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-07 05:15:12,462 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-07 05:15:12,463 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-07 05:15:12,463 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-07 05:15:12,463 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-07 05:15:12,463 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-07 05:15:12,463 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-07 05:15:12,463 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-07 05:15:12,463 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-07 05:15:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-11-07 05:15:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 05:15:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 05:15:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 05:15:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-07 05:15:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-07 05:15:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 05:15:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 05:15:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 05:15:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 05:15:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 05:15:12,817 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-11-07 05:15:13,000 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 05:15:13,001 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-07 05:15:13,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:15:13 BoogieIcfgContainer [2020-11-07 05:15:13,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 05:15:13,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 05:15:13,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 05:15:13,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 05:15:13,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:15:11" (1/3) ... [2020-11-07 05:15:13,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@88ce73b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:15:13, skipping insertion in model container [2020-11-07 05:15:13,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:12" (2/3) ... [2020-11-07 05:15:13,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@88ce73b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:15:13, skipping insertion in model container [2020-11-07 05:15:13,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:15:13" (3/3) ... [2020-11-07 05:15:13,011 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-1.i [2020-11-07 05:15:13,026 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 05:15:13,030 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 05:15:13,042 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 05:15:13,066 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 05:15:13,066 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 05:15:13,066 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 05:15:13,066 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 05:15:13,066 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 05:15:13,066 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 05:15:13,067 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 05:15:13,067 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 05:15:13,082 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2020-11-07 05:15:13,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-07 05:15:13,092 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:15:13,092 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] [2020-11-07 05:15:13,093 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:15:13,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:15:13,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1477386638, now seen corresponding path program 1 times [2020-11-07 05:15:13,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:15:13,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122286984] [2020-11-07 05:15:13,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:15:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:13,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:15:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:13,418 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 05:15:13,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122286984] [2020-11-07 05:15:13,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:15:13,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 05:15:13,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183883790] [2020-11-07 05:15:13,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 05:15:13,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:15:13,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 05:15:13,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 05:15:13,446 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 3 states. [2020-11-07 05:15:13,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:15:13,581 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2020-11-07 05:15:13,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 05:15:13,583 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-11-07 05:15:13,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:15:13,591 INFO L225 Difference]: With dead ends: 77 [2020-11-07 05:15:13,591 INFO L226 Difference]: Without dead ends: 44 [2020-11-07 05:15:13,594 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 05:15:13,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-07 05:15:13,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-11-07 05:15:13,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-07 05:15:13,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-11-07 05:15:13,639 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 28 [2020-11-07 05:15:13,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:15:13,640 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-11-07 05:15:13,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 05:15:13,640 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-11-07 05:15:13,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-07 05:15:13,642 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:15:13,642 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] [2020-11-07 05:15:13,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 05:15:13,642 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:15:13,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:15:13,644 INFO L82 PathProgramCache]: Analyzing trace with hash -293697380, now seen corresponding path program 1 times [2020-11-07 05:15:13,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:15:13,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [579679383] [2020-11-07 05:15:13,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:15:13,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:13,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:15:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:13,835 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 05:15:13,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [579679383] [2020-11-07 05:15:13,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:15:13,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 05:15:13,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241200635] [2020-11-07 05:15:13,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 05:15:13,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:15:13,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 05:15:13,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:15:13,840 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 8 states. [2020-11-07 05:15:14,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:15:14,071 INFO L93 Difference]: Finished difference Result 86 states and 90 transitions. [2020-11-07 05:15:14,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-07 05:15:14,071 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-11-07 05:15:14,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:15:14,075 INFO L225 Difference]: With dead ends: 86 [2020-11-07 05:15:14,075 INFO L226 Difference]: Without dead ends: 81 [2020-11-07 05:15:14,076 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 [2020-11-07 05:15:14,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-11-07 05:15:14,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 53. [2020-11-07 05:15:14,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-07 05:15:14,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-11-07 05:15:14,091 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 30 [2020-11-07 05:15:14,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:15:14,092 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-11-07 05:15:14,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 05:15:14,092 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-11-07 05:15:14,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-07 05:15:14,093 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:15:14,094 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] [2020-11-07 05:15:14,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 05:15:14,094 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:15:14,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:15:14,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1136768431, now seen corresponding path program 1 times [2020-11-07 05:15:14,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:15:14,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437633299] [2020-11-07 05:15:14,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:15:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:14,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:15:14,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:14,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:15:14,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437633299] [2020-11-07 05:15:14,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:15:14,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-07 05:15:14,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240660639] [2020-11-07 05:15:14,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 05:15:14,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:15:14,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 05:15:14,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:15:14,378 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 10 states. [2020-11-07 05:15:14,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:15:14,791 INFO L93 Difference]: Finished difference Result 86 states and 89 transitions. [2020-11-07 05:15:14,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-07 05:15:14,791 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2020-11-07 05:15:14,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:15:14,793 INFO L225 Difference]: With dead ends: 86 [2020-11-07 05:15:14,793 INFO L226 Difference]: Without dead ends: 62 [2020-11-07 05:15:14,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-11-07 05:15:14,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-07 05:15:14,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 46. [2020-11-07 05:15:14,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-07 05:15:14,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-11-07 05:15:14,815 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 37 [2020-11-07 05:15:14,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:15:14,815 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-11-07 05:15:14,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 05:15:14,816 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-11-07 05:15:14,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-07 05:15:14,820 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:15:14,820 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] [2020-11-07 05:15:14,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 05:15:14,821 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:15:14,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:15:14,821 INFO L82 PathProgramCache]: Analyzing trace with hash 971250021, now seen corresponding path program 1 times [2020-11-07 05:15:14,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:15:14,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27235198] [2020-11-07 05:15:14,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:15:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 05:15:14,881 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 05:15:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 05:15:14,904 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 05:15:14,942 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 05:15:14,942 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 05:15:14,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 05:15:15,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 05:15:15 BoogieIcfgContainer [2020-11-07 05:15:15,015 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 05:15:15,019 INFO L168 Benchmark]: Toolchain (without parser) took 3370.15 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 133.3 MB in the beginning and 119.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 46.3 MB. Max. memory is 8.0 GB. [2020-11-07 05:15:15,020 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory is still 99.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 05:15:15,022 INFO L168 Benchmark]: CACSL2BoogieTranslator took 612.45 ms. Allocated memory is still 158.3 MB. Free memory was 132.7 MB in the beginning and 136.7 MB in the end (delta: -4.1 MB). Peak memory consumption was 22.2 MB. Max. memory is 8.0 GB. [2020-11-07 05:15:15,023 INFO L168 Benchmark]: Boogie Preprocessor took 90.78 ms. Allocated memory is still 158.3 MB. Free memory was 136.7 MB in the beginning and 134.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 05:15:15,025 INFO L168 Benchmark]: RCFGBuilder took 638.56 ms. Allocated memory is still 158.3 MB. Free memory was 134.4 MB in the beginning and 129.5 MB in the end (delta: 4.9 MB). Peak memory consumption was 36.4 MB. Max. memory is 8.0 GB. [2020-11-07 05:15:15,026 INFO L168 Benchmark]: TraceAbstraction took 2010.47 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 129.5 MB in the beginning and 119.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 42.3 MB. Max. memory is 8.0 GB. [2020-11-07 05:15:15,035 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 is still 99.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 612.45 ms. Allocated memory is still 158.3 MB. Free memory was 132.7 MB in the beginning and 136.7 MB in the end (delta: -4.1 MB). Peak memory consumption was 22.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 90.78 ms. Allocated memory is still 158.3 MB. Free memory was 136.7 MB in the beginning and 134.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 638.56 ms. Allocated memory is still 158.3 MB. Free memory was 134.4 MB in the beginning and 129.5 MB in the end (delta: 4.9 MB). Peak memory consumption was 36.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2010.47 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 129.5 MB in the beginning and 119.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 42.3 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))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, t={-2:0}] [L540] COND FALSE !(t == 0) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, t={-2:0}] [L541] p->n = t VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, t={-2:0}] [L542] EXPR p->n VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, p->n={-2:0}, t={-2:0}] [L542] p = p->n VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, 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))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, t={-2:0}] [L544] p->h = 2 VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, t={-2:0}] [L545] p->n = 0 VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, t={-2:0}] [L546] p = a VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, t={-2:0}] [L547] COND TRUE p!=0 VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, t={-2:0}] [L548] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, p->h=1, t={-2:0}] [L548] COND TRUE p->h != 2 VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, 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: 1.8s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.8s, 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, 0.3s 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, 0.4s 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...