java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/list-properties/splice-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:28:17,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:28:17,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:28:17,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:28:17,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:28:17,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:28:17,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:28:17,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:28:17,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:28:17,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:28:17,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:28:17,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:28:17,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:28:17,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:28:17,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:28:17,623 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:28:17,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:28:17,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:28:17,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:28:17,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:28:17,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:28:17,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:28:17,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:28:17,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:28:17,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:28:17,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:28:17,646 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:28:17,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:28:17,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:28:17,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:28:17,648 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:28:17,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:28:17,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:28:17,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:28:17,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:28:17,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:28:17,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:28:17,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:28:17,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:28:17,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:28:17,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:28:17,656 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-20 13:28:17,674 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:28:17,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:28:17,674 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:28:17,675 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:28:17,675 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:28:17,675 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:28:17,676 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:28:17,676 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:28:17,676 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:28:17,676 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:28:17,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:28:17,677 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:28:17,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:28:17,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:28:17,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:28:17,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:28:17,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:28:17,679 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:28:17,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:28:17,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:28:17,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:28:17,680 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:28:17,680 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:28:17,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:28:17,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:28:17,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:28:17,681 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:28:17,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:28:17,681 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:28:17,681 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:28:17,710 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:28:17,727 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:28:17,731 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:28:17,732 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:28:17,733 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:28:17,734 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/splice-2.i [2019-09-20 13:28:17,807 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d8eb6872/b088f9fbd5cf4f00a8495599c28c7830/FLAG56dcb31b3 [2019-09-20 13:28:18,288 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:28:18,289 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/splice-2.i [2019-09-20 13:28:18,306 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d8eb6872/b088f9fbd5cf4f00a8495599c28c7830/FLAG56dcb31b3 [2019-09-20 13:28:18,609 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d8eb6872/b088f9fbd5cf4f00a8495599c28c7830 [2019-09-20 13:28:18,618 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:28:18,620 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:28:18,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:28:18,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:28:18,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:28:18,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:28:18" (1/1) ... [2019-09-20 13:28:18,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24847820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:18, skipping insertion in model container [2019-09-20 13:28:18,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:28:18" (1/1) ... [2019-09-20 13:28:18,640 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:28:18,696 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:28:19,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:28:19,134 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:28:19,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:28:19,255 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:28:19,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:19 WrapperNode [2019-09-20 13:28:19,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:28:19,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:28:19,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:28:19,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:28:19,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:19" (1/1) ... [2019-09-20 13:28:19,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:19" (1/1) ... [2019-09-20 13:28:19,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:19" (1/1) ... [2019-09-20 13:28:19,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:19" (1/1) ... [2019-09-20 13:28:19,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:19" (1/1) ... [2019-09-20 13:28:19,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:19" (1/1) ... [2019-09-20 13:28:19,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:19" (1/1) ... [2019-09-20 13:28:19,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:28:19,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:28:19,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:28:19,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:28:19,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:19" (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 [2019-09-20 13:28:19,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:28:19,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:28:19,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-20 13:28:19,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-20 13:28:19,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-09-20 13:28:19,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-09-20 13:28:19,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-09-20 13:28:19,387 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-09-20 13:28:19,387 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:28:19,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:28:19,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:28:19,387 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-20 13:28:19,388 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-20 13:28:19,388 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-20 13:28:19,388 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-20 13:28:19,388 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-20 13:28:19,388 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-20 13:28:19,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-20 13:28:19,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-20 13:28:19,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-20 13:28:19,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-20 13:28:19,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-20 13:28:19,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-20 13:28:19,390 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-20 13:28:19,390 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-20 13:28:19,390 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-20 13:28:19,390 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-20 13:28:19,390 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-20 13:28:19,390 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-20 13:28:19,390 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-09-20 13:28:19,391 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-09-20 13:28:19,391 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-09-20 13:28:19,391 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-20 13:28:19,391 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-20 13:28:19,391 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-20 13:28:19,391 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-20 13:28:19,392 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-20 13:28:19,392 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-20 13:28:19,392 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-20 13:28:19,392 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-20 13:28:19,392 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-20 13:28:19,392 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-20 13:28:19,392 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-20 13:28:19,393 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-20 13:28:19,393 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-20 13:28:19,393 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-20 13:28:19,393 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-20 13:28:19,393 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-20 13:28:19,393 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-20 13:28:19,394 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-20 13:28:19,394 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-20 13:28:19,394 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-20 13:28:19,394 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-20 13:28:19,394 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-20 13:28:19,395 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-20 13:28:19,395 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-20 13:28:19,395 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-20 13:28:19,395 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-20 13:28:19,395 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-20 13:28:19,395 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-20 13:28:19,395 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-20 13:28:19,396 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-20 13:28:19,396 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-20 13:28:19,396 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-20 13:28:19,396 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-20 13:28:19,396 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-20 13:28:19,396 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:28:19,397 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-20 13:28:19,397 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-20 13:28:19,397 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:28:19,397 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-20 13:28:19,397 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-20 13:28:19,397 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-20 13:28:19,398 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-20 13:28:19,398 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-20 13:28:19,398 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-20 13:28:19,398 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-20 13:28:19,398 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-20 13:28:19,398 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-20 13:28:19,399 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-20 13:28:19,399 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-20 13:28:19,399 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-20 13:28:19,399 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-20 13:28:19,399 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-20 13:28:19,399 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-20 13:28:19,399 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-20 13:28:19,400 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-20 13:28:19,400 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-20 13:28:19,400 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-20 13:28:19,400 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-20 13:28:19,400 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-20 13:28:19,400 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-20 13:28:19,401 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-20 13:28:19,401 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-20 13:28:19,401 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-20 13:28:19,401 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-20 13:28:19,401 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-20 13:28:19,401 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-20 13:28:19,402 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-20 13:28:19,402 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-20 13:28:19,402 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-20 13:28:19,402 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-20 13:28:19,402 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-20 13:28:19,402 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-20 13:28:19,402 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-20 13:28:19,403 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-20 13:28:19,403 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-20 13:28:19,403 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-20 13:28:19,403 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-20 13:28:19,403 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-20 13:28:19,403 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-20 13:28:19,403 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-20 13:28:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-20 13:28:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-20 13:28:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-20 13:28:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-20 13:28:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-20 13:28:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-20 13:28:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-09-20 13:28:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:28:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:28:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:28:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:28:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:28:19,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:28:19,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:28:19,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:28:19,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:28:19,796 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-09-20 13:28:20,003 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:28:20,004 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-09-20 13:28:20,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:28:20 BoogieIcfgContainer [2019-09-20 13:28:20,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:28:20,007 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:28:20,007 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:28:20,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:28:20,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:28:18" (1/3) ... [2019-09-20 13:28:20,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db55056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:28:20, skipping insertion in model container [2019-09-20 13:28:20,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:19" (2/3) ... [2019-09-20 13:28:20,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db55056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:28:20, skipping insertion in model container [2019-09-20 13:28:20,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:28:20" (3/3) ... [2019-09-20 13:28:20,014 INFO L109 eAbstractionObserver]: Analyzing ICFG splice-2.i [2019-09-20 13:28:20,026 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:28:20,038 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:28:20,055 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:28:20,078 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:28:20,078 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:28:20,079 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:28:20,079 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:28:20,079 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:28:20,079 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:28:20,079 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:28:20,080 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:28:20,092 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-09-20 13:28:20,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-20 13:28:20,103 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:20,104 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:28:20,106 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:20,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:20,113 INFO L82 PathProgramCache]: Analyzing trace with hash 661731879, now seen corresponding path program 1 times [2019-09-20 13:28:20,115 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:20,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:20,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:20,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:20,182 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:20,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:28:20,271 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:28:20,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:28:20,272 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:20,278 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:28:20,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:28:20,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:28:20,293 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2019-09-20 13:28:20,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:20,310 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2019-09-20 13:28:20,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:28:20,311 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-09-20 13:28:20,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:20,318 INFO L225 Difference]: With dead ends: 36 [2019-09-20 13:28:20,318 INFO L226 Difference]: Without dead ends: 27 [2019-09-20 13:28:20,320 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:28:20,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-09-20 13:28:20,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-09-20 13:28:20,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-09-20 13:28:20,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2019-09-20 13:28:20,357 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 16 [2019-09-20 13:28:20,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:20,358 INFO L475 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2019-09-20 13:28:20,358 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:28:20,358 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2019-09-20 13:28:20,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-20 13:28:20,359 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:20,359 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:28:20,360 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:20,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:20,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1973627133, now seen corresponding path program 1 times [2019-09-20 13:28:20,361 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:20,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:20,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:20,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:20,366 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:20,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:28:20,513 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:28:20,513 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:28:20,513 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:20,519 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:28:20,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:28:20,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:28:20,520 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand 4 states. [2019-09-20 13:28:20,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:20,608 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2019-09-20 13:28:20,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:28:20,609 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-09-20 13:28:20,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:20,610 INFO L225 Difference]: With dead ends: 37 [2019-09-20 13:28:20,611 INFO L226 Difference]: Without dead ends: 37 [2019-09-20 13:28:20,612 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:28:20,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-09-20 13:28:20,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2019-09-20 13:28:20,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-09-20 13:28:20,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2019-09-20 13:28:20,619 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 18 [2019-09-20 13:28:20,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:20,619 INFO L475 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2019-09-20 13:28:20,619 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:28:20,619 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2019-09-20 13:28:20,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-20 13:28:20,620 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:20,621 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:28:20,621 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:20,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:20,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1721544590, now seen corresponding path program 1 times [2019-09-20 13:28:20,622 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:20,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:20,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:20,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:20,627 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:20,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:28:20,715 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:28:20,715 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:28:20,715 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:20,732 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:28:20,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:28:20,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:28:20,733 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand 4 states. [2019-09-20 13:28:20,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:20,805 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2019-09-20 13:28:20,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:28:20,807 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2019-09-20 13:28:20,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:20,810 INFO L225 Difference]: With dead ends: 47 [2019-09-20 13:28:20,810 INFO L226 Difference]: Without dead ends: 43 [2019-09-20 13:28:20,811 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:28:20,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-09-20 13:28:20,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2019-09-20 13:28:20,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-09-20 13:28:20,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 53 transitions. [2019-09-20 13:28:20,818 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 53 transitions. Word has length 20 [2019-09-20 13:28:20,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:20,818 INFO L475 AbstractCegarLoop]: Abstraction has 41 states and 53 transitions. [2019-09-20 13:28:20,818 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:28:20,819 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 53 transitions. [2019-09-20 13:28:20,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-09-20 13:28:20,820 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:20,820 INFO L407 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:28:20,820 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:20,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:20,820 INFO L82 PathProgramCache]: Analyzing trace with hash -918584693, now seen corresponding path program 1 times [2019-09-20 13:28:20,821 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:20,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:20,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:20,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:20,825 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:20,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:28:20,915 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:28:20,915 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:28:20,915 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:20,916 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:28:20,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:28:20,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:28:20,917 INFO L87 Difference]: Start difference. First operand 41 states and 53 transitions. Second operand 6 states. [2019-09-20 13:28:21,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:21,093 INFO L93 Difference]: Finished difference Result 51 states and 64 transitions. [2019-09-20 13:28:21,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:28:21,094 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2019-09-20 13:28:21,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:21,095 INFO L225 Difference]: With dead ends: 51 [2019-09-20 13:28:21,095 INFO L226 Difference]: Without dead ends: 47 [2019-09-20 13:28:21,096 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:28:21,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-09-20 13:28:21,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2019-09-20 13:28:21,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-09-20 13:28:21,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2019-09-20 13:28:21,105 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 21 [2019-09-20 13:28:21,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:21,105 INFO L475 AbstractCegarLoop]: Abstraction has 43 states and 55 transitions. [2019-09-20 13:28:21,106 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:28:21,106 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2019-09-20 13:28:21,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-09-20 13:28:21,109 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:21,109 INFO L407 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] [2019-09-20 13:28:21,110 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:21,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:21,110 INFO L82 PathProgramCache]: Analyzing trace with hash -743556192, now seen corresponding path program 1 times [2019-09-20 13:28:21,110 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:21,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:21,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:21,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:21,115 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:21,497 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:28:21,497 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:28:21,497 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:28:21,498 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 28 with the following transitions: [2019-09-20 13:28:21,500 INFO L207 CegarAbsIntRunner]: [11], [12], [13], [19], [21], [26], [29], [31], [34], [38], [44], [46], [50], [54], [59], [62], [64], [67], [74], [83], [86], [111], [125], [126], [127] [2019-09-20 13:28:21,537 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:28:21,537 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:28:21,608 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:28:21,609 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 20 root evaluator evaluations with a maximum evaluation depth of 0. Performed 20 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 43 variables. [2019-09-20 13:28:21,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:21,614 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:28:21,651 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-20 13:28:21,651 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:28:21,653 INFO L420 sIntCurrentIteration]: We unified 26 AI predicates to 26 [2019-09-20 13:28:21,653 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:28:21,654 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:28:21,654 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [13] total 13 [2019-09-20 13:28:21,654 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:21,654 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:28:21,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:28:21,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:28:21,655 INFO L87 Difference]: Start difference. First operand 43 states and 55 transitions. Second operand 2 states. [2019-09-20 13:28:21,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:21,656 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-20 13:28:21,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:28:21,656 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2019-09-20 13:28:21,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:21,657 INFO L225 Difference]: With dead ends: 6 [2019-09-20 13:28:21,657 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:28:21,657 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:28:21,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:28:21,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:28:21,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:28:21,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:28:21,658 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2019-09-20 13:28:21,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:21,658 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:28:21,659 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:28:21,659 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:28:21,659 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:28:21,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:28:21 BoogieIcfgContainer [2019-09-20 13:28:21,664 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:28:21,667 INFO L168 Benchmark]: Toolchain (without parser) took 3046.27 ms. Allocated memory was 131.1 MB in the beginning and 220.2 MB in the end (delta: 89.1 MB). Free memory was 85.2 MB in the beginning and 116.0 MB in the end (delta: -30.8 MB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:21,668 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 131.1 MB. Free memory was 105.2 MB in the beginning and 105.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:28:21,669 INFO L168 Benchmark]: CACSL2BoogieTranslator took 635.36 ms. Allocated memory was 131.1 MB in the beginning and 199.8 MB in the end (delta: 68.7 MB). Free memory was 85.0 MB in the beginning and 163.9 MB in the end (delta: -78.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:21,670 INFO L168 Benchmark]: Boogie Preprocessor took 67.33 ms. Allocated memory is still 199.8 MB. Free memory was 163.9 MB in the beginning and 160.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:21,671 INFO L168 Benchmark]: RCFGBuilder took 681.52 ms. Allocated memory is still 199.8 MB. Free memory was 160.7 MB in the beginning and 114.4 MB in the end (delta: 46.3 MB). Peak memory consumption was 46.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:21,672 INFO L168 Benchmark]: TraceAbstraction took 1657.70 ms. Allocated memory was 199.8 MB in the beginning and 220.2 MB in the end (delta: 20.4 MB). Free memory was 113.8 MB in the beginning and 116.0 MB in the end (delta: -2.3 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:21,676 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 131.1 MB. Free memory was 105.2 MB in the beginning and 105.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 635.36 ms. Allocated memory was 131.1 MB in the beginning and 199.8 MB in the end (delta: 68.7 MB). Free memory was 85.0 MB in the beginning and 163.9 MB in the end (delta: -78.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.33 ms. Allocated memory is still 199.8 MB. Free memory was 163.9 MB in the beginning and 160.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 681.52 ms. Allocated memory is still 199.8 MB. Free memory was 160.7 MB in the beginning and 114.4 MB in the end (delta: 46.3 MB). Peak memory consumption was 46.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1657.70 ms. Allocated memory was 199.8 MB in the beginning and 220.2 MB in the end (delta: 20.4 MB). Free memory was 113.8 MB in the beginning and 116.0 MB in the end (delta: -2.3 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 573]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 52 locations, 1 error locations. SAFE Result, 1.5s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 137 SDtfs, 26 SDslu, 168 SDs, 0 SdLazy, 101 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9519230769230769 AbsIntWeakeningRatio, 1.6153846153846154 AbsIntAvgWeakeningVarsNumRemoved, 0.23076923076923078 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 9819 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 2/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...