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/heap-manipulation/dancing.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:45:22,710 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:45:22,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:45:22,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 01:45:22,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 01:45:22,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 01:45:22,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 01:45:22,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 01:45:22,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 01:45:22,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 01:45:22,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 01:45:22,733 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 01:45:22,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:45:22,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:45:22,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:45:22,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:45:22,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:45:22,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:45:22,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:45:22,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:45:22,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:45:22,744 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:45:22,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:45:22,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:45:22,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-10 01:45:22,748 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-10 01:45:22,748 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-10 01:45:22,749 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-10 01:45:22,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-10 01:45:22,751 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-10 01:45:22,751 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:45:22,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:45:22,752 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:45:22,753 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:45:22,754 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:45:22,754 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:45:22,755 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:45:22,755 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:45:22,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:45:22,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:45:22,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:45:22,758 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 [2019-09-10 01:45:22,772 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:45:22,773 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:45:22,773 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:45:22,773 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:45:22,774 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:45:22,774 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:45:22,774 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:45:22,775 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:45:22,775 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:45:22,775 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:45:22,776 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:45:22,776 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:45:22,776 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:45:22,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:45:22,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:45:22,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:45:22,777 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:45:22,777 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:45:22,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:45:22,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:45:22,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:45:22,778 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:45:22,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:45:22,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:45:22,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:45:22,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:45:22,779 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:45:22,779 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:45:22,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:45:22,779 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:45:22,808 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:45:22,821 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:45:22,825 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:45:22,826 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:45:22,826 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:45:22,827 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dancing.i [2019-09-10 01:45:22,900 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83fdf66c6/6ca4abcb59fe477c88b6cd2f1490af00/FLAG7140fbcd0 [2019-09-10 01:45:23,474 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:45:23,475 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/dancing.i [2019-09-10 01:45:23,494 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83fdf66c6/6ca4abcb59fe477c88b6cd2f1490af00/FLAG7140fbcd0 [2019-09-10 01:45:23,725 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83fdf66c6/6ca4abcb59fe477c88b6cd2f1490af00 [2019-09-10 01:45:23,734 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:45:23,736 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:45:23,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:45:23,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:45:23,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:45:23,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:45:23" (1/1) ... [2019-09-10 01:45:23,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6775c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:23, skipping insertion in model container [2019-09-10 01:45:23,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:45:23" (1/1) ... [2019-09-10 01:45:23,753 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:45:23,791 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:45:24,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:45:24,247 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:45:24,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:45:24,343 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:45:24,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:24 WrapperNode [2019-09-10 01:45:24,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:45:24,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:45:24,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:45:24,345 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:45:24,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:24" (1/1) ... [2019-09-10 01:45:24,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:24" (1/1) ... [2019-09-10 01:45:24,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:24" (1/1) ... [2019-09-10 01:45:24,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:24" (1/1) ... [2019-09-10 01:45:24,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:24" (1/1) ... [2019-09-10 01:45:24,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:24" (1/1) ... [2019-09-10 01:45:24,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:24" (1/1) ... [2019-09-10 01:45:24,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:45:24,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:45:24,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:45:24,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:45:24,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:24" (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 [2019-09-10 01:45:24,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:45:24,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:45:24,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-10 01:45:24,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-10 01:45:24,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-10 01:45:24,480 INFO L138 BoogieDeclarations]: Found implementation of procedure remove [2019-09-10 01:45:24,480 INFO L138 BoogieDeclarations]: Found implementation of procedure re_insert [2019-09-10 01:45:24,480 INFO L138 BoogieDeclarations]: Found implementation of procedure is_list_containing_x [2019-09-10 01:45:24,480 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:45:24,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-10 01:45:24,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-10 01:45:24,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:45:24,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-10 01:45:24,481 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-10 01:45:24,481 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-10 01:45:24,482 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-10 01:45:24,482 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-10 01:45:24,482 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-10 01:45:24,482 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-10 01:45:24,482 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-10 01:45:24,482 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-10 01:45:24,483 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-10 01:45:24,483 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-10 01:45:24,483 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-10 01:45:24,483 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-10 01:45:24,483 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-10 01:45:24,483 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-10 01:45:24,484 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-10 01:45:24,484 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-10 01:45:24,484 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-10 01:45:24,484 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-10 01:45:24,484 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-10 01:45:24,484 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-10 01:45:24,485 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-10 01:45:24,485 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-10 01:45:24,485 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-10 01:45:24,485 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-10 01:45:24,485 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-10 01:45:24,485 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-10 01:45:24,486 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-10 01:45:24,486 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-10 01:45:24,486 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-10 01:45:24,486 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-10 01:45:24,486 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-10 01:45:24,486 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-10 01:45:24,486 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-10 01:45:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-10 01:45:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-10 01:45:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-10 01:45:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-10 01:45:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-10 01:45:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-10 01:45:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-10 01:45:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-10 01:45:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-10 01:45:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-10 01:45:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-10 01:45:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-10 01:45:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-10 01:45:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-10 01:45:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-10 01:45:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-10 01:45:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-10 01:45:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-10 01:45:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-10 01:45:24,490 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-10 01:45:24,490 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-10 01:45:24,490 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-10 01:45:24,490 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-10 01:45:24,490 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-10 01:45:24,490 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-10 01:45:24,490 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-10 01:45:24,491 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-10 01:45:24,491 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-10 01:45:24,491 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-10 01:45:24,491 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-10 01:45:24,491 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-10 01:45:24,492 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-10 01:45:24,492 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-10 01:45:24,492 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-10 01:45:24,492 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-10 01:45:24,492 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-10 01:45:24,492 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-10 01:45:24,492 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-10 01:45:24,493 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-10 01:45:24,493 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-10 01:45:24,493 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-10 01:45:24,493 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-10 01:45:24,493 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-10 01:45:24,493 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-10 01:45:24,494 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-10 01:45:24,494 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-10 01:45:24,494 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-10 01:45:24,494 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-10 01:45:24,494 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-10 01:45:24,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-10 01:45:24,495 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-10 01:45:24,495 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-10 01:45:24,495 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-10 01:45:24,495 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-10 01:45:24,495 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-10 01:45:24,495 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-10 01:45:24,495 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-10 01:45:24,496 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-10 01:45:24,496 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-10 01:45:24,496 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-10 01:45:24,496 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-10 01:45:24,496 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-10 01:45:24,496 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-10 01:45:24,496 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-10 01:45:24,497 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-10 01:45:24,497 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-10 01:45:24,497 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-10 01:45:24,497 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-10 01:45:24,497 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-10 01:45:24,497 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2019-09-10 01:45:24,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-10 01:45:24,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-10 01:45:24,498 INFO L130 BoogieDeclarations]: Found specification of procedure re_insert [2019-09-10 01:45:24,498 INFO L130 BoogieDeclarations]: Found specification of procedure is_list_containing_x [2019-09-10 01:45:24,498 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:45:24,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 01:45:24,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-10 01:45:24,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:45:24,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:45:24,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:45:25,049 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:45:25,049 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-10 01:45:25,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:45:25 BoogieIcfgContainer [2019-09-10 01:45:25,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:45:25,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:45:25,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:45:25,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:45:25,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:45:23" (1/3) ... [2019-09-10 01:45:25,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dae461 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:45:25, skipping insertion in model container [2019-09-10 01:45:25,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:24" (2/3) ... [2019-09-10 01:45:25,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dae461 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:45:25, skipping insertion in model container [2019-09-10 01:45:25,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:45:25" (3/3) ... [2019-09-10 01:45:25,059 INFO L109 eAbstractionObserver]: Analyzing ICFG dancing.i [2019-09-10 01:45:25,068 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:45:25,077 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:45:25,093 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:45:25,121 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:45:25,122 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:45:25,122 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:45:25,122 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:45:25,122 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:45:25,123 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:45:25,123 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:45:25,123 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:45:25,138 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2019-09-10 01:45:25,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-09-10 01:45:25,150 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:45:25,151 INFO L399 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] [2019-09-10 01:45:25,153 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:45:25,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:45:25,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1288835784, now seen corresponding path program 1 times [2019-09-10 01:45:25,162 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:45:25,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:25,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:45:25,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:25,216 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:45:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:45:25,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:45:25,320 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:45:25,320 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 01:45:25,321 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:45:25,327 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:45:25,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:45:25,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:45:25,355 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 2 states. [2019-09-10 01:45:25,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:45:25,380 INFO L93 Difference]: Finished difference Result 51 states and 64 transitions. [2019-09-10 01:45:25,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:45:25,382 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2019-09-10 01:45:25,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:45:25,392 INFO L225 Difference]: With dead ends: 51 [2019-09-10 01:45:25,393 INFO L226 Difference]: Without dead ends: 46 [2019-09-10 01:45:25,395 INFO L628 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 [2019-09-10 01:45:25,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-09-10 01:45:25,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2019-09-10 01:45:25,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-09-10 01:45:25,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 59 transitions. [2019-09-10 01:45:25,442 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 59 transitions. Word has length 26 [2019-09-10 01:45:25,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:45:25,443 INFO L475 AbstractCegarLoop]: Abstraction has 46 states and 59 transitions. [2019-09-10 01:45:25,443 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:45:25,443 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 59 transitions. [2019-09-10 01:45:25,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-09-10 01:45:25,445 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:45:25,446 INFO L399 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] [2019-09-10 01:45:25,446 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:45:25,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:45:25,447 INFO L82 PathProgramCache]: Analyzing trace with hash 548560295, now seen corresponding path program 1 times [2019-09-10 01:45:25,447 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:45:25,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:25,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:45:25,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:25,450 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:45:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:45:25,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:45:25,581 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:45:25,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 01:45:25,582 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:45:25,585 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 01:45:25,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 01:45:25,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 01:45:25,586 INFO L87 Difference]: Start difference. First operand 46 states and 59 transitions. Second operand 5 states. [2019-09-10 01:45:25,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:45:25,656 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2019-09-10 01:45:25,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 01:45:25,658 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2019-09-10 01:45:25,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:45:25,662 INFO L225 Difference]: With dead ends: 52 [2019-09-10 01:45:25,662 INFO L226 Difference]: Without dead ends: 52 [2019-09-10 01:45:25,663 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-10 01:45:25,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-09-10 01:45:25,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2019-09-10 01:45:25,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-09-10 01:45:25,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2019-09-10 01:45:25,683 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 26 [2019-09-10 01:45:25,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:45:25,690 INFO L475 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2019-09-10 01:45:25,690 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 01:45:25,691 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2019-09-10 01:45:25,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-09-10 01:45:25,693 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:45:25,693 INFO L399 BasicCegarLoop]: trace histogram [2, 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] [2019-09-10 01:45:25,694 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:45:25,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:45:25,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1853385248, now seen corresponding path program 1 times [2019-09-10 01:45:25,694 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:45:25,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:25,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:45:25,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:25,696 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:45:25,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:45:25,808 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-10 01:45:25,825 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:45:25,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-10 01:45:25,826 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:45:25,826 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 01:45:25,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 01:45:25,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 01:45:25,829 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand 4 states. [2019-09-10 01:45:25,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:45:25,886 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2019-09-10 01:45:25,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 01:45:25,888 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2019-09-10 01:45:25,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:45:25,890 INFO L225 Difference]: With dead ends: 65 [2019-09-10 01:45:25,890 INFO L226 Difference]: Without dead ends: 65 [2019-09-10 01:45:25,891 INFO L628 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 [2019-09-10 01:45:25,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-09-10 01:45:25,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2019-09-10 01:45:25,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-09-10 01:45:25,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 77 transitions. [2019-09-10 01:45:25,901 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 77 transitions. Word has length 32 [2019-09-10 01:45:25,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:45:25,901 INFO L475 AbstractCegarLoop]: Abstraction has 59 states and 77 transitions. [2019-09-10 01:45:25,901 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 01:45:25,901 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 77 transitions. [2019-09-10 01:45:25,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-09-10 01:45:25,903 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:45:25,903 INFO L399 BasicCegarLoop]: trace histogram [2, 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] [2019-09-10 01:45:25,903 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:45:25,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:45:25,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1477297738, now seen corresponding path program 1 times [2019-09-10 01:45:25,904 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:45:25,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:25,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:45:25,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:25,906 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:45:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:45:25,987 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-10 01:45:25,987 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:45:25,987 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 01:45:25,989 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 36 with the following transitions: [2019-09-10 01:45:25,991 INFO L207 CegarAbsIntRunner]: [2], [5], [13], [14], [17], [19], [25], [26], [42], [49], [51], [56], [59], [67], [69], [74], [76], [87], [90], [94], [97], [101], [107], [108], [109], [110], [111], [112], [113], [121], [122], [123] [2019-09-10 01:45:26,029 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 01:45:26,030 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 01:45:26,089 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 01:45:26,091 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 17 root evaluator evaluations with a maximum evaluation depth of 0. Performed 17 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 29 variables. [2019-09-10 01:45:26,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:45:26,095 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 01:45:26,135 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-10 01:45:26,135 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 01:45:26,137 INFO L420 sIntCurrentIteration]: We unified 34 AI predicates to 34 [2019-09-10 01:45:26,137 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 01:45:26,138 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 01:45:26,138 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 7 [2019-09-10 01:45:26,139 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:45:26,139 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:45:26,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:45:26,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:45:26,140 INFO L87 Difference]: Start difference. First operand 59 states and 77 transitions. Second operand 2 states. [2019-09-10 01:45:26,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:45:26,140 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-10 01:45:26,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:45:26,141 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 35 [2019-09-10 01:45:26,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:45:26,141 INFO L225 Difference]: With dead ends: 6 [2019-09-10 01:45:26,141 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 01:45:26,142 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:45:26,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 01:45:26,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 01:45:26,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 01:45:26,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 01:45:26,142 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2019-09-10 01:45:26,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:45:26,142 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 01:45:26,143 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:45:26,143 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 01:45:26,143 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 01:45:26,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:45:26 BoogieIcfgContainer [2019-09-10 01:45:26,147 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:45:26,150 INFO L168 Benchmark]: Toolchain (without parser) took 2412.79 ms. Allocated memory was 131.6 MB in the beginning and 221.2 MB in the end (delta: 89.7 MB). Free memory was 86.1 MB in the beginning and 162.0 MB in the end (delta: -75.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2019-09-10 01:45:26,151 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 131.6 MB. Free memory was 106.0 MB in the beginning and 105.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 01:45:26,152 INFO L168 Benchmark]: CACSL2BoogieTranslator took 607.18 ms. Allocated memory was 131.6 MB in the beginning and 199.2 MB in the end (delta: 67.6 MB). Free memory was 85.9 MB in the beginning and 163.7 MB in the end (delta: -77.8 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. [2019-09-10 01:45:26,153 INFO L168 Benchmark]: Boogie Preprocessor took 65.05 ms. Allocated memory is still 199.2 MB. Free memory was 163.7 MB in the beginning and 160.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2019-09-10 01:45:26,153 INFO L168 Benchmark]: RCFGBuilder took 640.39 ms. Allocated memory is still 199.2 MB. Free memory was 160.3 MB in the beginning and 114.9 MB in the end (delta: 45.4 MB). Peak memory consumption was 45.4 MB. Max. memory is 7.1 GB. [2019-09-10 01:45:26,154 INFO L168 Benchmark]: TraceAbstraction took 1095.68 ms. Allocated memory was 199.2 MB in the beginning and 221.2 MB in the end (delta: 22.0 MB). Free memory was 114.3 MB in the beginning and 162.0 MB in the end (delta: -47.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-10 01:45:26,159 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 131.6 MB. Free memory was 106.0 MB in the beginning and 105.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 607.18 ms. Allocated memory was 131.6 MB in the beginning and 199.2 MB in the end (delta: 67.6 MB). Free memory was 85.9 MB in the beginning and 163.7 MB in the end (delta: -77.8 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.05 ms. Allocated memory is still 199.2 MB. Free memory was 163.7 MB in the beginning and 160.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 640.39 ms. Allocated memory is still 199.2 MB. Free memory was 160.3 MB in the beginning and 114.9 MB in the end (delta: 45.4 MB). Peak memory consumption was 45.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1095.68 ms. Allocated memory was 199.2 MB in the beginning and 221.2 MB in the end (delta: 22.0 MB). Free memory was 114.3 MB in the beginning and 162.0 MB in the end (delta: -47.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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, 57 locations, 1 error locations. SAFE Result, 1.0s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 189 SDtfs, 14 SDslu, 278 SDs, 0 SdLazy, 24 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=3, 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, 0.9558823529411765 AbsIntWeakeningRatio, 1.588235294117647 AbsIntAvgWeakeningVarsNumRemoved, 0.17647058823529413 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 5331 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 5/9 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...