/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/list-properties/splice-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:33:23,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:33:23,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:33:23,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:33:23,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:33:23,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:33:23,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:33:23,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:33:23,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:33:23,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:33:23,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:33:23,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:33:23,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:33:23,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:33:23,617 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:33:23,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:33:23,619 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:33:23,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:33:23,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:33:23,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:33:23,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:33:23,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:33:23,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:33:23,644 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:33:23,647 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:33:23,648 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:33:23,648 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:33:23,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:33:23,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:33:23,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:33:23,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:33:23,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:33:23,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:33:23,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:33:23,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:33:23,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:33:23,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:33:23,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:33:23,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:33:23,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:33:23,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:33:23,660 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:33:23,673 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:33:23,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:33:23,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:33:23,676 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:33:23,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:33:23,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:33:23,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:33:23,677 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:33:23,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:33:23,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:33:23,677 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:33:23,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:33:23,678 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:33:23,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:33:23,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:33:23,679 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:33:23,679 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:33:23,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:33:23,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:33:23,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:33:23,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:33:23,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:33:23,680 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:33:24,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:33:24,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:33:24,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:33:24,126 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:33:24,127 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:33:24,128 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/splice-1.i [2020-10-23 20:33:24,205 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3850a9c5d/d30212355de84dc19c58d99f14a3ed5f/FLAG9ec8ecace [2020-10-23 20:33:24,903 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:33:24,904 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/splice-1.i [2020-10-23 20:33:24,917 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3850a9c5d/d30212355de84dc19c58d99f14a3ed5f/FLAG9ec8ecace [2020-10-23 20:33:25,202 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3850a9c5d/d30212355de84dc19c58d99f14a3ed5f [2020-10-23 20:33:25,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:33:25,219 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:33:25,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:33:25,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:33:25,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:33:25,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:33:25" (1/1) ... [2020-10-23 20:33:25,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f8121ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:25, skipping insertion in model container [2020-10-23 20:33:25,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:33:25" (1/1) ... [2020-10-23 20:33:25,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:33:25,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:33:25,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:33:25,579 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:33:25,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:33:25,701 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:33:25,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:25 WrapperNode [2020-10-23 20:33:25,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:33:25,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:33:25,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:33:25,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:33:25,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:25" (1/1) ... [2020-10-23 20:33:25,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:25" (1/1) ... [2020-10-23 20:33:25,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:25" (1/1) ... [2020-10-23 20:33:25,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:25" (1/1) ... [2020-10-23 20:33:25,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:25" (1/1) ... [2020-10-23 20:33:25,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:25" (1/1) ... [2020-10-23 20:33:25,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:25" (1/1) ... [2020-10-23 20:33:25,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:33:25,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:33:25,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:33:25,773 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:33:25,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:33:25,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:33:25,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:33:25,884 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:33:25,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-23 20:33:25,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-23 20:33:25,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-23 20:33:25,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-23 20:33:25,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-23 20:33:25,885 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-23 20:33:25,886 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:33:25,886 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:33:25,886 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:33:25,886 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 20:33:25,886 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 20:33:25,886 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:33:25,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:33:25,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:33:25,887 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-23 20:33:25,887 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-23 20:33:25,887 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-23 20:33:25,888 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-23 20:33:25,888 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-23 20:33:25,888 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-23 20:33:25,888 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-23 20:33:25,888 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-23 20:33:25,888 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-23 20:33:25,889 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-23 20:33:25,889 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-23 20:33:25,889 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-23 20:33:25,889 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-23 20:33:25,889 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-23 20:33:25,889 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-23 20:33:25,890 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-23 20:33:25,890 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-23 20:33:25,890 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-23 20:33:25,890 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-23 20:33:25,890 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-23 20:33:25,890 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-23 20:33:25,891 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-23 20:33:25,891 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-23 20:33:25,891 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-23 20:33:25,891 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-23 20:33:25,891 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-23 20:33:25,891 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-23 20:33:25,891 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-23 20:33:25,892 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-23 20:33:25,892 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-23 20:33:25,892 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-23 20:33:25,892 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-23 20:33:25,892 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-23 20:33:25,892 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-23 20:33:25,892 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-23 20:33:25,893 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-23 20:33:25,893 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-23 20:33:25,893 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-23 20:33:25,893 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-23 20:33:25,893 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-23 20:33:25,893 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-23 20:33:25,893 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-23 20:33:25,894 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-23 20:33:25,894 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-23 20:33:25,894 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-23 20:33:25,894 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-23 20:33:25,894 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-23 20:33:25,894 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-23 20:33:25,894 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-23 20:33:25,895 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-23 20:33:25,895 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-23 20:33:25,895 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-23 20:33:25,895 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-23 20:33:25,895 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-23 20:33:25,895 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-23 20:33:25,896 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:33:25,896 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-23 20:33:25,896 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-23 20:33:25,896 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:33:25,896 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-23 20:33:25,896 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-23 20:33:25,896 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-23 20:33:25,897 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-23 20:33:25,897 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-23 20:33:25,897 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-23 20:33:25,897 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-23 20:33:25,897 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-23 20:33:25,897 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-23 20:33:25,898 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-23 20:33:25,898 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-23 20:33:25,898 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-23 20:33:25,898 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-23 20:33:25,898 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-23 20:33:25,898 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-23 20:33:25,898 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-23 20:33:25,899 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-23 20:33:25,899 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-23 20:33:25,899 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-23 20:33:25,899 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-23 20:33:25,899 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-23 20:33:25,899 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-23 20:33:25,900 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-23 20:33:25,900 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-23 20:33:25,900 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-23 20:33:25,900 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-23 20:33:25,900 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-23 20:33:25,900 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-23 20:33:25,900 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-23 20:33:25,901 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-23 20:33:25,901 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-23 20:33:25,901 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-23 20:33:25,901 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-23 20:33:25,901 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-23 20:33:25,901 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-23 20:33:25,901 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-23 20:33:25,902 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-23 20:33:25,902 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-23 20:33:25,902 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-23 20:33:25,902 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-23 20:33:25,902 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-23 20:33:25,902 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-23 20:33:25,902 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-23 20:33:25,903 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-23 20:33:25,903 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-23 20:33:25,903 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-23 20:33:25,903 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-23 20:33:25,903 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-23 20:33:25,903 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:33:25,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:33:25,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:33:25,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:33:25,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:33:25,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:33:25,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:33:25,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:33:25,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:33:25,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:33:26,232 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-23 20:33:26,469 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:33:26,469 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-23 20:33:26,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:33:26 BoogieIcfgContainer [2020-10-23 20:33:26,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:33:26,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:33:26,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:33:26,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:33:26,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:33:25" (1/3) ... [2020-10-23 20:33:26,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34eeae31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:33:26, skipping insertion in model container [2020-10-23 20:33:26,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:25" (2/3) ... [2020-10-23 20:33:26,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34eeae31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:33:26, skipping insertion in model container [2020-10-23 20:33:26,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:33:26" (3/3) ... [2020-10-23 20:33:26,480 INFO L111 eAbstractionObserver]: Analyzing ICFG splice-1.i [2020-10-23 20:33:26,499 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:33:26,514 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:33:26,541 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:33:26,587 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:33:26,588 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:33:26,588 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:33:26,588 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:33:26,588 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:33:26,589 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:33:26,589 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:33:26,589 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:33:26,609 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2020-10-23 20:33:26,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-23 20:33:26,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:33:26,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:33:26,623 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:33:26,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:33:26,630 INFO L82 PathProgramCache]: Analyzing trace with hash 325205440, now seen corresponding path program 1 times [2020-10-23 20:33:26,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:33:26,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083339945] [2020-10-23 20:33:26,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:33:26,770 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:33:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:27,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:33:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:27,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:33:27,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083339945] [2020-10-23 20:33:27,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:33:27,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 20:33:27,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971429330] [2020-10-23 20:33:27,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 20:33:27,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:33:27,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 20:33:27,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:33:27,131 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 3 states. [2020-10-23 20:33:27,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:33:27,466 INFO L93 Difference]: Finished difference Result 150 states and 176 transitions. [2020-10-23 20:33:27,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 20:33:27,474 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-10-23 20:33:27,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:33:27,492 INFO L225 Difference]: With dead ends: 150 [2020-10-23 20:33:27,492 INFO L226 Difference]: Without dead ends: 82 [2020-10-23 20:33:27,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:33:27,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-23 20:33:27,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-10-23 20:33:27,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-23 20:33:27,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2020-10-23 20:33:27,576 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 39 [2020-10-23 20:33:27,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:33:27,576 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2020-10-23 20:33:27,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 20:33:27,577 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2020-10-23 20:33:27,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-23 20:33:27,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:33:27,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:33:27,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:33:27,583 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:33:27,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:33:27,584 INFO L82 PathProgramCache]: Analyzing trace with hash -322632441, now seen corresponding path program 1 times [2020-10-23 20:33:27,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:33:27,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823514868] [2020-10-23 20:33:27,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:33:27,591 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:33:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:27,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:33:27,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:27,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:33:27,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823514868] [2020-10-23 20:33:27,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:33:27,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 20:33:27,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037822550] [2020-10-23 20:33:27,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 20:33:27,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:33:27,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 20:33:27,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:33:27,732 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand 6 states. [2020-10-23 20:33:27,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:33:27,974 INFO L93 Difference]: Finished difference Result 150 states and 163 transitions. [2020-10-23 20:33:27,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 20:33:27,974 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-10-23 20:33:27,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:33:27,976 INFO L225 Difference]: With dead ends: 150 [2020-10-23 20:33:27,977 INFO L226 Difference]: Without dead ends: 104 [2020-10-23 20:33:27,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-23 20:33:27,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-23 20:33:27,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 84. [2020-10-23 20:33:27,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-23 20:33:27,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions. [2020-10-23 20:33:27,991 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 43 [2020-10-23 20:33:27,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:33:27,991 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 90 transitions. [2020-10-23 20:33:27,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 20:33:27,992 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions. [2020-10-23 20:33:27,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-23 20:33:27,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:33:27,994 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:33:27,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:33:27,994 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:33:27,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:33:27,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1699669116, now seen corresponding path program 1 times [2020-10-23 20:33:27,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:33:27,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334362317] [2020-10-23 20:33:27,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:33:28,290 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 92 [2020-10-23 20:33:28,356 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:28,434 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:28,440 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:28,504 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:28,507 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:28,507 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:148, output treesize:124 [2020-10-23 20:33:28,831 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91 [2020-10-23 20:33:28,846 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:28,923 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:28,930 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:28,999 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:29,001 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:29,002 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:148, output treesize:124 [2020-10-23 20:33:29,076 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:33:29,081 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:33:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:29,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:33:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:29,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:33:29,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334362317] [2020-10-23 20:33:29,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:33:29,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:33:29,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611924855] [2020-10-23 20:33:29,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:33:29,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:33:29,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:33:29,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:33:29,186 INFO L87 Difference]: Start difference. First operand 84 states and 90 transitions. Second operand 4 states. [2020-10-23 20:33:29,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:33:29,465 INFO L93 Difference]: Finished difference Result 195 states and 214 transitions. [2020-10-23 20:33:29,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 20:33:29,466 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-10-23 20:33:29,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:33:29,471 INFO L225 Difference]: With dead ends: 195 [2020-10-23 20:33:29,471 INFO L226 Difference]: Without dead ends: 134 [2020-10-23 20:33:29,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:33:29,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-23 20:33:29,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 103. [2020-10-23 20:33:29,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-23 20:33:29,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 111 transitions. [2020-10-23 20:33:29,496 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 111 transitions. Word has length 56 [2020-10-23 20:33:29,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:33:29,497 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 111 transitions. [2020-10-23 20:33:29,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:33:29,497 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 111 transitions. [2020-10-23 20:33:29,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-23 20:33:29,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:33:29,500 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:33:29,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:33:29,501 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:33:29,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:33:29,502 INFO L82 PathProgramCache]: Analyzing trace with hash -298314368, now seen corresponding path program 1 times [2020-10-23 20:33:29,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:33:29,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884679504] [2020-10-23 20:33:29,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:33:29,766 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 92 [2020-10-23 20:33:29,780 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:29,857 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:29,865 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:29,953 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:29,955 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:29,956 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:149, output treesize:125 [2020-10-23 20:33:30,284 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91 [2020-10-23 20:33:30,306 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:30,409 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-23 20:33:30,409 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:30,417 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:30,494 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:30,496 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:30,497 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:149, output treesize:125 [2020-10-23 20:33:30,588 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:33:30,596 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:33:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:30,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:33:30,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:30,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:33:30,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884679504] [2020-10-23 20:33:30,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:33:30,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 20:33:30,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202216915] [2020-10-23 20:33:30,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 20:33:30,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:33:30,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 20:33:30,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:33:30,756 INFO L87 Difference]: Start difference. First operand 103 states and 111 transitions. Second operand 5 states. [2020-10-23 20:33:30,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:33:30,992 INFO L93 Difference]: Finished difference Result 147 states and 160 transitions. [2020-10-23 20:33:30,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 20:33:30,993 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2020-10-23 20:33:30,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:33:30,996 INFO L225 Difference]: With dead ends: 147 [2020-10-23 20:33:30,996 INFO L226 Difference]: Without dead ends: 126 [2020-10-23 20:33:30,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:33:30,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-23 20:33:31,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 108. [2020-10-23 20:33:31,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-23 20:33:31,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 117 transitions. [2020-10-23 20:33:31,009 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 117 transitions. Word has length 56 [2020-10-23 20:33:31,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:33:31,009 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 117 transitions. [2020-10-23 20:33:31,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 20:33:31,010 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 117 transitions. [2020-10-23 20:33:31,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-23 20:33:31,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:33:31,011 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:33:31,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:33:31,011 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:33:31,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:33:31,012 INFO L82 PathProgramCache]: Analyzing trace with hash 152366671, now seen corresponding path program 1 times [2020-10-23 20:33:31,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:33:31,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227084223] [2020-10-23 20:33:31,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:33:31,240 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 92 [2020-10-23 20:33:31,265 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:31,345 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:31,358 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:31,431 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:31,433 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:31,433 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:149, output treesize:125 [2020-10-23 20:33:31,767 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91 [2020-10-23 20:33:31,788 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:31,880 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:31,887 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:31,964 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:31,966 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:31,966 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:149, output treesize:125 [2020-10-23 20:33:32,042 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:33:32,046 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:33:32,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:32,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:33:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:32,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:33:32,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227084223] [2020-10-23 20:33:32,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:33:32,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 20:33:32,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208200686] [2020-10-23 20:33:32,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 20:33:32,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:33:32,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 20:33:32,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:33:32,166 INFO L87 Difference]: Start difference. First operand 108 states and 117 transitions. Second operand 5 states. [2020-10-23 20:33:32,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:33:32,406 INFO L93 Difference]: Finished difference Result 152 states and 165 transitions. [2020-10-23 20:33:32,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 20:33:32,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-23 20:33:32,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:33:32,408 INFO L225 Difference]: With dead ends: 152 [2020-10-23 20:33:32,409 INFO L226 Difference]: Without dead ends: 135 [2020-10-23 20:33:32,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:33:32,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-23 20:33:32,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 131. [2020-10-23 20:33:32,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-23 20:33:32,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 142 transitions. [2020-10-23 20:33:32,424 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 142 transitions. Word has length 58 [2020-10-23 20:33:32,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:33:32,424 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 142 transitions. [2020-10-23 20:33:32,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 20:33:32,425 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 142 transitions. [2020-10-23 20:33:32,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-23 20:33:32,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:33:32,426 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:33:32,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:33:32,426 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:33:32,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:33:32,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1310006761, now seen corresponding path program 1 times [2020-10-23 20:33:32,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:33:32,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82024709] [2020-10-23 20:33:32,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:33:32,790 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 92 [2020-10-23 20:33:32,811 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:32,902 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:32,915 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:32,980 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:32,981 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:32,981 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:149, output treesize:125 [2020-10-23 20:33:33,278 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91 [2020-10-23 20:33:33,293 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:33,374 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:33,380 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:33,451 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:33,452 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:33,453 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:149, output treesize:125 [2020-10-23 20:33:33,622 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:33:33,626 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:33:33,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:33:33,668 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:33:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:33:33,724 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:33:33,776 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:33:33,777 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:33:33,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:33:33,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:33:33 BoogieIcfgContainer [2020-10-23 20:33:33,796 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:33:33,800 INFO L168 Benchmark]: Toolchain (without parser) took 8585.89 ms. Allocated memory was 151.0 MB in the beginning and 242.2 MB in the end (delta: 91.2 MB). Free memory was 125.1 MB in the beginning and 130.0 MB in the end (delta: -4.8 MB). Peak memory consumption was 87.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:33:33,801 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:33:33,802 INFO L168 Benchmark]: CACSL2BoogieTranslator took 481.74 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 102.6 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:33:33,803 INFO L168 Benchmark]: Boogie Preprocessor took 68.82 ms. Allocated memory is still 151.0 MB. Free memory was 102.6 MB in the beginning and 99.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:33:33,803 INFO L168 Benchmark]: RCFGBuilder took 698.22 ms. Allocated memory is still 151.0 MB. Free memory was 99.7 MB in the beginning and 84.7 MB in the end (delta: 15.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:33:33,804 INFO L168 Benchmark]: TraceAbstraction took 7322.88 ms. Allocated memory was 151.0 MB in the beginning and 242.2 MB in the end (delta: 91.2 MB). Free memory was 84.7 MB in the beginning and 130.0 MB in the end (delta: -45.3 MB). Peak memory consumption was 46.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:33:33,807 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 481.74 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 102.6 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 68.82 ms. Allocated memory is still 151.0 MB. Free memory was 102.6 MB in the beginning and 99.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 698.22 ms. Allocated memory is still 151.0 MB. Free memory was 99.7 MB in the beginning and 84.7 MB in the end (delta: 15.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7322.88 ms. Allocated memory was 151.0 MB in the beginning and 242.2 MB in the end (delta: 91.2 MB). Free memory was 84.7 MB in the beginning and 130.0 MB in the end (delta: -45.3 MB). Peak memory consumption was 46.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L532] int flag = 1; [L533] List a = (List) malloc(sizeof(struct node)); [L534] COND FALSE !(a == 0) [L535] List t; [L536] List l1; [L537] List l2; [L538] List b; [L539] List u; [L540] List p = a; [L541] COND TRUE __VERIFIER_nondet_int() [L542] COND TRUE \read(flag) [L543] p->h = 1 [L544] flag = 0 [L549] t = (List) malloc(sizeof(struct node)) [L550] COND FALSE !(t == 0) [L551] p->n = t [L552] EXPR p->n [L552] p = p->n [L541] COND FALSE !(__VERIFIER_nondet_int()) [L554] p->h = 3 [L555] EXPR a->h [L555] COND FALSE !(a->h == 3) [L556] flag = 1 [L557] l1 = 0 [L558] l2 = 0 [L559] p = a [L560] EXPR p->h [L560] COND TRUE p->h != 3 [L561] t = p [L562] EXPR p->n [L562] p = p->n [L563] COND TRUE \read(flag) [L564] t->n = l1 [L565] l1 = t [L566] flag = 0 [L560] EXPR p->h [L560] COND FALSE !(p->h != 3) [L573] p = l1 [L574] COND TRUE p != 0 [L575] EXPR p->h [L575] COND TRUE p->h != 2 [L584] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "splice-1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 121 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.1s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 447 SDtfs, 133 SDslu, 552 SDs, 0 SdLazy, 582 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=131occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 73 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...