/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 20:01:41,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 20:01:41,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 20:01:41,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 20:01:41,830 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 20:01:41,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 20:01:41,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 20:01:41,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 20:01:41,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 20:01:41,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 20:01:41,839 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 20:01:41,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 20:01:41,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 20:01:41,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 20:01:41,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 20:01:41,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 20:01:41,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 20:01:41,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 20:01:41,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 20:01:41,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 20:01:41,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 20:01:41,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 20:01:41,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 20:01:41,852 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 20:01:41,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 20:01:41,855 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 20:01:41,855 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 20:01:41,856 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 20:01:41,857 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 20:01:41,858 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 20:01:41,858 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 20:01:41,858 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 20:01:41,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 20:01:41,860 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 20:01:41,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 20:01:41,861 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 20:01:41,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 20:01:41,862 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 20:01:41,862 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 20:01:41,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 20:01:41,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 20:01:41,865 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 20:01:41,879 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 20:01:41,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 20:01:41,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 20:01:41,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 20:01:41,881 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 20:01:41,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 20:01:41,882 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 20:01:41,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 20:01:41,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 20:01:41,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 20:01:41,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 20:01:41,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 20:01:41,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 20:01:41,883 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 20:01:41,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 20:01:41,883 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 20:01:41,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 20:01:41,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 20:01:41,884 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 20:01:41,884 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 20:01:41,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 20:01:41,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 20:01:41,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 20:01:41,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 20:01:41,885 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 20:01:41,885 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 20:01:41,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:01:41,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 20:01:41,886 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 20:01:41,886 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 20:01:42,163 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 20:01:42,178 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 20:01:42,182 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 20:01:42,183 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 20:01:42,184 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 20:01:42,185 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-07-21 20:01:42,253 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d904405f2/0f65a1011ac341129d2591205bbbef4f/FLAG88355d7d1 [2020-07-21 20:01:42,789 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 20:01:42,789 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-07-21 20:01:42,803 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d904405f2/0f65a1011ac341129d2591205bbbef4f/FLAG88355d7d1 [2020-07-21 20:01:43,042 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d904405f2/0f65a1011ac341129d2591205bbbef4f [2020-07-21 20:01:43,050 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 20:01:43,053 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 20:01:43,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 20:01:43,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 20:01:43,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 20:01:43,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:01:43" (1/1) ... [2020-07-21 20:01:43,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a27b8ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:01:43, skipping insertion in model container [2020-07-21 20:01:43,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:01:43" (1/1) ... [2020-07-21 20:01:43,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 20:01:43,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 20:01:43,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:01:43,567 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 20:01:43,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:01:43,712 INFO L208 MainTranslator]: Completed translation [2020-07-21 20:01:43,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:01:43 WrapperNode [2020-07-21 20:01:43,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 20:01:43,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 20:01:43,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 20:01:43,714 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 20:01:43,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:01:43" (1/1) ... [2020-07-21 20:01:43,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:01:43" (1/1) ... [2020-07-21 20:01:43,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:01:43" (1/1) ... [2020-07-21 20:01:43,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:01:43" (1/1) ... [2020-07-21 20:01:43,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:01:43" (1/1) ... [2020-07-21 20:01:43,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:01:43" (1/1) ... [2020-07-21 20:01:43,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:01:43" (1/1) ... [2020-07-21 20:01:43,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 20:01:43,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 20:01:43,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 20:01:43,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 20:01:43,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:01:43" (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 [2020-07-21 20:01:43,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 20:01:43,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 20:01:43,869 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 20:01:43,870 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-21 20:01:43,870 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-21 20:01:43,870 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-21 20:01:43,870 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-21 20:01:43,870 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-21 20:01:43,870 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-21 20:01:43,871 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-21 20:01:43,871 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-21 20:01:43,871 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-21 20:01:43,871 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-21 20:01:43,871 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-21 20:01:43,871 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-21 20:01:43,872 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-21 20:01:43,872 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-21 20:01:43,872 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-21 20:01:43,872 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-21 20:01:43,872 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-21 20:01:43,873 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-21 20:01:43,873 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-21 20:01:43,873 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-21 20:01:43,873 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-21 20:01:43,873 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-21 20:01:43,873 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-21 20:01:43,874 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-21 20:01:43,874 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-21 20:01:43,874 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-21 20:01:43,874 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-21 20:01:43,874 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-21 20:01:43,874 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-21 20:01:43,875 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-21 20:01:43,875 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-21 20:01:43,875 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-21 20:01:43,875 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-21 20:01:43,875 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-21 20:01:43,875 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-21 20:01:43,875 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-21 20:01:43,876 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-21 20:01:43,876 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-21 20:01:43,876 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-21 20:01:43,876 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-21 20:01:43,876 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-21 20:01:43,876 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-21 20:01:43,877 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-21 20:01:43,877 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-21 20:01:43,877 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-21 20:01:43,877 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-21 20:01:43,877 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-21 20:01:43,877 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-21 20:01:43,877 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-21 20:01:43,878 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-21 20:01:43,878 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 20:01:43,878 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-21 20:01:43,878 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-21 20:01:43,878 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 20:01:43,878 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-21 20:01:43,879 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-21 20:01:43,879 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-21 20:01:43,879 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-21 20:01:43,879 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-21 20:01:43,879 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 20:01:43,879 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-21 20:01:43,880 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-21 20:01:43,880 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-21 20:01:43,880 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 20:01:43,880 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-21 20:01:43,880 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-21 20:01:43,880 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-21 20:01:43,880 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-21 20:01:43,881 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-21 20:01:43,881 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-21 20:01:43,881 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-21 20:01:43,881 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-21 20:01:43,881 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-21 20:01:43,881 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-21 20:01:43,882 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-21 20:01:43,882 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-21 20:01:43,882 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-21 20:01:43,882 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-21 20:01:43,882 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-21 20:01:43,882 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-21 20:01:43,882 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-21 20:01:43,883 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-21 20:01:43,883 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-21 20:01:43,883 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-21 20:01:43,883 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-21 20:01:43,883 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-21 20:01:43,883 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-21 20:01:43,883 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-21 20:01:43,884 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-21 20:01:43,884 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-21 20:01:43,884 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-21 20:01:43,884 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-21 20:01:43,884 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-21 20:01:43,884 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-21 20:01:43,884 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-21 20:01:43,885 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-21 20:01:43,885 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-21 20:01:43,885 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-21 20:01:43,885 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-21 20:01:43,885 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-21 20:01:43,885 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-21 20:01:43,885 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-21 20:01:43,886 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-21 20:01:43,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 20:01:43,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 20:01:43,886 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 20:01:43,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 20:01:43,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 20:01:43,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 20:01:43,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 20:01:43,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 20:01:43,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 20:01:44,640 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 20:01:44,640 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-07-21 20:01:44,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:01:44 BoogieIcfgContainer [2020-07-21 20:01:44,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 20:01:44,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 20:01:44,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 20:01:44,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 20:01:44,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:01:43" (1/3) ... [2020-07-21 20:01:44,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1680c633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:01:44, skipping insertion in model container [2020-07-21 20:01:44,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:01:43" (2/3) ... [2020-07-21 20:01:44,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1680c633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:01:44, skipping insertion in model container [2020-07-21 20:01:44,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:01:44" (3/3) ... [2020-07-21 20:01:44,657 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-01-1.i [2020-07-21 20:01:44,669 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 20:01:44,678 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-07-21 20:01:44,696 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-07-21 20:01:44,728 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 20:01:44,728 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 20:01:44,728 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 20:01:44,729 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 20:01:44,729 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 20:01:44,730 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 20:01:44,730 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 20:01:44,730 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 20:01:44,757 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-07-21 20:01:44,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-21 20:01:44,764 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:01:44,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:01:44,766 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:01:44,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:01:44,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1861454184, now seen corresponding path program 1 times [2020-07-21 20:01:44,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:01:44,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78242318] [2020-07-21 20:01:44,785 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:01:44,959 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 20:01:44,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:01:44,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 20:01:44,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:01:45,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:01:45,006 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:01:45,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78242318] [2020-07-21 20:01:45,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:01:45,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 20:01:45,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480648445] [2020-07-21 20:01:45,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 20:01:45,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:01:45,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 20:01:45,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 20:01:45,033 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 3 states. [2020-07-21 20:01:45,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:01:45,105 INFO L93 Difference]: Finished difference Result 186 states and 302 transitions. [2020-07-21 20:01:45,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 20:01:45,107 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-07-21 20:01:45,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:01:45,118 INFO L225 Difference]: With dead ends: 186 [2020-07-21 20:01:45,118 INFO L226 Difference]: Without dead ends: 99 [2020-07-21 20:01:45,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 20:01:45,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-07-21 20:01:45,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 81. [2020-07-21 20:01:45,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-07-21 20:01:45,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-07-21 20:01:45,193 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 8 [2020-07-21 20:01:45,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:01:45,193 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-07-21 20:01:45,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 20:01:45,194 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-07-21 20:01:45,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 20:01:45,195 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:01:45,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:01:45,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:01:45,408 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:01:45,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:01:45,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1461031906, now seen corresponding path program 1 times [2020-07-21 20:01:45,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:01:45,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630085664] [2020-07-21 20:01:45,411 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:01:45,521 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:01:45,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:01:45,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 20:01:45,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:01:45,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:01:45,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:01:45,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630085664] [2020-07-21 20:01:45,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:01:45,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 20:01:45,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393837685] [2020-07-21 20:01:45,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 20:01:45,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:01:45,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 20:01:45,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 20:01:45,585 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 3 states. [2020-07-21 20:01:45,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:01:45,674 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2020-07-21 20:01:45,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 20:01:45,677 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-07-21 20:01:45,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:01:45,680 INFO L225 Difference]: With dead ends: 84 [2020-07-21 20:01:45,680 INFO L226 Difference]: Without dead ends: 82 [2020-07-21 20:01:45,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 20:01:45,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-07-21 20:01:45,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-07-21 20:01:45,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-07-21 20:01:45,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2020-07-21 20:01:45,705 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 14 [2020-07-21 20:01:45,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:01:45,706 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2020-07-21 20:01:45,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 20:01:45,706 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2020-07-21 20:01:45,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 20:01:45,707 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:01:45,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:01:45,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:01:45,922 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:01:45,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:01:45,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1461033828, now seen corresponding path program 1 times [2020-07-21 20:01:45,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:01:45,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539554227] [2020-07-21 20:01:45,925 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:01:46,018 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:01:46,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:01:46,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 20:01:46,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:01:46,080 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-21 20:01:46,080 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:01:46,091 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:46,095 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-21 20:01:46,096 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 20:01:46,102 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:46,102 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 20:01:46,103 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:19 [2020-07-21 20:01:46,124 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:01:46,126 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:01:46,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:01:46,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:01:46,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539554227] [2020-07-21 20:01:46,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:01:46,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 20:01:46,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057239986] [2020-07-21 20:01:46,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 20:01:46,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:01:46,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 20:01:46,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 20:01:46,142 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 4 states. [2020-07-21 20:01:46,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:01:46,273 INFO L93 Difference]: Finished difference Result 138 states and 153 transitions. [2020-07-21 20:01:46,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 20:01:46,274 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-07-21 20:01:46,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:01:46,276 INFO L225 Difference]: With dead ends: 138 [2020-07-21 20:01:46,276 INFO L226 Difference]: Without dead ends: 136 [2020-07-21 20:01:46,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 20:01:46,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-07-21 20:01:46,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 84. [2020-07-21 20:01:46,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-07-21 20:01:46,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2020-07-21 20:01:46,287 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 14 [2020-07-21 20:01:46,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:01:46,287 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2020-07-21 20:01:46,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 20:01:46,287 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2020-07-21 20:01:46,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 20:01:46,288 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:01:46,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:01:46,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:01:46,504 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:01:46,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:01:46,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1462880870, now seen corresponding path program 1 times [2020-07-21 20:01:46,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:01:46,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180968091] [2020-07-21 20:01:46,507 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:01:46,659 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 20:01:46,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:01:46,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 20:01:46,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:01:46,672 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-07-21 20:01:46,672 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:01:46,675 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:46,676 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 20:01:46,677 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-07-21 20:01:46,725 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:46,726 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-07-21 20:01:46,728 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:01:46,753 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:46,758 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.offset_36|], 8=[|v_#memory_$Pointer$.base_36|]} [2020-07-21 20:01:46,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 20:01:46,769 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 20:01:46,788 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:46,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 20:01:46,800 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 24 [2020-07-21 20:01:46,801 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 20:01:46,816 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:46,818 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 20:01:46,819 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:186, output treesize:47 [2020-07-21 20:01:46,841 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 20:01:46,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:01:46,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:01:46,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180968091] [2020-07-21 20:01:46,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:01:46,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 20:01:46,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103031453] [2020-07-21 20:01:46,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 20:01:46,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:01:46,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 20:01:46,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 20:01:46,857 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand 5 states. [2020-07-21 20:01:47,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:01:47,065 INFO L93 Difference]: Finished difference Result 221 states and 244 transitions. [2020-07-21 20:01:47,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 20:01:47,066 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-21 20:01:47,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:01:47,069 INFO L225 Difference]: With dead ends: 221 [2020-07-21 20:01:47,069 INFO L226 Difference]: Without dead ends: 152 [2020-07-21 20:01:47,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 20:01:47,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-07-21 20:01:47,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 81. [2020-07-21 20:01:47,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-07-21 20:01:47,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-07-21 20:01:47,080 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 14 [2020-07-21 20:01:47,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:01:47,081 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-07-21 20:01:47,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 20:01:47,081 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-07-21 20:01:47,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-21 20:01:47,082 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:01:47,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:01:47,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:01:47,297 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:01:47,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:01:47,297 INFO L82 PathProgramCache]: Analyzing trace with hash 177734485, now seen corresponding path program 1 times [2020-07-21 20:01:47,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:01:47,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858885644] [2020-07-21 20:01:47,298 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:01:47,397 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 20:01:47,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:01:47,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-21 20:01:47,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:01:47,412 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-07-21 20:01:47,413 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:01:47,419 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:47,419 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 20:01:47,419 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-07-21 20:01:47,476 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:47,477 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-07-21 20:01:47,478 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:01:47,487 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:47,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 20:01:47,492 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 20:01:47,499 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:47,501 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 20:01:47,501 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:46, output treesize:4 [2020-07-21 20:01:47,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:01:47,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:01:47,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858885644] [2020-07-21 20:01:47,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:01:47,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 20:01:47,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51233890] [2020-07-21 20:01:47,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 20:01:47,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:01:47,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 20:01:47,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 20:01:47,520 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 5 states. [2020-07-21 20:01:47,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:01:47,684 INFO L93 Difference]: Finished difference Result 126 states and 140 transitions. [2020-07-21 20:01:47,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 20:01:47,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-07-21 20:01:47,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:01:47,686 INFO L225 Difference]: With dead ends: 126 [2020-07-21 20:01:47,686 INFO L226 Difference]: Without dead ends: 122 [2020-07-21 20:01:47,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 20:01:47,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-07-21 20:01:47,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 77. [2020-07-21 20:01:47,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-21 20:01:47,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2020-07-21 20:01:47,706 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 19 [2020-07-21 20:01:47,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:01:47,706 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2020-07-21 20:01:47,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 20:01:47,707 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2020-07-21 20:01:47,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-21 20:01:47,707 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:01:47,707 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] [2020-07-21 20:01:47,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:01:47,909 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:01:47,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:01:47,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1214805939, now seen corresponding path program 1 times [2020-07-21 20:01:47,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:01:47,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124442447] [2020-07-21 20:01:47,911 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:01:47,990 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 20:01:47,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:01:47,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 20:01:47,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:01:48,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:01:48,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:01:48,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124442447] [2020-07-21 20:01:48,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:01:48,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 20:01:48,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604199407] [2020-07-21 20:01:48,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 20:01:48,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:01:48,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 20:01:48,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 20:01:48,033 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand 5 states. [2020-07-21 20:01:48,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:01:48,119 INFO L93 Difference]: Finished difference Result 136 states and 150 transitions. [2020-07-21 20:01:48,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 20:01:48,119 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-07-21 20:01:48,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:01:48,121 INFO L225 Difference]: With dead ends: 136 [2020-07-21 20:01:48,121 INFO L226 Difference]: Without dead ends: 116 [2020-07-21 20:01:48,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 20:01:48,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-07-21 20:01:48,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 76. [2020-07-21 20:01:48,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-07-21 20:01:48,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2020-07-21 20:01:48,128 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 20 [2020-07-21 20:01:48,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:01:48,128 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2020-07-21 20:01:48,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 20:01:48,129 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2020-07-21 20:01:48,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 20:01:48,129 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:01:48,130 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] [2020-07-21 20:01:48,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:01:48,331 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:01:48,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:01:48,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1924122782, now seen corresponding path program 1 times [2020-07-21 20:01:48,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:01:48,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003001226] [2020-07-21 20:01:48,333 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:01:48,428 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:01:48,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:01:48,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 20:01:48,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:01:48,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:01:48,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:01:48,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003001226] [2020-07-21 20:01:48,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:01:48,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 20:01:48,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029567740] [2020-07-21 20:01:48,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 20:01:48,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:01:48,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 20:01:48,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 20:01:48,462 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand 3 states. [2020-07-21 20:01:48,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:01:48,480 INFO L93 Difference]: Finished difference Result 102 states and 115 transitions. [2020-07-21 20:01:48,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 20:01:48,481 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-07-21 20:01:48,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:01:48,482 INFO L225 Difference]: With dead ends: 102 [2020-07-21 20:01:48,482 INFO L226 Difference]: Without dead ends: 100 [2020-07-21 20:01:48,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 20:01:48,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-07-21 20:01:48,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 78. [2020-07-21 20:01:48,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-07-21 20:01:48,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 88 transitions. [2020-07-21 20:01:48,497 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 88 transitions. Word has length 24 [2020-07-21 20:01:48,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:01:48,497 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 88 transitions. [2020-07-21 20:01:48,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 20:01:48,497 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 88 transitions. [2020-07-21 20:01:48,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-21 20:01:48,498 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:01:48,498 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] [2020-07-21 20:01:48,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:01:48,712 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:01:48,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:01:48,712 INFO L82 PathProgramCache]: Analyzing trace with hash -481740404, now seen corresponding path program 1 times [2020-07-21 20:01:48,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:01:48,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967258891] [2020-07-21 20:01:48,713 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:01:48,798 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 20:01:48,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:01:48,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-21 20:01:48,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:01:48,821 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-21 20:01:48,821 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:01:48,831 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:48,835 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-21 20:01:48,835 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 20:01:48,850 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:48,851 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 20:01:48,851 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:22 [2020-07-21 20:01:48,899 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-21 20:01:48,900 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:01:48,909 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:48,912 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-21 20:01:48,913 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 20:01:48,919 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:48,920 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 20:01:48,920 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2020-07-21 20:01:48,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:01:48,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:01:48,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967258891] [2020-07-21 20:01:48,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:01:48,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 20:01:48,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892808180] [2020-07-21 20:01:48,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 20:01:48,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:01:48,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 20:01:48,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 20:01:48,934 INFO L87 Difference]: Start difference. First operand 78 states and 88 transitions. Second operand 6 states. [2020-07-21 20:01:49,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:01:49,203 INFO L93 Difference]: Finished difference Result 210 states and 236 transitions. [2020-07-21 20:01:49,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 20:01:49,205 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-07-21 20:01:49,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:01:49,206 INFO L225 Difference]: With dead ends: 210 [2020-07-21 20:01:49,206 INFO L226 Difference]: Without dead ends: 167 [2020-07-21 20:01:49,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-07-21 20:01:49,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-07-21 20:01:49,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 100. [2020-07-21 20:01:49,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-07-21 20:01:49,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-07-21 20:01:49,215 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 25 [2020-07-21 20:01:49,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:01:49,215 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-07-21 20:01:49,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 20:01:49,216 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-07-21 20:01:49,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-21 20:01:49,217 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:01:49,217 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] [2020-07-21 20:01:49,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:01:49,429 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:01:49,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:01:49,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1502808758, now seen corresponding path program 1 times [2020-07-21 20:01:49,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:01:49,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785567153] [2020-07-21 20:01:49,431 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:01:49,545 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:01:49,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:01:49,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 20:01:49,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:01:49,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:01:49,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:01:49,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785567153] [2020-07-21 20:01:49,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:01:49,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 20:01:49,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495454810] [2020-07-21 20:01:49,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 20:01:49,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:01:49,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 20:01:49,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 20:01:49,559 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 3 states. [2020-07-21 20:01:49,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:01:49,576 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2020-07-21 20:01:49,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 20:01:49,578 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-07-21 20:01:49,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:01:49,579 INFO L225 Difference]: With dead ends: 100 [2020-07-21 20:01:49,579 INFO L226 Difference]: Without dead ends: 98 [2020-07-21 20:01:49,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 20:01:49,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-07-21 20:01:49,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-07-21 20:01:49,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-07-21 20:01:49,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 113 transitions. [2020-07-21 20:01:49,586 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 113 transitions. Word has length 25 [2020-07-21 20:01:49,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:01:49,587 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 113 transitions. [2020-07-21 20:01:49,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 20:01:49,587 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 113 transitions. [2020-07-21 20:01:49,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-21 20:01:49,588 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:01:49,588 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] [2020-07-21 20:01:49,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:01:49,803 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:01:49,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:01:49,804 INFO L82 PathProgramCache]: Analyzing trace with hash -611625627, now seen corresponding path program 1 times [2020-07-21 20:01:49,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:01:49,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279295143] [2020-07-21 20:01:49,805 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:01:49,940 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:01:49,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:01:49,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 20:01:49,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:01:49,951 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-21 20:01:49,952 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:01:49,957 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:49,960 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-21 20:01:49,960 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 20:01:49,966 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:49,967 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 20:01:49,967 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:19 [2020-07-21 20:01:49,982 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:01:49,983 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:01:49,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:01:49,991 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:01:49,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279295143] [2020-07-21 20:01:49,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:01:49,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 20:01:49,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008307389] [2020-07-21 20:01:49,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 20:01:49,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:01:49,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 20:01:49,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 20:01:49,993 INFO L87 Difference]: Start difference. First operand 98 states and 113 transitions. Second operand 4 states. [2020-07-21 20:01:50,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:01:50,100 INFO L93 Difference]: Finished difference Result 109 states and 127 transitions. [2020-07-21 20:01:50,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 20:01:50,101 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-07-21 20:01:50,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:01:50,102 INFO L225 Difference]: With dead ends: 109 [2020-07-21 20:01:50,102 INFO L226 Difference]: Without dead ends: 107 [2020-07-21 20:01:50,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 20:01:50,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-07-21 20:01:50,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 101. [2020-07-21 20:01:50,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-07-21 20:01:50,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 116 transitions. [2020-07-21 20:01:50,110 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 116 transitions. Word has length 27 [2020-07-21 20:01:50,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:01:50,110 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 116 transitions. [2020-07-21 20:01:50,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 20:01:50,111 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions. [2020-07-21 20:01:50,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-21 20:01:50,112 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:01:50,112 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] [2020-07-21 20:01:50,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:01:50,326 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:01:50,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:01:50,327 INFO L82 PathProgramCache]: Analyzing trace with hash -609778585, now seen corresponding path program 1 times [2020-07-21 20:01:50,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:01:50,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299479419] [2020-07-21 20:01:50,329 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:01:50,428 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 20:01:50,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:01:50,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 20:01:50,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:01:50,448 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-07-21 20:01:50,449 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:01:50,457 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:50,460 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2020-07-21 20:01:50,475 INFO L624 ElimStorePlain]: treesize reduction 21, result has 30.0 percent of original size [2020-07-21 20:01:50,476 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 20:01:50,477 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:38, output treesize:5 [2020-07-21 20:01:50,503 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:50,503 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-07-21 20:01:50,504 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:01:50,522 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:50,524 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.offset_40|], 8=[|v_#memory_$Pointer$.base_41|]} [2020-07-21 20:01:50,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 20:01:50,531 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 20:01:50,543 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:50,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 20:01:50,563 INFO L350 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2020-07-21 20:01:50,567 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 26 [2020-07-21 20:01:50,567 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 20:01:50,583 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:50,585 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 20:01:50,586 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:186, output treesize:49 [2020-07-21 20:01:50,619 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 20:01:50,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:01:50,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:01:50,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299479419] [2020-07-21 20:01:50,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:01:50,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 20:01:50,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613624257] [2020-07-21 20:01:50,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 20:01:50,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:01:50,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 20:01:50,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 20:01:50,638 INFO L87 Difference]: Start difference. First operand 101 states and 116 transitions. Second operand 5 states. [2020-07-21 20:01:50,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:01:50,895 INFO L93 Difference]: Finished difference Result 171 states and 197 transitions. [2020-07-21 20:01:50,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 20:01:50,896 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-07-21 20:01:50,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:01:50,897 INFO L225 Difference]: With dead ends: 171 [2020-07-21 20:01:50,897 INFO L226 Difference]: Without dead ends: 109 [2020-07-21 20:01:50,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 20:01:50,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-07-21 20:01:50,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 98. [2020-07-21 20:01:50,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-07-21 20:01:50,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2020-07-21 20:01:50,911 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 27 [2020-07-21 20:01:50,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:01:50,912 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2020-07-21 20:01:50,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 20:01:50,912 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2020-07-21 20:01:50,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-21 20:01:50,916 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:01:50,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:01:51,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:01:51,131 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:01:51,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:01:51,132 INFO L82 PathProgramCache]: Analyzing trace with hash 567478293, now seen corresponding path program 1 times [2020-07-21 20:01:51,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:01:51,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944806553] [2020-07-21 20:01:51,134 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:01:51,257 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:01:51,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:01:51,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-21 20:01:51,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:01:51,269 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-07-21 20:01:51,269 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:01:51,273 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:51,274 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 20:01:51,274 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-07-21 20:01:51,318 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:51,319 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-07-21 20:01:51,319 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:01:51,366 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:51,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 20:01:51,392 INFO L350 Elim1Store]: treesize reduction 89, result has 7.3 percent of original size [2020-07-21 20:01:51,393 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 130 [2020-07-21 20:01:51,393 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 20:01:51,412 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:51,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 20:01:51,418 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 31 [2020-07-21 20:01:51,419 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 20:01:51,449 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:51,450 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 20:01:51,450 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:356, output treesize:75 [2020-07-21 20:01:51,547 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 20:01:51,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 20:01:51,564 INFO L350 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2020-07-21 20:01:51,565 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 87 treesize of output 55 [2020-07-21 20:01:51,566 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 20:01:51,568 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 20:01:51,569 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 20:01:51,594 INFO L624 ElimStorePlain]: treesize reduction 8, result has 84.0 percent of original size [2020-07-21 20:01:51,606 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:51,606 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 34 [2020-07-21 20:01:51,607 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 20:01:51,613 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:51,614 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 20:01:51,614 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:94, output treesize:7 [2020-07-21 20:01:51,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:01:51,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:01:51,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944806553] [2020-07-21 20:01:51,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:01:51,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-21 20:01:51,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223353156] [2020-07-21 20:01:51,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 20:01:51,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:01:51,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 20:01:51,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-21 20:01:51,636 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand 7 states. [2020-07-21 20:01:52,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:01:52,403 INFO L93 Difference]: Finished difference Result 240 states and 268 transitions. [2020-07-21 20:01:52,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 20:01:52,403 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-07-21 20:01:52,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:01:52,405 INFO L225 Difference]: With dead ends: 240 [2020-07-21 20:01:52,405 INFO L226 Difference]: Without dead ends: 238 [2020-07-21 20:01:52,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-07-21 20:01:52,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-07-21 20:01:52,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 110. [2020-07-21 20:01:52,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-07-21 20:01:52,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 127 transitions. [2020-07-21 20:01:52,418 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 127 transitions. Word has length 28 [2020-07-21 20:01:52,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:01:52,419 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 127 transitions. [2020-07-21 20:01:52,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 20:01:52,419 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 127 transitions. [2020-07-21 20:01:52,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-21 20:01:52,427 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:01:52,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:01:52,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:01:52,641 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:01:52,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:01:52,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1176203735, now seen corresponding path program 1 times [2020-07-21 20:01:52,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:01:52,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619728059] [2020-07-21 20:01:52,642 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:01:52,736 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 20:01:52,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:01:52,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 20:01:52,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:01:52,753 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-21 20:01:52,753 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:01:52,759 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:52,762 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-21 20:01:52,762 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 20:01:52,766 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:52,767 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 20:01:52,767 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:19 [2020-07-21 20:01:52,785 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-07-21 20:01:52,786 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:01:52,792 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:52,796 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-07-21 20:01:52,796 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 20:01:52,800 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:52,801 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 20:01:52,801 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:7 [2020-07-21 20:01:52,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 20:01:52,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:01:52,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619728059] [2020-07-21 20:01:52,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:01:52,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 20:01:52,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556577064] [2020-07-21 20:01:52,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 20:01:52,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:01:52,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 20:01:52,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 20:01:52,812 INFO L87 Difference]: Start difference. First operand 110 states and 127 transitions. Second operand 4 states. [2020-07-21 20:01:52,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:01:52,934 INFO L93 Difference]: Finished difference Result 160 states and 183 transitions. [2020-07-21 20:01:52,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 20:01:52,934 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-07-21 20:01:52,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:01:52,936 INFO L225 Difference]: With dead ends: 160 [2020-07-21 20:01:52,936 INFO L226 Difference]: Without dead ends: 142 [2020-07-21 20:01:52,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 20:01:52,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-07-21 20:01:52,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 134. [2020-07-21 20:01:52,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-07-21 20:01:52,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 158 transitions. [2020-07-21 20:01:52,947 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 158 transitions. Word has length 30 [2020-07-21 20:01:52,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:01:52,947 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 158 transitions. [2020-07-21 20:01:52,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 20:01:52,947 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 158 transitions. [2020-07-21 20:01:52,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-21 20:01:52,948 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:01:52,948 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:01:53,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:01:53,163 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:01:53,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:01:53,164 INFO L82 PathProgramCache]: Analyzing trace with hash -753501909, now seen corresponding path program 1 times [2020-07-21 20:01:53,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:01:53,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102428655] [2020-07-21 20:01:53,165 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:01:53,251 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 20:01:53,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:01:53,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 27 conjunts are in the unsatisfiable core [2020-07-21 20:01:53,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:01:53,266 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-07-21 20:01:53,266 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:01:53,277 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:53,277 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 20:01:53,277 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-07-21 20:01:53,311 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:53,311 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-07-21 20:01:53,312 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:01:53,357 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:53,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 20:01:53,367 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 20:01:53,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 20:01:53,381 INFO L350 Elim1Store]: treesize reduction 87, result has 9.4 percent of original size [2020-07-21 20:01:53,381 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 271 treesize of output 193 [2020-07-21 20:01:53,382 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 20:01:53,402 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:01:53,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 20:01:53,410 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 31 [2020-07-21 20:01:53,411 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 20:01:53,448 INFO L624 ElimStorePlain]: treesize reduction 4, result has 93.1 percent of original size [2020-07-21 20:01:53,449 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 20:01:53,450 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:360, output treesize:75 [2020-07-21 20:01:53,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:01:53,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:01:53,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102428655] [2020-07-21 20:01:53,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:01:53,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 20:01:53,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766630904] [2020-07-21 20:01:53,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 20:01:53,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:01:53,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 20:01:53,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 20:01:53,538 INFO L87 Difference]: Start difference. First operand 134 states and 158 transitions. Second operand 6 states. [2020-07-21 20:01:53,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:01:53,888 INFO L93 Difference]: Finished difference Result 268 states and 306 transitions. [2020-07-21 20:01:53,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 20:01:53,888 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-07-21 20:01:53,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:01:53,890 INFO L225 Difference]: With dead ends: 268 [2020-07-21 20:01:53,890 INFO L226 Difference]: Without dead ends: 227 [2020-07-21 20:01:53,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-07-21 20:01:53,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-07-21 20:01:53,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 134. [2020-07-21 20:01:53,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-07-21 20:01:53,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 157 transitions. [2020-07-21 20:01:53,901 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 157 transitions. Word has length 30 [2020-07-21 20:01:53,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:01:53,901 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 157 transitions. [2020-07-21 20:01:53,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 20:01:53,901 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 157 transitions. [2020-07-21 20:01:53,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-21 20:01:53,902 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:01:53,902 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] [2020-07-21 20:01:54,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:01:54,117 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:01:54,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:01:54,117 INFO L82 PathProgramCache]: Analyzing trace with hash 758661948, now seen corresponding path program 1 times [2020-07-21 20:01:54,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:01:54,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120547587] [2020-07-21 20:01:54,118 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:01:54,261 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:01:54,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 20:01:54,261 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 20:01:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 20:01:54,280 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 20:01:54,307 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 20:01:54,307 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 20:01:54,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:01:54,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:01:54 BoogieIcfgContainer [2020-07-21 20:01:54,571 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 20:01:54,573 INFO L168 Benchmark]: Toolchain (without parser) took 11521.41 ms. Allocated memory was 138.4 MB in the beginning and 303.0 MB in the end (delta: 164.6 MB). Free memory was 102.5 MB in the beginning and 263.9 MB in the end (delta: -161.4 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-07-21 20:01:54,574 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 20:01:54,574 INFO L168 Benchmark]: CACSL2BoogieTranslator took 658.98 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 102.1 MB in the beginning and 170.8 MB in the end (delta: -68.7 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. [2020-07-21 20:01:54,575 INFO L168 Benchmark]: Boogie Preprocessor took 81.07 ms. Allocated memory is still 203.4 MB. Free memory was 170.8 MB in the beginning and 167.3 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2020-07-21 20:01:54,575 INFO L168 Benchmark]: RCFGBuilder took 850.72 ms. Allocated memory is still 203.4 MB. Free memory was 167.3 MB in the beginning and 112.1 MB in the end (delta: 55.2 MB). Peak memory consumption was 55.2 MB. Max. memory is 7.1 GB. [2020-07-21 20:01:54,575 INFO L168 Benchmark]: TraceAbstraction took 9924.32 ms. Allocated memory was 203.4 MB in the beginning and 303.0 MB in the end (delta: 99.6 MB). Free memory was 111.4 MB in the beginning and 263.9 MB in the end (delta: -152.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 20:01:54,577 INFO L336 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 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 658.98 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 102.1 MB in the beginning and 170.8 MB in the end (delta: -68.7 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 81.07 ms. Allocated memory is still 203.4 MB. Free memory was 170.8 MB in the beginning and 167.3 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 850.72 ms. Allocated memory is still 203.4 MB. Free memory was 167.3 MB in the beginning and 112.1 MB in the end (delta: 55.2 MB). Peak memory consumption was 55.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9924.32 ms. Allocated memory was 203.4 MB in the beginning and 303.0 MB in the end (delta: 99.6 MB). Free memory was 111.4 MB in the beginning and 263.9 MB in the end (delta: -152.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1029]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L992] SLL* list = malloc(sizeof(SLL)); [L993] list->next = ((void*)0) [L994] list->prev = ((void*)0) VAL [list={11798:0}, malloc(sizeof(SLL))={11798:0}] [L995] COND FALSE !(!(list != ((void*)0))) VAL [list={11798:0}, malloc(sizeof(SLL))={11798:0}] [L995] COND FALSE !(__VERIFIER_nondet_int()) [L995] list->inner = malloc(sizeof(SLL)) [L995] EXPR list->inner [L995] list->inner->next = ((void*)0) [L995] EXPR list->inner [L995] list->inner->inner = ((void*)0) [L995] EXPR list->inner [L995] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) VAL [list={11798:0}, list->inner={-1:0}, list->inner != ((void*)0) || list->inner == ((void*)0)=1, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={11798:0}] [L995] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L997] SLL* end = list; VAL [end={11798:0}, list={11798:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={11798:0}] [L1000] COND FALSE !(__VERIFIER_nondet_int()) [L1011] end = ((void*)0) [L1012] end = list VAL [end={11798:0}, list={11798:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={11798:0}] [L1015] COND FALSE !(!(((void*)0) != end)) VAL [end={11798:0}, list={11798:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={11798:0}] [L1017] COND TRUE ((void*)0) != end [L1019] int len = 0; [L1020] EXPR end->inner [L1020] SLL* inner = end->inner; [L1021] COND TRUE ((void*)0) != inner VAL [end={11798:0}, inner={-1:0}, len=0, list={11798:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={11798:0}] [L1023] COND TRUE len == 0 [L1024] len = 1 VAL [end={11798:0}, inner={-1:0}, len=1, list={11798:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={11798:0}] [L1027] COND FALSE !(!(((void*)0) != inner)) VAL [end={11798:0}, inner={-1:0}, len=1, list={11798:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={11798:0}] [L1028] EXPR inner->inner VAL [end={11798:0}, inner={-1:0}, inner->inner={0:0}, len=1, list={11798:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={11798:0}] [L1028] COND FALSE !(!(((void*)0) == inner->inner)) [L1029] EXPR inner->next VAL [end={11798:0}, inner={-1:0}, inner->next={0:0}, len=1, list={11798:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={11798:0}] [L1029] COND TRUE !(((void*)0) != inner->next) [L1029] __VERIFIER_error() VAL [end={11798:0}, inner={-1:0}, len=1, list={11798:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={11798:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 88 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.7s, OverallIterations: 15, TraceHistogramMax: 1, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1149 SDtfs, 1364 SDslu, 1989 SDs, 0 SdLazy, 897 SolverSat, 85 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 318 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=13, 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, 14 MinimizatonAttempts, 561 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 336 NumberOfCodeBlocks, 251 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 291 ConstructedInterpolants, 6 QuantifiedInterpolants, 88269 SizeOfPredicates, 76 NumberOfNonLiveVariables, 974 ConjunctsInSsa, 155 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...