/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 23:21:08,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 23:21:08,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 23:21:08,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 23:21:08,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 23:21:08,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 23:21:08,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 23:21:08,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 23:21:08,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 23:21:08,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 23:21:08,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 23:21:08,750 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 23:21:08,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 23:21:08,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 23:21:08,755 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 23:21:08,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 23:21:08,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 23:21:08,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 23:21:08,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 23:21:08,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 23:21:08,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 23:21:08,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 23:21:08,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 23:21:08,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 23:21:08,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-19 23:21:08,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-19 23:21:08,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-19 23:21:08,778 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-19 23:21:08,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-19 23:21:08,780 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-19 23:21:08,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-19 23:21:08,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-19 23:21:08,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-19 23:21:08,782 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-19 23:21:08,783 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-19 23:21:08,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-19 23:21:08,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-19 23:21:08,784 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-19 23:21:08,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 23:21:08,785 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 23:21:08,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 23:21:08,787 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 [2020-07-19 23:21:08,823 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 23:21:08,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 23:21:08,826 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 23:21:08,826 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 23:21:08,826 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 23:21:08,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 23:21:08,826 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 23:21:08,827 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 23:21:08,827 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 23:21:08,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 23:21:08,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 23:21:08,828 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 23:21:08,828 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 23:21:08,828 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 23:21:08,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 23:21:08,828 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 23:21:08,829 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 23:21:08,829 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 23:21:08,829 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 23:21:08,831 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 23:21:08,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 23:21:08,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 23:21:08,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 23:21:08,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 23:21:08,832 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 23:21:08,832 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 23:21:08,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 23:21:08,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 23:21:08,833 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 23:21:08,833 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS 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 -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-19 23:21:09,087 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 23:21:09,098 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 23:21:09,102 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 23:21:09,103 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 23:21:09,103 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 23:21:09,104 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i [2020-07-19 23:21:09,179 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fb03539f/47a0c0e5e82f44e59f89d3d5b0ba1683/FLAG0b6739fa3 [2020-07-19 23:21:09,669 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 23:21:09,670 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i [2020-07-19 23:21:09,682 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fb03539f/47a0c0e5e82f44e59f89d3d5b0ba1683/FLAG0b6739fa3 [2020-07-19 23:21:09,986 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fb03539f/47a0c0e5e82f44e59f89d3d5b0ba1683 [2020-07-19 23:21:09,994 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 23:21:09,996 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 23:21:09,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 23:21:09,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 23:21:10,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 23:21:10,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:21:09" (1/1) ... [2020-07-19 23:21:10,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6645bd80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:21:10, skipping insertion in model container [2020-07-19 23:21:10,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:21:09" (1/1) ... [2020-07-19 23:21:10,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 23:21:10,061 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 23:21:10,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:21:10,479 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 23:21:10,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:21:10,577 INFO L208 MainTranslator]: Completed translation [2020-07-19 23:21:10,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:21:10 WrapperNode [2020-07-19 23:21:10,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 23:21:10,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 23:21:10,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 23:21:10,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 23:21:10,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:21:10" (1/1) ... [2020-07-19 23:21:10,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:21:10" (1/1) ... [2020-07-19 23:21:10,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:21:10" (1/1) ... [2020-07-19 23:21:10,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:21:10" (1/1) ... [2020-07-19 23:21:10,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:21:10" (1/1) ... [2020-07-19 23:21:10,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:21:10" (1/1) ... [2020-07-19 23:21:10,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:21:10" (1/1) ... [2020-07-19 23:21:10,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 23:21:10,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 23:21:10,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 23:21:10,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 23:21:10,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:21:10" (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 [2020-07-19 23:21:10,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 23:21:10,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 23:21:10,702 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 23:21:10,702 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-19 23:21:10,702 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-19 23:21:10,703 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-19 23:21:10,703 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-19 23:21:10,703 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-19 23:21:10,703 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-19 23:21:10,703 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-19 23:21:10,703 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-19 23:21:10,704 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-19 23:21:10,704 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-19 23:21:10,704 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-19 23:21:10,704 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-19 23:21:10,704 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-19 23:21:10,704 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-19 23:21:10,705 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-19 23:21:10,705 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-19 23:21:10,705 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-19 23:21:10,705 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-19 23:21:10,705 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-19 23:21:10,705 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-19 23:21:10,705 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-19 23:21:10,706 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-19 23:21:10,706 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-19 23:21:10,706 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-19 23:21:10,706 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-19 23:21:10,706 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-19 23:21:10,706 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-19 23:21:10,706 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-19 23:21:10,707 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-19 23:21:10,707 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-19 23:21:10,707 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-19 23:21:10,707 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-19 23:21:10,707 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-19 23:21:10,707 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-19 23:21:10,707 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-19 23:21:10,707 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-19 23:21:10,707 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-19 23:21:10,708 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-19 23:21:10,708 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-19 23:21:10,708 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-19 23:21:10,708 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-19 23:21:10,708 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-19 23:21:10,708 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-19 23:21:10,708 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-19 23:21:10,708 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-19 23:21:10,708 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-19 23:21:10,709 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-19 23:21:10,709 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-19 23:21:10,709 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-19 23:21:10,709 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-19 23:21:10,709 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-19 23:21:10,709 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-19 23:21:10,709 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-19 23:21:10,709 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-19 23:21:10,710 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-19 23:21:10,710 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-19 23:21:10,710 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-19 23:21:10,710 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-19 23:21:10,710 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-19 23:21:10,710 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-19 23:21:10,711 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-19 23:21:10,711 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-19 23:21:10,711 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-19 23:21:10,711 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-19 23:21:10,711 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-19 23:21:10,711 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-19 23:21:10,711 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-19 23:21:10,711 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-19 23:21:10,712 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-19 23:21:10,712 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-19 23:21:10,712 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-19 23:21:10,712 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-19 23:21:10,712 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-19 23:21:10,712 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-19 23:21:10,713 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-19 23:21:10,713 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-19 23:21:10,713 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-19 23:21:10,713 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-19 23:21:10,713 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-19 23:21:10,713 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-19 23:21:10,713 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-19 23:21:10,714 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-19 23:21:10,714 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-19 23:21:10,714 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-19 23:21:10,714 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-19 23:21:10,714 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-19 23:21:10,714 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-19 23:21:10,714 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-19 23:21:10,715 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-19 23:21:10,715 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-19 23:21:10,715 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-19 23:21:10,715 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-19 23:21:10,715 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-19 23:21:10,715 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-19 23:21:10,715 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-19 23:21:10,716 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-19 23:21:10,716 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-19 23:21:10,716 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-19 23:21:10,716 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-19 23:21:10,716 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-19 23:21:10,716 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-19 23:21:10,716 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-19 23:21:10,717 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-19 23:21:10,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 23:21:10,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 23:21:10,717 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 23:21:10,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-19 23:21:10,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-19 23:21:10,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 23:21:10,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-19 23:21:10,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 23:21:10,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 23:21:10,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 23:21:10,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 23:21:11,248 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 23:21:11,248 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-07-19 23:21:11,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:21:11 BoogieIcfgContainer [2020-07-19 23:21:11,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 23:21:11,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 23:21:11,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 23:21:11,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 23:21:11,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:21:09" (1/3) ... [2020-07-19 23:21:11,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39458cb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:21:11, skipping insertion in model container [2020-07-19 23:21:11,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:21:10" (2/3) ... [2020-07-19 23:21:11,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39458cb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:21:11, skipping insertion in model container [2020-07-19 23:21:11,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:21:11" (3/3) ... [2020-07-19 23:21:11,261 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2020-07-19 23:21:11,271 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 23:21:11,279 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-07-19 23:21:11,293 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-07-19 23:21:11,316 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 23:21:11,316 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 23:21:11,317 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 23:21:11,317 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 23:21:11,317 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 23:21:11,318 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 23:21:11,318 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 23:21:11,318 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 23:21:11,336 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-07-19 23:21:11,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-19 23:21:11,342 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:21:11,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:21:11,344 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:21:11,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:21:11,350 INFO L82 PathProgramCache]: Analyzing trace with hash -810798801, now seen corresponding path program 1 times [2020-07-19 23:21:11,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:21:11,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645579770] [2020-07-19 23:21:11,360 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6d76ca87 [2020-07-19 23:21:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:21:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:21:11,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:21:11,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645579770] [2020-07-19 23:21:11,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:21:11,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 23:21:11,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886367606] [2020-07-19 23:21:11,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 23:21:11,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:21:11,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 23:21:11,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 23:21:11,597 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-07-19 23:21:11,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:21:11,712 INFO L93 Difference]: Finished difference Result 59 states and 90 transitions. [2020-07-19 23:21:11,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 23:21:11,714 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-07-19 23:21:11,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:21:11,723 INFO L225 Difference]: With dead ends: 59 [2020-07-19 23:21:11,723 INFO L226 Difference]: Without dead ends: 27 [2020-07-19 23:21:11,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 23:21:11,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-07-19 23:21:11,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-07-19 23:21:11,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-19 23:21:11,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-07-19 23:21:11,783 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 10 [2020-07-19 23:21:11,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:21:11,784 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-07-19 23:21:11,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 23:21:11,784 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-07-19 23:21:11,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-19 23:21:11,785 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:21:11,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:21:11,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 23:21:11,786 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:21:11,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:21:11,786 INFO L82 PathProgramCache]: Analyzing trace with hash 622671912, now seen corresponding path program 1 times [2020-07-19 23:21:11,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:21:11,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144745927] [2020-07-19 23:21:11,787 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6d76ca87 [2020-07-19 23:21:11,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:21:11,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:21:11,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:21:11,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144745927] [2020-07-19 23:21:11,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:21:11,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 23:21:11,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995911615] [2020-07-19 23:21:11,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 23:21:11,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:21:11,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 23:21:11,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-19 23:21:11,877 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 5 states. [2020-07-19 23:21:11,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:21:11,972 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-07-19 23:21:11,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 23:21:11,972 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-07-19 23:21:11,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:21:11,973 INFO L225 Difference]: With dead ends: 35 [2020-07-19 23:21:11,974 INFO L226 Difference]: Without dead ends: 33 [2020-07-19 23:21:11,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-19 23:21:11,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-07-19 23:21:11,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2020-07-19 23:21:11,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-19 23:21:11,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-07-19 23:21:11,981 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 11 [2020-07-19 23:21:11,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:21:11,981 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-07-19 23:21:11,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 23:21:11,981 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-07-19 23:21:11,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-19 23:21:11,982 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:21:11,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:21:11,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 23:21:11,983 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:21:11,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:21:11,983 INFO L82 PathProgramCache]: Analyzing trace with hash 59124385, now seen corresponding path program 1 times [2020-07-19 23:21:11,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:21:11,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704577558] [2020-07-19 23:21:11,984 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6d76ca87 [2020-07-19 23:21:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:21:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:21:12,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:21:12,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704577558] [2020-07-19 23:21:12,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:21:12,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-19 23:21:12,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280220253] [2020-07-19 23:21:12,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-19 23:21:12,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:21:12,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-19 23:21:12,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-19 23:21:12,129 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 6 states. [2020-07-19 23:21:12,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:21:12,281 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-07-19 23:21:12,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-19 23:21:12,282 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-07-19 23:21:12,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:21:12,283 INFO L225 Difference]: With dead ends: 51 [2020-07-19 23:21:12,283 INFO L226 Difference]: Without dead ends: 49 [2020-07-19 23:21:12,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-19 23:21:12,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-07-19 23:21:12,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 32. [2020-07-19 23:21:12,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-19 23:21:12,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-07-19 23:21:12,292 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 14 [2020-07-19 23:21:12,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:21:12,292 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-07-19 23:21:12,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-19 23:21:12,292 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-07-19 23:21:12,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-19 23:21:12,293 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:21:12,293 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:21:12,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-19 23:21:12,294 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:21:12,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:21:12,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1951969173, now seen corresponding path program 1 times [2020-07-19 23:21:12,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:21:12,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963688205] [2020-07-19 23:21:12,295 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6d76ca87 [2020-07-19 23:21:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:21:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:21:12,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:21:12,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963688205] [2020-07-19 23:21:12,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418051506] [2020-07-19 23:21:12,557 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3632a239 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:21:12,726 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3632a239 issued 2 check-sat command(s) [2020-07-19 23:21:12,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:21:12,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 34 conjunts are in the unsatisfiable core [2020-07-19 23:21:12,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:21:12,804 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 [2020-07-19 23:21:12,805 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:21:12,818 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:21:12,823 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 [2020-07-19 23:21:12,824 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-19 23:21:12,834 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:21:12,835 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:21:12,835 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:24 [2020-07-19 23:21:12,895 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:21:12,896 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-07-19 23:21:12,898 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:21:12,947 INFO L624 ElimStorePlain]: treesize reduction 14, result has 81.1 percent of original size [2020-07-19 23:21:12,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-19 23:21:12,959 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-19 23:21:12,960 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-19 23:21:12,991 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:21:13,006 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-19 23:21:13,006 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-19 23:21:13,024 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:21:13,026 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. [2020-07-19 23:21:13,026 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:62, output treesize:27 [2020-07-19 23:21:13,109 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:21:13,109 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2020-07-19 23:21:13,111 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:21:13,146 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:21:13,149 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_26|, |v_#memory_int_25|], 4=[|v_#memory_int_28|]} [2020-07-19 23:21:13,155 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-19 23:21:13,181 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:21:13,184 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-19 23:21:13,202 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:21:13,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-19 23:21:13,230 INFO L350 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2020-07-19 23:21:13,231 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 45 [2020-07-19 23:21:13,232 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-19 23:21:13,254 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:21:13,259 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-07-19 23:21:13,259 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:80, output treesize:43 [2020-07-19 23:21:13,369 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2020-07-19 23:21:13,370 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:21:13,378 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:21:13,379 INFO L544 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:21:13,379 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:45, output treesize:3 [2020-07-19 23:21:13,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:21:13,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:21:13,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2020-07-19 23:21:13,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666373637] [2020-07-19 23:21:13,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-19 23:21:13,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:21:13,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-19 23:21:13,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-07-19 23:21:13,385 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 12 states. [2020-07-19 23:21:15,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:21:15,943 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2020-07-19 23:21:15,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-19 23:21:15,944 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2020-07-19 23:21:15,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:21:15,945 INFO L225 Difference]: With dead ends: 64 [2020-07-19 23:21:15,945 INFO L226 Difference]: Without dead ends: 62 [2020-07-19 23:21:15,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2020-07-19 23:21:15,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-07-19 23:21:15,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 23. [2020-07-19 23:21:15,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-19 23:21:15,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-07-19 23:21:15,952 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 17 [2020-07-19 23:21:15,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:21:15,952 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-07-19 23:21:15,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-19 23:21:15,952 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-07-19 23:21:15,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-19 23:21:15,953 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:21:15,953 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:21:16,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:21:16,167 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:21:16,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:21:16,167 INFO L82 PathProgramCache]: Analyzing trace with hash -506610811, now seen corresponding path program 1 times [2020-07-19 23:21:16,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:21:16,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239622285] [2020-07-19 23:21:16,169 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6d76ca87 [2020-07-19 23:21:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:21:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:21:16,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:21:16,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239622285] [2020-07-19 23:21:16,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:21:16,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-19 23:21:16,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160385434] [2020-07-19 23:21:16,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-19 23:21:16,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:21:16,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-19 23:21:16,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-19 23:21:16,279 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 6 states. [2020-07-19 23:21:16,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:21:16,383 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-07-19 23:21:16,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-19 23:21:16,383 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-07-19 23:21:16,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:21:16,384 INFO L225 Difference]: With dead ends: 39 [2020-07-19 23:21:16,384 INFO L226 Difference]: Without dead ends: 31 [2020-07-19 23:21:16,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-19 23:21:16,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-19 23:21:16,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2020-07-19 23:21:16,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-19 23:21:16,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-07-19 23:21:16,390 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 19 [2020-07-19 23:21:16,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:21:16,390 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-07-19 23:21:16,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-19 23:21:16,391 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-07-19 23:21:16,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-19 23:21:16,391 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:21:16,391 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:21:16,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-19 23:21:16,392 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:21:16,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:21:16,392 INFO L82 PathProgramCache]: Analyzing trace with hash -506551229, now seen corresponding path program 1 times [2020-07-19 23:21:16,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:21:16,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953692374] [2020-07-19 23:21:16,393 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6d76ca87 [2020-07-19 23:21:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 23:21:16,404 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 23:21:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 23:21:16,412 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 23:21:16,432 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-19 23:21:16,432 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-19 23:21:16,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-19 23:21:16,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 11:21:16 BoogieIcfgContainer [2020-07-19 23:21:16,460 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 23:21:16,462 INFO L168 Benchmark]: Toolchain (without parser) took 6466.71 ms. Allocated memory was 140.0 MB in the beginning and 245.4 MB in the end (delta: 105.4 MB). Free memory was 103.1 MB in the beginning and 190.5 MB in the end (delta: -87.4 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2020-07-19 23:21:16,463 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-19 23:21:16,464 INFO L168 Benchmark]: CACSL2BoogieTranslator took 581.33 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 102.7 MB in the beginning and 171.2 MB in the end (delta: -68.5 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-07-19 23:21:16,464 INFO L168 Benchmark]: Boogie Preprocessor took 66.36 ms. Allocated memory is still 203.9 MB. Free memory was 171.2 MB in the beginning and 167.3 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-07-19 23:21:16,465 INFO L168 Benchmark]: RCFGBuilder took 607.18 ms. Allocated memory is still 203.9 MB. Free memory was 167.3 MB in the beginning and 122.2 MB in the end (delta: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2020-07-19 23:21:16,466 INFO L168 Benchmark]: TraceAbstraction took 5206.81 ms. Allocated memory was 203.9 MB in the beginning and 245.4 MB in the end (delta: 41.4 MB). Free memory was 122.2 MB in the beginning and 190.5 MB in the end (delta: -68.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-19 23:21:16,469 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 581.33 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 102.7 MB in the beginning and 171.2 MB in the end (delta: -68.5 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 66.36 ms. Allocated memory is still 203.9 MB. Free memory was 171.2 MB in the beginning and 167.3 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 607.18 ms. Allocated memory is still 203.9 MB. Free memory was 167.3 MB in the beginning and 122.2 MB in the end (delta: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5206.81 ms. Allocated memory was 203.9 MB in the beginning and 245.4 MB in the end (delta: 41.4 MB). Free memory was 122.2 MB in the beginning and 190.5 MB in the end (delta: -68.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1038]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L995] SLL* list = malloc(sizeof(SLL)); [L996] list->next = ((void*)0) [L997] list->colour = BLACK [L999] SLL* end = list; VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1002] COND FALSE !(__VERIFIER_nondet_int()) [L1023] end = ((void*)0) [L1024] end = list VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1027] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1028] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1028] COND FALSE !(!(BLACK == end->colour)) [L1030] COND TRUE ((void*)0) != end [L1032] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1032] COND FALSE !(RED == end->colour) [L1038] EXPR end->next VAL [end={-1:0}, end->next={0:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1038] COND TRUE !(end->next) [L1038] __VERIFIER_error() VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 34 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.1s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 134 SDtfs, 148 SDslu, 286 SDs, 0 SdLazy, 416 SolverSat, 46 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 70 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 107 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 82 ConstructedInterpolants, 6 QuantifiedInterpolants, 10406 SizeOfPredicates, 11 NumberOfNonLiveVariables, 80 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 0/4 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...