java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/heap-data/cart.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 00:11:22,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 00:11:22,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 00:11:22,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 00:11:22,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 00:11:22,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 00:11:22,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 00:11:22,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 00:11:22,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 00:11:22,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 00:11:22,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 00:11:22,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 00:11:22,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 00:11:22,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 00:11:22,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 00:11:22,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 00:11:22,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 00:11:22,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 00:11:22,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 00:11:22,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 00:11:22,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 00:11:22,728 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 00:11:22,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 00:11:22,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 00:11:22,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 00:11:22,734 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 00:11:22,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 00:11:22,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 00:11:22,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 00:11:22,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 00:11:22,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 00:11:22,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 00:11:22,741 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 00:11:22,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 00:11:22,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 00:11:22,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 00:11:22,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 00:11:22,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 00:11:22,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 00:11:22,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 00:11:22,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 00:11:22,752 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 [2019-10-15 00:11:22,770 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 00:11:22,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 00:11:22,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 00:11:22,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 00:11:22,772 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 00:11:22,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 00:11:22,773 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 00:11:22,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 00:11:22,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 00:11:22,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 00:11:22,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 00:11:22,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 00:11:22,775 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 00:11:22,775 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 00:11:22,775 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 00:11:22,776 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 00:11:22,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 00:11:22,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 00:11:22,776 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 00:11:22,776 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 00:11:22,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 00:11:22,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 00:11:22,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 00:11:22,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 00:11:22,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 00:11:22,778 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 00:11:22,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 00:11:22,778 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 00:11:22,778 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 00:11:23,060 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 00:11:23,082 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 00:11:23,086 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 00:11:23,088 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 00:11:23,088 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 00:11:23,089 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/cart.i [2019-10-15 00:11:23,172 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef5254132/86933f9d563c4e1a9b5f70c79d10d63d/FLAGbca38e1ec [2019-10-15 00:11:23,728 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 00:11:23,729 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-data/cart.i [2019-10-15 00:11:23,751 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef5254132/86933f9d563c4e1a9b5f70c79d10d63d/FLAGbca38e1ec [2019-10-15 00:11:24,024 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef5254132/86933f9d563c4e1a9b5f70c79d10d63d [2019-10-15 00:11:24,036 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 00:11:24,040 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 00:11:24,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 00:11:24,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 00:11:24,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 00:11:24,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:11:24" (1/1) ... [2019-10-15 00:11:24,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@625afbb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:11:24, skipping insertion in model container [2019-10-15 00:11:24,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:11:24" (1/1) ... [2019-10-15 00:11:24,062 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 00:11:24,118 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 00:11:24,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 00:11:24,583 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 00:11:24,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 00:11:24,679 INFO L192 MainTranslator]: Completed translation [2019-10-15 00:11:24,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:11:24 WrapperNode [2019-10-15 00:11:24,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 00:11:24,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 00:11:24,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 00:11:24,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 00:11:24,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:11:24" (1/1) ... [2019-10-15 00:11:24,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:11:24" (1/1) ... [2019-10-15 00:11:24,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:11:24" (1/1) ... [2019-10-15 00:11:24,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:11:24" (1/1) ... [2019-10-15 00:11:24,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:11:24" (1/1) ... [2019-10-15 00:11:24,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:11:24" (1/1) ... [2019-10-15 00:11:24,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:11:24" (1/1) ... [2019-10-15 00:11:24,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 00:11:24,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 00:11:24,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 00:11:24,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 00:11:24,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:11:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 00:11:24,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 00:11:24,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 00:11:24,799 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-15 00:11:24,799 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-15 00:11:24,799 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 00:11:24,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 00:11:24,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 00:11:24,800 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-15 00:11:24,800 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-15 00:11:24,801 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-15 00:11:24,801 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-15 00:11:24,801 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-15 00:11:24,801 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-15 00:11:24,802 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-15 00:11:24,802 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-15 00:11:24,802 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-15 00:11:24,804 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-15 00:11:24,804 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-15 00:11:24,804 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-15 00:11:24,804 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-15 00:11:24,804 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-15 00:11:24,804 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-15 00:11:24,805 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-15 00:11:24,805 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-15 00:11:24,805 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-15 00:11:24,805 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-15 00:11:24,805 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-15 00:11:24,806 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-15 00:11:24,806 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-15 00:11:24,806 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-15 00:11:24,806 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-15 00:11:24,806 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-15 00:11:24,806 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-15 00:11:24,806 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-15 00:11:24,807 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-15 00:11:24,807 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-15 00:11:24,807 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-15 00:11:24,807 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-15 00:11:24,808 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-15 00:11:24,808 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-15 00:11:24,808 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-15 00:11:24,808 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-15 00:11:24,808 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-15 00:11:24,808 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-15 00:11:24,808 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-15 00:11:24,809 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-15 00:11:24,809 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-15 00:11:24,809 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-15 00:11:24,809 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-15 00:11:24,809 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-15 00:11:24,809 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-15 00:11:24,810 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-15 00:11:24,810 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-15 00:11:24,810 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-15 00:11:24,810 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-15 00:11:24,810 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-15 00:11:24,810 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-15 00:11:24,810 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-15 00:11:24,811 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-15 00:11:24,811 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 00:11:24,811 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 00:11:24,811 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-15 00:11:24,811 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 00:11:24,812 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-15 00:11:24,812 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-15 00:11:24,812 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-15 00:11:24,812 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-15 00:11:24,812 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-15 00:11:24,813 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-15 00:11:24,813 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-15 00:11:24,814 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-15 00:11:24,814 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-15 00:11:24,814 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 00:11:24,815 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-15 00:11:24,815 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-15 00:11:24,815 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-15 00:11:24,815 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-15 00:11:24,815 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-15 00:11:24,815 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-15 00:11:24,816 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-15 00:11:24,817 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-15 00:11:24,817 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-15 00:11:24,817 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-15 00:11:24,817 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-15 00:11:24,817 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-15 00:11:24,818 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-15 00:11:24,818 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-15 00:11:24,819 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-15 00:11:24,819 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-15 00:11:24,820 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-15 00:11:24,820 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-15 00:11:24,820 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-15 00:11:24,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-15 00:11:24,820 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-15 00:11:24,820 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-15 00:11:24,820 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-15 00:11:24,821 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-15 00:11:24,821 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-15 00:11:24,821 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-15 00:11:24,821 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-15 00:11:24,821 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-15 00:11:24,821 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-15 00:11:24,821 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-15 00:11:24,822 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-15 00:11:24,822 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-15 00:11:24,822 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-15 00:11:24,822 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-15 00:11:24,822 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-15 00:11:24,822 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-15 00:11:24,822 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-15 00:11:24,823 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-15 00:11:24,823 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-15 00:11:24,823 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 00:11:24,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 00:11:24,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 00:11:24,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 00:11:24,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 00:11:24,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 00:11:24,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 00:11:24,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 00:11:24,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 00:11:25,340 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 00:11:25,340 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-15 00:11:25,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:11:25 BoogieIcfgContainer [2019-10-15 00:11:25,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 00:11:25,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 00:11:25,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 00:11:25,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 00:11:25,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:11:24" (1/3) ... [2019-10-15 00:11:25,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@163c7bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:11:25, skipping insertion in model container [2019-10-15 00:11:25,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:11:24" (2/3) ... [2019-10-15 00:11:25,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@163c7bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:11:25, skipping insertion in model container [2019-10-15 00:11:25,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:11:25" (3/3) ... [2019-10-15 00:11:25,352 INFO L109 eAbstractionObserver]: Analyzing ICFG cart.i [2019-10-15 00:11:25,363 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 00:11:25,372 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 00:11:25,384 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 00:11:25,413 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 00:11:25,413 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 00:11:25,413 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 00:11:25,414 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 00:11:25,414 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 00:11:25,414 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 00:11:25,414 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 00:11:25,415 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 00:11:25,433 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-10-15 00:11:25,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-15 00:11:25,440 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:11:25,441 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:11:25,443 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:11:25,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:11:25,449 INFO L82 PathProgramCache]: Analyzing trace with hash -823366723, now seen corresponding path program 1 times [2019-10-15 00:11:25,459 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:11:25,459 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431790670] [2019-10-15 00:11:25,459 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:11:25,460 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:11:25,460 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:11:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:11:25,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:11:25,597 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431790670] [2019-10-15 00:11:25,598 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:11:25,599 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 00:11:25,599 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911326689] [2019-10-15 00:11:25,604 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 00:11:25,606 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:11:25,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 00:11:25,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 00:11:25,621 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2019-10-15 00:11:25,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:11:25,640 INFO L93 Difference]: Finished difference Result 40 states and 55 transitions. [2019-10-15 00:11:25,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 00:11:25,642 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-10-15 00:11:25,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:11:25,652 INFO L225 Difference]: With dead ends: 40 [2019-10-15 00:11:25,652 INFO L226 Difference]: Without dead ends: 21 [2019-10-15 00:11:25,656 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 00:11:25,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-15 00:11:25,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-15 00:11:25,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-15 00:11:25,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2019-10-15 00:11:25,696 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 13 [2019-10-15 00:11:25,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:11:25,697 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2019-10-15 00:11:25,697 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 00:11:25,697 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2019-10-15 00:11:25,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-15 00:11:25,698 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:11:25,698 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:11:25,698 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:11:25,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:11:25,699 INFO L82 PathProgramCache]: Analyzing trace with hash -631360303, now seen corresponding path program 1 times [2019-10-15 00:11:25,699 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:11:25,699 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209810566] [2019-10-15 00:11:25,700 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:11:25,700 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:11:25,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:11:25,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:11:25,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:11:25,806 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209810566] [2019-10-15 00:11:25,806 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:11:25,807 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 00:11:25,807 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646356555] [2019-10-15 00:11:25,809 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 00:11:25,809 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:11:25,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 00:11:25,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 00:11:25,810 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand 4 states. [2019-10-15 00:11:25,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:11:25,902 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2019-10-15 00:11:25,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 00:11:25,904 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-10-15 00:11:25,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:11:25,905 INFO L225 Difference]: With dead ends: 40 [2019-10-15 00:11:25,906 INFO L226 Difference]: Without dead ends: 25 [2019-10-15 00:11:25,907 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 00:11:25,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-15 00:11:25,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-10-15 00:11:25,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-15 00:11:25,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2019-10-15 00:11:25,913 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 16 [2019-10-15 00:11:25,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:11:25,914 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2019-10-15 00:11:25,914 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 00:11:25,914 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2019-10-15 00:11:25,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-15 00:11:25,915 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:11:25,915 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:11:25,915 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:11:25,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:11:25,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1765605417, now seen corresponding path program 1 times [2019-10-15 00:11:25,916 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:11:25,916 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862243471] [2019-10-15 00:11:25,916 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:11:25,916 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:11:25,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:11:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:11:26,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:11:26,069 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862243471] [2019-10-15 00:11:26,070 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:11:26,070 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 00:11:26,074 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734821303] [2019-10-15 00:11:26,075 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 00:11:26,075 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:11:26,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 00:11:26,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 00:11:26,076 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand 4 states. [2019-10-15 00:11:26,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:11:26,145 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2019-10-15 00:11:26,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 00:11:26,145 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2019-10-15 00:11:26,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:11:26,146 INFO L225 Difference]: With dead ends: 40 [2019-10-15 00:11:26,147 INFO L226 Difference]: Without dead ends: 34 [2019-10-15 00:11:26,147 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 00:11:26,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-15 00:11:26,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2019-10-15 00:11:26,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-15 00:11:26,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2019-10-15 00:11:26,154 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 20 [2019-10-15 00:11:26,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:11:26,155 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2019-10-15 00:11:26,155 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 00:11:26,155 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2019-10-15 00:11:26,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-15 00:11:26,156 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:11:26,156 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:11:26,156 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:11:26,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:11:26,157 INFO L82 PathProgramCache]: Analyzing trace with hash -585146460, now seen corresponding path program 1 times [2019-10-15 00:11:26,157 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:11:26,157 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384544866] [2019-10-15 00:11:26,157 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:11:26,158 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:11:26,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:11:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:11:26,212 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 00:11:26,213 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384544866] [2019-10-15 00:11:26,213 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:11:26,213 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 00:11:26,213 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861751292] [2019-10-15 00:11:26,214 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 00:11:26,214 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:11:26,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 00:11:26,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:11:26,214 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand 3 states. [2019-10-15 00:11:26,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:11:26,239 INFO L93 Difference]: Finished difference Result 41 states and 54 transitions. [2019-10-15 00:11:26,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 00:11:26,240 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-10-15 00:11:26,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:11:26,243 INFO L225 Difference]: With dead ends: 41 [2019-10-15 00:11:26,243 INFO L226 Difference]: Without dead ends: 31 [2019-10-15 00:11:26,244 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:11:26,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-15 00:11:26,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-10-15 00:11:26,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-15 00:11:26,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2019-10-15 00:11:26,259 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 24 [2019-10-15 00:11:26,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:11:26,259 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2019-10-15 00:11:26,261 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 00:11:26,261 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2019-10-15 00:11:26,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-15 00:11:26,263 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:11:26,263 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:11:26,263 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:11:26,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:11:26,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1394493086, now seen corresponding path program 1 times [2019-10-15 00:11:26,265 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:11:26,265 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741818136] [2019-10-15 00:11:26,265 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:11:26,266 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:11:26,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:11:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:11:26,607 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:11:26,608 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741818136] [2019-10-15 00:11:26,608 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175885143] [2019-10-15 00:11:26,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-10-15 00:11:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:11:26,739 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-15 00:11:26,748 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 00:11:26,784 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 00:11:27,021 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:11:27,022 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:277) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive$TermWalker.walk(NonRecursive.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:195) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder.(ArrayOccurrenceAnalysis.java:181) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.(ArrayOccurrenceAnalysis.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.downgradeDimensionsIfNecessary(ArrayOccurrenceAnalysis.java:171) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:132) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.(ArrayIndexBasedCostEstimation.java:64) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:390) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) ... 21 more [2019-10-15 00:11:27,031 INFO L168 Benchmark]: Toolchain (without parser) took 2992.90 ms. Allocated memory was 138.9 MB in the beginning and 235.9 MB in the end (delta: 97.0 MB). Free memory was 102.8 MB in the beginning and 130.5 MB in the end (delta: -27.7 MB). Peak memory consumption was 69.3 MB. Max. memory is 7.1 GB. [2019-10-15 00:11:27,033 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory is still 121.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-15 00:11:27,037 INFO L168 Benchmark]: CACSL2BoogieTranslator took 637.09 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 102.4 MB in the beginning and 169.2 MB in the end (delta: -66.8 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2019-10-15 00:11:27,038 INFO L168 Benchmark]: Boogie Preprocessor took 62.21 ms. Allocated memory is still 202.4 MB. Free memory was 169.2 MB in the beginning and 165.7 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2019-10-15 00:11:27,042 INFO L168 Benchmark]: RCFGBuilder took 599.24 ms. Allocated memory is still 202.4 MB. Free memory was 165.7 MB in the beginning and 125.1 MB in the end (delta: 40.6 MB). Peak memory consumption was 40.6 MB. Max. memory is 7.1 GB. [2019-10-15 00:11:27,050 INFO L168 Benchmark]: TraceAbstraction took 1685.18 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 124.1 MB in the beginning and 130.5 MB in the end (delta: -6.4 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2019-10-15 00:11:27,053 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory is still 121.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 637.09 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 102.4 MB in the beginning and 169.2 MB in the end (delta: -66.8 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.21 ms. Allocated memory is still 202.4 MB. Free memory was 169.2 MB in the beginning and 165.7 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 599.24 ms. Allocated memory is still 202.4 MB. Free memory was 165.7 MB in the beginning and 125.1 MB in the end (delta: 40.6 MB). Peak memory consumption was 40.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1685.18 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 124.1 MB in the beginning and 130.5 MB in the end (delta: -6.4 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.NullPointerException de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.NullPointerException: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...