/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:30:59,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:30:59,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:30:59,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:30:59,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:30:59,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:30:59,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:30:59,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:30:59,162 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:30:59,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:30:59,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:30:59,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:30:59,169 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:30:59,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:30:59,175 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:30:59,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:30:59,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:30:59,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:30:59,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:30:59,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:30:59,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:30:59,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:30:59,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:30:59,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:30:59,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 13:30:59,204 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 13:30:59,204 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 13:30:59,205 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 13:30:59,206 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 13:30:59,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 13:30:59,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 13:30:59,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 13:30:59,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 13:30:59,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 13:30:59,219 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 13:30:59,219 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 13:30:59,220 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 13:30:59,220 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 13:30:59,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:30:59,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:30:59,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:30:59,225 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 13:30:59,271 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:30:59,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:30:59,274 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:30:59,274 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:30:59,274 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:30:59,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:30:59,275 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:30:59,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:30:59,275 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:30:59,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:30:59,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:30:59,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:30:59,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:30:59,277 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:30:59,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:30:59,277 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:30:59,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:30:59,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:30:59,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:30:59,278 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:30:59,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:30:59,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:30:59,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:30:59,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:30:59,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:30:59,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:30:59,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:30:59,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:30:59,280 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:30:59,280 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:30:59,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:30:59,759 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:30:59,766 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:30:59,768 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:30:59,768 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:30:59,770 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-09-04 13:30:59,865 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82fc0c047/a2d985a996b44aa89b2a7485c435c0b9/FLAGd3c3e3e92 [2020-09-04 13:31:00,530 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:31:00,531 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-09-04 13:31:00,551 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82fc0c047/a2d985a996b44aa89b2a7485c435c0b9/FLAGd3c3e3e92 [2020-09-04 13:31:00,818 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82fc0c047/a2d985a996b44aa89b2a7485c435c0b9 [2020-09-04 13:31:00,832 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:31:00,834 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:31:00,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:31:00,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:31:00,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:31:00,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:31:00" (1/1) ... [2020-09-04 13:31:00,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42e25ac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:31:00, skipping insertion in model container [2020-09-04 13:31:00,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:31:00" (1/1) ... [2020-09-04 13:31:00,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:31:00,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:31:01,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:31:01,443 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:31:01,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:31:01,561 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:31:01,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:31:01 WrapperNode [2020-09-04 13:31:01,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:31:01,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:31:01,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:31:01,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:31:01,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:31:01" (1/1) ... [2020-09-04 13:31:01,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:31:01" (1/1) ... [2020-09-04 13:31:01,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:31:01" (1/1) ... [2020-09-04 13:31:01,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:31:01" (1/1) ... [2020-09-04 13:31:01,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:31:01" (1/1) ... [2020-09-04 13:31:01,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:31:01" (1/1) ... [2020-09-04 13:31:01,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:31:01" (1/1) ... [2020-09-04 13:31:01,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:31:01,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:31:01,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:31:01,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:31:01,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:31:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:31:01,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:31:01,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:31:01,721 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:31:01,721 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-04 13:31:01,721 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-04 13:31:01,721 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-04 13:31:01,722 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-04 13:31:01,722 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-04 13:31:01,722 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-04 13:31:01,722 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-04 13:31:01,722 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-04 13:31:01,722 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-04 13:31:01,723 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-04 13:31:01,723 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-04 13:31:01,723 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-04 13:31:01,723 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-04 13:31:01,724 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-04 13:31:01,724 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-04 13:31:01,724 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-04 13:31:01,724 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-04 13:31:01,724 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-04 13:31:01,725 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-04 13:31:01,725 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-04 13:31:01,725 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-04 13:31:01,725 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-04 13:31:01,726 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-04 13:31:01,726 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-04 13:31:01,726 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-04 13:31:01,726 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-04 13:31:01,726 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-04 13:31:01,726 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-04 13:31:01,727 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-04 13:31:01,727 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-04 13:31:01,727 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-04 13:31:01,727 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-04 13:31:01,727 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-04 13:31:01,727 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-04 13:31:01,728 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-04 13:31:01,728 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-04 13:31:01,728 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-04 13:31:01,728 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-04 13:31:01,728 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-04 13:31:01,728 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-04 13:31:01,729 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-04 13:31:01,729 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-04 13:31:01,729 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-04 13:31:01,729 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-04 13:31:01,729 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-04 13:31:01,729 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-04 13:31:01,729 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-04 13:31:01,729 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-04 13:31:01,729 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-04 13:31:01,730 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-04 13:31:01,730 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 13:31:01,730 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-04 13:31:01,730 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-04 13:31:01,730 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 13:31:01,730 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-04 13:31:01,730 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-04 13:31:01,730 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-04 13:31:01,730 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-04 13:31:01,731 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-04 13:31:01,731 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 13:31:01,731 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-04 13:31:01,731 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-04 13:31:01,731 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-04 13:31:01,731 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-04 13:31:01,732 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-04 13:31:01,732 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-04 13:31:01,732 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-04 13:31:01,732 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-04 13:31:01,732 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-04 13:31:01,732 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-04 13:31:01,733 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-04 13:31:01,733 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-04 13:31:01,733 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-04 13:31:01,733 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-04 13:31:01,733 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-04 13:31:01,733 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-04 13:31:01,733 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-04 13:31:01,734 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-04 13:31:01,734 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-04 13:31:01,734 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-04 13:31:01,734 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-04 13:31:01,734 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-04 13:31:01,734 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-04 13:31:01,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-04 13:31:01,735 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-04 13:31:01,735 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-04 13:31:01,735 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-04 13:31:01,735 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-04 13:31:01,735 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-04 13:31:01,735 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-04 13:31:01,736 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-04 13:31:01,736 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-04 13:31:01,736 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-04 13:31:01,736 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-04 13:31:01,736 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-04 13:31:01,736 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-04 13:31:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-04 13:31:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-04 13:31:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-04 13:31:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-04 13:31:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-04 13:31:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-04 13:31:01,738 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-04 13:31:01,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:31:01,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:31:01,738 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:31:01,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 13:31:01,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 13:31:01,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 13:31:01,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 13:31:01,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 13:31:01,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 13:31:01,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:31:01,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:31:02,313 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:31:02,313 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-09-04 13:31:02,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:31:02 BoogieIcfgContainer [2020-09-04 13:31:02,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:31:02,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:31:02,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:31:02,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:31:02,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:31:00" (1/3) ... [2020-09-04 13:31:02,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb1c007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:31:02, skipping insertion in model container [2020-09-04 13:31:02,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:31:01" (2/3) ... [2020-09-04 13:31:02,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb1c007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:31:02, skipping insertion in model container [2020-09-04 13:31:02,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:31:02" (3/3) ... [2020-09-04 13:31:02,329 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2020-09-04 13:31:02,339 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:31:02,350 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-09-04 13:31:02,373 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-04 13:31:02,403 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:31:02,403 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:31:02,403 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:31:02,403 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:31:02,403 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:31:02,404 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:31:02,404 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:31:02,404 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:31:02,425 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-09-04 13:31:02,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-04 13:31:02,432 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:31:02,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:31:02,434 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:31:02,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:31:02,441 INFO L82 PathProgramCache]: Analyzing trace with hash -742552803, now seen corresponding path program 1 times [2020-09-04 13:31:02,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:31:02,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361200528] [2020-09-04 13:31:02,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:31:02,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:02,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:31:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:02,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:31:02,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361200528] [2020-09-04 13:31:02,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:31:02,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:31:02,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598429830] [2020-09-04 13:31:02,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:31:02,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:31:02,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:31:02,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:31:02,714 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-09-04 13:31:02,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:31:02,897 INFO L93 Difference]: Finished difference Result 67 states and 104 transitions. [2020-09-04 13:31:02,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:31:02,901 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-04 13:31:02,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:31:02,919 INFO L225 Difference]: With dead ends: 67 [2020-09-04 13:31:02,919 INFO L226 Difference]: Without dead ends: 31 [2020-09-04 13:31:02,925 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 [2020-09-04 13:31:02,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-04 13:31:02,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-04 13:31:02,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-04 13:31:02,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-09-04 13:31:02,988 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 10 [2020-09-04 13:31:02,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:31:02,988 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-09-04 13:31:02,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:31:02,989 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-09-04 13:31:02,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-04 13:31:02,989 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:31:02,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:31:02,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:31:02,990 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:31:02,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:31:02,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1556669446, now seen corresponding path program 1 times [2020-09-04 13:31:02,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:31:02,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223207109] [2020-09-04 13:31:02,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:31:03,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:03,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:31:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:03,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:31:03,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223207109] [2020-09-04 13:31:03,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:31:03,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 13:31:03,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669780592] [2020-09-04 13:31:03,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:31:03,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:31:03,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:31:03,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:31:03,188 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 5 states. [2020-09-04 13:31:03,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:31:03,326 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-09-04 13:31:03,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 13:31:03,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-09-04 13:31:03,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:31:03,328 INFO L225 Difference]: With dead ends: 37 [2020-09-04 13:31:03,328 INFO L226 Difference]: Without dead ends: 35 [2020-09-04 13:31:03,329 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 [2020-09-04 13:31:03,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-04 13:31:03,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2020-09-04 13:31:03,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-09-04 13:31:03,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-09-04 13:31:03,337 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 11 [2020-09-04 13:31:03,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:31:03,338 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-09-04 13:31:03,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:31:03,338 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-09-04 13:31:03,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-04 13:31:03,339 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:31:03,339 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:31:03,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 13:31:03,340 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:31:03,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:31:03,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1973625457, now seen corresponding path program 1 times [2020-09-04 13:31:03,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:31:03,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562986000] [2020-09-04 13:31:03,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:31:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:03,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:31:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:03,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:31:03,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562986000] [2020-09-04 13:31:03,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:31:03,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 13:31:03,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267214967] [2020-09-04 13:31:03,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 13:31:03,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:31:03,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 13:31:03,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 13:31:03,563 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 6 states. [2020-09-04 13:31:03,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:31:03,737 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-09-04 13:31:03,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 13:31:03,738 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-09-04 13:31:03,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:31:03,740 INFO L225 Difference]: With dead ends: 54 [2020-09-04 13:31:03,740 INFO L226 Difference]: Without dead ends: 52 [2020-09-04 13:31:03,740 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 [2020-09-04 13:31:03,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-04 13:31:03,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 36. [2020-09-04 13:31:03,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-04 13:31:03,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-09-04 13:31:03,749 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 14 [2020-09-04 13:31:03,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:31:03,750 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-09-04 13:31:03,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 13:31:03,750 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-09-04 13:31:03,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-04 13:31:03,751 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:31:03,751 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:31:03,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 13:31:03,752 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:31:03,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:31:03,752 INFO L82 PathProgramCache]: Analyzing trace with hash -954667545, now seen corresponding path program 1 times [2020-09-04 13:31:03,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:31:03,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182476860] [2020-09-04 13:31:03,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:31:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:03,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:31:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:03,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:31:03,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182476860] [2020-09-04 13:31:04,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516161904] [2020-09-04 13:31:04,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:31:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:04,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 32 conjunts are in the unsatisfiable core [2020-09-04 13:31:04,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:31:04,301 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-09-04 13:31:04,302 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2020-09-04 13:31:04,304 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:04,320 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:04,327 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-09-04 13:31:04,328 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:04,343 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:04,354 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-09-04 13:31:04,355 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:37, output treesize:30 [2020-09-04 13:31:04,491 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:04,492 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 69 [2020-09-04 13:31:04,494 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:04,566 INFO L625 ElimStorePlain]: treesize reduction 28, result has 71.4 percent of original size [2020-09-04 13:31:04,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-09-04 13:31:04,578 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2020-09-04 13:31:04,579 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:04,599 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:04,604 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2020-09-04 13:31:04,605 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:04,621 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:04,625 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-09-04 13:31:04,626 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:68, output treesize:37 [2020-09-04 13:31:04,763 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:04,763 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 37 [2020-09-04 13:31:04,766 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:04,810 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:04,812 INFO L441 ElimStorePlain]: Different costs {2=[|v_#memory_int_30|, |v_#memory_int_29|], 4=[|v_#memory_int_32|]} [2020-09-04 13:31:04,826 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-09-04 13:31:04,859 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:04,863 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-09-04 13:31:04,897 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:04,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-09-04 13:31:04,927 INFO L350 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2020-09-04 13:31:04,928 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 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 [2020-09-04 13:31:04,929 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:04,958 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:04,982 INFO L545 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-09-04 13:31:04,982 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 9 variables, input treesize:90, output treesize:40 [2020-09-04 13:31:05,225 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 37 treesize of output 13 [2020-09-04 13:31:05,230 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:05,237 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:05,240 INFO L545 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-09-04 13:31:05,240 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:49, output treesize:3 [2020-09-04 13:31:05,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:31:05,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:31:05,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2020-09-04 13:31:05,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112964112] [2020-09-04 13:31:05,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 13:31:05,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:31:05,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 13:31:05,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-04 13:31:05,250 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 12 states. [2020-09-04 13:31:14,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:31:14,049 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2020-09-04 13:31:14,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 13:31:14,050 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2020-09-04 13:31:14,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:31:14,051 INFO L225 Difference]: With dead ends: 62 [2020-09-04 13:31:14,051 INFO L226 Difference]: Without dead ends: 60 [2020-09-04 13:31:14,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-09-04 13:31:14,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-04 13:31:14,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 27. [2020-09-04 13:31:14,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-09-04 13:31:14,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-09-04 13:31:14,060 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2020-09-04 13:31:14,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:31:14,060 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-09-04 13:31:14,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 13:31:14,061 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-09-04 13:31:14,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-04 13:31:14,061 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:31:14,062 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:31:14,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:31:14,277 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:31:14,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:31:14,278 INFO L82 PathProgramCache]: Analyzing trace with hash 903516662, now seen corresponding path program 1 times [2020-09-04 13:31:14,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:31:14,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801036869] [2020-09-04 13:31:14,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:31:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:14,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:31:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:14,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:31:14,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801036869] [2020-09-04 13:31:14,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:31:14,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 13:31:14,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896599207] [2020-09-04 13:31:14,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 13:31:14,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:31:14,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 13:31:14,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 13:31:14,446 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 6 states. [2020-09-04 13:31:14,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:31:14,576 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-09-04 13:31:14,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 13:31:14,576 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-09-04 13:31:14,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:31:14,577 INFO L225 Difference]: With dead ends: 42 [2020-09-04 13:31:14,577 INFO L226 Difference]: Without dead ends: 30 [2020-09-04 13:31:14,578 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 [2020-09-04 13:31:14,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-04 13:31:14,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-09-04 13:31:14,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-09-04 13:31:14,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-09-04 13:31:14,584 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 18 [2020-09-04 13:31:14,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:31:14,584 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-09-04 13:31:14,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 13:31:14,584 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-09-04 13:31:14,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-04 13:31:14,585 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:31:14,585 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:31:14,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 13:31:14,586 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:31:14,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:31:14,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1223911862, now seen corresponding path program 1 times [2020-09-04 13:31:14,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:31:14,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557581688] [2020-09-04 13:31:14,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:31:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:14,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:31:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:14,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:31:14,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557581688] [2020-09-04 13:31:14,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937633129] [2020-09-04 13:31:14,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:31:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:14,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-04 13:31:14,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:31:14,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-09-04 13:31:14,856 INFO L350 Elim1Store]: treesize reduction 33, result has 55.4 percent of original size [2020-09-04 13:31:14,857 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 48 [2020-09-04 13:31:14,858 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:14,939 INFO L625 ElimStorePlain]: treesize reduction 16, result has 81.4 percent of original size [2020-09-04 13:31:14,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-09-04 13:31:15,006 INFO L350 Elim1Store]: treesize reduction 33, result has 55.4 percent of original size [2020-09-04 13:31:15,007 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 48 [2020-09-04 13:31:15,008 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:15,089 INFO L625 ElimStorePlain]: treesize reduction 16, result has 79.7 percent of original size [2020-09-04 13:31:15,090 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-09-04 13:31:15,090 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:77, output treesize:63 [2020-09-04 13:31:15,193 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-09-04 13:31:15,197 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-09-04 13:31:15,211 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-09-04 13:31:15,212 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:15,217 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-09-04 13:31:15,217 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:15,229 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:15,230 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2020-09-04 13:31:15,230 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:15,272 INFO L625 ElimStorePlain]: treesize reduction 12, result has 84.6 percent of original size [2020-09-04 13:31:15,276 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-09-04 13:31:15,277 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:15,293 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:15,294 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2020-09-04 13:31:15,295 INFO L545 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:15,298 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-09-04 13:31:15,299 INFO L545 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:15,320 INFO L625 ElimStorePlain]: treesize reduction 20, result has 25.9 percent of original size [2020-09-04 13:31:15,321 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-09-04 13:31:15,321 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 4 variables, input treesize:110, output treesize:7 [2020-09-04 13:31:15,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:31:15,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:31:15,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 8 [2020-09-04 13:31:15,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869730751] [2020-09-04 13:31:15,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 13:31:15,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:31:15,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 13:31:15,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-04 13:31:15,330 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 8 states. [2020-09-04 13:31:15,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:31:15,634 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-09-04 13:31:15,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 13:31:15,635 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-09-04 13:31:15,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:31:15,636 INFO L225 Difference]: With dead ends: 53 [2020-09-04 13:31:15,636 INFO L226 Difference]: Without dead ends: 31 [2020-09-04 13:31:15,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-04 13:31:15,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-04 13:31:15,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-04 13:31:15,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-04 13:31:15,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-09-04 13:31:15,643 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 21 [2020-09-04 13:31:15,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:31:15,643 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-09-04 13:31:15,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 13:31:15,643 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-09-04 13:31:15,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-04 13:31:15,644 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:31:15,644 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:31:15,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:31:15,846 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:31:15,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:31:15,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1223476830, now seen corresponding path program 1 times [2020-09-04 13:31:15,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:31:15,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735578239] [2020-09-04 13:31:15,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:31:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:16,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:31:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:16,108 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:31:16,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735578239] [2020-09-04 13:31:16,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117387258] [2020-09-04 13:31:16,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:31:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:16,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 52 conjunts are in the unsatisfiable core [2020-09-04 13:31:16,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:31:16,266 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-09-04 13:31:16,267 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2020-09-04 13:31:16,268 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:16,280 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:16,281 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-09-04 13:31:16,281 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:27 [2020-09-04 13:31:16,350 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:16,351 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 69 [2020-09-04 13:31:16,353 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:16,427 INFO L625 ElimStorePlain]: treesize reduction 28, result has 76.5 percent of original size [2020-09-04 13:31:16,434 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-09-04 13:31:16,434 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:16,468 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:16,473 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-09-04 13:31:16,474 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:16,536 INFO L625 ElimStorePlain]: treesize reduction 4, result has 93.8 percent of original size [2020-09-04 13:31:16,537 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-09-04 13:31:16,538 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:89, output treesize:61 [2020-09-04 13:31:16,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-09-04 13:31:16,749 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:16,749 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 41 [2020-09-04 13:31:16,750 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:16,838 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:16,849 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:16,850 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 209 treesize of output 150 [2020-09-04 13:31:16,851 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:16,997 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-09-04 13:31:16,998 INFO L625 ElimStorePlain]: treesize reduction 24, result has 89.5 percent of original size [2020-09-04 13:31:17,002 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-09-04 13:31:17,052 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:17,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-09-04 13:31:17,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-09-04 13:31:17,072 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 43 [2020-09-04 13:31:17,073 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:17,128 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:17,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-09-04 13:31:17,215 INFO L350 Elim1Store]: treesize reduction 33, result has 68.6 percent of original size [2020-09-04 13:31:17,216 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 104 treesize of output 107 [2020-09-04 13:31:17,221 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[9, 3, 2, 1] term [2020-09-04 13:31:17,222 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-09-04 13:31:17,228 INFO L545 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:17,304 INFO L625 ElimStorePlain]: treesize reduction 81, result has 51.5 percent of original size [2020-09-04 13:31:17,315 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 4 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-09-04 13:31:17,316 INFO L244 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:239, output treesize:93 [2020-09-04 13:31:17,456 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 10 [2020-09-04 13:31:17,457 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:17,472 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:17,474 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-09-04 13:31:17,474 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:104, output treesize:78 [2020-09-04 13:31:18,204 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:18,204 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 61 [2020-09-04 13:31:18,207 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-09-04 13:31:18,208 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-09-04 13:31:18,208 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-09-04 13:31:18,216 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:18,236 INFO L625 ElimStorePlain]: treesize reduction 36, result has 26.5 percent of original size [2020-09-04 13:31:18,238 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-09-04 13:31:18,238 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:79, output treesize:4 [2020-09-04 13:31:18,247 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:31:18,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:31:18,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2020-09-04 13:31:18,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985049378] [2020-09-04 13:31:18,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-04 13:31:18,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:31:18,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-04 13:31:18,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=193, Unknown=1, NotChecked=0, Total=240 [2020-09-04 13:31:18,253 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 16 states. [2020-09-04 13:31:19,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:31:19,145 INFO L93 Difference]: Finished difference Result 91 states and 104 transitions. [2020-09-04 13:31:19,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 13:31:19,145 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 24 [2020-09-04 13:31:19,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:31:19,151 INFO L225 Difference]: With dead ends: 91 [2020-09-04 13:31:19,152 INFO L226 Difference]: Without dead ends: 89 [2020-09-04 13:31:19,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=109, Invalid=442, Unknown=1, NotChecked=0, Total=552 [2020-09-04 13:31:19,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-04 13:31:19,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 46. [2020-09-04 13:31:19,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-04 13:31:19,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2020-09-04 13:31:19,164 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 24 [2020-09-04 13:31:19,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:31:19,164 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2020-09-04 13:31:19,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-04 13:31:19,164 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2020-09-04 13:31:19,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-04 13:31:19,165 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:31:19,165 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:31:19,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:31:19,372 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:31:19,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:31:19,373 INFO L82 PathProgramCache]: Analyzing trace with hash -2050422112, now seen corresponding path program 1 times [2020-09-04 13:31:19,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:31:19,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816360825] [2020-09-04 13:31:19,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:31:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:19,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:31:19,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:19,716 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:31:19,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816360825] [2020-09-04 13:31:19,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027269845] [2020-09-04 13:31:19,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:31:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:19,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 27 conjunts are in the unsatisfiable core [2020-09-04 13:31:19,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:31:19,837 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-09-04 13:31:19,838 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 1 case distinctions, treesize of input 9 treesize of output 11 [2020-09-04 13:31:19,838 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:19,846 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:19,847 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-09-04 13:31:19,847 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:17 [2020-09-04 13:31:19,913 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:19,913 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-09-04 13:31:19,914 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-09-04 13:31:19,919 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:19,931 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:19,936 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-09-04 13:31:19,937 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:19,951 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:19,957 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-09-04 13:31:19,957 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:19,968 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:19,973 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-09-04 13:31:19,973 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:65, output treesize:19 [2020-09-04 13:31:20,004 INFO L441 ElimStorePlain]: Different costs {0=[|v_#memory_int_33|], 2=[|v_#memory_$Pointer$.base_29|, |v_#memory_$Pointer$.offset_29|]} [2020-09-04 13:31:20,009 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2020-09-04 13:31:20,009 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:20,021 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:20,044 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:20,044 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 124 [2020-09-04 13:31:20,046 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 2, 1] term [2020-09-04 13:31:20,046 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-09-04 13:31:20,047 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:20,065 INFO L625 ElimStorePlain]: treesize reduction 40, result has 61.9 percent of original size [2020-09-04 13:31:20,069 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 47 [2020-09-04 13:31:20,070 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:20,082 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:20,083 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-09-04 13:31:20,083 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:112, output treesize:26 [2020-09-04 13:31:20,155 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2020-09-04 13:31:20,156 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:20,163 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:20,165 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 21 treesize of output 13 [2020-09-04 13:31:20,166 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:20,178 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:20,180 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-09-04 13:31:20,180 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:40, output treesize:9 [2020-09-04 13:31:20,206 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-09-04 13:31:20,206 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:20,208 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:20,209 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-09-04 13:31:20,209 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-09-04 13:31:20,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:31:20,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:31:20,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 19 [2020-09-04 13:31:20,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037719359] [2020-09-04 13:31:20,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-04 13:31:20,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:31:20,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-04 13:31:20,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2020-09-04 13:31:20,237 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand 19 states. [2020-09-04 13:31:21,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:31:21,176 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-09-04 13:31:21,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 13:31:21,177 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 24 [2020-09-04 13:31:21,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:31:21,178 INFO L225 Difference]: With dead ends: 84 [2020-09-04 13:31:21,178 INFO L226 Difference]: Without dead ends: 72 [2020-09-04 13:31:21,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2020-09-04 13:31:21,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-04 13:31:21,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 57. [2020-09-04 13:31:21,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-04 13:31:21,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2020-09-04 13:31:21,191 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 24 [2020-09-04 13:31:21,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:31:21,191 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2020-09-04 13:31:21,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-04 13:31:21,191 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2020-09-04 13:31:21,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-04 13:31:21,192 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:31:21,192 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:31:21,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:31:21,402 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:31:21,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:31:21,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1509760762, now seen corresponding path program 1 times [2020-09-04 13:31:21,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:31:21,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139830558] [2020-09-04 13:31:21,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:31:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:31:21,443 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:31:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:31:21,474 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:31:21,512 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-04 13:31:21,512 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 13:31:21,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 13:31:21,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:31:21 BoogieIcfgContainer [2020-09-04 13:31:21,560 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:31:21,562 INFO L168 Benchmark]: Toolchain (without parser) took 20728.60 ms. Allocated memory was 141.0 MB in the beginning and 319.3 MB in the end (delta: 178.3 MB). Free memory was 103.0 MB in the beginning and 242.9 MB in the end (delta: -139.9 MB). Peak memory consumption was 38.4 MB. Max. memory is 7.1 GB. [2020-09-04 13:31:21,562 INFO L168 Benchmark]: CDTParser took 0.67 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 13:31:21,563 INFO L168 Benchmark]: CACSL2BoogieTranslator took 729.01 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.8 MB in the beginning and 171.8 MB in the end (delta: -69.0 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-09-04 13:31:21,563 INFO L168 Benchmark]: Boogie Preprocessor took 76.89 ms. Allocated memory is still 205.0 MB. Free memory was 171.8 MB in the beginning and 168.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-09-04 13:31:21,563 INFO L168 Benchmark]: RCFGBuilder took 678.14 ms. Allocated memory is still 205.0 MB. Free memory was 168.5 MB in the beginning and 121.8 MB in the end (delta: 46.8 MB). Peak memory consumption was 46.8 MB. Max. memory is 7.1 GB. [2020-09-04 13:31:21,564 INFO L168 Benchmark]: TraceAbstraction took 19239.37 ms. Allocated memory was 205.0 MB in the beginning and 319.3 MB in the end (delta: 114.3 MB). Free memory was 121.1 MB in the beginning and 242.9 MB in the end (delta: -121.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 13:31:21,566 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 729.01 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.8 MB in the beginning and 171.8 MB in the end (delta: -69.0 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 76.89 ms. Allocated memory is still 205.0 MB. Free memory was 171.8 MB in the beginning and 168.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 678.14 ms. Allocated memory is still 205.0 MB. Free memory was 168.5 MB in the beginning and 121.8 MB in the end (delta: 46.8 MB). Peak memory consumption was 46.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 19239.37 ms. Allocated memory was 205.0 MB in the beginning and 319.3 MB in the end (delta: 114.3 MB). Free memory was 121.1 MB in the beginning and 242.9 MB in the end (delta: -121.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1039]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L994] SLL* null = malloc(sizeof(SLL)); [L995] null->colour = BLACK [L996] null->next = ((void*)0) [L998] SLL* list = malloc(sizeof(SLL)); [L999] list->next = null [L1000] list->colour = BLACK [L1002] SLL* end = list; VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, null={-2:0}] [L1005] COND TRUE __VERIFIER_nondet_int() [L1008] end->next = malloc(sizeof(SLL)) [L1009] EXPR end->next [L1009] end = end->next [L1010] end->next = null [L1012] COND FALSE !(__VERIFIER_nondet_int()) [L1018] end->colour = RED [L1019] end->next = malloc(sizeof(SLL)) [L1020] EXPR end->next [L1020] end = end->next [L1021] end->next = null [L1022] end->colour = BLACK VAL [end={-4:0}, list={-1:0}, malloc(sizeof(SLL))={-3:0}, malloc(sizeof(SLL))={-4:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, null={-2:0}] [L1005] COND FALSE !(__VERIFIER_nondet_int()) [L1026] end = null [L1027] end = list VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-3:0}, malloc(sizeof(SLL))={-4:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, null={-2:0}] [L1030] COND FALSE !(!(null != end)) VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-3:0}, malloc(sizeof(SLL))={-4:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, null={-2:0}] [L1031] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-3:0}, malloc(sizeof(SLL))={-4:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, null={-2:0}] [L1031] COND FALSE !(!(BLACK == end->colour)) [L1033] COND TRUE null != end [L1035] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-3:0}, malloc(sizeof(SLL))={-4:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, null={-2:0}] [L1035] COND FALSE !(RED == end->colour) [L1042] EXPR end->next [L1042] end = end->next [L1033] COND TRUE null != end [L1035] EXPR end->colour VAL [end={-3:0}, end->colour=0, list={-1:0}, malloc(sizeof(SLL))={-3:0}, malloc(sizeof(SLL))={-4:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, null={-2:0}] [L1035] COND TRUE RED == end->colour [L1037] EXPR end->next [L1037] end = end->next [L1038] COND FALSE !(!(null != end)) VAL [end={-4:0}, list={-1:0}, malloc(sizeof(SLL))={-3:0}, malloc(sizeof(SLL))={-4:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, null={-2:0}] [L1039] EXPR end->colour VAL [end={-4:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-3:0}, malloc(sizeof(SLL))={-4:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, null={-2:0}] [L1039] COND TRUE !(BLACK != end->colour) [L1039] __VERIFIER_error() VAL [end={-4:0}, list={-1:0}, malloc(sizeof(SLL))={-3:0}, malloc(sizeof(SLL))={-4:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, null={-2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 38 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 19.1s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 11.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 218 SDtfs, 359 SDslu, 815 SDs, 0 SdLazy, 1050 SolverSat, 145 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 9.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 176 GetRequests, 86 SyntacticMatches, 3 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=8, 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, 8 MinimizatonAttempts, 114 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 252 NumberOfCodeBlocks, 252 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 213 ConstructedInterpolants, 22 QuantifiedInterpolants, 87040 SizeOfPredicates, 53 NumberOfNonLiveVariables, 494 ConjunctsInSsa, 122 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 2/24 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...