/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -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-d623d84 [2020-07-21 11:23:31,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 11:23:31,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 11:23:31,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 11:23:31,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 11:23:31,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 11:23:31,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 11:23:31,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 11:23:31,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 11:23:31,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 11:23:31,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 11:23:31,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 11:23:31,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 11:23:31,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 11:23:31,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 11:23:31,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 11:23:31,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 11:23:31,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 11:23:31,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 11:23:31,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 11:23:31,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 11:23:31,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 11:23:31,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 11:23:31,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 11:23:31,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 11:23:31,087 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 11:23:31,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 11:23:31,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 11:23:31,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 11:23:31,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 11:23:31,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 11:23:31,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 11:23:31,092 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 11:23:31,096 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 11:23:31,097 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 11:23:31,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 11:23:31,098 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 11:23:31,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 11:23:31,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 11:23:31,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 11:23:31,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 11:23:31,105 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 11:23:31,134 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 11:23:31,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 11:23:31,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 11:23:31,138 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 11:23:31,138 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 11:23:31,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 11:23:31,138 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 11:23:31,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 11:23:31,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 11:23:31,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 11:23:31,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 11:23:31,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 11:23:31,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 11:23:31,141 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 11:23:31,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 11:23:31,141 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 11:23:31,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 11:23:31,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 11:23:31,142 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 11:23:31,142 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 11:23:31,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 11:23:31,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 11:23:31,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 11:23:31,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 11:23:31,143 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 11:23:31,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 11:23:31,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:31,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 11:23:31,144 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 11:23:31,144 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-21 11:23:31,521 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 11:23:31,537 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 11:23:31,544 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 11:23:31,546 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 11:23:31,551 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 11:23:31,553 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-07-21 11:23:31,630 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9dfb6245/7a65f44f5ee8467b831c691f9b19c27e/FLAGa22ddbc6a [2020-07-21 11:23:32,219 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 11:23:32,220 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-07-21 11:23:32,239 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9dfb6245/7a65f44f5ee8467b831c691f9b19c27e/FLAGa22ddbc6a [2020-07-21 11:23:32,488 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9dfb6245/7a65f44f5ee8467b831c691f9b19c27e [2020-07-21 11:23:32,498 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 11:23:32,501 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 11:23:32,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 11:23:32,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 11:23:32,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 11:23:32,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:23:32" (1/1) ... [2020-07-21 11:23:32,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13f64ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:23:32, skipping insertion in model container [2020-07-21 11:23:32,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:23:32" (1/1) ... [2020-07-21 11:23:32,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 11:23:32,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 11:23:33,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:23:33,024 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 11:23:33,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:23:33,145 INFO L208 MainTranslator]: Completed translation [2020-07-21 11:23:33,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:23:33 WrapperNode [2020-07-21 11:23:33,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 11:23:33,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 11:23:33,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 11:23:33,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 11:23:33,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:23:33" (1/1) ... [2020-07-21 11:23:33,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:23:33" (1/1) ... [2020-07-21 11:23:33,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:23:33" (1/1) ... [2020-07-21 11:23:33,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:23:33" (1/1) ... [2020-07-21 11:23:33,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:23:33" (1/1) ... [2020-07-21 11:23:33,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:23:33" (1/1) ... [2020-07-21 11:23:33,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:23:33" (1/1) ... [2020-07-21 11:23:33,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 11:23:33,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 11:23:33,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 11:23:33,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 11:23:33,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:23:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 11:23:33,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 11:23:33,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 11:23:33,310 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 11:23:33,310 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-21 11:23:33,310 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-21 11:23:33,310 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-21 11:23:33,310 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-21 11:23:33,311 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-21 11:23:33,311 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-21 11:23:33,311 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-21 11:23:33,311 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-21 11:23:33,311 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-21 11:23:33,311 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-21 11:23:33,312 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-21 11:23:33,312 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-21 11:23:33,312 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-21 11:23:33,312 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-21 11:23:33,312 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-21 11:23:33,312 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-21 11:23:33,313 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-21 11:23:33,313 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-21 11:23:33,313 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-21 11:23:33,313 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-21 11:23:33,313 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-21 11:23:33,313 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-21 11:23:33,313 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-21 11:23:33,314 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-21 11:23:33,314 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-21 11:23:33,314 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-21 11:23:33,314 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-21 11:23:33,314 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-21 11:23:33,314 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-21 11:23:33,315 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-21 11:23:33,315 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-21 11:23:33,315 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-21 11:23:33,315 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-21 11:23:33,315 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-21 11:23:33,315 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-21 11:23:33,316 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-21 11:23:33,316 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-21 11:23:33,316 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-21 11:23:33,316 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-21 11:23:33,316 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-21 11:23:33,316 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-21 11:23:33,316 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-21 11:23:33,317 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-21 11:23:33,317 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-21 11:23:33,317 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-21 11:23:33,317 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-21 11:23:33,317 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-21 11:23:33,317 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-21 11:23:33,317 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-21 11:23:33,317 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-21 11:23:33,317 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 11:23:33,317 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-21 11:23:33,318 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-21 11:23:33,318 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 11:23:33,318 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-21 11:23:33,318 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-21 11:23:33,318 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-21 11:23:33,318 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-21 11:23:33,318 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-21 11:23:33,319 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 11:23:33,319 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-21 11:23:33,319 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-21 11:23:33,319 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-21 11:23:33,319 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 11:23:33,319 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-21 11:23:33,319 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-21 11:23:33,320 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-21 11:23:33,320 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-21 11:23:33,320 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-21 11:23:33,320 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-21 11:23:33,320 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-21 11:23:33,320 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-21 11:23:33,320 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-21 11:23:33,321 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-21 11:23:33,321 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-21 11:23:33,321 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-21 11:23:33,321 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-21 11:23:33,321 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-21 11:23:33,321 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-21 11:23:33,322 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-21 11:23:33,322 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-21 11:23:33,322 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-21 11:23:33,322 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-21 11:23:33,322 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-21 11:23:33,322 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-21 11:23:33,323 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-21 11:23:33,323 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-21 11:23:33,323 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-21 11:23:33,323 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-21 11:23:33,323 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-21 11:23:33,323 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-21 11:23:33,323 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-21 11:23:33,323 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-21 11:23:33,324 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-21 11:23:33,324 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-21 11:23:33,324 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-21 11:23:33,324 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-21 11:23:33,324 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-21 11:23:33,324 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-21 11:23:33,324 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-21 11:23:33,324 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-21 11:23:33,324 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-21 11:23:33,325 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-21 11:23:33,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 11:23:33,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 11:23:33,325 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 11:23:33,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 11:23:33,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 11:23:33,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 11:23:33,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 11:23:33,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 11:23:33,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 11:23:33,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 11:23:33,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 11:23:33,899 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 11:23:33,900 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-07-21 11:23:33,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:23:33 BoogieIcfgContainer [2020-07-21 11:23:33,904 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 11:23:33,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 11:23:33,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 11:23:33,909 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 11:23:33,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:23:32" (1/3) ... [2020-07-21 11:23:33,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22716245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:23:33, skipping insertion in model container [2020-07-21 11:23:33,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:23:33" (2/3) ... [2020-07-21 11:23:33,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22716245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:23:33, skipping insertion in model container [2020-07-21 11:23:33,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:23:33" (3/3) ... [2020-07-21 11:23:33,912 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2020-07-21 11:23:33,923 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 11:23:33,930 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-07-21 11:23:33,944 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-07-21 11:23:33,965 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 11:23:33,966 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 11:23:33,966 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 11:23:33,966 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 11:23:33,966 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 11:23:33,966 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 11:23:33,966 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 11:23:33,967 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 11:23:33,983 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-07-21 11:23:33,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 11:23:33,989 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:23:33,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:23:33,990 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:23:33,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:23:33,997 INFO L82 PathProgramCache]: Analyzing trace with hash -742552803, now seen corresponding path program 1 times [2020-07-21 11:23:34,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:23:34,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359804592] [2020-07-21 11:23:34,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:23:34,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 11:23:34,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:23:34,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:23:34,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:23:34,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359804592] [2020-07-21 11:23:34,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:23:34,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 11:23:34,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701702275] [2020-07-21 11:23:34,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 11:23:34,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:23:34,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 11:23:34,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 11:23:34,221 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2020-07-21 11:23:34,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:23:34,247 INFO L93 Difference]: Finished difference Result 67 states and 104 transitions. [2020-07-21 11:23:34,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 11:23:34,249 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-21 11:23:34,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:23:34,259 INFO L225 Difference]: With dead ends: 67 [2020-07-21 11:23:34,259 INFO L226 Difference]: Without dead ends: 31 [2020-07-21 11:23:34,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 11:23:34,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-21 11:23:34,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-07-21 11:23:34,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-21 11:23:34,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-07-21 11:23:34,303 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 10 [2020-07-21 11:23:34,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:23:34,304 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-07-21 11:23:34,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 11:23:34,304 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-07-21 11:23:34,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-21 11:23:34,305 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:23:34,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:23:34,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:34,520 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:23:34,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:23:34,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1556669446, now seen corresponding path program 1 times [2020-07-21 11:23:34,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:23:34,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720475873] [2020-07-21 11:23:34,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:23:34,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 11:23:34,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:23:34,732 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 8 [2020-07-21 11:23:34,738 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:34,747 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:34,747 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 11:23:34,748 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:8, output treesize:4 [2020-07-21 11:23:34,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:23:34,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:23:34,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720475873] [2020-07-21 11:23:34,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:23:34,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 11:23:34,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243187784] [2020-07-21 11:23:34,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 11:23:34,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:23:34,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 11:23:34,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 11:23:34,772 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 4 states. [2020-07-21 11:23:34,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:23:34,872 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-07-21 11:23:34,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 11:23:34,873 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-07-21 11:23:34,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:23:34,874 INFO L225 Difference]: With dead ends: 37 [2020-07-21 11:23:34,875 INFO L226 Difference]: Without dead ends: 35 [2020-07-21 11:23:34,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:23:34,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-21 11:23:34,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2020-07-21 11:23:34,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-21 11:23:34,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-07-21 11:23:34,886 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 11 [2020-07-21 11:23:34,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:23:34,886 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-07-21 11:23:34,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 11:23:34,887 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-07-21 11:23:34,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 11:23:34,888 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:23:34,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:23:35,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:35,104 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:23:35,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:23:35,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1973625457, now seen corresponding path program 1 times [2020-07-21 11:23:35,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:23:35,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966549756] [2020-07-21 11:23:35,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:23:35,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 11:23:35,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:23:35,227 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-21 11:23:35,229 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:35,234 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:35,234 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 11:23:35,235 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-07-21 11:23:35,280 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-07-21 11:23:35,281 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:35,285 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:35,286 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 11:23:35,286 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-21 11:23:35,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:23:35,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:23:35,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1966549756] [2020-07-21 11:23:35,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:23:35,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:23:35,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406499270] [2020-07-21 11:23:35,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:23:35,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:23:35,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:23:35,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:23:35,306 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 5 states. [2020-07-21 11:23:35,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:23:35,427 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-07-21 11:23:35,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 11:23:35,427 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-21 11:23:35,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:23:35,428 INFO L225 Difference]: With dead ends: 54 [2020-07-21 11:23:35,429 INFO L226 Difference]: Without dead ends: 52 [2020-07-21 11:23:35,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:23:35,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-07-21 11:23:35,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 36. [2020-07-21 11:23:35,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-21 11:23:35,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-07-21 11:23:35,438 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 14 [2020-07-21 11:23:35,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:23:35,438 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-07-21 11:23:35,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:23:35,438 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-07-21 11:23:35,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-21 11:23:35,439 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:23:35,439 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:23:35,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:35,654 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:23:35,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:23:35,655 INFO L82 PathProgramCache]: Analyzing trace with hash -954667545, now seen corresponding path program 1 times [2020-07-21 11:23:35,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:23:35,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95553996] [2020-07-21 11:23:35,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:23:35,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 30 conjunts are in the unsatisfiable core [2020-07-21 11:23:35,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:23:35,807 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-21 11:23:35,807 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 [2020-07-21 11:23:35,808 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:35,821 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:35,827 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-21 11:23:35,828 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:35,840 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:35,841 INFO L544 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. [2020-07-21 11:23:35,842 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:26 [2020-07-21 11:23:35,950 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:35,951 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-07-21 11:23:35,952 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:36,011 INFO L624 ElimStorePlain]: treesize reduction 14, result has 80.3 percent of original size [2020-07-21 11:23:36,022 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 11:23:36,042 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:36,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 11:23:36,053 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 20 [2020-07-21 11:23:36,054 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:36,070 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:36,072 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 11:23:36,073 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:59, output treesize:24 [2020-07-21 11:23:36,176 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:36,177 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2020-07-21 11:23:36,179 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:36,210 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:36,213 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_30|, |v_#memory_int_31|], 4=[|v_#memory_int_33|]} [2020-07-21 11:23:36,218 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 11:23:36,241 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:36,245 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 11:23:36,262 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:36,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 11:23:36,288 INFO L350 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2020-07-21 11:23:36,288 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 45 [2020-07-21 11:23:36,289 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:36,306 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:36,311 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-07-21 11:23:36,311 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:77, output treesize:40 [2020-07-21 11:23:36,399 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 [2020-07-21 11:23:36,400 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:36,407 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:36,408 INFO L544 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 11:23:36,409 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:49, output treesize:3 [2020-07-21 11:23:36,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:23:36,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:23:36,463 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_31|], 3=[|v_#memory_int_30|]} [2020-07-21 11:23:36,470 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 11:23:36,489 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:36,493 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 11:23:36,505 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:36,506 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-07-21 11:23:36,507 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:63, output treesize:55 [2020-07-21 11:23:36,561 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_29|], 6=[|v_#memory_int_35|]} [2020-07-21 11:23:36,566 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 11:23:36,594 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:36,598 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 11:23:36,617 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:36,620 INFO L544 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-2 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2020-07-21 11:23:36,620 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:96, output treesize:102 [2020-07-21 11:23:38,763 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:38,764 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 28 treesize of output 32 [2020-07-21 11:23:38,765 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:38,773 INFO L624 ElimStorePlain]: treesize reduction 125, result has 0.8 percent of original size [2020-07-21 11:23:38,775 INFO L512 ElimStorePlain]: Eliminatee |v_#memory_int_28| vanished before elimination [2020-07-21 11:23:38,776 INFO L544 ElimStorePlain]: Start of recursive call 1: 12 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 11:23:38,776 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 14 variables, input treesize:138, output treesize:1 [2020-07-21 11:23:38,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:23:38,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95553996] [2020-07-21 11:23:38,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:23:38,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-07-21 11:23:38,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712240772] [2020-07-21 11:23:38,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 11:23:38,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:23:38,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 11:23:38,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=83, Unknown=1, NotChecked=0, Total=110 [2020-07-21 11:23:38,790 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 11 states. [2020-07-21 11:23:45,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:23:45,552 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2020-07-21 11:23:45,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 11:23:45,553 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2020-07-21 11:23:45,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:23:45,554 INFO L225 Difference]: With dead ends: 62 [2020-07-21 11:23:45,555 INFO L226 Difference]: Without dead ends: 60 [2020-07-21 11:23:45,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=78, Invalid=193, Unknown=1, NotChecked=0, Total=272 [2020-07-21 11:23:45,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-21 11:23:45,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 27. [2020-07-21 11:23:45,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-21 11:23:45,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-07-21 11:23:45,562 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2020-07-21 11:23:45,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:23:45,563 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-07-21 11:23:45,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 11:23:45,563 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-07-21 11:23:45,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-21 11:23:45,564 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:23:45,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:23:45,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:45,771 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:23:45,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:23:45,772 INFO L82 PathProgramCache]: Analyzing trace with hash 903516662, now seen corresponding path program 1 times [2020-07-21 11:23:45,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:23:45,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712967968] [2020-07-21 11:23:45,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:23:45,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 11:23:45,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:23:45,880 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-07-21 11:23:45,881 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:45,883 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:45,883 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 11:23:45,884 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-21 11:23:45,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:23:45,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:23:45,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712967968] [2020-07-21 11:23:45,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:23:45,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:23:45,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897287411] [2020-07-21 11:23:45,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:23:45,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:23:45,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:23:45,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:23:45,894 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 5 states. [2020-07-21 11:23:45,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:23:45,977 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-07-21 11:23:45,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:23:45,977 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-07-21 11:23:45,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:23:45,978 INFO L225 Difference]: With dead ends: 42 [2020-07-21 11:23:45,978 INFO L226 Difference]: Without dead ends: 30 [2020-07-21 11:23:45,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:23:45,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-21 11:23:45,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-07-21 11:23:45,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-21 11:23:45,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-07-21 11:23:45,985 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 18 [2020-07-21 11:23:45,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:23:45,985 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-07-21 11:23:45,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:23:45,985 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-07-21 11:23:45,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-21 11:23:45,986 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:23:45,986 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] [2020-07-21 11:23:46,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:46,200 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:23:46,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:23:46,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1223911862, now seen corresponding path program 1 times [2020-07-21 11:23:46,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:23:46,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092020111] [2020-07-21 11:23:46,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:23:46,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 11:23:46,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:23:46,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 11:23:46,370 INFO L350 Elim1Store]: treesize reduction 33, result has 55.4 percent of original size [2020-07-21 11:23:46,371 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 [2020-07-21 11:23:46,372 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:46,425 INFO L624 ElimStorePlain]: treesize reduction 16, result has 81.4 percent of original size [2020-07-21 11:23:46,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 11:23:46,485 INFO L350 Elim1Store]: treesize reduction 33, result has 55.4 percent of original size [2020-07-21 11:23:46,488 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 [2020-07-21 11:23:46,488 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:46,546 INFO L624 ElimStorePlain]: treesize reduction 16, result has 79.7 percent of original size [2020-07-21 11:23:46,547 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 11:23:46,548 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:77, output treesize:63 [2020-07-21 11:23:46,624 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 11:23:46,628 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 11:23:46,649 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-07-21 11:23:46,650 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:46,655 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-21 11:23:46,656 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:46,668 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:46,669 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 [2020-07-21 11:23:46,670 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:46,721 INFO L624 ElimStorePlain]: treesize reduction 12, result has 84.6 percent of original size [2020-07-21 11:23:46,732 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-21 11:23:46,733 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:46,738 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-07-21 11:23:46,738 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:46,771 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:46,772 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 [2020-07-21 11:23:46,773 INFO L544 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:46,790 INFO L624 ElimStorePlain]: treesize reduction 20, result has 25.9 percent of original size [2020-07-21 11:23:46,790 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 11:23:46,790 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 4 variables, input treesize:110, output treesize:7 [2020-07-21 11:23:46,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:23:46,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:23:46,849 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:23:46,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:23:46,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092020111] [2020-07-21 11:23:46,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:23:46,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 11:23:46,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195657137] [2020-07-21 11:23:46,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 11:23:46,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:23:46,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 11:23:46,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:23:46,873 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 7 states. [2020-07-21 11:23:47,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:23:47,138 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-07-21 11:23:47,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 11:23:47,140 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-07-21 11:23:47,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:23:47,140 INFO L225 Difference]: With dead ends: 53 [2020-07-21 11:23:47,140 INFO L226 Difference]: Without dead ends: 31 [2020-07-21 11:23:47,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-07-21 11:23:47,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-21 11:23:47,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-07-21 11:23:47,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-21 11:23:47,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-07-21 11:23:47,147 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 21 [2020-07-21 11:23:47,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:23:47,147 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-07-21 11:23:47,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 11:23:47,147 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-07-21 11:23:47,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 11:23:47,148 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:23:47,148 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] [2020-07-21 11:23:47,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:47,350 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:23:47,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:23:47,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1223476830, now seen corresponding path program 1 times [2020-07-21 11:23:47,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:23:47,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024442606] [2020-07-21 11:23:47,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:23:47,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 53 conjunts are in the unsatisfiable core [2020-07-21 11:23:47,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:23:47,480 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-21 11:23:47,480 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 [2020-07-21 11:23:47,481 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:47,493 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:47,494 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 11:23:47,494 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:23 [2020-07-21 11:23:47,593 INFO L350 Elim1Store]: treesize reduction 8, result has 87.3 percent of original size [2020-07-21 11:23:47,593 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 69 [2020-07-21 11:23:47,594 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:47,668 INFO L624 ElimStorePlain]: treesize reduction 28, result has 75.7 percent of original size [2020-07-21 11:23:47,676 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-07-21 11:23:47,676 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:47,729 INFO L624 ElimStorePlain]: treesize reduction 4, result has 94.6 percent of original size [2020-07-21 11:23:47,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 11:23:47,743 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-07-21 11:23:47,744 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:47,767 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:47,768 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 11:23:47,768 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:85, output treesize:57 [2020-07-21 11:23:47,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 11:23:47,945 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:47,945 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 25 treesize of output 49 [2020-07-21 11:23:47,946 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:48,088 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-07-21 11:23:48,089 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:48,099 INFO L440 ElimStorePlain]: Different costs {0=[|v_#memory_int_38|, |v_#memory_int_40|], 2=[|v_#memory_int_39|], 4=[|v_#memory_$Pointer$.offset_29|, |v_#memory_$Pointer$.base_29|, |v_#memory_$Pointer$.base_31|, |v_#memory_$Pointer$.offset_31|]} [2020-07-21 11:23:48,107 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:48,194 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:48,204 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 30 treesize of output 11 [2020-07-21 11:23:48,204 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:48,286 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:48,296 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2020-07-21 11:23:48,297 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:48,383 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:48,388 INFO L544 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 11:23:48,457 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:48,461 INFO L544 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 11:23:48,532 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:48,658 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2020-07-21 11:23:48,662 INFO L350 Elim1Store]: treesize reduction 124, result has 41.2 percent of original size [2020-07-21 11:23:48,662 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 6 case distinctions, treesize of input 159 treesize of output 152 [2020-07-21 11:23:48,670 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[9, 3, 2, 1] term [2020-07-21 11:23:48,671 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-07-21 11:23:48,673 INFO L544 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:48,755 INFO L624 ElimStorePlain]: treesize reduction 82, result has 62.2 percent of original size [2020-07-21 11:23:48,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 11:23:48,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 11:23:48,772 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 43 [2020-07-21 11:23:48,773 INFO L544 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:48,798 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:48,800 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 7 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 11:23:48,800 INFO L244 ElimStorePlain]: Needed 9 recursive calls to eliminate 11 variables, input treesize:272, output treesize:89 [2020-07-21 11:23:48,878 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 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 [2020-07-21 11:23:48,879 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:48,898 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:48,900 INFO L544 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. [2020-07-21 11:23:48,900 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:100, output treesize:74 [2020-07-21 11:23:49,672 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:49,673 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 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 [2020-07-21 11:23:49,675 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-07-21 11:23:49,676 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 11:23:49,677 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-07-21 11:23:49,678 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:49,692 INFO L624 ElimStorePlain]: treesize reduction 36, result has 20.0 percent of original size [2020-07-21 11:23:49,693 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 11:23:49,693 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:75, output treesize:4 [2020-07-21 11:23:49,714 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:23:49,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:23:49,790 INFO L440 ElimStorePlain]: Different costs {0=[|v_#memory_int_38|, |#memory_int|], 2=[|v_#memory_int_39|, |v_#memory_$Pointer$.offset_32|], 6=[|v_#memory_$Pointer$.offset_29|, |v_#memory_$Pointer$.base_29|, |v_#memory_$Pointer$.base_32|]} [2020-07-21 11:23:49,803 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:49,861 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:49,872 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 11:23:49,875 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:49,875 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 21 treesize of output 10 [2020-07-21 11:23:49,875 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:49,932 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:49,942 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 10 treesize of output 4 [2020-07-21 11:23:49,942 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:49,980 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:49,984 INFO L544 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 11:23:50,028 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:50,032 INFO L544 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 11:23:50,057 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:50,060 INFO L544 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 11:23:50,082 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:50,088 INFO L544 ElimStorePlain]: Start of recursive call 8: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 11:23:50,105 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:50,107 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 7 dim-2 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2020-07-21 11:23:50,107 INFO L244 ElimStorePlain]: Needed 8 recursive calls to eliminate 10 variables, input treesize:178, output treesize:140 [2020-07-21 11:23:50,184 INFO L440 ElimStorePlain]: Different costs {6=[|#memory_$Pointer$.offset|], 14=[|#memory_$Pointer$.base|]} [2020-07-21 11:23:50,240 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 185239022 treesize of output 185173486 [2020-07-21 11:24:06,317 INFO L544 ElimStorePlain]: Start of recursive call 2: 16384 dim-0 vars, End of recursive call: 16384 dim-0 vars, and 2 xjuncts. [2020-07-21 11:26:55,762 WARN L193 SmtUtils]: Spent 2.82 m on a formula simplification. DAG size of input: 250822 DAG size of output: 98 [2020-07-21 11:26:55,764 INFO L624 ElimStorePlain]: treesize reduction 185172446, result has 0.0 percent of original size [2020-07-21 11:26:55,876 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 11:26:56,052 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-07-21 11:26:56,053 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:26:56,057 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 20 case distinctions, treesize of input 23026969 treesize of output 22928464 [2020-07-21 11:26:56,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024442606] [2020-07-21 11:26:56,129 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2020-07-21 11:26:56,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:26:56,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-07-21 11:26:56,130 ERROR L206 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-07-21 11:26:56,130 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 11:26:56,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:26:56,367 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-07-21 11:26:56,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:26:56 BoogieIcfgContainer [2020-07-21 11:26:56,368 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 11:26:56,369 INFO L168 Benchmark]: Toolchain (without parser) took 203870.15 ms. Allocated memory was 138.4 MB in the beginning and 2.0 GB in the end (delta: 1.9 GB). Free memory was 102.2 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2020-07-21 11:26:56,370 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-21 11:26:56,370 INFO L168 Benchmark]: CACSL2BoogieTranslator took 644.89 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 101.8 MB in the beginning and 168.5 MB in the end (delta: -66.8 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2020-07-21 11:26:56,371 INFO L168 Benchmark]: Boogie Preprocessor took 86.08 ms. Allocated memory is still 200.8 MB. Free memory was 168.5 MB in the beginning and 165.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-07-21 11:26:56,371 INFO L168 Benchmark]: RCFGBuilder took 670.01 ms. Allocated memory is still 200.8 MB. Free memory was 165.5 MB in the beginning and 118.1 MB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 7.1 GB. [2020-07-21 11:26:56,372 INFO L168 Benchmark]: TraceAbstraction took 202462.70 ms. Allocated memory was 200.8 MB in the beginning and 2.0 GB in the end (delta: 1.8 GB). Free memory was 118.1 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2020-07-21 11:26:56,374 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 644.89 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 101.8 MB in the beginning and 168.5 MB in the end (delta: -66.8 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 86.08 ms. Allocated memory is still 200.8 MB. Free memory was 168.5 MB in the beginning and 165.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 670.01 ms. Allocated memory is still 200.8 MB. Free memory was 165.5 MB in the beginning and 118.1 MB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 202462.70 ms. Allocated memory was 200.8 MB in the beginning and 2.0 GB in the end (delta: 1.8 GB). Free memory was 118.1 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1038]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible 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; [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 [L1005] COND FALSE !(__VERIFIER_nondet_int()) [L1026] end = null [L1027] end = list [L1030] COND FALSE !(!(null != end)) [L1031] EXPR end->colour [L1031] COND FALSE !(!(BLACK == end->colour)) [L1033] COND TRUE null != end [L1035] EXPR end->colour [L1035] COND FALSE !(RED == end->colour) [L1042] EXPR end->next [L1042] end = end->next [L1033] COND TRUE null != end [L1035] EXPR end->colour [L1035] COND TRUE RED == end->colour [L1037] EXPR end->next [L1037] end = end->next [L1038] COND TRUE !(null != end) [L1038] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 38 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 202.3s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 7.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 167 SDtfs, 153 SDslu, 353 SDs, 0 SdLazy, 275 SolverSat, 63 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 6.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 56 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 121 ConstructedInterpolants, 9 QuantifiedInterpolants, 30043 SizeOfPredicates, 33 NumberOfNonLiveVariables, 549 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 2/8 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...