/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -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 01:15:03,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 01:15:03,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 01:15:03,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 01:15:03,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 01:15:03,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 01:15:03,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 01:15:03,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 01:15:03,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 01:15:03,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 01:15:03,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 01:15:03,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 01:15:03,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 01:15:03,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 01:15:03,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 01:15:03,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 01:15:03,309 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 01:15:03,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 01:15:03,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 01:15:03,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 01:15:03,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 01:15:03,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 01:15:03,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 01:15:03,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 01:15:03,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 01:15:03,321 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 01:15:03,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 01:15:03,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 01:15:03,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 01:15:03,324 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 01:15:03,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 01:15:03,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 01:15:03,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 01:15:03,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 01:15:03,327 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 01:15:03,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 01:15:03,328 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 01:15:03,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 01:15:03,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 01:15:03,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 01:15:03,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 01:15:03,331 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 01:15:03,347 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 01:15:03,347 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 01:15:03,348 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 01:15:03,348 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 01:15:03,349 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 01:15:03,349 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 01:15:03,349 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 01:15:03,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 01:15:03,349 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 01:15:03,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 01:15:03,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 01:15:03,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 01:15:03,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 01:15:03,350 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 01:15:03,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 01:15:03,351 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 01:15:03,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 01:15:03,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 01:15:03,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 01:15:03,352 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 01:15:03,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 01:15:03,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:15:03,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 01:15:03,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 01:15:03,353 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 01:15:03,353 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 01:15:03,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:15:03,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 01:15:03,353 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 01:15:03,354 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 01:15:03,640 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 01:15:03,653 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 01:15:03,657 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 01:15:03,658 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 01:15:03,659 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 01:15:03,660 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-07-21 01:15:03,740 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0b22eef7/7baf372533d3431dad689092ab620c0f/FLAG3f41223e9 [2020-07-21 01:15:04,311 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 01:15:04,312 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-07-21 01:15:04,333 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0b22eef7/7baf372533d3431dad689092ab620c0f/FLAG3f41223e9 [2020-07-21 01:15:04,581 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0b22eef7/7baf372533d3431dad689092ab620c0f [2020-07-21 01:15:04,590 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 01:15:04,593 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 01:15:04,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 01:15:04,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 01:15:04,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 01:15:04,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:15:04" (1/1) ... [2020-07-21 01:15:04,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ed73992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:15:04, skipping insertion in model container [2020-07-21 01:15:04,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:15:04" (1/1) ... [2020-07-21 01:15:04,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 01:15:04,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 01:15:05,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:15:05,133 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 01:15:05,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:15:05,231 INFO L208 MainTranslator]: Completed translation [2020-07-21 01:15:05,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:15:05 WrapperNode [2020-07-21 01:15:05,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 01:15:05,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 01:15:05,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 01:15:05,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 01:15:05,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:15:05" (1/1) ... [2020-07-21 01:15:05,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:15:05" (1/1) ... [2020-07-21 01:15:05,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:15:05" (1/1) ... [2020-07-21 01:15:05,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:15:05" (1/1) ... [2020-07-21 01:15:05,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:15:05" (1/1) ... [2020-07-21 01:15:05,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:15:05" (1/1) ... [2020-07-21 01:15:05,290 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:15:05" (1/1) ... [2020-07-21 01:15:05,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 01:15:05,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 01:15:05,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 01:15:05,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 01:15:05,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:15:05" (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 01:15:05,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 01:15:05,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 01:15:05,355 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 01:15:05,355 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-21 01:15:05,355 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-21 01:15:05,355 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-21 01:15:05,355 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-21 01:15:05,356 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-21 01:15:05,356 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-21 01:15:05,356 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-21 01:15:05,356 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-21 01:15:05,356 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-21 01:15:05,356 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-21 01:15:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-21 01:15:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-21 01:15:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-21 01:15:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-21 01:15:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-21 01:15:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-21 01:15:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-21 01:15:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-21 01:15:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-21 01:15:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-21 01:15:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-21 01:15:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-21 01:15:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-21 01:15:05,359 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-21 01:15:05,359 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-21 01:15:05,359 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-21 01:15:05,359 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-21 01:15:05,359 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-21 01:15:05,359 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-21 01:15:05,359 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-21 01:15:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-21 01:15:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-21 01:15:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-21 01:15:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-21 01:15:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-21 01:15:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-21 01:15:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-21 01:15:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-21 01:15:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-21 01:15:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-21 01:15:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-21 01:15:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-21 01:15:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-21 01:15:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-21 01:15:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-21 01:15:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-21 01:15:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-21 01:15:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-21 01:15:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-21 01:15:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-21 01:15:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 01:15:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-21 01:15:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-21 01:15:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 01:15:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-21 01:15:05,364 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-21 01:15:05,364 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-21 01:15:05,364 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-21 01:15:05,364 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-21 01:15:05,364 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 01:15:05,364 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-21 01:15:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-21 01:15:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-21 01:15:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 01:15:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-21 01:15:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-21 01:15:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-21 01:15:05,366 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-21 01:15:05,366 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-21 01:15:05,366 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-21 01:15:05,366 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-21 01:15:05,366 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-21 01:15:05,366 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-21 01:15:05,366 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-21 01:15:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-21 01:15:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-21 01:15:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-21 01:15:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-21 01:15:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-21 01:15:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-21 01:15:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-21 01:15:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-21 01:15:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-21 01:15:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-21 01:15:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-21 01:15:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-21 01:15:05,369 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-21 01:15:05,369 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-21 01:15:05,369 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-21 01:15:05,369 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-21 01:15:05,369 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-21 01:15:05,369 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-21 01:15:05,370 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-21 01:15:05,370 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-21 01:15:05,370 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-21 01:15:05,370 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-21 01:15:05,370 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-21 01:15:05,370 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-21 01:15:05,370 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-21 01:15:05,371 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-21 01:15:05,371 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-21 01:15:05,371 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-21 01:15:05,371 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-21 01:15:05,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 01:15:05,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 01:15:05,371 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 01:15:05,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 01:15:05,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 01:15:05,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 01:15:05,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 01:15:05,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 01:15:05,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 01:15:05,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 01:15:05,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 01:15:05,912 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 01:15:05,912 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-07-21 01:15:05,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:15:05 BoogieIcfgContainer [2020-07-21 01:15:05,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 01:15:05,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 01:15:05,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 01:15:05,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 01:15:05,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:15:04" (1/3) ... [2020-07-21 01:15:05,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd974f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:15:05, skipping insertion in model container [2020-07-21 01:15:05,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:15:05" (2/3) ... [2020-07-21 01:15:05,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd974f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:15:05, skipping insertion in model container [2020-07-21 01:15:05,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:15:05" (3/3) ... [2020-07-21 01:15:05,925 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2020-07-21 01:15:05,934 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 01:15:05,941 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-07-21 01:15:05,955 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-07-21 01:15:05,979 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 01:15:05,979 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 01:15:05,980 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 01:15:05,980 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 01:15:05,980 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 01:15:05,980 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 01:15:05,980 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 01:15:05,981 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 01:15:05,998 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-07-21 01:15:06,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 01:15:06,003 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:15:06,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:15:06,005 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:15:06,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:15:06,010 INFO L82 PathProgramCache]: Analyzing trace with hash -742552803, now seen corresponding path program 1 times [2020-07-21 01:15:06,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:15:06,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250757358] [2020-07-21 01:15:06,017 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:15:06,208 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:15:06,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:15:06,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 01:15:06,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:15:06,238 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 01:15:06,239 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:15:06,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250757358] [2020-07-21 01:15:06,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:15:06,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 01:15:06,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325818038] [2020-07-21 01:15:06,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 01:15:06,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:15:06,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 01:15:06,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 01:15:06,269 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2020-07-21 01:15:06,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:15:06,310 INFO L93 Difference]: Finished difference Result 67 states and 104 transitions. [2020-07-21 01:15:06,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 01:15:06,312 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-21 01:15:06,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:15:06,329 INFO L225 Difference]: With dead ends: 67 [2020-07-21 01:15:06,329 INFO L226 Difference]: Without dead ends: 31 [2020-07-21 01:15:06,336 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 01:15:06,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-21 01:15:06,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-07-21 01:15:06,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-21 01:15:06,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-07-21 01:15:06,385 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 10 [2020-07-21 01:15:06,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:15:06,385 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-07-21 01:15:06,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 01:15:06,386 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-07-21 01:15:06,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-21 01:15:06,387 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:15:06,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:15:06,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:15:06,602 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:15:06,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:15:06,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1556669446, now seen corresponding path program 1 times [2020-07-21 01:15:06,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:15:06,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285639296] [2020-07-21 01:15:06,604 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:15:06,726 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:15:06,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:15:06,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 01:15:06,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:15:06,787 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 01:15:06,790 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:06,798 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:06,799 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:15:06,799 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:8, output treesize:4 [2020-07-21 01:15:06,810 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 01:15:06,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:15:06,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285639296] [2020-07-21 01:15:06,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:15:06,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 01:15:06,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979331786] [2020-07-21 01:15:06,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 01:15:06,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:15:06,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 01:15:06,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 01:15:06,814 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 4 states. [2020-07-21 01:15:06,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:15:06,901 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-07-21 01:15:06,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 01:15:06,901 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-07-21 01:15:06,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:15:06,903 INFO L225 Difference]: With dead ends: 37 [2020-07-21 01:15:06,903 INFO L226 Difference]: Without dead ends: 35 [2020-07-21 01:15:06,904 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 01:15:06,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-21 01:15:06,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2020-07-21 01:15:06,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-21 01:15:06,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-07-21 01:15:06,910 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 11 [2020-07-21 01:15:06,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:15:06,911 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-07-21 01:15:06,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 01:15:06,911 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-07-21 01:15:06,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 01:15:06,912 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:15:06,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:15:07,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:15:07,113 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:15:07,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:15:07,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1973625457, now seen corresponding path program 1 times [2020-07-21 01:15:07,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:15:07,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812154596] [2020-07-21 01:15:07,114 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:15:07,239 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:15:07,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:15:07,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-21 01:15:07,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:15:07,263 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 01:15:07,264 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:07,269 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:07,270 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:15:07,270 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2020-07-21 01:15:07,300 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 01:15:07,301 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:07,304 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:07,304 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:15:07,304 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-07-21 01:15:07,312 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 01:15:07,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:15:07,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812154596] [2020-07-21 01:15:07,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:15:07,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 01:15:07,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734811604] [2020-07-21 01:15:07,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 01:15:07,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:15:07,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 01:15:07,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:15:07,315 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 5 states. [2020-07-21 01:15:07,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:15:07,459 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2020-07-21 01:15:07,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 01:15:07,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-21 01:15:07,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:15:07,462 INFO L225 Difference]: With dead ends: 61 [2020-07-21 01:15:07,462 INFO L226 Difference]: Without dead ends: 59 [2020-07-21 01:15:07,463 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 01:15:07,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-07-21 01:15:07,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 39. [2020-07-21 01:15:07,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-21 01:15:07,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-07-21 01:15:07,473 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 14 [2020-07-21 01:15:07,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:15:07,473 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-07-21 01:15:07,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 01:15:07,473 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-07-21 01:15:07,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-21 01:15:07,475 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:15:07,475 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:15:07,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:15:07,689 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:15:07,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:15:07,689 INFO L82 PathProgramCache]: Analyzing trace with hash -954667545, now seen corresponding path program 1 times [2020-07-21 01:15:07,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:15:07,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25174354] [2020-07-21 01:15:07,690 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:15:08,144 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:15:08,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:15:08,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 39 conjunts are in the unsatisfiable core [2020-07-21 01:15:08,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:15:08,176 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-21 01:15:08,177 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 01:15:08,178 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:08,191 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:08,197 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 01:15:08,197 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:08,209 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:08,211 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 01:15:08,211 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:29 [2020-07-21 01:15:08,261 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:08,262 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-07-21 01:15:08,263 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:08,281 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:08,289 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 01:15:08,305 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:08,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:15:08,312 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 01:15:08,313 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:08,324 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:08,325 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 01:15:08,326 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:56, output treesize:17 [2020-07-21 01:15:08,348 INFO L440 ElimStorePlain]: Different costs {0=[|v_#memory_int_30|], 2=[|v_#memory_int_31|], 4=[|v_#memory_int_33|]} [2020-07-21 01:15:08,352 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 01:15:08,370 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:08,373 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 01:15:08,388 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:08,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:15:08,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:15:08,397 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 01:15:08,553 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-07-21 01:15:08,554 INFO L350 Elim1Store]: treesize reduction 55, result has 73.2 percent of original size [2020-07-21 01:15:08,554 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 167 [2020-07-21 01:15:08,556 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:08,658 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2020-07-21 01:15:08,659 INFO L624 ElimStorePlain]: treesize reduction 90, result has 47.4 percent of original size [2020-07-21 01:15:08,664 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:15:08,668 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:15:08,671 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:15:08,674 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:15:08,676 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:15:08,678 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:08,678 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:63, output treesize:52 [2020-07-21 01:15:08,680 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:15:10,998 WARN L193 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-07-21 01:15:11,001 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:15:11,026 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:15:11,069 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:15:11,154 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 1] term [2020-07-21 01:15:11,155 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:15:11,166 INFO L440 ElimStorePlain]: Different costs {1=[v_prenex_2], 2=[|#memory_int|]} [2020-07-21 01:15:11,185 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-07-21 01:15:11,186 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:11,199 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:11,203 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2020-07-21 01:15:11,204 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:11,213 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:11,214 INFO L544 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:15:11,214 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:55, output treesize:3 [2020-07-21 01:15:11,226 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 01:15:11,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:15:11,261 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_31|], 3=[|v_#memory_int_30|]} [2020-07-21 01:15:11,264 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 01:15:11,274 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:11,276 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 01:15:11,283 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:11,283 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:11,284 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:55, output treesize:46 [2020-07-21 01:15:12,920 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_main_~end~0.base_26 Int) (v_DerPreprocessor_5 Int) (v_DerPreprocessor_4 Int)) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (store |c_#memory_int| c_main_~end~0.base (store (store (select |c_#memory_int| c_main_~end~0.base) (+ c_main_~end~0.offset 4) ~unnamed1~0~RED) c_main_~end~0.offset v_DerPreprocessor_4)))) (store .cse0 v_main_~end~0.base_26 (store (store (select .cse0 v_main_~end~0.base_26) 0 v_DerPreprocessor_5) 4 ~unnamed1~0~BLACK))) c_main_~list~0.base) (+ c_main_~list~0.offset 4)))) is different from false [2020-07-21 01:15:12,932 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_29|], 6=[|v_#memory_int_35|]} [2020-07-21 01:15:12,938 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 01:15:12,953 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:12,958 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 01:15:12,970 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:12,971 INFO L544 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-2 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:12,972 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:85, output treesize:91 [2020-07-21 01:15:13,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:15:13,030 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:13,036 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:13,039 INFO L512 ElimStorePlain]: Eliminatee |v_#memory_int_28| vanished before elimination [2020-07-21 01:15:13,039 INFO L544 ElimStorePlain]: Start of recursive call 1: 10 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:15:13,039 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 12 variables, input treesize:110, output treesize:1 [2020-07-21 01:15:13,050 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 01:15:13,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25174354] [2020-07-21 01:15:13,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:15:13,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-07-21 01:15:13,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914660240] [2020-07-21 01:15:13,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 01:15:13,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:15:13,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 01:15:13,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=67, Unknown=3, NotChecked=16, Total=110 [2020-07-21 01:15:13,055 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 11 states. [2020-07-21 01:15:13,193 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2020-07-21 01:15:17,088 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_main_~end~0.base_26 Int) (v_DerPreprocessor_5 Int) (v_DerPreprocessor_4 Int)) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (store |c_#memory_int| c_main_~end~0.base (store (store (select |c_#memory_int| c_main_~end~0.base) (+ c_main_~end~0.offset 4) ~unnamed1~0~RED) c_main_~end~0.offset v_DerPreprocessor_4)))) (store .cse0 v_main_~end~0.base_26 (store (store (select .cse0 v_main_~end~0.base_26) 0 v_DerPreprocessor_5) 4 ~unnamed1~0~BLACK))) c_main_~list~0.base) (+ c_main_~list~0.offset 4)))) (not (= c_main_~list~0.base c_main_~end~0.base)) (= 0 c_main_~list~0.offset) (forall ((v_main_~end~0.base_26 Int) (v_main_~end~0.offset_27 Int) (|v_main_#t~malloc3.base_2| Int) (v_DerPreprocessor_7 Int) (v_DerPreprocessor_6 Int) (v_DerPreprocessor_5 Int) (v_DerPreprocessor_4 Int)) (or (= ~unnamed1~0~BLACK (select (select (let ((.cse1 (let ((.cse2 (store |c_#memory_int| c_main_~end~0.base (store (select |c_#memory_int| c_main_~end~0.base) c_main_~end~0.offset v_DerPreprocessor_6)))) (store .cse2 |v_main_#t~malloc3.base_2| (store (store (store (select .cse2 |v_main_#t~malloc3.base_2|) v_main_~end~0.offset_27 v_DerPreprocessor_7) (+ v_main_~end~0.offset_27 4) ~unnamed1~0~RED) v_main_~end~0.offset_27 v_DerPreprocessor_4))))) (store .cse1 v_main_~end~0.base_26 (store (store (select .cse1 v_main_~end~0.base_26) 0 v_DerPreprocessor_5) 4 ~unnamed1~0~BLACK))) c_main_~list~0.base) (+ c_main_~list~0.offset 4))) (not (= 0 (select |c_#valid| |v_main_#t~malloc3.base_2|))))) (= ~unnamed1~0~BLACK (select (select |c_#memory_int| c_main_~list~0.base) (+ c_main_~list~0.offset 4)))) is different from false [2020-07-21 01:15:17,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:15:17,607 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2020-07-21 01:15:17,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 01:15:17,608 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2020-07-21 01:15:17,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:15:17,609 INFO L225 Difference]: With dead ends: 73 [2020-07-21 01:15:17,609 INFO L226 Difference]: Without dead ends: 71 [2020-07-21 01:15:17,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=61, Invalid=125, Unknown=4, NotChecked=50, Total=240 [2020-07-21 01:15:17,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-07-21 01:15:17,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 39. [2020-07-21 01:15:17,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-21 01:15:17,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-07-21 01:15:17,618 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 17 [2020-07-21 01:15:17,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:15:17,619 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-07-21 01:15:17,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 01:15:17,619 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-07-21 01:15:17,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-21 01:15:17,620 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:15:17,620 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 01:15:17,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:15:17,821 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:15:17,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:15:17,822 INFO L82 PathProgramCache]: Analyzing trace with hash 903516662, now seen corresponding path program 1 times [2020-07-21 01:15:17,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:15:17,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168441293] [2020-07-21 01:15:17,823 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:15:17,910 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:15:17,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:15:17,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:15:17,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:15:17,936 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 01:15:17,936 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:17,938 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:17,939 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 01:15:17,939 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-21 01:15:17,946 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 01:15:17,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:15:17,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168441293] [2020-07-21 01:15:17,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:15:17,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 01:15:17,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485685255] [2020-07-21 01:15:17,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 01:15:17,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:15:17,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 01:15:17,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:15:17,949 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 5 states. [2020-07-21 01:15:18,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:15:18,025 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2020-07-21 01:15:18,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 01:15:18,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-07-21 01:15:18,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:15:18,027 INFO L225 Difference]: With dead ends: 54 [2020-07-21 01:15:18,027 INFO L226 Difference]: Without dead ends: 42 [2020-07-21 01:15:18,028 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 01:15:18,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-07-21 01:15:18,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-07-21 01:15:18,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-21 01:15:18,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-07-21 01:15:18,034 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 18 [2020-07-21 01:15:18,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:15:18,035 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-07-21 01:15:18,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 01:15:18,035 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-07-21 01:15:18,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-21 01:15:18,036 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:15:18,036 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:15:18,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:15:18,249 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:15:18,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:15:18,250 INFO L82 PathProgramCache]: Analyzing trace with hash -2008359281, now seen corresponding path program 2 times [2020-07-21 01:15:18,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:15:18,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858960501] [2020-07-21 01:15:18,251 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:15:18,761 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:15:18,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:15:18,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 57 conjunts are in the unsatisfiable core [2020-07-21 01:15:18,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:15:18,793 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-21 01:15:18,794 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 01:15:18,794 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:18,806 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:18,811 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 01:15:18,811 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:18,823 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:18,824 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 01:15:18,834 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:29 [2020-07-21 01:15:18,888 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:18,888 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 01:15:18,889 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:18,949 INFO L624 ElimStorePlain]: treesize reduction 14, result has 81.8 percent of original size [2020-07-21 01:15:18,953 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 01:15:18,973 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:18,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:15:18,979 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 01:15:18,980 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:18,996 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:18,997 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 01:15:18,997 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:65, output treesize:30 [2020-07-21 01:15:19,057 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:19,057 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 69 [2020-07-21 01:15:19,058 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:19,156 INFO L624 ElimStorePlain]: treesize reduction 28, result has 75.4 percent of original size [2020-07-21 01:15:19,158 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_39|, |v_#memory_int_40|], 4=[|v_#memory_int_45|]} [2020-07-21 01:15:19,161 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 01:15:19,191 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:19,194 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 01:15:19,221 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:19,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:15:19,235 INFO L350 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2020-07-21 01:15:19,236 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 43 [2020-07-21 01:15:19,236 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:19,286 INFO L624 ElimStorePlain]: treesize reduction 4, result has 94.3 percent of original size [2020-07-21 01:15:19,287 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:19,288 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:84, output treesize:52 [2020-07-21 01:15:19,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:15:19,377 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:19,377 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 27 treesize of output 99 [2020-07-21 01:15:19,379 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:19,484 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-07-21 01:15:19,484 INFO L624 ElimStorePlain]: treesize reduction 42, result has 70.2 percent of original size [2020-07-21 01:15:19,486 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_41|], 12=[|v_#memory_int_46|]} [2020-07-21 01:15:19,489 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 01:15:19,533 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:19,552 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 01:15:19,573 INFO L350 Elim1Store]: treesize reduction 22, result has 45.0 percent of original size [2020-07-21 01:15:19,574 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 50 [2020-07-21 01:15:19,575 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:19,631 INFO L624 ElimStorePlain]: treesize reduction 12, result has 86.4 percent of original size [2020-07-21 01:15:19,635 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:19,636 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:93, output treesize:69 [2020-07-21 01:15:19,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:15:19,750 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:19,750 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 48 [2020-07-21 01:15:19,753 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:19,818 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:19,821 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_42|, |v_#memory_int_43|], 18=[|v_#memory_int_47|]} [2020-07-21 01:15:19,825 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 01:15:19,879 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:19,882 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 01:15:19,925 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:19,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:15:19,943 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 01:15:19,970 INFO L350 Elim1Store]: treesize reduction 42, result has 37.3 percent of original size [2020-07-21 01:15:19,971 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 75 [2020-07-21 01:15:19,972 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:20,071 INFO L624 ElimStorePlain]: treesize reduction 18, result has 84.3 percent of original size [2020-07-21 01:15:20,081 INFO L544 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:20,081 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 11 variables, input treesize:122, output treesize:83 [2020-07-21 01:15:20,241 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:20,241 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 27 [2020-07-21 01:15:20,242 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:20,277 INFO L624 ElimStorePlain]: treesize reduction 4, result has 91.7 percent of original size [2020-07-21 01:15:20,278 INFO L544 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:15:20,278 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:85, output treesize:3 [2020-07-21 01:15:20,299 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:15:20,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:15:20,344 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_43|], 3=[|v_#memory_int_42|]} [2020-07-21 01:15:20,347 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 01:15:20,361 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:20,364 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 01:15:20,372 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:20,372 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 01:15:20,373 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:63, output treesize:55 [2020-07-21 01:15:20,420 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_41|], 6=[|v_#memory_int_49|]} [2020-07-21 01:15:20,424 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 01:15:20,450 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:20,452 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 01:15:20,471 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:20,472 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 01:15:20,473 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:96, output treesize:102 [2020-07-21 01:15:22,557 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_40|], 9=[|v_#memory_int_39|]} [2020-07-21 01:15:22,568 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 01:15:22,625 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:22,628 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 01:15:22,693 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:22,697 INFO L544 ElimStorePlain]: Start of recursive call 1: 10 dim-0 vars, 2 dim-2 vars, End of recursive call: 12 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:22,697 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 12 variables, input treesize:171, output treesize:250 [2020-07-21 01:15:24,895 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_38|], 12=[|v_#memory_int_51|]} [2020-07-21 01:15:24,900 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 01:15:25,040 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-07-21 01:15:25,041 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:25,053 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 01:15:25,133 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:25,140 INFO L544 ElimStorePlain]: Start of recursive call 1: 13 dim-0 vars, 2 dim-2 vars, End of recursive call: 15 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:25,140 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 15 variables, input treesize:281, output treesize:401 [2020-07-21 01:15:31,677 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:31,678 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 107 [2020-07-21 01:15:31,679 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:31,692 INFO L624 ElimStorePlain]: treesize reduction 449, result has 0.2 percent of original size [2020-07-21 01:15:31,694 INFO L512 ElimStorePlain]: Eliminatee |v_#memory_int_37| vanished before elimination [2020-07-21 01:15:31,694 INFO L544 ElimStorePlain]: Start of recursive call 1: 18 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:15:31,695 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 20 variables, input treesize:474, output treesize:1 [2020-07-21 01:15:31,705 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 3 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:15:31,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858960501] [2020-07-21 01:15:31,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:15:31,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2020-07-21 01:15:31,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539265663] [2020-07-21 01:15:31,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-21 01:15:31,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:15:31,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-21 01:15:31,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=157, Unknown=5, NotChecked=0, Total=210 [2020-07-21 01:15:31,707 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 15 states. [2020-07-21 01:15:45,969 WARN L193 SmtUtils]: Spent 790.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-07-21 01:15:51,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:15:51,227 INFO L93 Difference]: Finished difference Result 76 states and 89 transitions. [2020-07-21 01:15:51,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-21 01:15:51,228 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 20 [2020-07-21 01:15:51,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:15:51,231 INFO L225 Difference]: With dead ends: 76 [2020-07-21 01:15:51,231 INFO L226 Difference]: Without dead ends: 74 [2020-07-21 01:15:51,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=147, Invalid=400, Unknown=5, NotChecked=0, Total=552 [2020-07-21 01:15:51,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-21 01:15:51,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 29. [2020-07-21 01:15:51,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-21 01:15:51,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-07-21 01:15:51,239 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 20 [2020-07-21 01:15:51,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:15:51,239 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-07-21 01:15:51,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-21 01:15:51,239 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-07-21 01:15:51,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-21 01:15:51,240 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:15:51,240 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 01:15:51,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:15:51,447 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:15:51,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:15:51,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1223911862, now seen corresponding path program 1 times [2020-07-21 01:15:51,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:15:51,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184006272] [2020-07-21 01:15:51,449 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:15:51,561 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:15:51,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:15:51,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 19 conjunts are in the unsatisfiable core [2020-07-21 01:15:51,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:15:51,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:15:51,595 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:51,596 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 31 [2020-07-21 01:15:51,597 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:51,638 INFO L624 ElimStorePlain]: treesize reduction 16, result has 78.7 percent of original size [2020-07-21 01:15:51,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:15:51,654 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:51,655 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 31 [2020-07-21 01:15:51,655 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:51,682 INFO L624 ElimStorePlain]: treesize reduction 12, result has 76.5 percent of original size [2020-07-21 01:15:51,683 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:15:51,683 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:83, output treesize:39 [2020-07-21 01:15:51,721 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:15:51,723 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:15:51,724 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:15:51,741 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 01:15:51,741 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:51,750 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:51,750 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 18 [2020-07-21 01:15:51,751 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:51,770 INFO L624 ElimStorePlain]: treesize reduction 44, result has 32.3 percent of original size [2020-07-21 01:15:51,773 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-21 01:15:51,774 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:51,782 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:51,783 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:15:51,783 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:86, output treesize:10 [2020-07-21 01:15:51,798 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 01:15:51,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:15:51,844 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:15:51,861 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 01:15:51,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184006272] [2020-07-21 01:15:51,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:15:51,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-21 01:15:51,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531816127] [2020-07-21 01:15:51,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 01:15:51,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:15:51,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 01:15:51,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-07-21 01:15:51,863 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 8 states. [2020-07-21 01:15:52,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:15:52,051 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-07-21 01:15:52,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 01:15:52,052 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-07-21 01:15:52,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:15:52,053 INFO L225 Difference]: With dead ends: 53 [2020-07-21 01:15:52,053 INFO L226 Difference]: Without dead ends: 31 [2020-07-21 01:15:52,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-07-21 01:15:52,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-21 01:15:52,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-07-21 01:15:52,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-21 01:15:52,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-07-21 01:15:52,061 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 21 [2020-07-21 01:15:52,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:15:52,061 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-07-21 01:15:52,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 01:15:52,062 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-07-21 01:15:52,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 01:15:52,062 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:15:52,063 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 01:15:52,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:15:52,268 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:15:52,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:15:52,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1223476830, now seen corresponding path program 1 times [2020-07-21 01:15:52,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:15:52,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549955051] [2020-07-21 01:15:52,270 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:15:52,581 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:15:52,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:15:52,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 59 conjunts are in the unsatisfiable core [2020-07-21 01:15:52,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:15:52,600 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-21 01:15:52,600 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2020-07-21 01:15:52,601 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:52,613 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:52,614 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:15:52,614 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:27 [2020-07-21 01:15:52,677 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:52,678 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 69 [2020-07-21 01:15:52,679 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:52,770 INFO L624 ElimStorePlain]: treesize reduction 28, result has 76.5 percent of original size [2020-07-21 01:15:52,776 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-07-21 01:15:52,777 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:52,833 INFO L624 ElimStorePlain]: treesize reduction 4, result has 94.9 percent of original size [2020-07-21 01:15:52,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:15:52,839 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-07-21 01:15:52,840 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:52,867 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:52,867 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 01:15:52,868 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:89, output treesize:61 [2020-07-21 01:15:52,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:15:52,955 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:52,956 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 41 [2020-07-21 01:15:52,957 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:53,046 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:53,047 INFO L440 ElimStorePlain]: Different costs {0=[|v_#memory_int_54|], 1=[|v_#memory_$Pointer$.base_34|, |v_#memory_$Pointer$.offset_34|], 4=[|v_#memory_$Pointer$.base_36|, |v_#memory_$Pointer$.offset_36|]} [2020-07-21 01:15:53,056 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 11 treesize of output 7 [2020-07-21 01:15:53,057 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:53,131 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:53,134 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 01:15:53,188 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:53,194 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 01:15:53,234 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:53,303 INFO L350 Elim1Store]: treesize reduction 16, result has 80.5 percent of original size [2020-07-21 01:15:53,303 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 151 treesize of output 134 [2020-07-21 01:15:53,306 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[10, 2, 1] term [2020-07-21 01:15:53,306 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-07-21 01:15:53,307 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:53,423 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2020-07-21 01:15:53,424 INFO L624 ElimStorePlain]: treesize reduction 80, result has 61.9 percent of original size [2020-07-21 01:15:53,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:15:53,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:15:53,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:15:53,438 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 75 treesize of output 43 [2020-07-21 01:15:53,439 INFO L544 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:53,464 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:53,465 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 5 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:15:53,465 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 7 variables, input treesize:234, output treesize:91 [2020-07-21 01:15:53,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:15:53,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:15:53,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:15:53,533 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2020-07-21 01:15:53,534 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:53,546 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:53,547 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:53,547 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:102, output treesize:65 [2020-07-21 01:15:53,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:15:53,579 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2020-07-21 01:15:53,579 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:53,598 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:53,599 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:53,599 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:74, output treesize:50 [2020-07-21 01:15:54,282 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:54,283 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 45 [2020-07-21 01:15:54,284 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:15:54,284 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:15:54,285 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:15:54,285 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:54,291 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:54,291 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:15:54,291 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:51, output treesize:4 [2020-07-21 01:15:54,310 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 01:15:54,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:15:54,453 INFO L440 ElimStorePlain]: Different costs {1=[|v_#memory_int_54|], 2=[|v_#memory_$Pointer$.offset_37|], 6=[|v_#memory_$Pointer$.base_34|, |v_#memory_$Pointer$.base_37|, |v_#memory_$Pointer$.offset_34|]} [2020-07-21 01:15:54,491 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 58 treesize of output 44 [2020-07-21 01:15:54,492 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2020-07-21 01:15:54,671 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-07-21 01:15:54,672 INFO L624 ElimStorePlain]: treesize reduction 3, result has 98.0 percent of original size [2020-07-21 01:15:54,677 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:15:54,678 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:15:54,679 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 01:15:54,751 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:54,756 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 01:15:54,813 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:54,818 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:15:54,819 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:15:54,820 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 01:15:54,888 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:54,891 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:15:54,892 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:15:54,892 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 01:15:54,944 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:54,945 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:15:54,949 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 5 dim-2 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:54,950 INFO L244 ElimStorePlain]: Needed 6 recursive calls to eliminate 6 variables, input treesize:158, output treesize:225 [2020-07-21 01:15:54,951 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:15:55,065 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:15:55,070 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:15:55,073 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:15:55,076 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:15:55,080 INFO L440 ElimStorePlain]: Different costs {6=[|#memory_$Pointer$.offset|], 14=[|#memory_$Pointer$.base|]} [2020-07-21 01:15:55,301 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 721682414 treesize of output 721420270 [2020-07-21 01:16:53,515 INFO L544 ElimStorePlain]: Start of recursive call 2: 65536 dim-0 vars, End of recursive call: 65536 dim-0 vars, and 2 xjuncts. [2020-07-21 01:17:11,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549955051] [2020-07-21 01:17:11,996 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: line 199227 column 7: canceled [2020-07-21 01:17:11,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:17:11,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-07-21 01:17:11,996 ERROR L206 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-07-21 01:17:11,996 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 01:17:12,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:17:12,222 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-07-21 01:17:12,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:17:12 BoogieIcfgContainer [2020-07-21 01:17:12,222 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 01:17:12,223 INFO L168 Benchmark]: Toolchain (without parser) took 127632.24 ms. Allocated memory was 137.9 MB in the beginning and 2.6 GB in the end (delta: 2.5 GB). Free memory was 100.5 MB in the beginning and 922.4 MB in the end (delta: -821.9 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2020-07-21 01:17:12,224 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory is still 119.3 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 01:17:12,224 INFO L168 Benchmark]: CACSL2BoogieTranslator took 638.43 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 100.1 MB in the beginning and 170.8 MB in the end (delta: -70.7 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2020-07-21 01:17:12,224 INFO L168 Benchmark]: Boogie Preprocessor took 63.21 ms. Allocated memory is still 202.9 MB. Free memory was 170.8 MB in the beginning and 167.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-07-21 01:17:12,225 INFO L168 Benchmark]: RCFGBuilder took 620.32 ms. Allocated memory is still 202.9 MB. Free memory was 167.5 MB in the beginning and 120.3 MB in the end (delta: 47.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 7.1 GB. [2020-07-21 01:17:12,225 INFO L168 Benchmark]: TraceAbstraction took 126304.43 ms. Allocated memory was 202.9 MB in the beginning and 2.6 GB in the end (delta: 2.4 GB). Free memory was 120.3 MB in the beginning and 922.4 MB in the end (delta: -802.1 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2020-07-21 01:17:12,226 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory is still 119.3 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 638.43 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 100.1 MB in the beginning and 170.8 MB in the end (delta: -70.7 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 63.21 ms. Allocated memory is still 202.9 MB. Free memory was 170.8 MB in the beginning and 167.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 620.32 ms. Allocated memory is still 202.9 MB. Free memory was 167.5 MB in the beginning and 120.3 MB in the end (delta: 47.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 126304.43 ms. Allocated memory was 202.9 MB in the beginning and 2.6 GB in the end (delta: 2.4 GB). Free memory was 120.3 MB in the beginning and 922.4 MB in the end (delta: -802.1 MB). Peak memory consumption was 2.5 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: 126.2s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 24.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 193 SDtfs, 231 SDslu, 603 SDs, 0 SdLazy, 464 SolverSat, 84 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 20.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 182 GetRequests, 123 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 19.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=5, 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, 7 MinimizatonAttempts, 104 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 18.3s InterpolantComputationTime, 111 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 159 ConstructedInterpolants, 24 QuantifiedInterpolants, 66691 SizeOfPredicates, 63 NumberOfNonLiveVariables, 700 ConjunctsInSsa, 145 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 2/22 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 [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...