/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 NUM_FUNCTIONS --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 [2020-07-20 13:55:56,449 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 13:55:56,452 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 13:55:56,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 13:55:56,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 13:55:56,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 13:55:56,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 13:55:56,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 13:55:56,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 13:55:56,494 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 13:55:56,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 13:55:56,497 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 13:55:56,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 13:55:56,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 13:55:56,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 13:55:56,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 13:55:56,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 13:55:56,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 13:55:56,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 13:55:56,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 13:55:56,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 13:55:56,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 13:55:56,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 13:55:56,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 13:55:56,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 13:55:56,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 13:55:56,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 13:55:56,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 13:55:56,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 13:55:56,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 13:55:56,532 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 13:55:56,533 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 13:55:56,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 13:55:56,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 13:55:56,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 13:55:56,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 13:55:56,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 13:55:56,539 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 13:55:56,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 13:55:56,540 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 13:55:56,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 13:55:56,543 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 [2020-07-20 13:55:56,579 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 13:55:56,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 13:55:56,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 13:55:56,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 13:55:56,581 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 13:55:56,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 13:55:56,582 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 13:55:56,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 13:55:56,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 13:55:56,586 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 13:55:56,586 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 13:55:56,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 13:55:56,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 13:55:56,586 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 13:55:56,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 13:55:56,587 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 13:55:56,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 13:55:56,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 13:55:56,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 13:55:56,588 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 13:55:56,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 13:55:56,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:55:56,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 13:55:56,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 13:55:56,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 13:55:56,589 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 13:55:56,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:55:56,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 13:55:56,595 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 13:55:56,595 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 -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 13:55:56,894 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 13:55:56,907 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 13:55:56,911 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 13:55:56,912 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 13:55:56,913 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 13:55:56,914 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-07-20 13:55:56,987 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb8c79772/b75f0dfa9aa044a7b2f6d38b03c84b6c/FLAGa082887da [2020-07-20 13:55:57,566 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 13:55:57,567 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-07-20 13:55:57,581 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb8c79772/b75f0dfa9aa044a7b2f6d38b03c84b6c/FLAGa082887da [2020-07-20 13:55:57,868 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb8c79772/b75f0dfa9aa044a7b2f6d38b03c84b6c [2020-07-20 13:55:57,876 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 13:55:57,878 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 13:55:57,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 13:55:57,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 13:55:57,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 13:55:57,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:55:57" (1/1) ... [2020-07-20 13:55:57,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ac90276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:57, skipping insertion in model container [2020-07-20 13:55:57,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:55:57" (1/1) ... [2020-07-20 13:55:57,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 13:55:57,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 13:55:58,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:55:58,387 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 13:55:58,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:55:58,488 INFO L208 MainTranslator]: Completed translation [2020-07-20 13:55:58,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:58 WrapperNode [2020-07-20 13:55:58,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 13:55:58,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 13:55:58,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 13:55:58,489 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 13:55:58,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:58" (1/1) ... [2020-07-20 13:55:58,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:58" (1/1) ... [2020-07-20 13:55:58,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:58" (1/1) ... [2020-07-20 13:55:58,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:58" (1/1) ... [2020-07-20 13:55:58,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:58" (1/1) ... [2020-07-20 13:55:58,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:58" (1/1) ... [2020-07-20 13:55:58,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:58" (1/1) ... [2020-07-20 13:55:58,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 13:55:58,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 13:55:58,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 13:55:58,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 13:55:58,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:58" (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 [2020-07-20 13:55:58,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 13:55:58,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 13:55:58,625 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 13:55:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-20 13:55:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-20 13:55:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-20 13:55:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-20 13:55:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-20 13:55:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-20 13:55:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-20 13:55:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-20 13:55:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-20 13:55:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-20 13:55:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-20 13:55:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-20 13:55:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-20 13:55:58,633 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-20 13:55:58,634 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-20 13:55:58,634 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-20 13:55:58,634 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-20 13:55:58,634 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-20 13:55:58,634 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-20 13:55:58,634 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-20 13:55:58,635 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-20 13:55:58,635 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-20 13:55:58,635 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-20 13:55:58,635 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-20 13:55:58,635 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-20 13:55:58,635 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-20 13:55:58,635 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-20 13:55:58,635 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-20 13:55:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-20 13:55:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-20 13:55:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-20 13:55:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-20 13:55:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-20 13:55:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-20 13:55:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-20 13:55:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-20 13:55:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-20 13:55:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-20 13:55:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-20 13:55:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-20 13:55:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-20 13:55:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-20 13:55:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-20 13:55:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-20 13:55:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-20 13:55:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-20 13:55:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-20 13:55:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-20 13:55:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-20 13:55:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-20 13:55:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 13:55:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-20 13:55:58,640 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-20 13:55:58,640 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 13:55:58,640 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-20 13:55:58,640 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-20 13:55:58,640 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-20 13:55:58,640 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-20 13:55:58,641 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-20 13:55:58,641 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 13:55:58,641 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-20 13:55:58,641 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-20 13:55:58,641 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-20 13:55:58,641 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 13:55:58,641 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-20 13:55:58,641 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-20 13:55:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-20 13:55:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-20 13:55:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-20 13:55:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-20 13:55:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-20 13:55:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-20 13:55:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-20 13:55:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-20 13:55:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-20 13:55:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-20 13:55:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-20 13:55:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-20 13:55:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-20 13:55:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-20 13:55:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-20 13:55:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-20 13:55:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-20 13:55:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-20 13:55:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-20 13:55:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-20 13:55:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-20 13:55:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-20 13:55:58,645 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-20 13:55:58,645 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-20 13:55:58,645 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-20 13:55:58,645 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-20 13:55:58,645 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-20 13:55:58,645 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-20 13:55:58,645 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-20 13:55:58,645 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-20 13:55:58,645 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-20 13:55:58,645 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-20 13:55:58,645 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-20 13:55:58,646 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-20 13:55:58,646 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-20 13:55:58,646 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-20 13:55:58,646 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-20 13:55:58,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 13:55:58,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 13:55:58,646 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 13:55:58,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 13:55:58,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 13:55:58,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 13:55:58,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 13:55:58,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 13:55:58,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 13:55:58,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 13:55:58,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 13:55:59,179 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 13:55:59,179 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-07-20 13:55:59,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:55:59 BoogieIcfgContainer [2020-07-20 13:55:59,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 13:55:59,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 13:55:59,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 13:55:59,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 13:55:59,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:55:57" (1/3) ... [2020-07-20 13:55:59,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@689e38d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:55:59, skipping insertion in model container [2020-07-20 13:55:59,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:58" (2/3) ... [2020-07-20 13:55:59,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@689e38d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:55:59, skipping insertion in model container [2020-07-20 13:55:59,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:55:59" (3/3) ... [2020-07-20 13:55:59,196 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2020-07-20 13:55:59,208 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 13:55:59,220 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-07-20 13:55:59,235 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-07-20 13:55:59,266 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 13:55:59,266 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 13:55:59,266 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 13:55:59,266 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 13:55:59,267 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 13:55:59,267 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 13:55:59,268 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 13:55:59,268 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 13:55:59,288 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-07-20 13:55:59,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-20 13:55:59,294 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:55:59,294 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:55:59,295 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:55:59,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:55:59,300 INFO L82 PathProgramCache]: Analyzing trace with hash -742552803, now seen corresponding path program 1 times [2020-07-20 13:55:59,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:55:59,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201744788] [2020-07-20 13:55:59,310 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 [2020-07-20 13:55:59,544 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 13:55:59,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:55:59,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 13:55:59,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:55:59,635 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 [2020-07-20 13:55:59,639 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:59,647 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:59,648 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:55:59,648 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:8, output treesize:4 [2020-07-20 13:55:59,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:55:59,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:55:59,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201744788] [2020-07-20 13:55:59,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:55:59,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 13:55:59,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785353052] [2020-07-20 13:55:59,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 13:55:59,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:55:59,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 13:55:59,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 13:55:59,693 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 4 states. [2020-07-20 13:55:59,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:55:59,809 INFO L93 Difference]: Finished difference Result 73 states and 118 transitions. [2020-07-20 13:55:59,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 13:55:59,811 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-07-20 13:55:59,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:55:59,823 INFO L225 Difference]: With dead ends: 73 [2020-07-20 13:55:59,824 INFO L226 Difference]: Without dead ends: 35 [2020-07-20 13:55:59,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 13:55:59,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-20 13:55:59,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2020-07-20 13:55:59,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-20 13:55:59,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-07-20 13:55:59,875 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 10 [2020-07-20 13:55:59,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:55:59,876 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-07-20 13:55:59,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 13:55:59,876 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-07-20 13:55:59,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-20 13:55:59,877 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:55:59,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:56:00,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:56:00,092 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:56:00,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:56:00,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1973625457, now seen corresponding path program 1 times [2020-07-20 13:56:00,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:56:00,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290803845] [2020-07-20 13:56:00,095 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 [2020-07-20 13:56:00,203 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 13:56:00,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:56:00,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 13:56:00,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:56:00,218 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 [2020-07-20 13:56:00,218 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:00,222 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:00,222 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:56:00,223 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-07-20 13:56:00,246 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 [2020-07-20 13:56:00,247 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:00,249 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:00,250 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:56:00,250 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-20 13:56:00,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:56:00,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:56:00,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290803845] [2020-07-20 13:56:00,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:56:00,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 13:56:00,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876261381] [2020-07-20 13:56:00,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 13:56:00,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:56:00,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 13:56:00,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 13:56:00,262 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 5 states. [2020-07-20 13:56:00,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:56:00,353 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-07-20 13:56:00,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 13:56:00,353 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-20 13:56:00,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:56:00,355 INFO L225 Difference]: With dead ends: 54 [2020-07-20 13:56:00,355 INFO L226 Difference]: Without dead ends: 52 [2020-07-20 13:56:00,356 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 [2020-07-20 13:56:00,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-07-20 13:56:00,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 36. [2020-07-20 13:56:00,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-20 13:56:00,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-07-20 13:56:00,365 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 14 [2020-07-20 13:56:00,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:56:00,365 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-07-20 13:56:00,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 13:56:00,365 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-07-20 13:56:00,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 13:56:00,366 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:56:00,367 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:56:00,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:56:00,568 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:56:00,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:56:00,568 INFO L82 PathProgramCache]: Analyzing trace with hash -954667545, now seen corresponding path program 1 times [2020-07-20 13:56:00,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:56:00,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819796071] [2020-07-20 13:56:00,569 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 [2020-07-20 13:56:00,902 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 13:56:00,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:56:00,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 28 conjunts are in the unsatisfiable core [2020-07-20 13:56:00,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:56:00,940 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-20 13:56:00,941 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 [2020-07-20 13:56:00,942 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:00,957 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:00,966 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 [2020-07-20 13:56:00,967 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:00,980 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:00,981 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. [2020-07-20 13:56:00,982 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:26 [2020-07-20 13:56:01,046 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:01,047 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 [2020-07-20 13:56:01,049 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:01,106 INFO L624 ElimStorePlain]: treesize reduction 14, result has 80.3 percent of original size [2020-07-20 13:56:01,115 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:01,137 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:01,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:01,146 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 [2020-07-20 13:56:01,147 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:01,161 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:01,163 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. [2020-07-20 13:56:01,163 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:59, output treesize:24 [2020-07-20 13:56:01,267 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:01,267 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2020-07-20 13:56:01,269 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:01,302 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:01,306 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_30|, |v_#memory_int_31|], 4=[|v_#memory_int_33|]} [2020-07-20 13:56:01,310 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:01,333 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:01,336 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:01,352 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:01,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:01,377 INFO L350 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2020-07-20 13:56:01,378 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 45 [2020-07-20 13:56:01,379 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:01,395 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:01,400 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:01,400 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:77, output treesize:40 [2020-07-20 13:56:01,482 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13 [2020-07-20 13:56:01,483 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:01,491 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:01,492 INFO L544 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:56:01,492 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:49, output treesize:3 [2020-07-20 13:56:01,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:56:01,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 13:56:01,551 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_31|], 3=[|v_#memory_int_30|]} [2020-07-20 13:56:01,555 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:01,578 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:01,581 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:01,597 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:01,599 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. [2020-07-20 13:56:01,599 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:63, output treesize:55 [2020-07-20 13:56:01,646 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_29|], 6=[|v_#memory_int_35|]} [2020-07-20 13:56:01,650 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:01,673 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:01,676 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:01,691 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:01,694 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. [2020-07-20 13:56:01,694 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:96, output treesize:102 [2020-07-20 13:56:03,895 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:03,897 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 32 [2020-07-20 13:56:03,899 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:03,902 INFO L624 ElimStorePlain]: treesize reduction 125, result has 0.8 percent of original size [2020-07-20 13:56:03,904 INFO L512 ElimStorePlain]: Eliminatee |v_#memory_int_28| vanished before elimination [2020-07-20 13:56:03,904 INFO L544 ElimStorePlain]: Start of recursive call 1: 12 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:56:03,905 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 14 variables, input treesize:138, output treesize:1 [2020-07-20 13:56:03,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:56:03,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819796071] [2020-07-20 13:56:03,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 13:56:03,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-07-20 13:56:03,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630020908] [2020-07-20 13:56:03,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 13:56:03,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:56:03,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 13:56:03,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=83, Unknown=1, NotChecked=0, Total=110 [2020-07-20 13:56:03,915 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 11 states. [2020-07-20 13:56:12,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:56:12,545 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2020-07-20 13:56:12,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 13:56:12,546 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2020-07-20 13:56:12,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:56:12,548 INFO L225 Difference]: With dead ends: 62 [2020-07-20 13:56:12,548 INFO L226 Difference]: Without dead ends: 60 [2020-07-20 13:56:12,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=78, Invalid=193, Unknown=1, NotChecked=0, Total=272 [2020-07-20 13:56:12,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-20 13:56:12,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 27. [2020-07-20 13:56:12,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-20 13:56:12,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-07-20 13:56:12,556 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2020-07-20 13:56:12,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:56:12,557 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-07-20 13:56:12,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 13:56:12,557 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-07-20 13:56:12,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-20 13:56:12,558 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:56:12,558 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:56:12,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:56:12,760 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:56:12,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:56:12,761 INFO L82 PathProgramCache]: Analyzing trace with hash 903516662, now seen corresponding path program 1 times [2020-07-20 13:56:12,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:56:12,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481408367] [2020-07-20 13:56:12,762 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 [2020-07-20 13:56:12,874 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 13:56:12,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:56:12,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 13:56:12,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:56:12,883 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 [2020-07-20 13:56:12,884 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:12,886 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:12,886 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:56:12,887 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-07-20 13:56:12,904 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 [2020-07-20 13:56:12,904 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:12,907 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:12,908 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:56:12,908 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-20 13:56:12,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:56:12,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:56:12,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481408367] [2020-07-20 13:56:12,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:56:12,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 13:56:12,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231093321] [2020-07-20 13:56:12,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 13:56:12,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:56:12,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 13:56:12,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 13:56:12,930 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 5 states. [2020-07-20 13:56:13,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:56:13,028 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-07-20 13:56:13,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 13:56:13,028 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-07-20 13:56:13,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:56:13,030 INFO L225 Difference]: With dead ends: 62 [2020-07-20 13:56:13,030 INFO L226 Difference]: Without dead ends: 50 [2020-07-20 13:56:13,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 13:56:13,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-07-20 13:56:13,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 37. [2020-07-20 13:56:13,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-20 13:56:13,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-07-20 13:56:13,040 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 18 [2020-07-20 13:56:13,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:56:13,040 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-07-20 13:56:13,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 13:56:13,040 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-07-20 13:56:13,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 13:56:13,041 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:56:13,041 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] [2020-07-20 13:56:13,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:56:13,245 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:56:13,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:56:13,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1223911862, now seen corresponding path program 1 times [2020-07-20 13:56:13,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:56:13,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540256336] [2020-07-20 13:56:13,247 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 [2020-07-20 13:56:13,362 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 13:56:13,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:56:13,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 13:56:13,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:56:13,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:13,439 INFO L350 Elim1Store]: treesize reduction 33, result has 55.4 percent of original size [2020-07-20 13:56:13,440 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 48 [2020-07-20 13:56:13,441 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:13,495 INFO L624 ElimStorePlain]: treesize reduction 16, result has 81.4 percent of original size [2020-07-20 13:56:13,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:13,554 INFO L350 Elim1Store]: treesize reduction 33, result has 55.4 percent of original size [2020-07-20 13:56:13,554 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 48 [2020-07-20 13:56:13,555 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:13,622 INFO L624 ElimStorePlain]: treesize reduction 16, result has 79.7 percent of original size [2020-07-20 13:56:13,623 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:56:13,624 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:77, output treesize:63 [2020-07-20 13:56:13,696 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-20 13:56:13,700 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-20 13:56:13,708 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 [2020-07-20 13:56:13,709 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:13,713 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 [2020-07-20 13:56:13,714 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:13,726 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:13,726 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2020-07-20 13:56:13,727 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:13,768 INFO L624 ElimStorePlain]: treesize reduction 12, result has 84.6 percent of original size [2020-07-20 13:56:13,777 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 [2020-07-20 13:56:13,778 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:13,782 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 [2020-07-20 13:56:13,783 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:13,791 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:13,791 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2020-07-20 13:56:13,792 INFO L544 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:13,803 INFO L624 ElimStorePlain]: treesize reduction 20, result has 25.9 percent of original size [2020-07-20 13:56:13,803 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:56:13,803 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 4 variables, input treesize:110, output treesize:7 [2020-07-20 13:56:13,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:56:13,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 13:56:13,845 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 13:56:13,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:56:13,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540256336] [2020-07-20 13:56:13,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 13:56:13,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-20 13:56:13,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99194479] [2020-07-20 13:56:13,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 13:56:13,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:56:13,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 13:56:13,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 13:56:13,859 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 7 states. [2020-07-20 13:56:14,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:56:14,120 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-07-20 13:56:14,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 13:56:14,121 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-07-20 13:56:14,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:56:14,122 INFO L225 Difference]: With dead ends: 51 [2020-07-20 13:56:14,122 INFO L226 Difference]: Without dead ends: 29 [2020-07-20 13:56:14,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-07-20 13:56:14,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-20 13:56:14,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-07-20 13:56:14,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-20 13:56:14,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-07-20 13:56:14,132 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 21 [2020-07-20 13:56:14,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:56:14,132 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-07-20 13:56:14,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 13:56:14,135 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-07-20 13:56:14,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 13:56:14,136 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:56:14,136 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] [2020-07-20 13:56:14,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:56:14,337 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:56:14,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:56:14,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1696156082, now seen corresponding path program 1 times [2020-07-20 13:56:14,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:56:14,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654347943] [2020-07-20 13:56:14,338 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 [2020-07-20 13:56:14,568 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 13:56:14,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:56:14,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 37 conjunts are in the unsatisfiable core [2020-07-20 13:56:14,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:56:14,591 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-20 13:56:14,591 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 [2020-07-20 13:56:14,592 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:14,603 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:14,607 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 [2020-07-20 13:56:14,608 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:14,618 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:14,620 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. [2020-07-20 13:56:14,620 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:29 [2020-07-20 13:56:14,664 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:14,665 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 [2020-07-20 13:56:14,668 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:14,685 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:14,688 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:14,701 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:14,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:14,705 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 [2020-07-20 13:56:14,706 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:14,719 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:14,720 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:56:14,721 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:56, output treesize:20 [2020-07-20 13:56:14,743 INFO L440 ElimStorePlain]: Different costs {0=[|v_#memory_int_41|], 1=[|v_#memory_int_42|], 4=[|v_#memory_int_44|]} [2020-07-20 13:56:14,745 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:14,758 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:14,761 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:14,772 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:14,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:14,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:14,778 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:14,811 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:14,812 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 46 treesize of output 91 [2020-07-20 13:56:14,816 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:14,877 INFO L624 ElimStorePlain]: treesize reduction 42, result has 55.8 percent of original size [2020-07-20 13:56:14,879 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 13:56:14,880 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 13:56:14,881 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 13:56:14,882 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 13:56:14,883 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 13:56:14,884 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 3 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:14,884 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:61, output treesize:35 [2020-07-20 13:56:14,885 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 13:56:16,640 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 13:56:16,642 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 13:56:16,662 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 13:56:16,679 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 13:56:16,751 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 1] term [2020-07-20 13:56:16,755 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 13:56:16,767 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 [2020-07-20 13:56:16,771 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:16,801 INFO L624 ElimStorePlain]: treesize reduction 4, result has 88.6 percent of original size [2020-07-20 13:56:16,809 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:16,810 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 [2020-07-20 13:56:16,810 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:16,838 INFO L624 ElimStorePlain]: treesize reduction 4, result has 81.0 percent of original size [2020-07-20 13:56:16,839 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:56:16,840 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:53, output treesize:3 [2020-07-20 13:56:16,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:56:16,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 13:56:16,905 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_42|], 3=[|v_#memory_int_41|]} [2020-07-20 13:56:16,909 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:16,921 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:16,923 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:16,934 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:16,935 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. [2020-07-20 13:56:16,935 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:57, output treesize:48 [2020-07-20 13:56:18,939 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_11 Int) (v_DerPreprocessor_12 Int) (v_main_~end~0.base_38 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_11)))) (store .cse0 v_main_~end~0.base_38 (store (store (select .cse0 v_main_~end~0.base_38) 0 v_DerPreprocessor_12) 4 ~unnamed1~0~BLACK))) c_main_~list~0.base) (+ c_main_~list~0.offset 4)) 1))) is different from false [2020-07-20 13:56:18,955 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_40|], 6=[|v_#memory_int_46|]} [2020-07-20 13:56:18,959 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:18,977 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:18,979 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:18,990 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:18,991 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:18,992 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:83, output treesize:89 [2020-07-20 13:56:19,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:19,040 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:19,041 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:19,042 INFO L512 ElimStorePlain]: Eliminatee |v_#memory_int_39| vanished before elimination [2020-07-20 13:56:19,042 INFO L544 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:56:19,042 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 10 variables, input treesize:105, output treesize:1 [2020-07-20 13:56:19,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:56:19,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654347943] [2020-07-20 13:56:19,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 13:56:19,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-07-20 13:56:19,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815365488] [2020-07-20 13:56:19,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 13:56:19,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:56:19,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 13:56:19,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=66, Unknown=3, NotChecked=16, Total=110 [2020-07-20 13:56:19,052 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 11 states. [2020-07-20 13:56:20,275 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 52 DAG size of output: 34 [2020-07-20 13:56:22,304 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((main_~end~0.base Int) (v_main_~end~0.base_35 Int)) (and (= ~unnamed1~0~BLACK (select (select |c_#memory_int| main_~end~0.base) 4)) (or (= v_main_~end~0.base_35 main_~end~0.base) (= ~unnamed1~0~RED (select (select |c_#memory_int| v_main_~end~0.base_35) 4))) (not (= v_main_~end~0.base_35 c_main_~list~0.base)))) (not (= c_main_~list~0.base c_main_~end~0.base)) (forall ((v_DerPreprocessor_13 Int) (v_DerPreprocessor_14 Int) (v_DerPreprocessor_11 Int) (v_DerPreprocessor_12 Int) (v_main_~end~0.base_38 Int) (|v_main_#t~malloc3.base_3| Int)) (or (not (= 0 (select |c_#valid| |v_main_#t~malloc3.base_3|))) (< ~unnamed1~0~BLACK (+ (select (select (let ((.cse0 (let ((.cse1 (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_13)))) (store .cse1 |v_main_#t~malloc3.base_3| (store (store (store (select .cse1 |v_main_#t~malloc3.base_3|) 0 v_DerPreprocessor_14) 4 ~unnamed1~0~RED) 0 v_DerPreprocessor_11))))) (store .cse0 v_main_~end~0.base_38 (store (store (select .cse0 v_main_~end~0.base_38) 0 v_DerPreprocessor_12) 4 ~unnamed1~0~BLACK))) c_main_~list~0.base) (+ c_main_~list~0.offset 4)) 1)))) (= 0 c_main_~list~0.offset) (forall ((v_DerPreprocessor_11 Int) (v_DerPreprocessor_12 Int) (v_main_~end~0.base_38 Int)) (< ~unnamed1~0~BLACK (+ (select (select (let ((.cse2 (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_11)))) (store .cse2 v_main_~end~0.base_38 (store (store (select .cse2 v_main_~end~0.base_38) 0 v_DerPreprocessor_12) 4 ~unnamed1~0~BLACK))) c_main_~list~0.base) (+ c_main_~list~0.offset 4)) 1))) (= ~unnamed1~0~BLACK (select (select |c_#memory_int| c_main_~list~0.base) (+ c_main_~list~0.offset 4))) (= 0 c_main_~end~0.offset)) is different from false [2020-07-20 13:56:23,534 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2020-07-20 13:56:24,841 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 48 DAG size of output: 35 [2020-07-20 13:56:24,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:56:24,949 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2020-07-20 13:56:24,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 13:56:24,950 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-07-20 13:56:24,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:56:24,951 INFO L225 Difference]: With dead ends: 68 [2020-07-20 13:56:24,951 INFO L226 Difference]: Without dead ends: 56 [2020-07-20 13:56:24,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=50, Invalid=110, Unknown=4, NotChecked=46, Total=210 [2020-07-20 13:56:24,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-07-20 13:56:24,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 40. [2020-07-20 13:56:24,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-20 13:56:24,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-07-20 13:56:24,961 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 21 [2020-07-20 13:56:24,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:56:24,961 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-07-20 13:56:24,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 13:56:24,961 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-07-20 13:56:24,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 13:56:24,962 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:56:24,962 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] [2020-07-20 13:56:25,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:56:25,164 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:56:25,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:56:25,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1109350068, now seen corresponding path program 1 times [2020-07-20 13:56:25,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:56:25,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36648090] [2020-07-20 13:56:25,167 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 [2020-07-20 13:56:25,321 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 13:56:25,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:56:25,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 19 conjunts are in the unsatisfiable core [2020-07-20 13:56:25,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:56:25,347 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-20 13:56:25,348 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 [2020-07-20 13:56:25,348 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:25,360 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:25,365 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 [2020-07-20 13:56:25,365 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:25,376 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:25,377 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. [2020-07-20 13:56:25,378 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:26 [2020-07-20 13:56:25,411 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:25,412 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 [2020-07-20 13:56:25,413 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 13:56:25,413 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:25,426 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:25,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:25,434 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 13:56:25,434 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:25,443 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:25,446 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 13:56:25,446 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:25,453 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:25,453 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. [2020-07-20 13:56:25,454 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:53, output treesize:14 [2020-07-20 13:56:25,465 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-07-20 13:56:25,466 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:25,471 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:25,472 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:25,472 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:23 [2020-07-20 13:56:25,529 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 28 treesize of output 10 [2020-07-20 13:56:25,529 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:25,533 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:25,534 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:56:25,534 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:32, output treesize:3 [2020-07-20 13:56:25,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:56:25,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 13:56:25,607 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_49|], 3=[|v_#memory_int_53|]} [2020-07-20 13:56:25,609 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:25,622 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:25,625 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:25,633 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:25,634 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. [2020-07-20 13:56:25,634 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:60, output treesize:47 [2020-07-20 13:56:25,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:25,690 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:25,691 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:25,694 INFO L512 ElimStorePlain]: Eliminatee |v_#memory_int_48| vanished before elimination [2020-07-20 13:56:25,694 INFO L544 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:56:25,694 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 10 variables, input treesize:66, output treesize:1 [2020-07-20 13:56:25,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:56:25,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36648090] [2020-07-20 13:56:25,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 13:56:25,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-07-20 13:56:25,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846884235] [2020-07-20 13:56:25,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 13:56:25,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:56:25,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 13:56:25,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-07-20 13:56:25,700 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 11 states. [2020-07-20 13:56:32,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:56:32,932 INFO L93 Difference]: Finished difference Result 105 states and 120 transitions. [2020-07-20 13:56:32,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-20 13:56:32,932 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-07-20 13:56:32,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:56:32,934 INFO L225 Difference]: With dead ends: 105 [2020-07-20 13:56:32,934 INFO L226 Difference]: Without dead ends: 93 [2020-07-20 13:56:32,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=88, Invalid=217, Unknown=1, NotChecked=0, Total=306 [2020-07-20 13:56:32,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-07-20 13:56:32,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 43. [2020-07-20 13:56:32,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-20 13:56:32,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-07-20 13:56:32,944 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 21 [2020-07-20 13:56:32,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:56:32,944 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-07-20 13:56:32,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 13:56:32,945 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-07-20 13:56:32,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 13:56:32,945 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:56:32,946 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] [2020-07-20 13:56:33,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:56:33,150 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:56:33,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:56:33,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1223476830, now seen corresponding path program 1 times [2020-07-20 13:56:33,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:56:33,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355242135] [2020-07-20 13:56:33,151 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 [2020-07-20 13:56:33,409 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:56:33,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:56:33,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 40 conjunts are in the unsatisfiable core [2020-07-20 13:56:33,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:56:33,434 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-20 13:56:33,434 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 [2020-07-20 13:56:33,435 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:33,447 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:33,448 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:56:33,448 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:21 [2020-07-20 13:56:33,501 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:33,502 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 [2020-07-20 13:56:33,503 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:33,591 INFO L624 ElimStorePlain]: treesize reduction 28, result has 74.5 percent of original size [2020-07-20 13:56:33,597 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 [2020-07-20 13:56:33,598 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:33,620 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:33,628 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 [2020-07-20 13:56:33,629 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:33,650 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:33,651 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:56:33,651 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:80, output treesize:56 [2020-07-20 13:56:33,750 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:33,751 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 [2020-07-20 13:56:33,752 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:33,818 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:33,829 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:33,879 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:34,096 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2020-07-20 13:56:34,097 INFO L350 Elim1Store]: treesize reduction 254, result has 40.9 percent of original size [2020-07-20 13:56:34,097 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 233 treesize of output 275 [2020-07-20 13:56:34,099 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[11, 3, 2, 1] term [2020-07-20 13:56:34,100 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 11 disjuncts [2020-07-20 13:56:34,101 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:34,216 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2020-07-20 13:56:34,217 INFO L624 ElimStorePlain]: treesize reduction 144, result has 56.8 percent of original size [2020-07-20 13:56:34,239 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:34,240 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 146 treesize of output 156 [2020-07-20 13:56:34,241 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 13:56:34,242 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 13:56:34,244 INFO L544 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:34,317 INFO L624 ElimStorePlain]: treesize reduction 58, result has 72.5 percent of original size [2020-07-20 13:56:34,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:34,326 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 56 [2020-07-20 13:56:34,327 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:34,349 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:34,351 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 4 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:34,351 INFO L244 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:274, output treesize:92 [2020-07-20 13:56:34,444 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 59 [2020-07-20 13:56:34,445 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:34,463 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:34,464 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:34,465 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:106, output treesize:83 [2020-07-20 13:56:34,523 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:34,524 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 83 treesize of output 69 [2020-07-20 13:56:34,526 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-07-20 13:56:34,527 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-07-20 13:56:34,527 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-07-20 13:56:34,531 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:34,559 INFO L624 ElimStorePlain]: treesize reduction 78, result has 14.3 percent of original size [2020-07-20 13:56:34,559 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:56:34,560 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:87, output treesize:4 [2020-07-20 13:56:34,577 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:56:34,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 13:56:34,636 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.offset_38|], 6=[|v_#memory_$Pointer$.base_35|, |v_#memory_$Pointer$.base_38|, |v_#memory_$Pointer$.offset_35|]} [2020-07-20 13:56:34,641 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:34,688 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:34,695 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:34,726 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:34,729 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:34,751 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:34,753 INFO L544 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:34,769 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:34,770 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 4 dim-2 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:34,770 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 7 variables, input treesize:141, output treesize:140 [2020-07-20 13:56:34,835 INFO L440 ElimStorePlain]: Different costs {6=[|#memory_$Pointer$.offset|], 14=[|#memory_$Pointer$.base|]} [2020-07-20 13:56:34,844 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 95758 treesize of output 95726 [2020-07-20 13:56:34,863 INFO L544 ElimStorePlain]: Start of recursive call 2: 8 dim-0 vars, End of recursive call: 8 dim-0 vars, and 2 xjuncts. [2020-07-20 13:56:38,867 WARN L193 SmtUtils]: Spent 4.00 s on a formula simplification. DAG size of input: 290 DAG size of output: 115 [2020-07-20 13:56:38,868 INFO L624 ElimStorePlain]: treesize reduction 92768, result has 3.1 percent of original size [2020-07-20 13:56:38,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:38,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:38,907 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:38,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:38,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:38,912 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:38,921 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 85874 treesize of output 85618 [2020-07-20 13:56:38,943 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2020-07-20 13:56:38,955 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:38,956 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:38,956 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:38,957 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:38,958 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:38,958 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:38,967 WARN L234 Elim1Store]: Array PQE input equivalent to true [2020-07-20 13:56:38,968 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:39,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:39,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:39,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:39,030 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:39,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:39,032 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:39,047 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 83150 treesize of output 82894 [2020-07-20 13:56:39,067 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2020-07-20 13:56:40,944 WARN L193 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 312 DAG size of output: 54 [2020-07-20 13:56:40,946 INFO L624 ElimStorePlain]: treesize reduction 82412, result has 0.1 percent of original size [2020-07-20 13:56:41,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:41,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:41,014 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:41,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:41,019 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:41,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:41,042 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 88870 treesize of output 88614 [2020-07-20 13:56:41,068 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2020-07-20 13:56:41,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:41,131 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:41,132 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:41,134 INFO L544 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:43,411 WARN L193 SmtUtils]: Spent 2.28 s on a formula simplification. DAG size of input: 396 DAG size of output: 75 [2020-07-20 13:56:43,412 INFO L624 ElimStorePlain]: treesize reduction 87915, result has 0.4 percent of original size [2020-07-20 13:56:43,920 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 103 [2020-07-20 13:56:43,921 INFO L624 ElimStorePlain]: treesize reduction 78, result has 83.4 percent of original size [2020-07-20 13:56:46,857 WARN L193 SmtUtils]: Spent 2.93 s on a formula simplification. DAG size of input: 453 DAG size of output: 142 [2020-07-20 13:56:46,858 INFO L624 ElimStorePlain]: treesize reduction 85087, result has 0.7 percent of original size [2020-07-20 13:56:46,870 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:46,871 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:46,871 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:46,872 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:46,873 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:46,873 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:46,878 WARN L234 Elim1Store]: Array PQE input equivalent to true [2020-07-20 13:56:46,879 INFO L544 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:46,883 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:46,884 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:46,885 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:46,886 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:46,886 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:46,887 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:46,892 WARN L234 Elim1Store]: Array PQE input equivalent to true [2020-07-20 13:56:46,892 INFO L544 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:46,898 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:46,899 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:46,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:46,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:46,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:46,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:46,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:46,908 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:46,914 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 112 treesize of output 104 [2020-07-20 13:56:46,915 INFO L544 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 2 xjuncts. [2020-07-20 13:56:46,958 INFO L624 ElimStorePlain]: treesize reduction 75, result has 21.1 percent of original size [2020-07-20 13:56:46,972 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:47,768 WARN L193 SmtUtils]: Spent 794.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 146 [2020-07-20 13:56:47,769 INFO L624 ElimStorePlain]: treesize reduction 17, result has 97.2 percent of original size [2020-07-20 13:56:47,775 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:47,775 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:47,776 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:47,777 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:47,777 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:47,778 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:47,782 WARN L234 Elim1Store]: Array PQE input equivalent to true [2020-07-20 13:56:47,782 INFO L544 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:47,787 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:47,788 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:47,788 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:47,789 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:47,789 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:47,790 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:47,796 WARN L234 Elim1Store]: Array PQE input equivalent to true [2020-07-20 13:56:47,797 INFO L544 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:47,807 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:47,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:47,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:47,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:47,815 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:47,821 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 1136 treesize of output 1104 [2020-07-20 13:56:47,825 INFO L544 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 2 xjuncts. [2020-07-20 13:56:48,191 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 31 [2020-07-20 13:56:48,191 INFO L624 ElimStorePlain]: treesize reduction 1023, result has 4.0 percent of original size [2020-07-20 13:56:48,227 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:48,251 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:48,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:48,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:48,253 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:48,263 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 85874 treesize of output 85618 [2020-07-20 13:56:48,289 INFO L544 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 2 xjuncts. [2020-07-20 13:56:48,300 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:48,301 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:48,302 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:48,303 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:48,303 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:48,304 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:48,314 WARN L234 Elim1Store]: Array PQE input equivalent to true [2020-07-20 13:56:48,314 INFO L544 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:48,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:48,362 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:48,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:48,364 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:48,381 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 83150 treesize of output 82894 [2020-07-20 13:56:48,399 INFO L544 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 2 xjuncts. [2020-07-20 13:56:50,288 WARN L193 SmtUtils]: Spent 1.89 s on a formula simplification. DAG size of input: 298 DAG size of output: 54 [2020-07-20 13:56:50,289 INFO L624 ElimStorePlain]: treesize reduction 82416, result has 0.1 percent of original size [2020-07-20 13:56:50,316 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:50,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:50,317 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:50,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:50,331 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 88870 treesize of output 88614 [2020-07-20 13:56:50,354 INFO L544 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 2 xjuncts. [2020-07-20 13:56:50,475 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:50,663 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-07-20 13:56:50,664 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:50,674 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 20 case distinctions, treesize of input 94211273553 treesize of output 93817013256 [2020-07-20 13:56:57,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355242135] [2020-07-20 13:56:57,914 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2020-07-20 13:56:57,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:56:57,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-07-20 13:56:57,914 ERROR L206 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-07-20 13:56:57,914 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 13:56:58,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:56:58,136 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-07-20 13:56:58,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:56:58 BoogieIcfgContainer [2020-07-20 13:56:58,136 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 13:56:58,138 INFO L168 Benchmark]: Toolchain (without parser) took 60260.68 ms. Allocated memory was 136.8 MB in the beginning and 1.1 GB in the end (delta: 992.5 MB). Free memory was 100.2 MB in the beginning and 555.5 MB in the end (delta: -455.3 MB). Peak memory consumption was 935.1 MB. Max. memory is 7.1 GB. [2020-07-20 13:56:58,138 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-20 13:56:58,139 INFO L168 Benchmark]: CACSL2BoogieTranslator took 609.55 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 99.8 MB in the beginning and 167.9 MB in the end (delta: -68.1 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-07-20 13:56:58,139 INFO L168 Benchmark]: Boogie Preprocessor took 64.13 ms. Allocated memory is still 200.8 MB. Free memory was 167.9 MB in the beginning and 164.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-07-20 13:56:58,139 INFO L168 Benchmark]: RCFGBuilder took 630.16 ms. Allocated memory is still 200.8 MB. Free memory was 164.9 MB in the beginning and 117.5 MB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 7.1 GB. [2020-07-20 13:56:58,140 INFO L168 Benchmark]: TraceAbstraction took 58951.73 ms. Allocated memory was 200.8 MB in the beginning and 1.1 GB in the end (delta: 928.5 MB). Free memory was 117.5 MB in the beginning and 555.5 MB in the end (delta: -438.0 MB). Peak memory consumption was 888.4 MB. Max. memory is 7.1 GB. [2020-07-20 13:56:58,141 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 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 609.55 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 99.8 MB in the beginning and 167.9 MB in the end (delta: -68.1 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.13 ms. Allocated memory is still 200.8 MB. Free memory was 167.9 MB in the beginning and 164.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 630.16 ms. Allocated memory is still 200.8 MB. Free memory was 164.9 MB in the beginning and 117.5 MB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 58951.73 ms. Allocated memory was 200.8 MB in the beginning and 1.1 GB in the end (delta: 928.5 MB). Free memory was 117.5 MB in the beginning and 555.5 MB in the end (delta: -438.0 MB). Peak memory consumption was 888.4 MB. 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: 58.8s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 22.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 197 SDtfs, 297 SDslu, 722 SDs, 0 SdLazy, 542 SolverSat, 98 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 15.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 219 GetRequests, 148 SyntacticMatches, 7 SemanticMatches, 64 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 13.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=7, 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, 134 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 8.5s InterpolantComputationTime, 122 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 191 ConstructedInterpolants, 32 QuantifiedInterpolants, 57920 SizeOfPredicates, 60 NumberOfNonLiveVariables, 554 ConjunctsInSsa, 119 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 2/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...