/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_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 16:22:14,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 16:22:14,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 16:22:14,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 16:22:14,613 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 16:22:14,614 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 16:22:14,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 16:22:14,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 16:22:14,620 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 16:22:14,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 16:22:14,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 16:22:14,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 16:22:14,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 16:22:14,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 16:22:14,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 16:22:14,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 16:22:14,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 16:22:14,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 16:22:14,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 16:22:14,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 16:22:14,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 16:22:14,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 16:22:14,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 16:22:14,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 16:22:14,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 16:22:14,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 16:22:14,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 16:22:14,641 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 16:22:14,642 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 16:22:14,642 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 16:22:14,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 16:22:14,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 16:22:14,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 16:22:14,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 16:22:14,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 16:22:14,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 16:22:14,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 16:22:14,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 16:22:14,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 16:22:14,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 16:22:14,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 16:22:14,654 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 16:22:14,688 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 16:22:14,688 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 16:22:14,691 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 16:22:14,691 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 16:22:14,692 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 16:22:14,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 16:22:14,692 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 16:22:14,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 16:22:14,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 16:22:14,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 16:22:14,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 16:22:14,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 16:22:14,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 16:22:14,695 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 16:22:14,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 16:22:14,696 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 16:22:14,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 16:22:14,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 16:22:14,696 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 16:22:14,697 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 16:22:14,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 16:22:14,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:22:14,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 16:22:14,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 16:22:14,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 16:22:14,698 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 16:22:14,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:14,698 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 16:22:14,698 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 16:22:14,699 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_VARIABLES 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 -> 2 [2020-07-21 16:22:15,006 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 16:22:15,020 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 16:22:15,025 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 16:22:15,027 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 16:22:15,028 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 16:22:15,029 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-07-21 16:22:15,116 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/813113204/e89d7b7fec244343b11b034a31010705/FLAG8a5e8764e [2020-07-21 16:22:15,727 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 16:22:15,729 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-07-21 16:22:15,746 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/813113204/e89d7b7fec244343b11b034a31010705/FLAG8a5e8764e [2020-07-21 16:22:16,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/813113204/e89d7b7fec244343b11b034a31010705 [2020-07-21 16:22:16,031 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 16:22:16,034 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 16:22:16,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 16:22:16,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 16:22:16,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 16:22:16,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:22:16" (1/1) ... [2020-07-21 16:22:16,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cee54b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:16, skipping insertion in model container [2020-07-21 16:22:16,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:22:16" (1/1) ... [2020-07-21 16:22:16,055 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 16:22:16,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 16:22:16,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:22:16,610 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 16:22:16,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:22:16,711 INFO L208 MainTranslator]: Completed translation [2020-07-21 16:22:16,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:16 WrapperNode [2020-07-21 16:22:16,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 16:22:16,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 16:22:16,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 16:22:16,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 16:22:16,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:16" (1/1) ... [2020-07-21 16:22:16,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:16" (1/1) ... [2020-07-21 16:22:16,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:16" (1/1) ... [2020-07-21 16:22:16,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:16" (1/1) ... [2020-07-21 16:22:16,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:16" (1/1) ... [2020-07-21 16:22:16,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:16" (1/1) ... [2020-07-21 16:22:16,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:16" (1/1) ... [2020-07-21 16:22:16,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 16:22:16,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 16:22:16,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 16:22:16,789 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 16:22:16,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:22:16,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 16:22:16,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 16:22:16,854 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 16:22:16,855 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-21 16:22:16,855 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-21 16:22:16,855 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-21 16:22:16,855 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-21 16:22:16,855 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-21 16:22:16,856 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-21 16:22:16,856 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-21 16:22:16,856 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-21 16:22:16,856 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-21 16:22:16,856 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-21 16:22:16,857 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-21 16:22:16,857 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-21 16:22:16,857 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-21 16:22:16,857 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-21 16:22:16,858 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-21 16:22:16,858 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-21 16:22:16,858 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-21 16:22:16,858 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-21 16:22:16,858 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-21 16:22:16,859 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-21 16:22:16,859 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-21 16:22:16,859 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-21 16:22:16,859 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-21 16:22:16,859 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-21 16:22:16,860 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-21 16:22:16,860 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-21 16:22:16,860 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-21 16:22:16,860 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-21 16:22:16,860 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-21 16:22:16,861 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-21 16:22:16,861 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-21 16:22:16,861 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-21 16:22:16,861 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-21 16:22:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-21 16:22:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-21 16:22:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-21 16:22:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-21 16:22:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-21 16:22:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-21 16:22:16,863 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-21 16:22:16,863 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-21 16:22:16,863 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-21 16:22:16,863 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-21 16:22:16,863 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-21 16:22:16,863 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-21 16:22:16,863 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-21 16:22:16,864 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-21 16:22:16,864 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-21 16:22:16,864 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-21 16:22:16,864 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-21 16:22:16,864 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 16:22:16,864 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-21 16:22:16,865 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-21 16:22:16,865 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 16:22:16,865 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-21 16:22:16,865 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-21 16:22:16,865 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-21 16:22:16,866 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-21 16:22:16,866 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-21 16:22:16,866 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 16:22:16,866 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-21 16:22:16,866 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-21 16:22:16,866 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-21 16:22:16,866 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 16:22:16,867 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-21 16:22:16,867 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-21 16:22:16,867 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-21 16:22:16,867 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-21 16:22:16,867 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-21 16:22:16,867 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-21 16:22:16,868 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-21 16:22:16,868 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-21 16:22:16,868 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-21 16:22:16,868 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-21 16:22:16,868 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-21 16:22:16,868 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-21 16:22:16,869 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-21 16:22:16,869 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-21 16:22:16,869 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-21 16:22:16,869 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-21 16:22:16,869 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-21 16:22:16,869 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-21 16:22:16,870 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-21 16:22:16,870 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-21 16:22:16,870 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-21 16:22:16,870 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-21 16:22:16,870 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-21 16:22:16,870 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-21 16:22:16,870 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-21 16:22:16,871 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-21 16:22:16,871 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-21 16:22:16,871 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-21 16:22:16,871 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-21 16:22:16,871 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-21 16:22:16,871 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-21 16:22:16,872 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-21 16:22:16,872 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-21 16:22:16,872 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-21 16:22:16,872 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-21 16:22:16,872 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-21 16:22:16,872 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-21 16:22:16,872 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-21 16:22:16,873 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-21 16:22:16,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 16:22:16,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 16:22:16,873 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 16:22:16,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 16:22:16,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 16:22:16,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 16:22:16,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 16:22:16,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 16:22:16,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 16:22:16,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 16:22:16,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 16:22:17,632 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 16:22:17,632 INFO L295 CfgBuilder]: Removed 17 assume(true) statements. [2020-07-21 16:22:17,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:22:17 BoogieIcfgContainer [2020-07-21 16:22:17,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 16:22:17,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 16:22:17,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 16:22:17,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 16:22:17,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:22:16" (1/3) ... [2020-07-21 16:22:17,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7529e76f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:22:17, skipping insertion in model container [2020-07-21 16:22:17,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:16" (2/3) ... [2020-07-21 16:22:17,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7529e76f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:22:17, skipping insertion in model container [2020-07-21 16:22:17,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:22:17" (3/3) ... [2020-07-21 16:22:17,646 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2020-07-21 16:22:17,658 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 16:22:17,668 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-07-21 16:22:17,686 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-07-21 16:22:17,713 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 16:22:17,713 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 16:22:17,713 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 16:22:17,713 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 16:22:17,714 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 16:22:17,714 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 16:22:17,714 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 16:22:17,714 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 16:22:17,737 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-07-21 16:22:17,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 16:22:17,744 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:22:17,745 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:22:17,746 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:22:17,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:22:17,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1255802584, now seen corresponding path program 1 times [2020-07-21 16:22:17,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:22:17,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204330671] [2020-07-21 16:22:17,769 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:17,997 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:22:17,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:22:18,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 16:22:18,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:22:18,119 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-07-21 16:22:18,124 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:18,137 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:18,138 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:22:18,139 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:8, output treesize:4 [2020-07-21 16:22:18,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:22:18,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:22:18,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204330671] [2020-07-21 16:22:18,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:22:18,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 16:22:18,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968981276] [2020-07-21 16:22:18,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 16:22:18,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:22:18,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 16:22:18,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 16:22:18,207 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 4 states. [2020-07-21 16:22:18,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:22:18,414 INFO L93 Difference]: Finished difference Result 104 states and 170 transitions. [2020-07-21 16:22:18,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 16:22:18,416 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-07-21 16:22:18,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:22:18,427 INFO L225 Difference]: With dead ends: 104 [2020-07-21 16:22:18,428 INFO L226 Difference]: Without dead ends: 49 [2020-07-21 16:22:18,432 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 [2020-07-21 16:22:18,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-07-21 16:22:18,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2020-07-21 16:22:18,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-21 16:22:18,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2020-07-21 16:22:18,482 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 10 [2020-07-21 16:22:18,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:22:18,482 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2020-07-21 16:22:18,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 16:22:18,483 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2020-07-21 16:22:18,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 16:22:18,483 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:22:18,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:22:18,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:18,700 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:22:18,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:22:18,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1890143313, now seen corresponding path program 1 times [2020-07-21 16:22:18,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:22:18,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301465932] [2020-07-21 16:22:18,703 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:18,823 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:22:18,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:22:18,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 16:22:18,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:22:18,844 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-21 16:22:18,845 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:18,848 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:18,848 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:22:18,849 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-07-21 16:22:18,866 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-07-21 16:22:18,867 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:18,870 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:18,871 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:22:18,871 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-21 16:22:18,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:22:18,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:22:18,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301465932] [2020-07-21 16:22:18,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:22:18,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 16:22:18,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929549610] [2020-07-21 16:22:18,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 16:22:18,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:22:18,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 16:22:18,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 16:22:18,882 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 4 states. [2020-07-21 16:22:18,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:22:18,964 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2020-07-21 16:22:18,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 16:22:18,965 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-07-21 16:22:18,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:22:18,966 INFO L225 Difference]: With dead ends: 43 [2020-07-21 16:22:18,967 INFO L226 Difference]: Without dead ends: 41 [2020-07-21 16:22:18,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 16:22:18,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-21 16:22:18,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-07-21 16:22:18,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-21 16:22:18,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-07-21 16:22:18,975 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 12 [2020-07-21 16:22:18,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:22:18,975 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-07-21 16:22:18,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 16:22:18,976 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-07-21 16:22:18,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 16:22:18,976 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:22:18,977 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:22:19,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:19,191 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:22:19,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:22:19,192 INFO L82 PathProgramCache]: Analyzing trace with hash 290038970, now seen corresponding path program 1 times [2020-07-21 16:22:19,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:22:19,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312654807] [2020-07-21 16:22:19,193 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:19,305 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:22:19,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:22:19,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 16:22:19,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:22:19,321 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-21 16:22:19,321 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:19,325 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:19,325 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:22:19,326 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-07-21 16:22:19,345 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-07-21 16:22:19,346 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:19,349 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:19,349 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:22:19,350 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-21 16:22:19,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:22:19,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:22:19,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312654807] [2020-07-21 16:22:19,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:22:19,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 16:22:19,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277436448] [2020-07-21 16:22:19,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 16:22:19,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:22:19,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 16:22:19,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 16:22:19,363 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 5 states. [2020-07-21 16:22:19,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:22:19,551 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2020-07-21 16:22:19,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 16:22:19,552 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-21 16:22:19,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:22:19,554 INFO L225 Difference]: With dead ends: 66 [2020-07-21 16:22:19,554 INFO L226 Difference]: Without dead ends: 64 [2020-07-21 16:22:19,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 16:22:19,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-07-21 16:22:19,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 48. [2020-07-21 16:22:19,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-07-21 16:22:19,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-07-21 16:22:19,567 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 14 [2020-07-21 16:22:19,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:22:19,568 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-07-21 16:22:19,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 16:22:19,568 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-07-21 16:22:19,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 16:22:19,569 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:22:19,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:22:19,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:19,783 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:22:19,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:22:19,783 INFO L82 PathProgramCache]: Analyzing trace with hash 2060721718, now seen corresponding path program 1 times [2020-07-21 16:22:19,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:22:19,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244511079] [2020-07-21 16:22:19,785 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:19,908 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:22:19,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:22:19,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 16:22:19,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:22:19,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 16:22:20,112 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2020-07-21 16:22:20,114 INFO L350 Elim1Store]: treesize reduction 106, result has 48.5 percent of original size [2020-07-21 16:22:20,118 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 2 case distinctions, treesize of input 74 treesize of output 107 [2020-07-21 16:22:20,120 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:20,327 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-07-21 16:22:20,329 INFO L624 ElimStorePlain]: treesize reduction 36, result has 80.1 percent of original size [2020-07-21 16:22:20,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 16:22:20,484 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2020-07-21 16:22:20,485 INFO L350 Elim1Store]: treesize reduction 115, result has 44.2 percent of original size [2020-07-21 16:22:20,486 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 2 case distinctions, treesize of input 74 treesize of output 98 [2020-07-21 16:22:20,487 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:20,630 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-07-21 16:22:20,631 INFO L624 ElimStorePlain]: treesize reduction 36, result has 78.6 percent of original size [2020-07-21 16:22:20,638 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 16:22:20,642 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 16:22:20,645 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-21 16:22:20,652 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 16:22:20,654 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 16:22:20,657 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 16:22:20,660 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-21 16:22:20,664 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 16:22:20,667 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 16:22:20,672 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 16:22:20,674 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 16:22:20,677 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-21 16:22:20,682 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 16:22:20,685 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 16:22:20,687 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-21 16:22:20,691 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-07-21 16:22:20,696 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-21 16:22:20,697 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 16:22:20,700 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 16:22:20,704 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-21 16:22:20,706 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 16:22:20,710 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 16:22:20,713 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 16:22:20,717 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 16:22:20,721 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 16:22:20,724 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 16:22:20,726 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-21 16:22:20,730 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 16:22:20,734 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 16:22:20,738 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:22:20,739 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:149, output treesize:15 [2020-07-21 16:22:20,764 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-21 16:22:20,765 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:20,772 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:20,778 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-21 16:22:20,778 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:20,784 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:20,784 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:22:20,785 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2020-07-21 16:22:20,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:22:20,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:22:20,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244511079] [2020-07-21 16:22:20,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:22:20,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 16:22:20,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821248494] [2020-07-21 16:22:20,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 16:22:20,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:22:20,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 16:22:20,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 16:22:20,798 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 4 states. [2020-07-21 16:22:20,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:22:20,904 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2020-07-21 16:22:20,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 16:22:20,905 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-07-21 16:22:20,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:22:20,905 INFO L225 Difference]: With dead ends: 48 [2020-07-21 16:22:20,906 INFO L226 Difference]: Without dead ends: 46 [2020-07-21 16:22:20,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 16:22:20,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-07-21 16:22:20,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-07-21 16:22:20,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-07-21 16:22:20,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-07-21 16:22:20,913 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 15 [2020-07-21 16:22:20,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:22:20,913 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-07-21 16:22:20,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 16:22:20,913 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-07-21 16:22:20,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-21 16:22:20,914 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:22:20,914 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:22:21,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:21,116 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:22:21,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:22:21,117 INFO L82 PathProgramCache]: Analyzing trace with hash 373775322, now seen corresponding path program 1 times [2020-07-21 16:22:21,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:22:21,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140410048] [2020-07-21 16:22:21,118 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:21,241 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:22:21,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:22:21,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 22 conjunts are in the unsatisfiable core [2020-07-21 16:22:21,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:22:21,298 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-21 16:22:21,299 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2020-07-21 16:22:21,300 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:21,308 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:21,309 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:22:21,309 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:15 [2020-07-21 16:22:21,395 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:21,395 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 69 [2020-07-21 16:22:21,397 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:21,443 INFO L624 ElimStorePlain]: treesize reduction 28, result has 68.5 percent of original size [2020-07-21 16:22:21,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 16:22:21,448 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:21,460 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:21,463 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 16:22:21,464 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:59, output treesize:28 [2020-07-21 16:22:21,533 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:21,534 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 37 [2020-07-21 16:22:21,536 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:21,556 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:21,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 16:22:21,564 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:21,574 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:21,576 INFO L544 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:22:21,576 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:66, output treesize:4 [2020-07-21 16:22:21,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:22:21,582 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:22:21,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140410048] [2020-07-21 16:22:21,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:22:21,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 16:22:21,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621928503] [2020-07-21 16:22:21,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 16:22:21,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:22:21,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 16:22:21,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-07-21 16:22:21,585 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 5 states. [2020-07-21 16:22:21,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:22:21,740 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2020-07-21 16:22:21,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 16:22:21,741 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-21 16:22:21,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:22:21,742 INFO L225 Difference]: With dead ends: 46 [2020-07-21 16:22:21,742 INFO L226 Difference]: Without dead ends: 44 [2020-07-21 16:22:21,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-07-21 16:22:21,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-21 16:22:21,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-07-21 16:22:21,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-21 16:22:21,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-07-21 16:22:21,749 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 17 [2020-07-21 16:22:21,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:22:21,749 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-07-21 16:22:21,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 16:22:21,750 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-07-21 16:22:21,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-21 16:22:21,750 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:22:21,751 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:22:21,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:21,966 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:22:21,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:22:21,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1568846049, now seen corresponding path program 1 times [2020-07-21 16:22:21,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:22:21,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427677705] [2020-07-21 16:22:21,968 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:22,053 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:22:22,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:22:22,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 16:22:22,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:22:22,090 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-07-21 16:22:22,091 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:22,094 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:22,094 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:22:22,095 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-21 16:22:22,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:22:22,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:22:22,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427677705] [2020-07-21 16:22:22,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:22:22,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 16:22:22,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769560854] [2020-07-21 16:22:22,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 16:22:22,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:22:22,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 16:22:22,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 16:22:22,105 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 5 states. [2020-07-21 16:22:22,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:22:22,219 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2020-07-21 16:22:22,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 16:22:22,220 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-07-21 16:22:22,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:22:22,221 INFO L225 Difference]: With dead ends: 59 [2020-07-21 16:22:22,221 INFO L226 Difference]: Without dead ends: 47 [2020-07-21 16:22:22,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 16:22:22,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-07-21 16:22:22,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-07-21 16:22:22,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-07-21 16:22:22,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-07-21 16:22:22,229 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 18 [2020-07-21 16:22:22,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:22:22,229 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-07-21 16:22:22,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 16:22:22,229 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-07-21 16:22:22,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-21 16:22:22,230 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:22:22,230 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:22:22,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:22,446 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:22:22,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:22:22,447 INFO L82 PathProgramCache]: Analyzing trace with hash 777661568, now seen corresponding path program 1 times [2020-07-21 16:22:22,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:22:22,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220135155] [2020-07-21 16:22:22,448 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:22,550 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:22:22,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:22:22,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 16:22:22,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:22:22,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 16:22:22,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 16:22:22,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 16:22:22,576 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 17 [2020-07-21 16:22:22,577 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:22,587 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:22,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 16:22:22,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 16:22:22,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 16:22:22,596 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 17 [2020-07-21 16:22:22,596 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:22,608 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:22,608 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:22:22,609 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:55, output treesize:33 [2020-07-21 16:22:22,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 16:22:22,650 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2020-07-21 16:22:22,651 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:22,663 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:22,668 INFO L350 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2020-07-21 16:22:22,669 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2020-07-21 16:22:22,669 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:22,674 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:22,675 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:22:22,675 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:47, output treesize:7 [2020-07-21 16:22:22,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:22:22,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:22:22,725 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 16:22:22,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:22:22,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220135155] [2020-07-21 16:22:22,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 16:22:22,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 16:22:22,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781540779] [2020-07-21 16:22:22,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 16:22:22,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:22:22,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 16:22:22,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-21 16:22:22,742 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 7 states. [2020-07-21 16:22:23,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:22:23,005 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-07-21 16:22:23,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 16:22:23,006 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-07-21 16:22:23,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:22:23,007 INFO L225 Difference]: With dead ends: 63 [2020-07-21 16:22:23,007 INFO L226 Difference]: Without dead ends: 41 [2020-07-21 16:22:23,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-07-21 16:22:23,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-21 16:22:23,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-07-21 16:22:23,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-21 16:22:23,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-07-21 16:22:23,014 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 21 [2020-07-21 16:22:23,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:22:23,014 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-07-21 16:22:23,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 16:22:23,014 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-07-21 16:22:23,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-21 16:22:23,015 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:22:23,015 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, 1, 1, 1, 1] [2020-07-21 16:22:23,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:23,228 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:22:23,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:22:23,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1056872398, now seen corresponding path program 1 times [2020-07-21 16:22:23,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:22:23,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106031440] [2020-07-21 16:22:23,231 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:23,339 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:22:23,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:22:23,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 32 conjunts are in the unsatisfiable core [2020-07-21 16:22:23,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:22:23,367 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-21 16:22:23,368 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2020-07-21 16:22:23,368 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:23,380 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:23,385 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-21 16:22:23,386 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:23,401 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:23,402 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 16:22:23,402 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:26 [2020-07-21 16:22:23,486 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:23,487 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-07-21 16:22:23,488 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:23,560 INFO L624 ElimStorePlain]: treesize reduction 14, result has 88.6 percent of original size [2020-07-21 16:22:23,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 16:22:23,570 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:23,594 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:23,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 16:22:23,606 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 [2020-07-21 16:22:23,606 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:23,626 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:23,635 INFO L544 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 16:22:23,656 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:23,682 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:23,683 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 1 case distinctions, treesize of input 45 treesize of output 48 [2020-07-21 16:22:23,684 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:23,724 INFO L624 ElimStorePlain]: treesize reduction 20, result has 69.2 percent of original size [2020-07-21 16:22:23,726 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:22:23,726 INFO L244 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:111, output treesize:24 [2020-07-21 16:22:23,810 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:23,810 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2020-07-21 16:22:23,812 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:23,871 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:23,873 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.base_34|, |v_#memory_int_44|, |v_#memory_int_42|, |v_#memory_int_43|], 4=[|v_#memory_int_46|]} [2020-07-21 16:22:23,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 16:22:23,879 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:23,927 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:23,930 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 16:22:23,963 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:23,967 INFO L544 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 16:22:23,990 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:23,992 INFO L544 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 16:22:24,014 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:24,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 16:22:24,087 INFO L350 Elim1Store]: treesize reduction 65, result has 46.7 percent of original size [2020-07-21 16:22:24,088 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 3 case distinctions, treesize of input 57 treesize of output 85 [2020-07-21 16:22:24,090 INFO L544 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:24,181 INFO L624 ElimStorePlain]: treesize reduction 18, result has 80.9 percent of original size [2020-07-21 16:22:24,188 INFO L544 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, 5 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-07-21 16:22:24,189 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 11 variables, input treesize:246, output treesize:40 [2020-07-21 16:22:24,299 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13 [2020-07-21 16:22:24,300 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:24,307 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:24,308 INFO L544 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:22:24,308 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:49, output treesize:3 [2020-07-21 16:22:24,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:22:24,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:22:24,362 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.base_34|, |v_#memory_int_44|, |v_#memory_int_43|], 3=[|v_#memory_int_42|]} [2020-07-21 16:22:24,370 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:24,589 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2020-07-21 16:22:24,591 INFO L624 ElimStorePlain]: treesize reduction 78, result has 51.6 percent of original size [2020-07-21 16:22:24,597 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 16:22:24,620 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:24,623 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 16:22:24,651 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:24,654 INFO L544 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 16:22:24,667 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:24,669 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 4 dim-2 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2020-07-21 16:22:24,669 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 7 variables, input treesize:233, output treesize:60 [2020-07-21 16:22:24,747 INFO L440 ElimStorePlain]: Different costs {2=[|#memory_$Pointer$.base|, |v_#memory_int_40|, |v_#memory_int_41|], 7=[|v_#memory_int_48|]} [2020-07-21 16:22:24,757 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:25,164 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 68 [2020-07-21 16:22:25,164 INFO L624 ElimStorePlain]: treesize reduction 112, result has 51.9 percent of original size [2020-07-21 16:22:25,176 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 16:22:25,218 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:25,228 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 16:22:25,270 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:25,273 INFO L544 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 16:22:25,293 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:25,295 INFO L544 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 4 dim-2 vars, End of recursive call: 12 dim-0 vars, and 1 xjuncts. [2020-07-21 16:22:25,295 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 13 variables, input treesize:331, output treesize:117 [2020-07-21 16:22:27,437 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:27,438 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 32 [2020-07-21 16:22:27,439 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:27,443 INFO L624 ElimStorePlain]: treesize reduction 140, result has 0.7 percent of original size [2020-07-21 16:22:27,446 INFO L512 ElimStorePlain]: Eliminatee |v_#memory_int_39| vanished before elimination [2020-07-21 16:22:27,446 INFO L544 ElimStorePlain]: Start of recursive call 1: 16 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:22:27,447 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 18 variables, input treesize:153, output treesize:1 [2020-07-21 16:22:27,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:22:27,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106031440] [2020-07-21 16:22:27,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 16:22:27,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-07-21 16:22:27,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724086758] [2020-07-21 16:22:27,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 16:22:27,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:22:27,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 16:22:27,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=83, Unknown=1, NotChecked=0, Total=110 [2020-07-21 16:22:27,462 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 11 states. [2020-07-21 16:22:30,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:22:30,217 INFO L93 Difference]: Finished difference Result 73 states and 79 transitions. [2020-07-21 16:22:30,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 16:22:30,221 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-07-21 16:22:30,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:22:30,222 INFO L225 Difference]: With dead ends: 73 [2020-07-21 16:22:30,222 INFO L226 Difference]: Without dead ends: 71 [2020-07-21 16:22:30,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=78, Invalid=193, Unknown=1, NotChecked=0, Total=272 [2020-07-21 16:22:30,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-07-21 16:22:30,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 39. [2020-07-21 16:22:30,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-21 16:22:30,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-07-21 16:22:30,233 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 25 [2020-07-21 16:22:30,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:22:30,237 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-07-21 16:22:30,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 16:22:30,237 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-07-21 16:22:30,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-21 16:22:30,238 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:22:30,238 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:22:30,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:30,440 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:22:30,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:22:30,441 INFO L82 PathProgramCache]: Analyzing trace with hash -377613816, now seen corresponding path program 1 times [2020-07-21 16:22:30,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:22:30,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598756037] [2020-07-21 16:22:30,443 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:30,554 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:22:30,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:22:30,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 47 conjunts are in the unsatisfiable core [2020-07-21 16:22:30,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:22:30,609 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-21 16:22:30,612 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2020-07-21 16:22:30,613 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:30,623 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:30,624 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 16:22:30,624 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:20 [2020-07-21 16:22:30,687 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:30,688 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-07-21 16:22:30,689 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:30,783 INFO L624 ElimStorePlain]: treesize reduction 14, result has 93.4 percent of original size [2020-07-21 16:22:30,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 16:22:30,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 16:22:30,795 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 16:22:30,813 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:30,814 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 63 treesize of output 41 [2020-07-21 16:22:30,815 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:30,878 INFO L624 ElimStorePlain]: treesize reduction 16, result has 89.2 percent of original size [2020-07-21 16:22:30,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 16:22:30,906 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:30,907 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 49 [2020-07-21 16:22:30,908 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:30,976 INFO L624 ElimStorePlain]: treesize reduction 24, result has 73.3 percent of original size [2020-07-21 16:22:30,978 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:22:30,978 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:200, output treesize:79 [2020-07-21 16:22:31,099 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:31,100 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 20 treesize of output 30 [2020-07-21 16:22:31,101 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:31,270 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-07-21 16:22:31,271 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:31,274 INFO L440 ElimStorePlain]: Different costs {6=[|v_#memory_$Pointer$.offset_37|, |v_#memory_$Pointer$.base_41|], 11=[|v_#memory_$Pointer$.base_39|, |v_#memory_$Pointer$.offset_35|]} [2020-07-21 16:22:31,313 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 39 [2020-07-21 16:22:31,314 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:31,462 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-07-21 16:22:31,463 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:31,500 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:31,501 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 406 treesize of output 318 [2020-07-21 16:22:31,505 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[13, 3, 2, 1] term [2020-07-21 16:22:31,506 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 13 disjuncts [2020-07-21 16:22:31,507 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:31,743 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-07-21 16:22:31,744 INFO L624 ElimStorePlain]: treesize reduction 48, result has 89.1 percent of original size [2020-07-21 16:22:32,007 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 63 [2020-07-21 16:22:32,008 INFO L350 Elim1Store]: treesize reduction 282, result has 32.9 percent of original size [2020-07-21 16:22:32,008 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 327 treesize of output 273 [2020-07-21 16:22:32,010 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 11 disjuncts [2020-07-21 16:22:32,011 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 11 disjuncts [2020-07-21 16:22:32,013 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 10 disjuncts [2020-07-21 16:22:32,013 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-07-21 16:22:32,014 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-07-21 16:22:32,015 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-07-21 16:22:32,019 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 11 disjuncts [2020-07-21 16:22:32,020 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 11 disjuncts [2020-07-21 16:22:32,021 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 10 disjuncts [2020-07-21 16:22:32,022 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-07-21 16:22:32,022 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-07-21 16:22:32,025 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-07-21 16:22:32,025 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-07-21 16:22:32,028 INFO L544 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 16:22:32,272 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 59 [2020-07-21 16:22:32,273 INFO L624 ElimStorePlain]: treesize reduction 94, result has 64.7 percent of original size [2020-07-21 16:22:32,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 16:22:32,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 16:22:32,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 16:22:32,338 INFO L350 Elim1Store]: treesize reduction 5, result has 90.7 percent of original size [2020-07-21 16:22:32,339 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 89 [2020-07-21 16:22:32,340 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:32,430 INFO L624 ElimStorePlain]: treesize reduction 41, result has 68.2 percent of original size [2020-07-21 16:22:32,432 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:22:32,432 INFO L244 ElimStorePlain]: Needed 6 recursive calls to eliminate 6 variables, input treesize:454, output treesize:126 [2020-07-21 16:22:32,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 16:22:32,608 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 19 [2020-07-21 16:22:32,608 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:32,628 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:32,630 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-07-21 16:22:32,630 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:88 [2020-07-21 16:22:32,715 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:32,715 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 95 [2020-07-21 16:22:32,717 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-07-21 16:22:32,718 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 16:22:32,719 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 16:22:32,719 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 16:22:32,722 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:32,737 INFO L624 ElimStorePlain]: treesize reduction 34, result has 20.9 percent of original size [2020-07-21 16:22:32,738 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:22:32,738 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:89, output treesize:4 [2020-07-21 16:22:32,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:22:32,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:22:32,891 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 16:22:32,896 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 16:22:32,899 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 16:22:32,908 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.offset_38|], 6=[|v_#memory_$Pointer$.base_42|], 20=[|v_#memory_$Pointer$.base_39|, |v_#memory_$Pointer$.offset_35|]} [2020-07-21 16:22:32,926 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 16:22:32,939 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 16:22:33,291 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-07-21 16:22:33,292 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:33,308 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 16:22:33,319 INFO L544 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 16:22:33,575 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-07-21 16:22:33,575 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:33,587 INFO L544 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 16:22:33,595 INFO L544 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 16:22:33,868 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-07-21 16:22:33,868 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:33,881 INFO L544 ElimStorePlain]: Start of recursive call 8: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 16:22:33,896 INFO L544 ElimStorePlain]: Start of recursive call 9: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 16:22:34,216 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-07-21 16:22:34,217 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:34,221 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 4 dim-2 vars, End of recursive call: 10 dim-0 vars, and 2 xjuncts. [2020-07-21 16:22:34,221 INFO L244 ElimStorePlain]: Needed 9 recursive calls to eliminate 5 variables, input treesize:1145, output treesize:1527 [2020-07-21 16:22:35,429 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-07-21 16:22:35,440 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 16:22:35,461 INFO L440 ElimStorePlain]: Different costs {36=[|#memory_$Pointer$.offset|], 66=[|#memory_$Pointer$.base|]} [2020-07-21 16:22:35,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 16:22:35,593 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 16:22:35,594 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 16:22:39,844 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 43711996984108 treesize of output 43711728548652