/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 DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 21:55:32,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 21:55:32,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 21:55:32,752 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 21:55:32,752 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 21:55:32,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 21:55:32,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 21:55:32,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 21:55:32,772 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 21:55:32,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 21:55:32,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 21:55:32,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 21:55:32,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 21:55:32,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 21:55:32,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 21:55:32,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 21:55:32,783 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 21:55:32,784 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 21:55:32,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 21:55:32,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 21:55:32,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 21:55:32,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 21:55:32,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 21:55:32,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 21:55:32,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 21:55:32,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 21:55:32,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 21:55:32,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 21:55:32,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 21:55:32,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 21:55:32,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 21:55:32,810 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 21:55:32,811 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 21:55:32,812 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 21:55:32,813 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 21:55:32,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 21:55:32,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 21:55:32,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 21:55:32,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 21:55:32,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 21:55:32,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 21:55:32,817 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 21:55:32,852 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 21:55:32,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 21:55:32,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 21:55:32,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 21:55:32,857 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 21:55:32,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 21:55:32,858 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 21:55:32,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 21:55:32,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 21:55:32,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 21:55:32,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 21:55:32,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 21:55:32,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 21:55:32,859 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 21:55:32,860 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 21:55:32,860 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 21:55:32,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 21:55:32,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 21:55:32,861 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 21:55:32,861 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 21:55:32,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 21:55:32,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 21:55:32,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 21:55:32,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 21:55:32,862 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 21:55:32,863 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 21:55:32,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:55:32,863 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 21:55:32,863 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 21:55:32,863 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 -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 21:55:33,167 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 21:55:33,183 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 21:55:33,188 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 21:55:33,189 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 21:55:33,190 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 21:55:33,192 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-07-20 21:55:33,266 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8cd4784b/af62bfbb17f94808b31d548db89895c7/FLAG639d3bc35 [2020-07-20 21:55:33,736 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 21:55:33,737 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-07-20 21:55:33,763 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8cd4784b/af62bfbb17f94808b31d548db89895c7/FLAG639d3bc35 [2020-07-20 21:55:34,096 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8cd4784b/af62bfbb17f94808b31d548db89895c7 [2020-07-20 21:55:34,104 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 21:55:34,107 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 21:55:34,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 21:55:34,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 21:55:34,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 21:55:34,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:55:34" (1/1) ... [2020-07-20 21:55:34,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dcaa2e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:55:34, skipping insertion in model container [2020-07-20 21:55:34,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:55:34" (1/1) ... [2020-07-20 21:55:34,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 21:55:34,167 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 21:55:34,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:55:34,565 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 21:55:34,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:55:34,665 INFO L208 MainTranslator]: Completed translation [2020-07-20 21:55:34,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:55:34 WrapperNode [2020-07-20 21:55:34,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 21:55:34,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 21:55:34,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 21:55:34,667 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 21:55:34,681 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:55:34" (1/1) ... [2020-07-20 21:55:34,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:55:34" (1/1) ... [2020-07-20 21:55:34,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:55:34" (1/1) ... [2020-07-20 21:55:34,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:55:34" (1/1) ... [2020-07-20 21:55:34,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:55:34" (1/1) ... [2020-07-20 21:55:34,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:55:34" (1/1) ... [2020-07-20 21:55:34,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:55:34" (1/1) ... [2020-07-20 21:55:34,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 21:55:34,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 21:55:34,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 21:55:34,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 21:55:34,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:55:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 21:55:34,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 21:55:34,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 21:55:34,810 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 21:55:34,811 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-20 21:55:34,811 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-20 21:55:34,811 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-20 21:55:34,812 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-20 21:55:34,812 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-20 21:55:34,812 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-20 21:55:34,812 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-20 21:55:34,813 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-20 21:55:34,813 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-20 21:55:34,813 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-20 21:55:34,814 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-20 21:55:34,814 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-20 21:55:34,815 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-20 21:55:34,815 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-20 21:55:34,815 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-20 21:55:34,815 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-20 21:55:34,815 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-20 21:55:34,815 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-20 21:55:34,816 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-20 21:55:34,816 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-20 21:55:34,816 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-20 21:55:34,816 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-20 21:55:34,817 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-20 21:55:34,817 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-20 21:55:34,817 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-20 21:55:34,818 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-20 21:55:34,818 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-20 21:55:34,818 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-20 21:55:34,818 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-20 21:55:34,818 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-20 21:55:34,818 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-20 21:55:34,819 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-20 21:55:34,819 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-20 21:55:34,819 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-20 21:55:34,819 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-20 21:55:34,819 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-20 21:55:34,819 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-20 21:55:34,819 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-20 21:55:34,820 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-20 21:55:34,820 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-20 21:55:34,820 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-20 21:55:34,820 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-20 21:55:34,820 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-20 21:55:34,820 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-20 21:55:34,822 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-20 21:55:34,822 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-20 21:55:34,823 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-20 21:55:34,823 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-20 21:55:34,823 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-20 21:55:34,823 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-20 21:55:34,823 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 21:55:34,824 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-20 21:55:34,824 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-20 21:55:34,824 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 21:55:34,824 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-20 21:55:34,825 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-20 21:55:34,826 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-20 21:55:34,826 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-20 21:55:34,826 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-20 21:55:34,826 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 21:55:34,826 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-20 21:55:34,826 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-20 21:55:34,826 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-20 21:55:34,827 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 21:55:34,827 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-20 21:55:34,828 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-20 21:55:34,828 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-20 21:55:34,828 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-20 21:55:34,828 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-20 21:55:34,829 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-20 21:55:34,829 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-20 21:55:34,829 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-20 21:55:34,830 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-20 21:55:34,830 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-20 21:55:34,830 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-20 21:55:34,830 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-20 21:55:34,830 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-20 21:55:34,830 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-20 21:55:34,831 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-20 21:55:34,831 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-20 21:55:34,831 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-20 21:55:34,831 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-20 21:55:34,831 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-20 21:55:34,831 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-20 21:55:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-20 21:55:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-20 21:55:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-20 21:55:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-20 21:55:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-20 21:55:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-20 21:55:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-20 21:55:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-20 21:55:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-20 21:55:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-20 21:55:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-20 21:55:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-20 21:55:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-20 21:55:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-20 21:55:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-20 21:55:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-20 21:55:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-20 21:55:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-20 21:55:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-20 21:55:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 21:55:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 21:55:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 21:55:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 21:55:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 21:55:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 21:55:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 21:55:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 21:55:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 21:55:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 21:55:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 21:55:35,372 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 21:55:35,373 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-07-20 21:55:35,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:55:35 BoogieIcfgContainer [2020-07-20 21:55:35,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 21:55:35,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 21:55:35,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 21:55:35,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 21:55:35,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 09:55:34" (1/3) ... [2020-07-20 21:55:35,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf30302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:55:35, skipping insertion in model container [2020-07-20 21:55:35,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:55:34" (2/3) ... [2020-07-20 21:55:35,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf30302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:55:35, skipping insertion in model container [2020-07-20 21:55:35,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:55:35" (3/3) ... [2020-07-20 21:55:35,385 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2020-07-20 21:55:35,395 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 21:55:35,402 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-07-20 21:55:35,414 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-07-20 21:55:35,435 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 21:55:35,435 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 21:55:35,435 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 21:55:35,436 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 21:55:35,436 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 21:55:35,436 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 21:55:35,436 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 21:55:35,436 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 21:55:35,455 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-07-20 21:55:35,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-20 21:55:35,460 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:55:35,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:55:35,462 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:55:35,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:55:35,468 INFO L82 PathProgramCache]: Analyzing trace with hash -742552803, now seen corresponding path program 1 times [2020-07-20 21:55:35,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:55:35,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078000888] [2020-07-20 21:55:35,478 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:55:35,716 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 21:55:35,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:55:35,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 21:55:35,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:55:35,810 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-07-20 21:55:35,816 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:35,824 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:35,824 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:55:35,825 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:8, output treesize:4 [2020-07-20 21:55:35,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:55:35,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:55:35,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078000888] [2020-07-20 21:55:35,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:55:35,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 21:55:35,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950747934] [2020-07-20 21:55:35,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 21:55:35,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:55:35,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 21:55:35,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 21:55:35,871 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 4 states. [2020-07-20 21:55:35,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:55:35,996 INFO L93 Difference]: Finished difference Result 73 states and 118 transitions. [2020-07-20 21:55:35,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 21:55:35,998 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-07-20 21:55:35,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:55:36,011 INFO L225 Difference]: With dead ends: 73 [2020-07-20 21:55:36,011 INFO L226 Difference]: Without dead ends: 35 [2020-07-20 21:55:36,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 21:55:36,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-20 21:55:36,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2020-07-20 21:55:36,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-20 21:55:36,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-07-20 21:55:36,087 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 10 [2020-07-20 21:55:36,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:55:36,088 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-07-20 21:55:36,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 21:55:36,088 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-07-20 21:55:36,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-20 21:55:36,089 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:55:36,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:55:36,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:55:36,306 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:55:36,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:55:36,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1973625457, now seen corresponding path program 1 times [2020-07-20 21:55:36,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:55:36,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089594381] [2020-07-20 21:55:36,307 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:55:36,421 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 21:55:36,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:55:36,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 21:55:36,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:55:36,441 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-20 21:55:36,441 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:36,444 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:36,444 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:55:36,444 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-07-20 21:55:36,467 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-07-20 21:55:36,468 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:36,470 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:36,470 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:55:36,471 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-20 21:55:36,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:55:36,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:55:36,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089594381] [2020-07-20 21:55:36,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:55:36,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 21:55:36,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289386419] [2020-07-20 21:55:36,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 21:55:36,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:55:36,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 21:55:36,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 21:55:36,482 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 5 states. [2020-07-20 21:55:36,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:55:36,572 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-07-20 21:55:36,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 21:55:36,573 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-20 21:55:36,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:55:36,574 INFO L225 Difference]: With dead ends: 54 [2020-07-20 21:55:36,574 INFO L226 Difference]: Without dead ends: 52 [2020-07-20 21:55:36,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 21:55:36,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-07-20 21:55:36,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 36. [2020-07-20 21:55:36,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-20 21:55:36,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-07-20 21:55:36,584 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 14 [2020-07-20 21:55:36,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:55:36,584 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-07-20 21:55:36,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 21:55:36,584 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-07-20 21:55:36,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 21:55:36,585 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:55:36,585 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:55:36,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:55:36,800 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:55:36,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:55:36,801 INFO L82 PathProgramCache]: Analyzing trace with hash -954667545, now seen corresponding path program 1 times [2020-07-20 21:55:36,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:55:36,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266044372] [2020-07-20 21:55:36,802 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:55:37,123 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 21:55:37,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:55:37,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 32 conjunts are in the unsatisfiable core [2020-07-20 21:55:37,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:55:37,156 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-20 21:55:37,157 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2020-07-20 21:55:37,158 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:37,173 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:37,180 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-20 21:55:37,181 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:37,196 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:37,197 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 21:55:37,197 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:29 [2020-07-20 21:55:37,260 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:37,261 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-07-20 21:55:37,263 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:37,315 INFO L624 ElimStorePlain]: treesize reduction 14, result has 81.1 percent of original size [2020-07-20 21:55:37,322 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 21:55:37,346 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:37,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 21:55:37,372 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 20 [2020-07-20 21:55:37,373 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:37,388 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:37,390 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:55:37,390 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:62, output treesize:27 [2020-07-20 21:55:37,456 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:37,457 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2020-07-20 21:55:37,459 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:37,495 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:37,497 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_30|, |v_#memory_int_31|], 4=[|v_#memory_int_33|]} [2020-07-20 21:55:37,501 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 21:55:37,526 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:37,529 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 21:55:37,548 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:37,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 21:55:37,573 INFO L350 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2020-07-20 21:55:37,574 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 45 [2020-07-20 21:55:37,575 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:37,594 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:37,599 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-07-20 21:55:37,599 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:80, output treesize:43 [2020-07-20 21:55:37,685 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 33 treesize of output 13 [2020-07-20 21:55:37,686 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:37,693 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:37,694 INFO L544 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:55:37,694 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:45, output treesize:3 [2020-07-20 21:55:37,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:55:37,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:55:37,752 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_31|], 3=[|v_#memory_int_30|]} [2020-07-20 21:55:37,755 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 21:55:37,770 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:37,774 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 21:55:37,783 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:37,785 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-07-20 21:55:37,785 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:63, output treesize:55 [2020-07-20 21:55:37,838 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_29|], 6=[|v_#memory_int_35|]} [2020-07-20 21:55:37,844 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 21:55:37,873 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:37,876 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 21:55:37,896 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:37,899 INFO L544 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-2 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2020-07-20 21:55:37,899 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:96, output treesize:102 [2020-07-20 21:55:40,039 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:40,040 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 32 [2020-07-20 21:55:40,041 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:40,043 INFO L624 ElimStorePlain]: treesize reduction 114, result has 0.9 percent of original size [2020-07-20 21:55:40,045 INFO L512 ElimStorePlain]: Eliminatee |v_#memory_int_28| vanished before elimination [2020-07-20 21:55:40,045 INFO L544 ElimStorePlain]: Start of recursive call 1: 11 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:55:40,046 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 13 variables, input treesize:127, output treesize:1 [2020-07-20 21:55:40,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:55:40,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266044372] [2020-07-20 21:55:40,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:55:40,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-07-20 21:55:40,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855140557] [2020-07-20 21:55:40,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 21:55:40,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:55:40,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 21:55:40,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=83, Unknown=1, NotChecked=0, Total=110 [2020-07-20 21:55:40,055 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 11 states. [2020-07-20 21:55:42,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:55:42,687 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2020-07-20 21:55:42,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 21:55:42,687 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2020-07-20 21:55:42,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:55:42,689 INFO L225 Difference]: With dead ends: 62 [2020-07-20 21:55:42,689 INFO L226 Difference]: Without dead ends: 60 [2020-07-20 21:55:42,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=78, Invalid=193, Unknown=1, NotChecked=0, Total=272 [2020-07-20 21:55:42,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-20 21:55:42,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 27. [2020-07-20 21:55:42,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-20 21:55:42,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-07-20 21:55:42,697 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2020-07-20 21:55:42,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:55:42,697 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-07-20 21:55:42,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 21:55:42,697 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-07-20 21:55:42,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-20 21:55:42,698 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:55:42,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:55:42,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:55:42,914 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:55:42,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:55:42,915 INFO L82 PathProgramCache]: Analyzing trace with hash 903516662, now seen corresponding path program 1 times [2020-07-20 21:55:42,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:55:42,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511441945] [2020-07-20 21:55:42,916 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:55:43,006 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 21:55:43,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:55:43,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 21:55:43,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:55:43,018 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-20 21:55:43,019 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:43,022 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:43,022 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:55:43,023 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-07-20 21:55:43,034 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-07-20 21:55:43,035 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:43,037 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:43,037 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:55:43,037 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-20 21:55:43,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:55:43,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:55:43,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511441945] [2020-07-20 21:55:43,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:55:43,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 21:55:43,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519310696] [2020-07-20 21:55:43,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 21:55:43,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:55:43,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 21:55:43,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 21:55:43,048 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 5 states. [2020-07-20 21:55:43,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:55:43,129 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-07-20 21:55:43,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 21:55:43,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-07-20 21:55:43,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:55:43,131 INFO L225 Difference]: With dead ends: 62 [2020-07-20 21:55:43,131 INFO L226 Difference]: Without dead ends: 50 [2020-07-20 21:55:43,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 21:55:43,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-07-20 21:55:43,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 37. [2020-07-20 21:55:43,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-20 21:55:43,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-07-20 21:55:43,140 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 18 [2020-07-20 21:55:43,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:55:43,140 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-07-20 21:55:43,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 21:55:43,140 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-07-20 21:55:43,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 21:55:43,141 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:55:43,141 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:55:43,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:55:43,356 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:55:43,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:55:43,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1223911862, now seen corresponding path program 1 times [2020-07-20 21:55:43,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:55:43,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726795] [2020-07-20 21:55:43,358 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:55:43,467 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 21:55:43,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:55:43,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 21:55:43,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:55:43,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 21:55:43,549 INFO L350 Elim1Store]: treesize reduction 33, result has 55.4 percent of original size [2020-07-20 21:55:43,550 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 48 [2020-07-20 21:55:43,551 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:43,608 INFO L624 ElimStorePlain]: treesize reduction 16, result has 81.4 percent of original size [2020-07-20 21:55:43,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 21:55:43,673 INFO L350 Elim1Store]: treesize reduction 33, result has 55.4 percent of original size [2020-07-20 21:55:43,674 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 48 [2020-07-20 21:55:43,675 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:43,741 INFO L624 ElimStorePlain]: treesize reduction 16, result has 79.7 percent of original size [2020-07-20 21:55:43,742 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:55:43,742 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:77, output treesize:63 [2020-07-20 21:55:43,817 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-20 21:55:43,821 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-20 21:55:43,830 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-07-20 21:55:43,831 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:43,835 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-20 21:55:43,836 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:43,866 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:43,867 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2020-07-20 21:55:43,868 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:43,926 INFO L624 ElimStorePlain]: treesize reduction 12, result has 84.6 percent of original size [2020-07-20 21:55:43,937 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-20 21:55:43,938 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:43,942 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-07-20 21:55:43,942 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:43,950 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:43,951 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2020-07-20 21:55:43,952 INFO L544 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:43,964 INFO L624 ElimStorePlain]: treesize reduction 20, result has 25.9 percent of original size [2020-07-20 21:55:43,964 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:55:43,965 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 4 variables, input treesize:110, output treesize:7 [2020-07-20 21:55:43,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:55:43,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:55:44,012 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:55:44,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:55:44,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726795] [2020-07-20 21:55:44,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:55:44,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-20 21:55:44,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298784585] [2020-07-20 21:55:44,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 21:55:44,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:55:44,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 21:55:44,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 21:55:44,024 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 7 states. [2020-07-20 21:55:44,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:55:44,243 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-07-20 21:55:44,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 21:55:44,244 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-07-20 21:55:44,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:55:44,245 INFO L225 Difference]: With dead ends: 51 [2020-07-20 21:55:44,245 INFO L226 Difference]: Without dead ends: 29 [2020-07-20 21:55:44,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-07-20 21:55:44,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-20 21:55:44,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-07-20 21:55:44,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-20 21:55:44,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-07-20 21:55:44,251 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 21 [2020-07-20 21:55:44,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:55:44,251 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-07-20 21:55:44,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 21:55:44,251 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-07-20 21:55:44,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 21:55:44,252 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:55:44,252 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:55:44,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:55:44,455 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:55:44,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:55:44,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1696156082, now seen corresponding path program 1 times [2020-07-20 21:55:44,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:55:44,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312382341] [2020-07-20 21:55:44,457 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:55:44,641 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 21:55:44,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:55:44,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 27 conjunts are in the unsatisfiable core [2020-07-20 21:55:44,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:55:44,669 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-20 21:55:44,669 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2020-07-20 21:55:44,670 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:44,678 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:44,682 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-20 21:55:44,682 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:44,690 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:44,691 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 21:55:44,691 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:26 [2020-07-20 21:55:44,742 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:44,743 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-07-20 21:55:44,744 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:44,786 INFO L624 ElimStorePlain]: treesize reduction 14, result has 80.3 percent of original size [2020-07-20 21:55:44,790 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 21:55:44,805 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:44,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 21:55:44,814 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 20 [2020-07-20 21:55:44,815 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:44,827 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:44,828 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:55:44,828 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:59, output treesize:24 [2020-07-20 21:55:44,877 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:44,878 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2020-07-20 21:55:44,878 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:44,908 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:44,910 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_41|, |v_#memory_int_42|], 4=[|v_#memory_int_44|]} [2020-07-20 21:55:44,914 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 21:55:44,934 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:44,938 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 21:55:44,951 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:44,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 21:55:44,972 INFO L350 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2020-07-20 21:55:44,972 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 45 [2020-07-20 21:55:44,973 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:44,989 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:44,994 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-07-20 21:55:44,994 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:77, output treesize:40 [2020-07-20 21:55:45,085 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13 [2020-07-20 21:55:45,086 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:45,093 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:45,094 INFO L544 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:55:45,094 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:49, output treesize:3 [2020-07-20 21:55:45,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:55:45,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:55:45,155 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_42|], 3=[|v_#memory_int_41|]} [2020-07-20 21:55:45,158 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 21:55:45,197 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:45,201 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 21:55:45,210 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:45,212 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-07-20 21:55:45,212 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:65, output treesize:57 [2020-07-20 21:55:45,250 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_40|], 6=[|v_#memory_int_46|]} [2020-07-20 21:55:45,254 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 21:55:45,275 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:45,278 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 21:55:45,291 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:45,293 INFO L544 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-2 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2020-07-20 21:55:45,293 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:98, output treesize:104 [2020-07-20 21:55:47,436 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:47,437 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 32 [2020-07-20 21:55:47,437 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:47,442 INFO L624 ElimStorePlain]: treesize reduction 127, result has 0.8 percent of original size [2020-07-20 21:55:47,443 INFO L512 ElimStorePlain]: Eliminatee |v_#memory_int_39| vanished before elimination [2020-07-20 21:55:47,443 INFO L544 ElimStorePlain]: Start of recursive call 1: 12 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:55:47,443 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 14 variables, input treesize:140, output treesize:1 [2020-07-20 21:55:47,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:55:47,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312382341] [2020-07-20 21:55:47,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:55:47,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-07-20 21:55:47,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633977421] [2020-07-20 21:55:47,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 21:55:47,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:55:47,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 21:55:47,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=83, Unknown=1, NotChecked=0, Total=110 [2020-07-20 21:55:47,452 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 11 states. [2020-07-20 21:55:55,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:55:55,919 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2020-07-20 21:55:55,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 21:55:55,920 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-07-20 21:55:55,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:55:55,921 INFO L225 Difference]: With dead ends: 67 [2020-07-20 21:55:55,921 INFO L226 Difference]: Without dead ends: 55 [2020-07-20 21:55:55,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=70, Invalid=169, Unknown=1, NotChecked=0, Total=240 [2020-07-20 21:55:55,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-07-20 21:55:55,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 31. [2020-07-20 21:55:55,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-20 21:55:55,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-07-20 21:55:55,928 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 21 [2020-07-20 21:55:55,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:55:55,928 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-07-20 21:55:55,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 21:55:55,928 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-07-20 21:55:55,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 21:55:55,929 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:55:55,929 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:55:56,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:55:56,143 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:55:56,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:55:56,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1223476830, now seen corresponding path program 1 times [2020-07-20 21:55:56,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:55:56,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833085435] [2020-07-20 21:55:56,144 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:55:56,413 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:55:56,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:55:56,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 40 conjunts are in the unsatisfiable core [2020-07-20 21:55:56,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:55:56,437 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-20 21:55:56,438 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2020-07-20 21:55:56,438 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:56,446 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:56,446 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:55:56,447 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:21 [2020-07-20 21:55:56,494 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:56,495 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 69 [2020-07-20 21:55:56,496 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:56,555 INFO L624 ElimStorePlain]: treesize reduction 28, result has 74.5 percent of original size [2020-07-20 21:55:56,561 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-07-20 21:55:56,562 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:56,581 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:56,587 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-07-20 21:55:56,587 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:56,608 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:56,609 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:55:56,609 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:80, output treesize:56 [2020-07-20 21:55:56,722 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:56,722 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 41 [2020-07-20 21:55:56,723 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:56,779 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:56,850 INFO L350 Elim1Store]: treesize reduction 66, result has 49.6 percent of original size [2020-07-20 21:55:56,851 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 254 treesize of output 233 [2020-07-20 21:55:56,853 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[9, 3, 2, 1] term [2020-07-20 21:55:56,853 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-07-20 21:55:56,854 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:56,955 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-07-20 21:55:56,956 INFO L624 ElimStorePlain]: treesize reduction 40, result has 85.0 percent of original size [2020-07-20 21:55:56,959 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 21:55:56,992 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:57,027 INFO L350 Elim1Store]: treesize reduction 26, result has 60.0 percent of original size [2020-07-20 21:55:57,028 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 170 treesize of output 130 [2020-07-20 21:55:57,029 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:57,090 INFO L624 ElimStorePlain]: treesize reduction 46, result has 76.0 percent of original size [2020-07-20 21:55:57,196 INFO L350 Elim1Store]: treesize reduction 95, result has 51.0 percent of original size [2020-07-20 21:55:57,197 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 134 treesize of output 141 [2020-07-20 21:55:57,199 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[9, 3, 2, 1] term [2020-07-20 21:55:57,199 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-07-20 21:55:57,200 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:57,254 INFO L624 ElimStorePlain]: treesize reduction 81, result has 52.9 percent of original size [2020-07-20 21:55:57,256 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 4 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 21:55:57,256 INFO L244 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:274, output treesize:92 [2020-07-20 21:55:57,323 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 59 [2020-07-20 21:55:57,324 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:57,338 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:57,340 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-07-20 21:55:57,341 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:106, output treesize:83 [2020-07-20 21:55:57,391 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:57,392 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 69 [2020-07-20 21:55:57,393 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-07-20 21:55:57,394 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-07-20 21:55:57,394 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-07-20 21:55:57,395 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:55:57,410 INFO L624 ElimStorePlain]: treesize reduction 9, result has 59.1 percent of original size [2020-07-20 21:55:57,410 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:55:57,411 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:87, output treesize:4 [2020-07-20 21:55:57,427 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:55:57,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:55:57,483 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.offset_35|], 6=[|v_#memory_$Pointer$.base_35|, |v_#memory_$Pointer$.offset_32|, |v_#memory_$Pointer$.base_32|]} [2020-07-20 21:55:57,488 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 21:55:57,530 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:57,536 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 21:55:57,568 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:57,571 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 21:55:57,591 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:57,593 INFO L544 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 21:55:57,609 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:55:57,610 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 4 dim-2 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2020-07-20 21:55:57,611 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 7 variables, input treesize:141, output treesize:140 [2020-07-20 21:55:57,686 INFO L440 ElimStorePlain]: Different costs {6=[|#memory_$Pointer$.offset|], 14=[|#memory_$Pointer$.base|]} [2020-07-20 21:55:57,718 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 12235058 treesize of output 12230962 [2020-07-20 21:55:58,773 INFO L544 ElimStorePlain]: Start of recursive call 2: 1024 dim-0 vars, End of recursive call: 1024 dim-0 vars, and 2 xjuncts. [2020-07-20 21:56:39,262 WARN L193 SmtUtils]: Spent 40.47 s on a formula simplification. DAG size of input: 11909 DAG size of output: 109 [2020-07-20 21:56:39,263 INFO L624 ElimStorePlain]: treesize reduction 12228944, result has 0.0 percent of original size [2020-07-20 21:56:39,286 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 21:56:39,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 21:56:39,288 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 21:56:39,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 21:56:39,295 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 22246 treesize of output 22182 [2020-07-20 21:56:39,310 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2020-07-20 21:56:39,329 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 21:56:39,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 21:56:39,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 21:56:39,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 21:56:39,354 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 21:56:39,365 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 120 treesize of output 116 [2020-07-20 21:56:39,366 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2020-07-20 21:56:39,381 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 21:56:39,382 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 21:56:39,383 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 21:56:39,384 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 21:56:39,384 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 21:56:39,385 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 21:56:39,394 WARN L234 Elim1Store]: Array PQE input equivalent to true [2020-07-20 21:56:39,395 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-20 21:56:39,511 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2020-07-20 21:56:39,511 INFO L624 ElimStorePlain]: treesize reduction 72, result has 40.0 percent of original size [2020-07-20 21:56:39,519 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 21:56:39,520 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 21:56:39,521 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 21:56:39,522 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 21:56:39,523 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 21:56:39,523 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 21:56:39,537 WARN L234 Elim1Store]: Array PQE input equivalent to true [2020-07-20 21:56:39,538 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-07-20 21:56:39,569 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:56:39,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 21:56:39,615 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 21:56:39,616 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 21:56:39,617 INFO L544 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-07-20 21:56:39,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 21:56:39,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 21:56:39,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 21:56:39,659 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 21:56:39,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 21:56:39,662 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 21:56:39,682 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 91730 treesize of output 91474 [2020-07-20 21:56:39,722 INFO L544 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 2 xjuncts. [2020-07-20 21:56:41,236 WARN L193 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 298 DAG size of output: 70 [2020-07-20 21:56:41,237 INFO L624 ElimStorePlain]: treesize reduction 90916, result has 0.2 percent of original size [2020-07-20 21:56:42,418 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 21:56:43,015 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-07-20 21:56:43,015 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:56:43,092 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 20 case distinctions, treesize of input 1171946215753 treesize of output 1167546915328