/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 17:16:45,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 17:16:45,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 17:16:45,782 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 17:16:45,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 17:16:45,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 17:16:45,785 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 17:16:45,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 17:16:45,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 17:16:45,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 17:16:45,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 17:16:45,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 17:16:45,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 17:16:45,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 17:16:45,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 17:16:45,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 17:16:45,796 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 17:16:45,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 17:16:45,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 17:16:45,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 17:16:45,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 17:16:45,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 17:16:45,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 17:16:45,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 17:16:45,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 17:16:45,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 17:16:45,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 17:16:45,810 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 17:16:45,810 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 17:16:45,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 17:16:45,811 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 17:16:45,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 17:16:45,814 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 17:16:45,815 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 17:16:45,816 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 17:16:45,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 17:16:45,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 17:16:45,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 17:16:45,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 17:16:45,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 17:16:45,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 17:16:45,825 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 17:16:45,852 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 17:16:45,852 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 17:16:45,854 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 17:16:45,854 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 17:16:45,854 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 17:16:45,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 17:16:45,855 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 17:16:45,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 17:16:45,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 17:16:45,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 17:16:45,856 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 17:16:45,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 17:16:45,857 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 17:16:45,857 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 17:16:45,857 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 17:16:45,857 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 17:16:45,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 17:16:45,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 17:16:45,858 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 17:16:45,858 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 17:16:45,859 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 17:16:45,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 17:16:45,859 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 17:16:45,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 17:16:45,859 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 17:16:45,860 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 17:16:45,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:16:45,860 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 17:16:45,860 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 17:16:45,860 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 17:16:46,163 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 17:16:46,176 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 17:16:46,180 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 17:16:46,182 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 17:16:46,182 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 17:16:46,183 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-07-20 17:16:46,247 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/255a4d29e/c79cc31f7db741439755fb5565c3fac2/FLAG3f57c867e [2020-07-20 17:16:46,764 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 17:16:46,765 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-07-20 17:16:46,778 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/255a4d29e/c79cc31f7db741439755fb5565c3fac2/FLAG3f57c867e [2020-07-20 17:16:47,115 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/255a4d29e/c79cc31f7db741439755fb5565c3fac2 [2020-07-20 17:16:47,126 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 17:16:47,129 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 17:16:47,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 17:16:47,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 17:16:47,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 17:16:47,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:16:47" (1/1) ... [2020-07-20 17:16:47,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2059f81e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:16:47, skipping insertion in model container [2020-07-20 17:16:47,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:16:47" (1/1) ... [2020-07-20 17:16:47,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 17:16:47,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 17:16:47,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 17:16:47,626 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 17:16:47,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 17:16:47,740 INFO L208 MainTranslator]: Completed translation [2020-07-20 17:16:47,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:16:47 WrapperNode [2020-07-20 17:16:47,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 17:16:47,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 17:16:47,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 17:16:47,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 17:16:47,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:16:47" (1/1) ... [2020-07-20 17:16:47,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:16:47" (1/1) ... [2020-07-20 17:16:47,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:16:47" (1/1) ... [2020-07-20 17:16:47,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:16:47" (1/1) ... [2020-07-20 17:16:47,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:16:47" (1/1) ... [2020-07-20 17:16:47,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:16:47" (1/1) ... [2020-07-20 17:16:47,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:16:47" (1/1) ... [2020-07-20 17:16:47,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 17:16:47,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 17:16:47,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 17:16:47,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 17:16:47,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:16:47" (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 17:16:47,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 17:16:47,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 17:16:47,881 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 17:16:47,881 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-20 17:16:47,881 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-20 17:16:47,882 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-20 17:16:47,882 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-20 17:16:47,882 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-20 17:16:47,882 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-20 17:16:47,882 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-20 17:16:47,882 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-20 17:16:47,883 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-20 17:16:47,883 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-20 17:16:47,883 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-20 17:16:47,883 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-20 17:16:47,883 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-20 17:16:47,883 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-20 17:16:47,884 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-20 17:16:47,884 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-20 17:16:47,884 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-20 17:16:47,884 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-20 17:16:47,884 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-20 17:16:47,884 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-20 17:16:47,885 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-20 17:16:47,885 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-20 17:16:47,885 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-20 17:16:47,885 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-20 17:16:47,885 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-20 17:16:47,885 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-20 17:16:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-20 17:16:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-20 17:16:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-20 17:16:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-20 17:16:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-20 17:16:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-20 17:16:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-20 17:16:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-20 17:16:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-20 17:16:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-20 17:16:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-20 17:16:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-20 17:16:47,888 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-20 17:16:47,888 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-20 17:16:47,888 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-20 17:16:47,888 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-20 17:16:47,888 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-20 17:16:47,888 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-20 17:16:47,888 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-20 17:16:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-20 17:16:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-20 17:16:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-20 17:16:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-20 17:16:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-20 17:16:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 17:16:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-20 17:16:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-20 17:16:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 17:16:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-20 17:16:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-20 17:16:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-20 17:16:47,891 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-20 17:16:47,891 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-20 17:16:47,891 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 17:16:47,891 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-20 17:16:47,891 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-20 17:16:47,891 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-20 17:16:47,892 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 17:16:47,892 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-20 17:16:47,892 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-20 17:16:47,892 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-20 17:16:47,892 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-20 17:16:47,892 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-20 17:16:47,892 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-20 17:16:47,893 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-20 17:16:47,893 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-20 17:16:47,893 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-20 17:16:47,893 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-20 17:16:47,893 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-20 17:16:47,893 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-20 17:16:47,894 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-20 17:16:47,894 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-20 17:16:47,894 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-20 17:16:47,894 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-20 17:16:47,894 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-20 17:16:47,894 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-20 17:16:47,895 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-20 17:16:47,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-20 17:16:47,895 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-20 17:16:47,895 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-20 17:16:47,895 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-20 17:16:47,895 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-20 17:16:47,895 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-20 17:16:47,896 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-20 17:16:47,896 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-20 17:16:47,896 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-20 17:16:47,896 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-20 17:16:47,896 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-20 17:16:47,896 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-20 17:16:47,896 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-20 17:16:47,896 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-20 17:16:47,897 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-20 17:16:47,897 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-20 17:16:47,897 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-20 17:16:47,897 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-20 17:16:47,897 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-20 17:16:47,897 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-20 17:16:47,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 17:16:47,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 17:16:47,898 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 17:16:47,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 17:16:47,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 17:16:47,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 17:16:47,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 17:16:47,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 17:16:47,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 17:16:47,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 17:16:47,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 17:16:48,614 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 17:16:48,614 INFO L295 CfgBuilder]: Removed 17 assume(true) statements. [2020-07-20 17:16:48,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:16:48 BoogieIcfgContainer [2020-07-20 17:16:48,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 17:16:48,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 17:16:48,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 17:16:48,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 17:16:48,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:16:47" (1/3) ... [2020-07-20 17:16:48,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2795ca1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:16:48, skipping insertion in model container [2020-07-20 17:16:48,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:16:47" (2/3) ... [2020-07-20 17:16:48,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2795ca1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:16:48, skipping insertion in model container [2020-07-20 17:16:48,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:16:48" (3/3) ... [2020-07-20 17:16:48,629 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2020-07-20 17:16:48,640 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 17:16:48,649 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-07-20 17:16:48,664 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-07-20 17:16:48,691 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 17:16:48,691 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 17:16:48,691 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 17:16:48,692 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 17:16:48,692 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 17:16:48,692 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 17:16:48,692 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 17:16:48,693 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 17:16:48,715 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-07-20 17:16:48,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-20 17:16:48,723 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:16:48,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:16:48,725 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:16:48,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:16:48,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1255802584, now seen corresponding path program 1 times [2020-07-20 17:16:48,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:16:48,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925820685] [2020-07-20 17:16:48,743 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 17:16:48,946 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 17:16:48,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:16:48,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 17:16:48,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:16:49,034 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 17:16:49,037 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 17:16:49,047 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:49,047 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-20 17:16:49,048 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:8, output treesize:4 [2020-07-20 17:16:49,063 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 17:16:49,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:16:49,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925820685] [2020-07-20 17:16:49,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:16:49,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 17:16:49,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991364703] [2020-07-20 17:16:49,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 17:16:49,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:16:49,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 17:16:49,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 17:16:49,091 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 4 states. [2020-07-20 17:16:49,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:16:49,292 INFO L93 Difference]: Finished difference Result 104 states and 170 transitions. [2020-07-20 17:16:49,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 17:16:49,294 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-07-20 17:16:49,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:16:49,304 INFO L225 Difference]: With dead ends: 104 [2020-07-20 17:16:49,305 INFO L226 Difference]: Without dead ends: 49 [2020-07-20 17:16:49,309 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 17:16:49,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-07-20 17:16:49,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2020-07-20 17:16:49,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-20 17:16:49,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2020-07-20 17:16:49,354 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 10 [2020-07-20 17:16:49,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:16:49,354 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2020-07-20 17:16:49,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 17:16:49,355 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2020-07-20 17:16:49,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-20 17:16:49,355 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:16:49,356 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:16:49,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:16:49,571 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:16:49,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:16:49,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1890143313, now seen corresponding path program 1 times [2020-07-20 17:16:49,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:16:49,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661838987] [2020-07-20 17:16:49,573 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 17:16:50,236 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 17:16:50,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:16:50,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 17:16:50,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:16:50,259 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 17:16:50,260 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 17:16:50,270 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:50,270 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 17:16:50,271 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-07-20 17:16:50,291 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 17:16:50,292 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 17:16:50,294 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:50,295 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 17:16:50,295 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-20 17:16:50,302 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 17:16:50,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:16:50,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661838987] [2020-07-20 17:16:50,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:16:50,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 17:16:50,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106867187] [2020-07-20 17:16:50,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 17:16:50,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:16:50,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 17:16:50,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 17:16:50,307 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 4 states. [2020-07-20 17:16:50,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:16:50,384 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2020-07-20 17:16:50,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 17:16:50,385 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-07-20 17:16:50,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:16:50,386 INFO L225 Difference]: With dead ends: 43 [2020-07-20 17:16:50,386 INFO L226 Difference]: Without dead ends: 41 [2020-07-20 17:16:50,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 17:16:50,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-20 17:16:50,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-07-20 17:16:50,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-20 17:16:50,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-07-20 17:16:50,395 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 12 [2020-07-20 17:16:50,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:16:50,395 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-07-20 17:16:50,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 17:16:50,396 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-07-20 17:16:50,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-20 17:16:50,397 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:16:50,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:16:50,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:16:50,610 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:16:50,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:16:50,611 INFO L82 PathProgramCache]: Analyzing trace with hash 290038970, now seen corresponding path program 1 times [2020-07-20 17:16:50,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:16:50,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591088914] [2020-07-20 17:16:50,613 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 17:16:50,757 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 17:16:50,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:16:50,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 17:16:50,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:16:50,773 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 17:16:50,774 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 17:16:50,777 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:50,778 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 17:16:50,778 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-07-20 17:16:50,797 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 17:16:50,798 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 17:16:50,801 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:50,801 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 17:16:50,802 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-20 17:16:50,809 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 17:16:50,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:16:50,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591088914] [2020-07-20 17:16:50,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:16:50,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 17:16:50,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039248336] [2020-07-20 17:16:50,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 17:16:50,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:16:50,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 17:16:50,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 17:16:50,813 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 5 states. [2020-07-20 17:16:51,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:16:51,014 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2020-07-20 17:16:51,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 17:16:51,015 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-20 17:16:51,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:16:51,017 INFO L225 Difference]: With dead ends: 66 [2020-07-20 17:16:51,017 INFO L226 Difference]: Without dead ends: 64 [2020-07-20 17:16:51,017 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 17:16:51,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-07-20 17:16:51,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 48. [2020-07-20 17:16:51,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-07-20 17:16:51,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-07-20 17:16:51,032 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 14 [2020-07-20 17:16:51,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:16:51,032 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-07-20 17:16:51,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 17:16:51,033 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-07-20 17:16:51,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-20 17:16:51,035 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:16:51,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:16:51,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:16:51,250 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:16:51,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:16:51,251 INFO L82 PathProgramCache]: Analyzing trace with hash 2060721718, now seen corresponding path program 1 times [2020-07-20 17:16:51,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:16:51,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98014745] [2020-07-20 17:16:51,252 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 17:16:51,864 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 17:16:51,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:16:51,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 17:16:51,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:16:51,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 17:16:52,075 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2020-07-20 17:16:52,077 INFO L350 Elim1Store]: treesize reduction 106, result has 48.5 percent of original size [2020-07-20 17:16:52,078 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 107 [2020-07-20 17:16:52,080 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 17:16:52,270 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-07-20 17:16:52,271 INFO L624 ElimStorePlain]: treesize reduction 36, result has 80.1 percent of original size [2020-07-20 17:16:52,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 17:16:52,453 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2020-07-20 17:16:52,454 INFO L350 Elim1Store]: treesize reduction 115, result has 44.2 percent of original size [2020-07-20 17:16:52,454 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 98 [2020-07-20 17:16:52,456 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 17:16:52,616 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-07-20 17:16:52,617 INFO L624 ElimStorePlain]: treesize reduction 36, result has 78.6 percent of original size [2020-07-20 17:16:52,623 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-20 17:16:52,626 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-20 17:16:52,628 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-20 17:16:52,634 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-20 17:16:52,635 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-20 17:16:52,638 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-20 17:16:52,640 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-20 17:16:52,645 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-20 17:16:52,647 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-20 17:16:52,650 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-20 17:16:52,652 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-20 17:16:52,654 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-20 17:16:52,663 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-20 17:16:52,669 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-20 17:16:52,671 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-20 17:16:52,675 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-07-20 17:16:52,680 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-20 17:16:52,681 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-20 17:16:52,684 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-20 17:16:52,688 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-20 17:16:52,689 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-20 17:16:52,692 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-20 17:16:52,695 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-20 17:16:52,698 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-20 17:16:52,703 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-20 17:16:52,705 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-20 17:16:52,707 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-20 17:16:52,711 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-20 17:16:52,713 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-20 17:16:52,715 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 17:16:52,715 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:149, output treesize:15 [2020-07-20 17:16:52,730 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 17:16:52,730 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 17:16:52,737 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:52,740 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 17:16:52,741 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 17:16:52,744 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:52,745 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 17:16:52,745 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2020-07-20 17:16:52,755 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 17:16:52,755 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:16:52,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98014745] [2020-07-20 17:16:52,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:16:52,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 17:16:52,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990978862] [2020-07-20 17:16:52,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 17:16:52,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:16:52,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 17:16:52,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 17:16:52,757 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 4 states. [2020-07-20 17:16:52,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:16:52,857 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2020-07-20 17:16:52,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 17:16:52,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-07-20 17:16:52,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:16:52,862 INFO L225 Difference]: With dead ends: 48 [2020-07-20 17:16:52,862 INFO L226 Difference]: Without dead ends: 46 [2020-07-20 17:16:52,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 17:16:52,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-07-20 17:16:52,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-07-20 17:16:52,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-07-20 17:16:52,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-07-20 17:16:52,876 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 15 [2020-07-20 17:16:52,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:16:52,877 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-07-20 17:16:52,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 17:16:52,877 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-07-20 17:16:52,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 17:16:52,878 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:16:52,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:16:53,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:16:53,081 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:16:53,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:16:53,081 INFO L82 PathProgramCache]: Analyzing trace with hash 373775322, now seen corresponding path program 1 times [2020-07-20 17:16:53,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:16:53,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384749806] [2020-07-20 17:16:53,083 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 17:16:53,387 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 17:16:53,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:16:53,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-20 17:16:53,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:16:53,409 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-20 17:16:53,410 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 17:16:53,411 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 17:16:53,415 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:53,416 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-20 17:16:53,416 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:9, output treesize:11 [2020-07-20 17:16:53,532 INFO L350 Elim1Store]: treesize reduction 8, result has 87.3 percent of original size [2020-07-20 17:16:53,533 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 69 [2020-07-20 17:16:53,535 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 17:16:53,580 INFO L624 ElimStorePlain]: treesize reduction 28, result has 67.1 percent of original size [2020-07-20 17:16:53,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 17:16:53,592 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 17:16:53,603 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:53,605 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 17:16:53,606 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:55, output treesize:24 [2020-07-20 17:16:53,673 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:53,674 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 17:16:53,675 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 17:16:53,687 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:53,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 17:16:53,691 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 17:16:53,699 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:53,700 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 17:16:53,701 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:53, output treesize:4 [2020-07-20 17:16:53,707 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 17:16:53,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:16:53,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384749806] [2020-07-20 17:16:53,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:16:53,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 17:16:53,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561112469] [2020-07-20 17:16:53,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 17:16:53,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:16:53,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 17:16:53,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 17:16:53,710 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 5 states. [2020-07-20 17:16:53,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:16:53,789 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2020-07-20 17:16:53,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 17:16:53,791 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-20 17:16:53,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:16:53,792 INFO L225 Difference]: With dead ends: 46 [2020-07-20 17:16:53,792 INFO L226 Difference]: Without dead ends: 44 [2020-07-20 17:16:53,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 17:16:53,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-20 17:16:53,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-07-20 17:16:53,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-20 17:16:53,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-07-20 17:16:53,798 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 17 [2020-07-20 17:16:53,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:16:53,799 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-07-20 17:16:53,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 17:16:53,799 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-07-20 17:16:53,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-20 17:16:53,800 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:16:53,800 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 17:16:54,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:16:54,008 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:16:54,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:16:54,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1568846049, now seen corresponding path program 1 times [2020-07-20 17:16:54,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:16:54,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330207530] [2020-07-20 17:16:54,010 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 17:16:54,105 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 17:16:54,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:16:54,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 17:16:54,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:16:54,115 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 17:16:54,116 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 17:16:54,118 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:54,118 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 17:16:54,119 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-07-20 17:16:54,141 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 17:16:54,142 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 17:16:54,147 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:54,147 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 17:16:54,147 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-20 17:16:54,157 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 17:16:54,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:16:54,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330207530] [2020-07-20 17:16:54,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:16:54,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 17:16:54,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571026520] [2020-07-20 17:16:54,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 17:16:54,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:16:54,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 17:16:54,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 17:16:54,160 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 5 states. [2020-07-20 17:16:54,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:16:54,292 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2020-07-20 17:16:54,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 17:16:54,293 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-07-20 17:16:54,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:16:54,294 INFO L225 Difference]: With dead ends: 72 [2020-07-20 17:16:54,294 INFO L226 Difference]: Without dead ends: 60 [2020-07-20 17:16:54,294 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 17:16:54,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-20 17:16:54,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 47. [2020-07-20 17:16:54,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-20 17:16:54,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-07-20 17:16:54,308 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 18 [2020-07-20 17:16:54,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:16:54,309 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-07-20 17:16:54,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 17:16:54,309 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-07-20 17:16:54,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 17:16:54,312 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:16:54,312 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 17:16:54,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:16:54,514 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:16:54,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:16:54,515 INFO L82 PathProgramCache]: Analyzing trace with hash 777661568, now seen corresponding path program 1 times [2020-07-20 17:16:54,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:16:54,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767564286] [2020-07-20 17:16:54,516 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 17:16:54,694 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 17:16:54,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:16:54,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 17:16:54,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:16:54,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 17:16:54,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 17:16:54,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 17:16:54,716 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2020-07-20 17:16:54,716 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 17:16:54,727 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:54,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 17:16:54,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 17:16:54,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 17:16:54,735 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2020-07-20 17:16:54,736 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 17:16:54,744 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:54,745 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 17:16:54,745 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:55, output treesize:33 [2020-07-20 17:16:54,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 17:16:54,780 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2020-07-20 17:16:54,781 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 17:16:54,790 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:54,794 INFO L350 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2020-07-20 17:16:54,795 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2020-07-20 17:16:54,796 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 17:16:54,799 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:54,800 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 17:16:54,800 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:47, output treesize:7 [2020-07-20 17:16:54,813 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 17:16:54,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 17:16:54,861 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 17:16:54,884 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 17:16:54,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767564286] [2020-07-20 17:16:54,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 17:16:54,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-20 17:16:54,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122436914] [2020-07-20 17:16:54,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 17:16:54,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:16:54,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 17:16:54,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 17:16:54,888 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 7 states. [2020-07-20 17:16:55,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:16:55,138 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2020-07-20 17:16:55,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 17:16:55,139 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-07-20 17:16:55,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:16:55,140 INFO L225 Difference]: With dead ends: 61 [2020-07-20 17:16:55,140 INFO L226 Difference]: Without dead ends: 39 [2020-07-20 17:16:55,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-07-20 17:16:55,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-20 17:16:55,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-07-20 17:16:55,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-20 17:16:55,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-07-20 17:16:55,146 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 21 [2020-07-20 17:16:55,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:16:55,146 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-07-20 17:16:55,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 17:16:55,147 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-07-20 17:16:55,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 17:16:55,147 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:16:55,148 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:16:55,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:16:55,354 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:16:55,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:16:55,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1056872398, now seen corresponding path program 1 times [2020-07-20 17:16:55,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:16:55,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870905016] [2020-07-20 17:16:55,357 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:16:56,074 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 17:16:56,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:16:56,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 38 conjunts are in the unsatisfiable core [2020-07-20 17:16:56,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:16:56,096 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-20 17:16:56,097 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 17:16:56,097 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 17:16:56,113 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:56,119 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 17:16:56,119 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 17:16:56,131 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:56,133 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 17:16:56,133 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:29 [2020-07-20 17:16:56,215 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:56,216 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 17:16:56,217 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 17:16:56,314 INFO L624 ElimStorePlain]: treesize reduction 14, result has 88.9 percent of original size [2020-07-20 17:16:56,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 17:16:56,327 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 17:16:56,364 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:56,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 17:16:56,380 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 17:16:56,381 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-20 17:16:56,411 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:56,417 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 17:16:56,439 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:56,458 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:56,458 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 48 [2020-07-20 17:16:56,459 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-07-20 17:16:56,506 INFO L624 ElimStorePlain]: treesize reduction 20, result has 70.6 percent of original size [2020-07-20 17:16:56,509 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 17:16:56,510 INFO L244 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:114, output treesize:27 [2020-07-20 17:16:56,661 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:56,662 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 17:16:56,663 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 17:16:56,717 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:56,718 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.base_34|, |v_#memory_int_44|, |v_#memory_int_45|, |v_#memory_int_43|], 4=[|v_#memory_int_47|]} [2020-07-20 17:16:56,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 17:16:56,728 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 17:16:56,774 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:56,778 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 17:16:56,811 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:56,816 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 17:16:56,847 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:56,850 INFO L544 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 17:16:56,876 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:56,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 17:16:56,929 INFO L350 Elim1Store]: treesize reduction 65, result has 46.7 percent of original size [2020-07-20 17:16:56,930 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 85 [2020-07-20 17:16:56,931 INFO L544 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-07-20 17:16:56,989 INFO L624 ElimStorePlain]: treesize reduction 18, result has 81.4 percent of original size [2020-07-20 17:16:56,994 INFO L544 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, 5 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-07-20 17:16:56,994 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 11 variables, input treesize:249, output treesize:43 [2020-07-20 17:16:57,111 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 17:16:57,112 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 17:16:57,119 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:57,120 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 17:16:57,120 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:45, output treesize:3 [2020-07-20 17:16:57,137 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 17:16:57,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 17:16:57,171 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.base_34|, |v_#memory_int_44|, |v_#memory_int_45|], 3=[|v_#memory_int_43|]} [2020-07-20 17:16:57,178 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 17:16:57,399 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2020-07-20 17:16:57,400 INFO L624 ElimStorePlain]: treesize reduction 78, result has 51.6 percent of original size [2020-07-20 17:16:57,404 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 17:16:57,433 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:57,436 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 17:16:57,455 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:57,461 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 17:16:57,472 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:57,473 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 4 dim-2 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2020-07-20 17:16:57,473 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 7 variables, input treesize:233, output treesize:60 [2020-07-20 17:16:57,549 INFO L440 ElimStorePlain]: Different costs {2=[|#memory_$Pointer$.base|, |v_#memory_int_41|, |v_#memory_int_42|], 7=[|v_#memory_int_49|]} [2020-07-20 17:16:57,557 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 17:16:57,882 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 68 [2020-07-20 17:16:57,883 INFO L624 ElimStorePlain]: treesize reduction 112, result has 51.9 percent of original size [2020-07-20 17:16:57,888 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 17:16:57,922 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:57,926 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 17:16:57,955 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:57,958 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 17:16:57,980 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:16:57,982 INFO L544 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 4 dim-2 vars, End of recursive call: 12 dim-0 vars, and 1 xjuncts. [2020-07-20 17:16:57,982 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 13 variables, input treesize:331, output treesize:117 [2020-07-20 17:17:00,131 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:17:00,132 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 17:17:00,133 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 17:17:00,141 INFO L624 ElimStorePlain]: treesize reduction 129, result has 0.8 percent of original size [2020-07-20 17:17:00,143 INFO L512 ElimStorePlain]: Eliminatee |v_#memory_int_40| vanished before elimination [2020-07-20 17:17:00,143 INFO L544 ElimStorePlain]: Start of recursive call 1: 15 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 17:17:00,143 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 17 variables, input treesize:142, output treesize:1 [2020-07-20 17:17:00,151 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 17:17:00,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870905016] [2020-07-20 17:17:00,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 17:17:00,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-07-20 17:17:00,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079497529] [2020-07-20 17:17:00,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 17:17:00,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:17:00,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 17:17:00,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=83, Unknown=1, NotChecked=0, Total=110 [2020-07-20 17:17:00,154 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 11 states. [2020-07-20 17:17:06,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:17:06,882 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2020-07-20 17:17:06,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-20 17:17:06,886 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-07-20 17:17:06,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:17:06,887 INFO L225 Difference]: With dead ends: 73 [2020-07-20 17:17:06,887 INFO L226 Difference]: Without dead ends: 71 [2020-07-20 17:17:06,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=78, Invalid=193, Unknown=1, NotChecked=0, Total=272 [2020-07-20 17:17:06,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-07-20 17:17:06,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 37. [2020-07-20 17:17:06,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-20 17:17:06,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2020-07-20 17:17:06,900 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 25 [2020-07-20 17:17:06,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:17:06,900 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2020-07-20 17:17:06,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 17:17:06,901 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-07-20 17:17:06,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-20 17:17:06,902 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:17:06,902 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:17:07,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:17:07,121 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:17:07,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:17:07,121 INFO L82 PathProgramCache]: Analyzing trace with hash 473692249, now seen corresponding path program 1 times [2020-07-20 17:17:07,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:17:07,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831852140] [2020-07-20 17:17:07,123 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:17:07,483 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 17:17:07,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:17:07,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 17:17:07,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:17:07,503 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 17:17:07,503 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 17:17:07,506 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:17:07,506 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 17:17:07,506 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-20 17:17:07,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 17:17:07,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:17:07,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831852140] [2020-07-20 17:17:07,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:17:07,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 17:17:07,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304686088] [2020-07-20 17:17:07,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 17:17:07,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:17:07,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 17:17:07,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 17:17:07,516 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 5 states. [2020-07-20 17:17:07,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:17:07,634 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2020-07-20 17:17:07,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 17:17:07,635 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-07-20 17:17:07,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:17:07,635 INFO L225 Difference]: With dead ends: 52 [2020-07-20 17:17:07,636 INFO L226 Difference]: Without dead ends: 40 [2020-07-20 17:17:07,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 17:17:07,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-20 17:17:07,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-07-20 17:17:07,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-20 17:17:07,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-07-20 17:17:07,645 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 29 [2020-07-20 17:17:07,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:17:07,645 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-07-20 17:17:07,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 17:17:07,645 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-07-20 17:17:07,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-20 17:17:07,646 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:17:07,646 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:17:07,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:17:07,848 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:17:07,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:17:07,848 INFO L82 PathProgramCache]: Analyzing trace with hash -377613816, now seen corresponding path program 1 times [2020-07-20 17:17:07,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:17:07,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727694334] [2020-07-20 17:17:07,850 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:17:08,659 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 17:17:08,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:17:08,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 51 conjunts are in the unsatisfiable core [2020-07-20 17:17:08,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:17:08,685 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-20 17:17:08,685 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 17:17:08,686 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 17:17:08,696 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:17:08,697 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 17:17:08,697 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:23 [2020-07-20 17:17:08,762 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:17:08,763 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 17:17:08,764 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 17:17:08,886 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-07-20 17:17:08,887 INFO L624 ElimStorePlain]: treesize reduction 14, result has 93.5 percent of original size [2020-07-20 17:17:08,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 17:17:08,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 17:17:08,902 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 17:17:08,920 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:17:08,921 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 41 [2020-07-20 17:17:08,921 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 17:17:09,007 INFO L624 ElimStorePlain]: treesize reduction 16, result has 89.4 percent of original size [2020-07-20 17:17:09,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 17:17:09,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 17:17:09,028 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:17:09,029 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 41 [2020-07-20 17:17:09,029 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-20 17:17:09,096 INFO L624 ElimStorePlain]: treesize reduction 16, result has 81.2 percent of original size [2020-07-20 17:17:09,098 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 17:17:09,098 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:203, output treesize:82 [2020-07-20 17:17:09,205 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:17:09,205 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 30 [2020-07-20 17:17:09,206 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 17:17:09,385 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-07-20 17:17:09,385 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:17:09,391 INFO L440 ElimStorePlain]: Different costs {6=[|v_#memory_$Pointer$.offset_37|, |v_#memory_$Pointer$.base_41|], 11=[|v_#memory_$Pointer$.base_39|, |v_#memory_$Pointer$.offset_35|]} [2020-07-20 17:17:09,437 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 39 [2020-07-20 17:17:09,438 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 17:17:09,650 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-07-20 17:17:09,651 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:17:09,667 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:17:09,668 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 406 treesize of output 274 [2020-07-20 17:17:09,670 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-20 17:17:10,126 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-07-20 17:17:10,126 INFO L624 ElimStorePlain]: treesize reduction 16, result has 96.1 percent of original size [2020-07-20 17:17:10,391 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 58 [2020-07-20 17:17:10,392 INFO L350 Elim1Store]: treesize reduction 250, result has 36.9 percent of original size [2020-07-20 17:17:10,392 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 327 treesize of output 281 [2020-07-20 17:17:10,394 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 12 disjuncts [2020-07-20 17:17:10,395 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-07-20 17:17:10,397 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 10 disjuncts [2020-07-20 17:17:10,398 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-07-20 17:17:10,399 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 8 disjuncts [2020-07-20 17:17:10,400 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-07-20 17:17:10,404 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-07-20 17:17:10,405 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 8 disjuncts [2020-07-20 17:17:10,406 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-07-20 17:17:10,410 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 12 disjuncts [2020-07-20 17:17:10,412 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 11 disjuncts [2020-07-20 17:17:10,413 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 10 disjuncts [2020-07-20 17:17:10,414 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-07-20 17:17:10,415 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 8 disjuncts [2020-07-20 17:17:10,415 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-07-20 17:17:10,418 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-07-20 17:17:10,419 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 8 disjuncts [2020-07-20 17:17:10,420 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-07-20 17:17:10,423 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 17:17:10,632 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2020-07-20 17:17:10,632 INFO L624 ElimStorePlain]: treesize reduction 118, result has 59.2 percent of original size [2020-07-20 17:17:10,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 17:17:10,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 17:17:10,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 17:17:10,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 17:17:10,697 INFO L350 Elim1Store]: treesize reduction 5, result has 90.7 percent of original size [2020-07-20 17:17:10,697 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 89 [2020-07-20 17:17:10,698 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-07-20 17:17:10,786 INFO L624 ElimStorePlain]: treesize reduction 41, result has 68.0 percent of original size [2020-07-20 17:17:10,788 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 17:17:10,788 INFO L244 ElimStorePlain]: Needed 6 recursive calls to eliminate 6 variables, input treesize:457, output treesize:121 [2020-07-20 17:17:10,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 17:17:10,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 17:17:10,930 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 19 [2020-07-20 17:17:10,931 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 17:17:10,949 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:17:10,950 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 17:17:10,950 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:143, output treesize:80 [2020-07-20 17:17:11,017 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:17:11,018 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 81 treesize of output 59 [2020-07-20 17:17:11,019 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 17:17:11,020 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 17:17:11,020 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:17:11,020 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:17:11,021 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 17:17:11,021 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 17:17:11,021 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 17:17:11,034 INFO L624 ElimStorePlain]: treesize reduction 22, result has 29.0 percent of original size [2020-07-20 17:17:11,035 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 17:17:11,035 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:81, output treesize:4 [2020-07-20 17:17:11,064 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 17:17:11,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 17:17:11,171 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 17:17:11,174 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 17:17:11,177 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 17:17:11,183 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.offset_38|], 6=[|v_#memory_$Pointer$.base_42|], 20=[|v_#memory_$Pointer$.base_39|, |v_#memory_$Pointer$.offset_35|]} [2020-07-20 17:17:11,197 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 17:17:11,206 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 17:17:11,537 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-07-20 17:17:11,543 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:17:11,556 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 17:17:11,570 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 17:17:11,856 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-07-20 17:17:11,857 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:17:11,870 INFO L544 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 17:17:11,878 INFO L544 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 17:17:12,149 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-07-20 17:17:12,149 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:17:12,162 INFO L544 ElimStorePlain]: Start of recursive call 8: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 17:17:12,175 INFO L544 ElimStorePlain]: Start of recursive call 9: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 17:17:12,510 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-07-20 17:17:12,510 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:17:12,513 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 4 dim-2 vars, End of recursive call: 10 dim-0 vars, and 2 xjuncts. [2020-07-20 17:17:12,513 INFO L244 ElimStorePlain]: Needed 9 recursive calls to eliminate 5 variables, input treesize:1145, output treesize:1527 [2020-07-20 17:17:13,705 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-07-20 17:17:13,714 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 17:17:13,732 INFO L440 ElimStorePlain]: Different costs {36=[|#memory_$Pointer$.offset|], 66=[|#memory_$Pointer$.base|]} [2020-07-20 17:17:13,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 17:17:13,833 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 17:17:13,834 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 17:17:17,813 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43711996984108 treesize of output 43711728548652