/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 22:45:12,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 22:45:12,444 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 22:45:12,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 22:45:12,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 22:45:12,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 22:45:12,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 22:45:12,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 22:45:12,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 22:45:12,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 22:45:12,476 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 22:45:12,478 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 22:45:12,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 22:45:12,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 22:45:12,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 22:45:12,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 22:45:12,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 22:45:12,487 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 22:45:12,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 22:45:12,493 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 22:45:12,495 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 22:45:12,497 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 22:45:12,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 22:45:12,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 22:45:12,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 22:45:12,512 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 22:45:12,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 22:45:12,513 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 22:45:12,514 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 22:45:12,518 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 22:45:12,518 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 22:45:12,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 22:45:12,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 22:45:12,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 22:45:12,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 22:45:12,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 22:45:12,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 22:45:12,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 22:45:12,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 22:45:12,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 22:45:12,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 22:45:12,542 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 22:45:12,560 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 22:45:12,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 22:45:12,563 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 22:45:12,564 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 22:45:12,564 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 22:45:12,564 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 22:45:12,565 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 22:45:12,565 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 22:45:12,565 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 22:45:12,565 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 22:45:12,565 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 22:45:12,566 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 22:45:12,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 22:45:12,566 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 22:45:12,566 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 22:45:12,567 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 22:45:12,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 22:45:12,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 22:45:12,568 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 22:45:12,568 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 22:45:12,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 22:45:12,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:45:12,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 22:45:12,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 22:45:12,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 22:45:12,569 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 22:45:12,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:45:12,570 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 22:45:12,570 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 22:45:12,570 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 22:45:13,017 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 22:45:13,048 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 22:45:13,057 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 22:45:13,059 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 22:45:13,060 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 22:45:13,061 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-07-21 22:45:13,157 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59e378351/efcf7b45dc994217b4e3598763477603/FLAG4cc7245e2 [2020-07-21 22:45:13,950 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 22:45:13,951 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-07-21 22:45:13,969 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59e378351/efcf7b45dc994217b4e3598763477603/FLAG4cc7245e2 [2020-07-21 22:45:14,089 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59e378351/efcf7b45dc994217b4e3598763477603 [2020-07-21 22:45:14,101 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 22:45:14,105 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 22:45:14,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 22:45:14,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 22:45:14,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 22:45:14,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:45:14" (1/1) ... [2020-07-21 22:45:14,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24dcfc9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:45:14, skipping insertion in model container [2020-07-21 22:45:14,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:45:14" (1/1) ... [2020-07-21 22:45:14,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 22:45:14,182 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 22:45:14,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:45:14,791 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 22:45:14,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:45:14,969 INFO L208 MainTranslator]: Completed translation [2020-07-21 22:45:14,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:45:14 WrapperNode [2020-07-21 22:45:14,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 22:45:14,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 22:45:14,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 22:45:14,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 22:45:14,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:45:14" (1/1) ... [2020-07-21 22:45:14,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:45:14" (1/1) ... [2020-07-21 22:45:15,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:45:14" (1/1) ... [2020-07-21 22:45:15,011 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:45:14" (1/1) ... [2020-07-21 22:45:15,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:45:14" (1/1) ... [2020-07-21 22:45:15,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:45:14" (1/1) ... [2020-07-21 22:45:15,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:45:14" (1/1) ... [2020-07-21 22:45:15,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 22:45:15,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 22:45:15,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 22:45:15,053 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 22:45:15,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:45:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:45:15,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 22:45:15,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 22:45:15,134 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 22:45:15,134 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-21 22:45:15,134 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-21 22:45:15,135 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-21 22:45:15,135 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-21 22:45:15,135 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-21 22:45:15,135 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-21 22:45:15,135 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-21 22:45:15,136 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-21 22:45:15,136 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-21 22:45:15,136 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-21 22:45:15,136 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-21 22:45:15,137 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-21 22:45:15,137 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-21 22:45:15,137 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-21 22:45:15,137 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-21 22:45:15,137 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-21 22:45:15,138 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-21 22:45:15,138 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-21 22:45:15,138 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-21 22:45:15,138 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-21 22:45:15,138 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-21 22:45:15,139 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-21 22:45:15,139 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-21 22:45:15,139 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-21 22:45:15,139 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-21 22:45:15,139 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-21 22:45:15,140 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-21 22:45:15,140 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-21 22:45:15,140 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-21 22:45:15,140 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-21 22:45:15,140 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-21 22:45:15,140 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-21 22:45:15,140 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-21 22:45:15,141 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-21 22:45:15,141 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-21 22:45:15,141 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-21 22:45:15,141 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-21 22:45:15,141 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-21 22:45:15,141 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-21 22:45:15,142 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-21 22:45:15,142 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-21 22:45:15,142 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-21 22:45:15,142 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-21 22:45:15,142 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-21 22:45:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-21 22:45:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-21 22:45:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-21 22:45:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-21 22:45:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-21 22:45:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-21 22:45:15,144 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 22:45:15,144 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-21 22:45:15,144 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-21 22:45:15,144 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 22:45:15,144 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-21 22:45:15,145 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-21 22:45:15,145 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-21 22:45:15,145 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-21 22:45:15,145 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-21 22:45:15,145 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 22:45:15,146 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-21 22:45:15,146 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-21 22:45:15,146 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-21 22:45:15,146 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 22:45:15,146 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-21 22:45:15,146 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-21 22:45:15,147 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-21 22:45:15,147 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-21 22:45:15,147 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-21 22:45:15,147 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-21 22:45:15,147 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-21 22:45:15,147 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-21 22:45:15,148 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-21 22:45:15,148 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-21 22:45:15,148 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-21 22:45:15,148 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-21 22:45:15,148 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-21 22:45:15,148 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-21 22:45:15,149 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-21 22:45:15,149 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-21 22:45:15,149 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-21 22:45:15,149 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-21 22:45:15,149 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-21 22:45:15,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-21 22:45:15,150 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-21 22:45:15,150 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-21 22:45:15,150 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-21 22:45:15,150 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-21 22:45:15,150 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-21 22:45:15,150 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-21 22:45:15,151 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-21 22:45:15,151 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-21 22:45:15,151 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-21 22:45:15,151 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-21 22:45:15,151 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-21 22:45:15,151 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-21 22:45:15,152 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-21 22:45:15,152 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-21 22:45:15,152 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-21 22:45:15,152 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-21 22:45:15,152 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-21 22:45:15,152 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-21 22:45:15,152 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-21 22:45:15,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 22:45:15,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 22:45:15,153 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 22:45:15,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 22:45:15,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 22:45:15,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 22:45:15,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 22:45:15,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 22:45:15,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 22:45:15,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 22:45:15,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 22:45:15,878 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 22:45:15,879 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-07-21 22:45:15,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:45:15 BoogieIcfgContainer [2020-07-21 22:45:15,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 22:45:15,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 22:45:15,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 22:45:15,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 22:45:15,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:45:14" (1/3) ... [2020-07-21 22:45:15,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@309aedf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:45:15, skipping insertion in model container [2020-07-21 22:45:15,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:45:14" (2/3) ... [2020-07-21 22:45:15,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@309aedf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:45:15, skipping insertion in model container [2020-07-21 22:45:15,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:45:15" (3/3) ... [2020-07-21 22:45:15,904 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2020-07-21 22:45:15,920 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 22:45:15,934 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-07-21 22:45:15,954 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-07-21 22:45:15,992 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 22:45:15,993 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 22:45:15,993 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 22:45:15,993 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 22:45:15,993 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 22:45:15,993 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 22:45:15,993 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 22:45:15,993 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 22:45:16,022 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-07-21 22:45:16,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 22:45:16,032 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:45:16,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:45:16,034 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:45:16,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:45:16,044 INFO L82 PathProgramCache]: Analyzing trace with hash -742552803, now seen corresponding path program 1 times [2020-07-21 22:45:16,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:45:16,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653585009] [2020-07-21 22:45:16,060 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:45:16,387 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:45:16,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:45:16,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 22:45:16,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:45:16,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:45:16,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:45:16,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653585009] [2020-07-21 22:45:16,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:45:16,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 22:45:16,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111127134] [2020-07-21 22:45:16,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 22:45:16,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:45:16,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 22:45:16,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 22:45:16,506 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2020-07-21 22:45:16,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:45:16,562 INFO L93 Difference]: Finished difference Result 67 states and 104 transitions. [2020-07-21 22:45:16,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 22:45:16,564 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-21 22:45:16,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:45:16,596 INFO L225 Difference]: With dead ends: 67 [2020-07-21 22:45:16,597 INFO L226 Difference]: Without dead ends: 31 [2020-07-21 22:45:16,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 22:45:16,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-21 22:45:16,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-07-21 22:45:16,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-21 22:45:16,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-07-21 22:45:16,667 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 10 [2020-07-21 22:45:16,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:45:16,668 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-07-21 22:45:16,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 22:45:16,668 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-07-21 22:45:16,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-21 22:45:16,669 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:45:16,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:45:16,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:45:16,874 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:45:16,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:45:16,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1556669446, now seen corresponding path program 1 times [2020-07-21 22:45:16,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:45:16,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905779390] [2020-07-21 22:45:16,877 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:45:17,019 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:45:17,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:45:17,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 22:45:17,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:45:17,109 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-07-21 22:45:17,113 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:45:17,125 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:17,126 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 22:45:17,126 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:8, output treesize:4 [2020-07-21 22:45:17,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:45:17,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:45:17,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905779390] [2020-07-21 22:45:17,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:45:17,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 22:45:17,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113517659] [2020-07-21 22:45:17,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 22:45:17,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:45:17,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 22:45:17,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 22:45:17,148 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 4 states. [2020-07-21 22:45:17,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:45:17,251 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-07-21 22:45:17,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 22:45:17,252 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-07-21 22:45:17,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:45:17,254 INFO L225 Difference]: With dead ends: 37 [2020-07-21 22:45:17,254 INFO L226 Difference]: Without dead ends: 35 [2020-07-21 22:45:17,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 22:45:17,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-21 22:45:17,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2020-07-21 22:45:17,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-21 22:45:17,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-07-21 22:45:17,266 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 11 [2020-07-21 22:45:17,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:45:17,266 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-07-21 22:45:17,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 22:45:17,267 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-07-21 22:45:17,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 22:45:17,268 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:45:17,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:45:17,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:45:17,483 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:45:17,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:45:17,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1973625457, now seen corresponding path program 1 times [2020-07-21 22:45:17,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:45:17,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086312289] [2020-07-21 22:45:17,486 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:45:17,666 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:45:17,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:45:17,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-21 22:45:17,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:45:17,704 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-21 22:45:17,705 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:45:17,712 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:17,713 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 22:45:17,713 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2020-07-21 22:45:17,754 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-21 22:45:17,756 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:45:17,760 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:17,761 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 22:45:17,761 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-07-21 22:45:17,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:45:17,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:45:17,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086312289] [2020-07-21 22:45:17,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:45:17,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 22:45:17,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840633365] [2020-07-21 22:45:17,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 22:45:17,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:45:17,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 22:45:17,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 22:45:17,779 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 5 states. [2020-07-21 22:45:17,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:45:17,978 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2020-07-21 22:45:17,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 22:45:17,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-21 22:45:17,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:45:17,981 INFO L225 Difference]: With dead ends: 61 [2020-07-21 22:45:17,982 INFO L226 Difference]: Without dead ends: 59 [2020-07-21 22:45:17,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:45:17,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-07-21 22:45:17,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 39. [2020-07-21 22:45:17,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-21 22:45:17,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-07-21 22:45:17,995 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 14 [2020-07-21 22:45:17,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:45:17,996 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-07-21 22:45:17,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 22:45:17,996 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-07-21 22:45:17,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-21 22:45:17,998 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:45:17,998 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:45:18,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:45:18,213 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:45:18,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:45:18,215 INFO L82 PathProgramCache]: Analyzing trace with hash -954667545, now seen corresponding path program 1 times [2020-07-21 22:45:18,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:45:18,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041823594] [2020-07-21 22:45:18,216 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:45:18,602 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:45:18,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:45:18,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 38 conjunts are in the unsatisfiable core [2020-07-21 22:45:18,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:45:18,673 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-21 22:45:18,674 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2020-07-21 22:45:18,675 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:45:18,703 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:18,712 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-21 22:45:18,713 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 22:45:18,728 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:18,729 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 22:45:18,730 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:29 [2020-07-21 22:45:18,814 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:18,815 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-07-21 22:45:18,817 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:45:18,896 INFO L624 ElimStorePlain]: treesize reduction 14, result has 81.1 percent of original size [2020-07-21 22:45:18,909 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 22:45:18,936 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:18,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 22:45:18,948 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 20 [2020-07-21 22:45:18,951 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 22:45:18,972 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:18,974 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 22:45:18,975 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:62, output treesize:27 [2020-07-21 22:45:19,055 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:19,056 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2020-07-21 22:45:19,057 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:45:19,101 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:19,104 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_30|, |v_#memory_int_31|], 4=[|v_#memory_int_33|]} [2020-07-21 22:45:19,109 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 22:45:19,142 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:19,147 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 22:45:19,175 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:19,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 22:45:19,209 INFO L350 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2020-07-21 22:45:19,210 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 45 [2020-07-21 22:45:19,212 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-21 22:45:19,235 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:19,241 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-07-21 22:45:19,241 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:80, output treesize:43 [2020-07-21 22:45:19,361 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 [2020-07-21 22:45:19,363 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:45:19,374 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:19,375 INFO L544 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 22:45:19,376 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:45, output treesize:3 [2020-07-21 22:45:19,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:45:19,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:45:19,455 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_31|], 3=[|v_#memory_int_30|]} [2020-07-21 22:45:19,460 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 22:45:19,485 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:19,489 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 22:45:19,505 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:19,508 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-07-21 22:45:19,508 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:63, output treesize:55 [2020-07-21 22:45:19,586 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_29|], 6=[|v_#memory_int_35|]} [2020-07-21 22:45:19,592 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 22:45:19,629 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:19,635 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 22:45:19,666 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:19,669 INFO L544 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-2 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2020-07-21 22:45:19,670 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:96, output treesize:102 [2020-07-21 22:45:21,868 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:21,868 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 32 [2020-07-21 22:45:21,869 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:45:21,882 INFO L624 ElimStorePlain]: treesize reduction 114, result has 0.9 percent of original size [2020-07-21 22:45:21,886 INFO L512 ElimStorePlain]: Eliminatee |v_#memory_int_28| vanished before elimination [2020-07-21 22:45:21,887 INFO L544 ElimStorePlain]: Start of recursive call 1: 11 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 22:45:21,887 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 13 variables, input treesize:127, output treesize:1 [2020-07-21 22:45:21,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:45:21,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041823594] [2020-07-21 22:45:21,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:45:21,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-07-21 22:45:21,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119548519] [2020-07-21 22:45:21,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 22:45:21,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:45:21,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 22:45:21,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=83, Unknown=1, NotChecked=0, Total=110 [2020-07-21 22:45:21,905 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 11 states. [2020-07-21 22:45:30,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:45:30,900 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2020-07-21 22:45:30,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 22:45:30,902 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2020-07-21 22:45:30,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:45:30,904 INFO L225 Difference]: With dead ends: 66 [2020-07-21 22:45:30,904 INFO L226 Difference]: Without dead ends: 64 [2020-07-21 22:45:30,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=78, Invalid=193, Unknown=1, NotChecked=0, Total=272 [2020-07-21 22:45:30,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-07-21 22:45:30,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 27. [2020-07-21 22:45:30,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-21 22:45:30,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-07-21 22:45:30,914 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2020-07-21 22:45:30,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:45:30,914 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-07-21 22:45:30,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 22:45:30,915 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-07-21 22:45:30,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-21 22:45:30,916 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:45:30,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:45:31,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:45:31,122 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:45:31,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:45:31,123 INFO L82 PathProgramCache]: Analyzing trace with hash 903516662, now seen corresponding path program 1 times [2020-07-21 22:45:31,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:45:31,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459118164] [2020-07-21 22:45:31,124 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:45:31,257 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:45:31,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:45:31,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:45:31,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:45:31,293 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-07-21 22:45:31,295 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:45:31,300 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:31,300 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 22:45:31,300 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-21 22:45:31,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:45:31,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:45:31,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459118164] [2020-07-21 22:45:31,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:45:31,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 22:45:31,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366286133] [2020-07-21 22:45:31,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 22:45:31,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:45:31,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 22:45:31,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 22:45:31,319 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 5 states. [2020-07-21 22:45:31,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:45:31,461 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-07-21 22:45:31,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 22:45:31,463 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-07-21 22:45:31,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:45:31,464 INFO L225 Difference]: With dead ends: 42 [2020-07-21 22:45:31,465 INFO L226 Difference]: Without dead ends: 30 [2020-07-21 22:45:31,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 22:45:31,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-21 22:45:31,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-07-21 22:45:31,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-21 22:45:31,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-07-21 22:45:31,474 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 18 [2020-07-21 22:45:31,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:45:31,474 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-07-21 22:45:31,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 22:45:31,475 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-07-21 22:45:31,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-21 22:45:31,476 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:45:31,476 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:45:31,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:45:31,679 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:45:31,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:45:31,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1223911862, now seen corresponding path program 1 times [2020-07-21 22:45:31,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:45:31,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475073211] [2020-07-21 22:45:31,682 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:45:31,813 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:45:31,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:45:31,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 19 conjunts are in the unsatisfiable core [2020-07-21 22:45:31,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:45:31,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 22:45:31,866 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:31,867 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 31 [2020-07-21 22:45:31,868 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:45:31,921 INFO L624 ElimStorePlain]: treesize reduction 12, result has 84.0 percent of original size [2020-07-21 22:45:31,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 22:45:31,947 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:31,948 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 31 [2020-07-21 22:45:31,949 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 22:45:31,990 INFO L624 ElimStorePlain]: treesize reduction 16, result has 70.9 percent of original size [2020-07-21 22:45:31,991 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 22:45:31,991 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:83, output treesize:39 [2020-07-21 22:45:32,046 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:45:32,060 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 22:45:32,063 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:45:32,081 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:32,081 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 18 [2020-07-21 22:45:32,082 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:45:32,088 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-21 22:45:32,090 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 22:45:32,116 INFO L624 ElimStorePlain]: treesize reduction 44, result has 32.3 percent of original size [2020-07-21 22:45:32,121 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-21 22:45:32,123 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 22:45:32,129 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:32,130 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 22:45:32,130 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:86, output treesize:10 [2020-07-21 22:45:32,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:45:32,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:45:32,236 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:45:32,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:45:32,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475073211] [2020-07-21 22:45:32,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:45:32,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-21 22:45:32,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121089877] [2020-07-21 22:45:32,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 22:45:32,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:45:32,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 22:45:32,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-07-21 22:45:32,262 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 8 states. [2020-07-21 22:45:32,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:45:32,563 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-07-21 22:45:32,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 22:45:32,563 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-07-21 22:45:32,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:45:32,564 INFO L225 Difference]: With dead ends: 53 [2020-07-21 22:45:32,566 INFO L226 Difference]: Without dead ends: 31 [2020-07-21 22:45:32,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-07-21 22:45:32,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-21 22:45:32,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-07-21 22:45:32,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-21 22:45:32,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-07-21 22:45:32,575 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 21 [2020-07-21 22:45:32,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:45:32,575 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-07-21 22:45:32,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 22:45:32,576 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-07-21 22:45:32,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 22:45:32,577 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:45:32,577 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:45:32,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:45:32,781 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:45:32,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:45:32,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1223476830, now seen corresponding path program 1 times [2020-07-21 22:45:32,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:45:32,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265797125] [2020-07-21 22:45:32,782 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:45:32,999 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:45:32,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:45:33,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 50 conjunts are in the unsatisfiable core [2020-07-21 22:45:33,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:45:33,022 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-21 22:45:33,022 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2020-07-21 22:45:33,023 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:45:33,033 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:33,034 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 22:45:33,034 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:27 [2020-07-21 22:45:33,095 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:33,096 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 69 [2020-07-21 22:45:33,099 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:45:33,171 INFO L624 ElimStorePlain]: treesize reduction 28, result has 76.5 percent of original size [2020-07-21 22:45:33,177 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-07-21 22:45:33,178 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 22:45:33,232 INFO L624 ElimStorePlain]: treesize reduction 4, result has 94.9 percent of original size [2020-07-21 22:45:33,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 22:45:33,240 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-07-21 22:45:33,240 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 22:45:33,262 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:33,262 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 22:45:33,262 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:89, output treesize:61 [2020-07-21 22:45:33,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 22:45:33,399 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:33,399 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 41 [2020-07-21 22:45:33,400 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:45:33,478 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:33,484 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 22:45:33,548 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:33,556 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 22:45:33,596 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:33,719 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2020-07-21 22:45:33,720 INFO L350 Elim1Store]: treesize reduction 124, result has 41.2 percent of original size [2020-07-21 22:45:33,720 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 159 treesize of output 152 [2020-07-21 22:45:33,724 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[9, 3, 2, 1] term [2020-07-21 22:45:33,725 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-07-21 22:45:33,726 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-21 22:45:33,817 INFO L624 ElimStorePlain]: treesize reduction 82, result has 62.9 percent of original size [2020-07-21 22:45:33,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 22:45:33,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 22:45:33,833 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 43 [2020-07-21 22:45:33,835 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-07-21 22:45:33,874 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:33,876 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 4 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 22:45:33,880 INFO L244 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:231, output treesize:93 [2020-07-21 22:45:34,005 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 10 [2020-07-21 22:45:34,005 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:45:34,017 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:34,019 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-07-21 22:45:34,019 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:104, output treesize:78 [2020-07-21 22:45:34,730 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:34,731 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 61 [2020-07-21 22:45:34,732 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-07-21 22:45:34,734 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-07-21 22:45:34,735 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 22:45:34,739 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:45:34,754 INFO L624 ElimStorePlain]: treesize reduction 36, result has 26.5 percent of original size [2020-07-21 22:45:34,754 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 22:45:34,755 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:79, output treesize:4 [2020-07-21 22:45:34,774 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:45:34,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:45:34,840 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.offset_32|], 6=[|v_#memory_$Pointer$.offset_29|, |v_#memory_$Pointer$.base_29|, |v_#memory_$Pointer$.base_32|]} [2020-07-21 22:45:34,845 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 22:45:34,881 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:34,885 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 22:45:34,927 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:34,931 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 22:45:34,950 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:34,958 INFO L544 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 22:45:34,972 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:34,973 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 4 dim-2 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2020-07-21 22:45:34,974 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 7 variables, input treesize:141, output treesize:140 [2020-07-21 22:45:35,041 INFO L440 ElimStorePlain]: Different costs {6=[|#memory_$Pointer$.offset|], 14=[|#memory_$Pointer$.base|]} [2020-07-21 22:45:35,121 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 92472118 treesize of output 92439350 [2020-07-21 22:45:43,307 INFO L544 ElimStorePlain]: Start of recursive call 2: 8192 dim-0 vars, End of recursive call: 8192 dim-0 vars, and 2 xjuncts.