/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 13:55:42,976 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 13:55:42,978 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 13:55:42,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 13:55:42,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 13:55:42,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 13:55:43,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 13:55:43,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 13:55:43,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 13:55:43,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 13:55:43,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 13:55:43,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 13:55:43,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 13:55:43,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 13:55:43,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 13:55:43,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 13:55:43,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 13:55:43,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 13:55:43,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 13:55:43,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 13:55:43,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 13:55:43,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 13:55:43,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 13:55:43,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 13:55:43,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 13:55:43,045 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 13:55:43,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 13:55:43,047 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 13:55:43,048 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 13:55:43,049 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 13:55:43,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 13:55:43,050 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 13:55:43,050 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 13:55:43,051 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 13:55:43,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 13:55:43,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 13:55:43,053 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 13:55:43,053 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 13:55:43,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 13:55:43,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 13:55:43,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 13:55:43,056 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 13:55:43,090 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 13:55:43,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 13:55:43,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 13:55:43,095 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 13:55:43,095 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 13:55:43,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 13:55:43,095 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 13:55:43,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 13:55:43,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 13:55:43,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 13:55:43,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 13:55:43,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 13:55:43,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 13:55:43,097 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 13:55:43,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 13:55:43,098 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 13:55:43,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 13:55:43,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 13:55:43,099 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 13:55:43,099 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 13:55:43,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 13:55:43,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:55:43,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 13:55:43,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 13:55:43,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 13:55:43,100 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 13:55:43,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:55:43,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 13:55:43,101 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 13:55:43,101 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 13:55:43,399 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 13:55:43,412 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 13:55:43,416 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 13:55:43,417 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 13:55:43,417 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 13:55:43,418 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-07-20 13:55:43,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f12c14f0/dd084d9b1ce345b8bf917fc94ac3bc68/FLAG71dd34774 [2020-07-20 13:55:44,006 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 13:55:44,007 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-07-20 13:55:44,033 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f12c14f0/dd084d9b1ce345b8bf917fc94ac3bc68/FLAG71dd34774 [2020-07-20 13:55:44,293 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f12c14f0/dd084d9b1ce345b8bf917fc94ac3bc68 [2020-07-20 13:55:44,302 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 13:55:44,304 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 13:55:44,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 13:55:44,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 13:55:44,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 13:55:44,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:55:44" (1/1) ... [2020-07-20 13:55:44,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@627d1cf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:44, skipping insertion in model container [2020-07-20 13:55:44,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:55:44" (1/1) ... [2020-07-20 13:55:44,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 13:55:44,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 13:55:44,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:55:44,852 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 13:55:44,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:55:44,975 INFO L208 MainTranslator]: Completed translation [2020-07-20 13:55:44,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:44 WrapperNode [2020-07-20 13:55:44,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 13:55:44,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 13:55:44,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 13:55:44,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 13:55:44,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:44" (1/1) ... [2020-07-20 13:55:44,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:44" (1/1) ... [2020-07-20 13:55:45,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:44" (1/1) ... [2020-07-20 13:55:45,011 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:44" (1/1) ... [2020-07-20 13:55:45,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:44" (1/1) ... [2020-07-20 13:55:45,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:44" (1/1) ... [2020-07-20 13:55:45,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:44" (1/1) ... [2020-07-20 13:55:45,047 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 13:55:45,048 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 13:55:45,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 13:55:45,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 13:55:45,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:55:45,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 13:55:45,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 13:55:45,105 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 13:55:45,105 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-20 13:55:45,106 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-20 13:55:45,106 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-20 13:55:45,106 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-20 13:55:45,106 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-20 13:55:45,106 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-20 13:55:45,106 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-20 13:55:45,107 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-20 13:55:45,107 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-20 13:55:45,107 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-20 13:55:45,107 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-20 13:55:45,107 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-20 13:55:45,107 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-20 13:55:45,108 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-20 13:55:45,108 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-20 13:55:45,108 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-20 13:55:45,108 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-20 13:55:45,108 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-20 13:55:45,108 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-20 13:55:45,108 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-20 13:55:45,109 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-20 13:55:45,109 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-20 13:55:45,109 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-20 13:55:45,109 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-20 13:55:45,109 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-20 13:55:45,110 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-20 13:55:45,110 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-20 13:55:45,110 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-20 13:55:45,110 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-20 13:55:45,110 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-20 13:55:45,110 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-20 13:55:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-20 13:55:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-20 13:55:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-20 13:55:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-20 13:55:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-20 13:55:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-20 13:55:45,112 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-20 13:55:45,112 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-20 13:55:45,112 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-20 13:55:45,112 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-20 13:55:45,112 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-20 13:55:45,112 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-20 13:55:45,112 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-20 13:55:45,112 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-20 13:55:45,112 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-20 13:55:45,113 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-20 13:55:45,113 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-20 13:55:45,113 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-20 13:55:45,113 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-20 13:55:45,113 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 13:55:45,113 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-20 13:55:45,114 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-20 13:55:45,114 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 13:55:45,114 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-20 13:55:45,114 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-20 13:55:45,114 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-20 13:55:45,114 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-20 13:55:45,114 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-20 13:55:45,115 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 13:55:45,115 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-20 13:55:45,115 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-20 13:55:45,115 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-20 13:55:45,115 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 13:55:45,115 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-20 13:55:45,115 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-20 13:55:45,115 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-20 13:55:45,116 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-20 13:55:45,116 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-20 13:55:45,116 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-20 13:55:45,116 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-20 13:55:45,116 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-20 13:55:45,116 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-20 13:55:45,117 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-20 13:55:45,117 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-20 13:55:45,117 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-20 13:55:45,117 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-20 13:55:45,117 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-20 13:55:45,117 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-20 13:55:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-20 13:55:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-20 13:55:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-20 13:55:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-20 13:55:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-20 13:55:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-20 13:55:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-20 13:55:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-20 13:55:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-20 13:55:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-20 13:55:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-20 13:55:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-20 13:55:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-20 13:55:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-20 13:55:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-20 13:55:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-20 13:55:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-20 13:55:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-20 13:55:45,120 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-20 13:55:45,120 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-20 13:55:45,120 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-20 13:55:45,120 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-20 13:55:45,120 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-20 13:55:45,120 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-20 13:55:45,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 13:55:45,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 13:55:45,120 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 13:55:45,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 13:55:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 13:55:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 13:55:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 13:55:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 13:55:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 13:55:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 13:55:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 13:55:45,731 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 13:55:45,732 INFO L295 CfgBuilder]: Removed 17 assume(true) statements. [2020-07-20 13:55:45,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:55:45 BoogieIcfgContainer [2020-07-20 13:55:45,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 13:55:45,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 13:55:45,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 13:55:45,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 13:55:45,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:55:44" (1/3) ... [2020-07-20 13:55:45,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b0438a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:55:45, skipping insertion in model container [2020-07-20 13:55:45,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:44" (2/3) ... [2020-07-20 13:55:45,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b0438a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:55:45, skipping insertion in model container [2020-07-20 13:55:45,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:55:45" (3/3) ... [2020-07-20 13:55:45,744 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2020-07-20 13:55:45,754 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 13:55:45,762 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-07-20 13:55:45,776 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-07-20 13:55:45,801 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 13:55:45,801 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 13:55:45,801 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 13:55:45,801 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 13:55:45,802 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 13:55:45,802 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 13:55:45,802 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 13:55:45,802 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 13:55:45,823 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-07-20 13:55:45,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-20 13:55:45,829 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:55:45,830 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:55:45,831 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:55:45,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:55:45,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1255802584, now seen corresponding path program 1 times [2020-07-20 13:55:45,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:55:45,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177159405] [2020-07-20 13:55:45,849 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:55:46,109 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 13:55:46,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:55:46,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 13:55:46,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:55:46,198 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-07-20 13:55:46,200 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:46,208 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:46,209 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:55:46,209 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:8, output treesize:4 [2020-07-20 13:55:46,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:55:46,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:55:46,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177159405] [2020-07-20 13:55:46,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:55:46,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 13:55:46,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96056433] [2020-07-20 13:55:46,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 13:55:46,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:55:46,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 13:55:46,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 13:55:46,249 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 4 states. [2020-07-20 13:55:46,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:55:46,409 INFO L93 Difference]: Finished difference Result 104 states and 170 transitions. [2020-07-20 13:55:46,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 13:55:46,411 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-07-20 13:55:46,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:55:46,422 INFO L225 Difference]: With dead ends: 104 [2020-07-20 13:55:46,422 INFO L226 Difference]: Without dead ends: 49 [2020-07-20 13:55:46,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 13:55:46,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-07-20 13:55:46,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2020-07-20 13:55:46,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-20 13:55:46,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2020-07-20 13:55:46,473 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 10 [2020-07-20 13:55:46,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:55:46,474 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2020-07-20 13:55:46,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 13:55:46,474 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2020-07-20 13:55:46,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-20 13:55:46,475 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:55:46,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:55:46,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:55:46,691 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:55:46,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:55:46,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1890143313, now seen corresponding path program 1 times [2020-07-20 13:55:46,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:55:46,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572102740] [2020-07-20 13:55:46,693 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:55:47,806 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:55:47,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:55:47,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 13:55:47,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:55:47,822 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-20 13:55:47,823 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:47,829 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:47,829 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:55:47,829 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-07-20 13:55:47,846 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-07-20 13:55:47,847 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:47,851 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:47,852 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:55:47,852 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-20 13:55:47,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:55:47,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:55:47,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572102740] [2020-07-20 13:55:47,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:55:47,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 13:55:47,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253938831] [2020-07-20 13:55:47,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 13:55:47,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:55:47,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 13:55:47,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 13:55:47,863 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 4 states. [2020-07-20 13:55:47,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:55:47,931 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2020-07-20 13:55:47,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 13:55:47,931 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-07-20 13:55:47,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:55:47,933 INFO L225 Difference]: With dead ends: 43 [2020-07-20 13:55:47,933 INFO L226 Difference]: Without dead ends: 41 [2020-07-20 13:55:47,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 13:55:47,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-20 13:55:47,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-07-20 13:55:47,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-20 13:55:47,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-07-20 13:55:47,941 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 12 [2020-07-20 13:55:47,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:55:47,941 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-07-20 13:55:47,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 13:55:47,941 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-07-20 13:55:47,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-20 13:55:47,942 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:55:47,942 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:55:48,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:55:48,158 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:55:48,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:55:48,159 INFO L82 PathProgramCache]: Analyzing trace with hash 290038970, now seen corresponding path program 1 times [2020-07-20 13:55:48,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:55:48,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097474743] [2020-07-20 13:55:48,160 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:55:48,313 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 13:55:48,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:55:48,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 13:55:48,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:55:48,325 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-20 13:55:48,326 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:48,332 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:48,333 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:55:48,333 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-07-20 13:55:48,350 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-07-20 13:55:48,352 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:48,354 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:48,355 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:55:48,355 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-20 13:55:48,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:55:48,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:55:48,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097474743] [2020-07-20 13:55:48,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:55:48,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 13:55:48,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087364248] [2020-07-20 13:55:48,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 13:55:48,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:55:48,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 13:55:48,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 13:55:48,367 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 5 states. [2020-07-20 13:55:48,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:55:48,515 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2020-07-20 13:55:48,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 13:55:48,516 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-20 13:55:48,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:55:48,517 INFO L225 Difference]: With dead ends: 66 [2020-07-20 13:55:48,517 INFO L226 Difference]: Without dead ends: 64 [2020-07-20 13:55:48,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 13:55:48,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-07-20 13:55:48,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 48. [2020-07-20 13:55:48,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-07-20 13:55:48,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-07-20 13:55:48,527 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 14 [2020-07-20 13:55:48,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:55:48,528 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-07-20 13:55:48,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 13:55:48,548 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-07-20 13:55:48,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-20 13:55:48,549 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:55:48,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:55:48,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:55:48,770 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:55:48,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:55:48,771 INFO L82 PathProgramCache]: Analyzing trace with hash 2060721718, now seen corresponding path program 1 times [2020-07-20 13:55:48,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:55:48,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133332735] [2020-07-20 13:55:48,772 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:55:49,303 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 13:55:49,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:55:49,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 13:55:49,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:55:49,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:55:49,497 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2020-07-20 13:55:49,499 INFO L350 Elim1Store]: treesize reduction 106, result has 48.5 percent of original size [2020-07-20 13:55:49,500 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 107 [2020-07-20 13:55:49,501 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:49,667 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-07-20 13:55:49,669 INFO L624 ElimStorePlain]: treesize reduction 36, result has 80.1 percent of original size [2020-07-20 13:55:49,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:55:49,827 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2020-07-20 13:55:49,827 INFO L350 Elim1Store]: treesize reduction 115, result has 44.2 percent of original size [2020-07-20 13:55:49,828 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 98 [2020-07-20 13:55:49,829 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:49,963 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-07-20 13:55:49,964 INFO L624 ElimStorePlain]: treesize reduction 36, result has 78.6 percent of original size [2020-07-20 13:55:49,969 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-20 13:55:49,972 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-20 13:55:49,974 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-20 13:55:49,980 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-20 13:55:49,981 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-20 13:55:49,984 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-20 13:55:49,986 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-20 13:55:49,990 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-20 13:55:49,993 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-20 13:55:49,996 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-20 13:55:49,998 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-20 13:55:50,001 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-20 13:55:50,006 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-20 13:55:50,008 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-20 13:55:50,009 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-20 13:55:50,013 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-07-20 13:55:50,017 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-20 13:55:50,018 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-20 13:55:50,021 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-20 13:55:50,024 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-20 13:55:50,026 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-20 13:55:50,029 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-20 13:55:50,032 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-20 13:55:50,035 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-20 13:55:50,039 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-20 13:55:50,041 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-20 13:55:50,043 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-20 13:55:50,047 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-20 13:55:50,049 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-20 13:55:50,050 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:55:50,051 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:149, output treesize:15 [2020-07-20 13:55:50,075 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-20 13:55:50,076 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:50,085 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:50,088 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 [2020-07-20 13:55:50,088 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:50,092 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:50,093 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:55:50,093 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2020-07-20 13:55:50,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:55:50,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:55:50,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133332735] [2020-07-20 13:55:50,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:55:50,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 13:55:50,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514642709] [2020-07-20 13:55:50,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 13:55:50,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:55:50,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 13:55:50,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 13:55:50,117 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 4 states. [2020-07-20 13:55:50,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:55:50,225 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2020-07-20 13:55:50,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 13:55:50,226 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-07-20 13:55:50,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:55:50,227 INFO L225 Difference]: With dead ends: 48 [2020-07-20 13:55:50,227 INFO L226 Difference]: Without dead ends: 46 [2020-07-20 13:55:50,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 13:55:50,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-07-20 13:55:50,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-07-20 13:55:50,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-07-20 13:55:50,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-07-20 13:55:50,234 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 15 [2020-07-20 13:55:50,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:55:50,235 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-07-20 13:55:50,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 13:55:50,235 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-07-20 13:55:50,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 13:55:50,235 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:55:50,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:55:50,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:55:50,439 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:55:50,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:55:50,440 INFO L82 PathProgramCache]: Analyzing trace with hash 373775322, now seen corresponding path program 1 times [2020-07-20 13:55:50,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:55:50,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219899034] [2020-07-20 13:55:50,442 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:55:50,807 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 13:55:50,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:55:50,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-20 13:55:50,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:55:50,827 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-20 13:55:50,827 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2020-07-20 13:55:50,828 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:50,831 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:50,831 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:55:50,832 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:9, output treesize:11 [2020-07-20 13:55:50,912 INFO L350 Elim1Store]: treesize reduction 8, result has 87.3 percent of original size [2020-07-20 13:55:50,913 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 69 [2020-07-20 13:55:50,915 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:50,952 INFO L624 ElimStorePlain]: treesize reduction 28, result has 67.1 percent of original size [2020-07-20 13:55:50,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:55:50,957 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:50,969 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:50,970 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:55:50,971 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:55, output treesize:24 [2020-07-20 13:55:51,025 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:51,026 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2020-07-20 13:55:51,027 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:51,037 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:51,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:55:51,040 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:51,045 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:51,046 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:55:51,047 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:53, output treesize:4 [2020-07-20 13:55:51,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:55:51,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:55:51,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219899034] [2020-07-20 13:55:51,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:55:51,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 13:55:51,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151344156] [2020-07-20 13:55:51,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 13:55:51,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:55:51,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 13:55:51,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 13:55:51,055 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 5 states. [2020-07-20 13:55:51,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:55:51,122 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2020-07-20 13:55:51,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 13:55:51,127 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-20 13:55:51,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:55:51,128 INFO L225 Difference]: With dead ends: 46 [2020-07-20 13:55:51,128 INFO L226 Difference]: Without dead ends: 44 [2020-07-20 13:55:51,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 13:55:51,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-20 13:55:51,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-07-20 13:55:51,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-20 13:55:51,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-07-20 13:55:51,135 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 17 [2020-07-20 13:55:51,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:55:51,135 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-07-20 13:55:51,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 13:55:51,135 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-07-20 13:55:51,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-20 13:55:51,136 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:55:51,136 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:55:51,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:55:51,344 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:55:51,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:55:51,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1568846049, now seen corresponding path program 1 times [2020-07-20 13:55:51,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:55:51,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182965824] [2020-07-20 13:55:51,346 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:55:51,469 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 13:55:51,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:55:51,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 13:55:51,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:55:51,479 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-20 13:55:51,480 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:51,482 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:51,482 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:55:51,482 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-07-20 13:55:51,502 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-07-20 13:55:51,503 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:51,504 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:51,504 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:55:51,504 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-20 13:55:51,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:55:51,512 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:55:51,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182965824] [2020-07-20 13:55:51,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:55:51,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 13:55:51,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165482374] [2020-07-20 13:55:51,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 13:55:51,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:55:51,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 13:55:51,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 13:55:51,514 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 5 states. [2020-07-20 13:55:51,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:55:51,638 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2020-07-20 13:55:51,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 13:55:51,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-07-20 13:55:51,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:55:51,640 INFO L225 Difference]: With dead ends: 72 [2020-07-20 13:55:51,640 INFO L226 Difference]: Without dead ends: 60 [2020-07-20 13:55:51,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 13:55:51,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-20 13:55:51,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 47. [2020-07-20 13:55:51,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-20 13:55:51,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-07-20 13:55:51,647 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 18 [2020-07-20 13:55:51,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:55:51,647 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-07-20 13:55:51,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 13:55:51,647 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-07-20 13:55:51,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 13:55:51,648 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:55:51,648 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:55:51,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:55:51,853 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:55:51,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:55:51,854 INFO L82 PathProgramCache]: Analyzing trace with hash 777661568, now seen corresponding path program 1 times [2020-07-20 13:55:51,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:55:51,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123966845] [2020-07-20 13:55:51,855 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:55:51,980 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 13:55:51,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:55:51,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 13:55:51,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:55:52,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:55:52,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:55:52,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:55:52,010 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2020-07-20 13:55:52,010 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:52,024 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:52,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:55:52,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:55:52,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:55:52,047 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2020-07-20 13:55:52,048 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:52,059 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:52,059 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:55:52,060 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:55, output treesize:33 [2020-07-20 13:55:52,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:55:52,092 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2020-07-20 13:55:52,093 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:52,103 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:52,107 INFO L350 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2020-07-20 13:55:52,108 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2020-07-20 13:55:52,108 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:52,114 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:52,115 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:55:52,115 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:47, output treesize:7 [2020-07-20 13:55:52,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:55:52,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 13:55:52,170 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 13:55:52,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:55:52,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123966845] [2020-07-20 13:55:52,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 13:55:52,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-20 13:55:52,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725699148] [2020-07-20 13:55:52,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 13:55:52,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:55:52,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 13:55:52,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 13:55:52,195 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 7 states. [2020-07-20 13:55:52,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:55:52,471 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2020-07-20 13:55:52,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 13:55:52,471 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-07-20 13:55:52,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:55:52,472 INFO L225 Difference]: With dead ends: 61 [2020-07-20 13:55:52,472 INFO L226 Difference]: Without dead ends: 39 [2020-07-20 13:55:52,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-07-20 13:55:52,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-20 13:55:52,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-07-20 13:55:52,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-20 13:55:52,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-07-20 13:55:52,479 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 21 [2020-07-20 13:55:52,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:55:52,479 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-07-20 13:55:52,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 13:55:52,479 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-07-20 13:55:52,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 13:55:52,480 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:55:52,480 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:55:52,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:55:52,689 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:55:52,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:55:52,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1056872398, now seen corresponding path program 1 times [2020-07-20 13:55:52,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:55:52,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977615152] [2020-07-20 13:55:52,692 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:55:53,204 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 13:55:53,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:55:53,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 32 conjunts are in the unsatisfiable core [2020-07-20 13:55:53,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:55:53,225 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-20 13:55:53,226 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2020-07-20 13:55:53,226 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:53,236 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:53,239 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-20 13:55:53,240 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:53,248 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:53,250 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:55:53,250 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:26 [2020-07-20 13:55:53,313 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:53,313 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-07-20 13:55:53,315 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:53,387 INFO L624 ElimStorePlain]: treesize reduction 14, result has 88.6 percent of original size [2020-07-20 13:55:53,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:55:53,393 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:53,428 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:53,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:55:53,441 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 13:55:53,442 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:53,471 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:53,476 INFO L544 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:55:53,502 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:53,544 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:53,545 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 48 [2020-07-20 13:55:53,546 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:53,584 INFO L624 ElimStorePlain]: treesize reduction 20, result has 69.2 percent of original size [2020-07-20 13:55:53,587 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:55:53,588 INFO L244 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:111, output treesize:24 [2020-07-20 13:55:53,710 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:53,711 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2020-07-20 13:55:53,712 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:53,773 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:53,776 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.base_34|, |v_#memory_int_44|, |v_#memory_int_45|, |v_#memory_int_43|], 4=[|v_#memory_int_47|]} [2020-07-20 13:55:53,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:55:53,781 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:53,818 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:53,822 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:55:53,846 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:53,848 INFO L544 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:55:53,870 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:53,873 INFO L544 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:55:53,904 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:53,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:55:53,958 INFO L350 Elim1Store]: treesize reduction 65, result has 46.7 percent of original size [2020-07-20 13:55:53,959 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 85 [2020-07-20 13:55:53,960 INFO L544 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:54,022 INFO L624 ElimStorePlain]: treesize reduction 18, result has 80.9 percent of original size [2020-07-20 13:55:54,029 INFO L544 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, 5 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-07-20 13:55:54,030 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 11 variables, input treesize:246, output treesize:40 [2020-07-20 13:55:54,133 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13 [2020-07-20 13:55:54,134 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:54,140 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:54,141 INFO L544 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:55:54,141 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:49, output treesize:3 [2020-07-20 13:55:54,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:55:54,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 13:55:54,194 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.base_34|, |v_#memory_int_44|, |v_#memory_int_45|], 3=[|v_#memory_int_43|]} [2020-07-20 13:55:54,206 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:54,375 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2020-07-20 13:55:54,376 INFO L624 ElimStorePlain]: treesize reduction 78, result has 51.6 percent of original size [2020-07-20 13:55:54,380 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:55:54,401 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:54,404 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:55:54,422 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:54,431 INFO L544 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:55:54,449 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:54,450 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 4 dim-2 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2020-07-20 13:55:54,451 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 7 variables, input treesize:233, output treesize:60 [2020-07-20 13:55:54,533 INFO L440 ElimStorePlain]: Different costs {2=[|#memory_$Pointer$.base|, |v_#memory_int_41|, |v_#memory_int_42|], 7=[|v_#memory_int_49|]} [2020-07-20 13:55:54,545 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:54,999 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 68 [2020-07-20 13:55:55,000 INFO L624 ElimStorePlain]: treesize reduction 112, result has 51.9 percent of original size [2020-07-20 13:55:55,005 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:55:55,041 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:55,047 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:55:55,080 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:55,083 INFO L544 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:55:55,102 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:55,104 INFO L544 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 4 dim-2 vars, End of recursive call: 12 dim-0 vars, and 1 xjuncts. [2020-07-20 13:55:55,104 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 13 variables, input treesize:331, output treesize:117 [2020-07-20 13:55:57,282 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:57,283 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 32 [2020-07-20 13:55:57,283 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:57,287 INFO L624 ElimStorePlain]: treesize reduction 140, result has 0.7 percent of original size [2020-07-20 13:55:57,289 INFO L512 ElimStorePlain]: Eliminatee |v_#memory_int_40| vanished before elimination [2020-07-20 13:55:57,289 INFO L544 ElimStorePlain]: Start of recursive call 1: 16 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:55:57,290 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 18 variables, input treesize:153, output treesize:1 [2020-07-20 13:55:57,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:55:57,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977615152] [2020-07-20 13:55:57,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 13:55:57,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-07-20 13:55:57,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038045447] [2020-07-20 13:55:57,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 13:55:57,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:55:57,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 13:55:57,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=83, Unknown=1, NotChecked=0, Total=110 [2020-07-20 13:55:57,314 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 11 states. [2020-07-20 13:56:05,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:56:05,949 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2020-07-20 13:56:05,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 13:56:05,950 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-07-20 13:56:05,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:56:05,951 INFO L225 Difference]: With dead ends: 73 [2020-07-20 13:56:05,951 INFO L226 Difference]: Without dead ends: 71 [2020-07-20 13:56:05,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=70, Invalid=169, Unknown=1, NotChecked=0, Total=240 [2020-07-20 13:56:05,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-07-20 13:56:05,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 37. [2020-07-20 13:56:05,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-20 13:56:05,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2020-07-20 13:56:05,957 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 25 [2020-07-20 13:56:05,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:56:05,957 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2020-07-20 13:56:05,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 13:56:05,958 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-07-20 13:56:05,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-20 13:56:05,959 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:56:05,959 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:56:06,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:56:06,173 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:56:06,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:56:06,173 INFO L82 PathProgramCache]: Analyzing trace with hash 473692249, now seen corresponding path program 1 times [2020-07-20 13:56:06,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:56:06,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83063724] [2020-07-20 13:56:06,174 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:56:06,715 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 13:56:06,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:56:06,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 33 conjunts are in the unsatisfiable core [2020-07-20 13:56:06,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:56:06,738 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-20 13:56:06,739 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2020-07-20 13:56:06,739 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:06,749 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:06,754 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-20 13:56:06,754 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:06,764 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:06,765 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:06,765 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:26 [2020-07-20 13:56:06,821 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:06,822 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-07-20 13:56:06,823 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:06,903 INFO L624 ElimStorePlain]: treesize reduction 14, result has 88.6 percent of original size [2020-07-20 13:56:06,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:06,909 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:06,936 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:06,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:06,950 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 13:56:06,951 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:06,969 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:06,971 INFO L544 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:06,989 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:07,008 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:07,008 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 48 [2020-07-20 13:56:07,009 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:07,051 INFO L624 ElimStorePlain]: treesize reduction 20, result has 69.2 percent of original size [2020-07-20 13:56:07,052 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:56:07,052 INFO L244 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:111, output treesize:24 [2020-07-20 13:56:07,127 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:07,128 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2020-07-20 13:56:07,128 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:07,183 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:07,185 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.base_39|, |v_#memory_int_55|, |v_#memory_int_56|, |v_#memory_int_54|], 4=[|v_#memory_int_58|]} [2020-07-20 13:56:07,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:07,190 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:07,234 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:07,237 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:07,263 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:07,268 INFO L544 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:07,297 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:07,301 INFO L544 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:07,319 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:07,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:07,382 INFO L350 Elim1Store]: treesize reduction 65, result has 46.7 percent of original size [2020-07-20 13:56:07,382 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 85 [2020-07-20 13:56:07,383 INFO L544 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:07,450 INFO L624 ElimStorePlain]: treesize reduction 18, result has 80.9 percent of original size [2020-07-20 13:56:07,456 INFO L544 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, 5 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:07,457 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 11 variables, input treesize:246, output treesize:40 [2020-07-20 13:56:07,569 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13 [2020-07-20 13:56:07,570 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:07,581 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:07,581 INFO L544 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:56:07,582 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:49, output treesize:3 [2020-07-20 13:56:07,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:56:07,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 13:56:07,668 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.base_39|, |v_#memory_int_55|, |v_#memory_int_56|], 3=[|v_#memory_int_54|]} [2020-07-20 13:56:07,679 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:08,054 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2020-07-20 13:56:08,055 INFO L624 ElimStorePlain]: treesize reduction 80, result has 51.5 percent of original size [2020-07-20 13:56:08,060 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:08,106 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:08,110 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:08,142 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:08,145 INFO L544 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:08,164 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:08,165 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 4 dim-2 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:08,166 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 7 variables, input treesize:235, output treesize:62 [2020-07-20 13:56:08,248 INFO L440 ElimStorePlain]: Different costs {2=[|#memory_$Pointer$.base|, |v_#memory_int_52|, |v_#memory_int_53|], 7=[|v_#memory_int_60|]} [2020-07-20 13:56:08,258 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:08,745 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2020-07-20 13:56:08,746 INFO L624 ElimStorePlain]: treesize reduction 114, result has 51.9 percent of original size [2020-07-20 13:56:08,751 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:08,797 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:08,802 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:08,843 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:08,846 INFO L544 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:08,872 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:08,875 INFO L544 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 4 dim-2 vars, End of recursive call: 12 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:08,875 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 13 variables, input treesize:333, output treesize:119 [2020-07-20 13:56:11,006 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:11,006 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 32 [2020-07-20 13:56:11,007 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:11,010 INFO L624 ElimStorePlain]: treesize reduction 142, result has 0.7 percent of original size [2020-07-20 13:56:11,013 INFO L512 ElimStorePlain]: Eliminatee |v_#memory_int_51| vanished before elimination [2020-07-20 13:56:11,014 INFO L544 ElimStorePlain]: Start of recursive call 1: 16 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:56:11,014 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 18 variables, input treesize:155, output treesize:1 [2020-07-20 13:56:11,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:56:11,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83063724] [2020-07-20 13:56:11,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 13:56:11,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-07-20 13:56:11,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523990435] [2020-07-20 13:56:11,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 13:56:11,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:56:11,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 13:56:11,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=83, Unknown=1, NotChecked=0, Total=110 [2020-07-20 13:56:11,024 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 11 states. [2020-07-20 13:56:21,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:56:21,623 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2020-07-20 13:56:21,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 13:56:21,624 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-07-20 13:56:21,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:56:21,625 INFO L225 Difference]: With dead ends: 83 [2020-07-20 13:56:21,625 INFO L226 Difference]: Without dead ends: 71 [2020-07-20 13:56:21,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=70, Invalid=169, Unknown=1, NotChecked=0, Total=240 [2020-07-20 13:56:21,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-07-20 13:56:21,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 39. [2020-07-20 13:56:21,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-20 13:56:21,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-07-20 13:56:21,632 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 29 [2020-07-20 13:56:21,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:56:21,632 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-07-20 13:56:21,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 13:56:21,633 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-07-20 13:56:21,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-20 13:56:21,633 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:56:21,634 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:56:21,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:56:21,835 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:56:21,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:56:21,835 INFO L82 PathProgramCache]: Analyzing trace with hash -377613816, now seen corresponding path program 1 times [2020-07-20 13:56:21,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:56:21,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588034157] [2020-07-20 13:56:21,836 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:56:22,557 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:56:22,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:56:22,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 51 conjunts are in the unsatisfiable core [2020-07-20 13:56:22,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:56:22,581 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-20 13:56:22,594 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2020-07-20 13:56:22,595 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:22,613 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:22,614 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:22,614 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:23 [2020-07-20 13:56:22,672 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:22,672 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-07-20 13:56:22,673 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:22,796 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-07-20 13:56:22,797 INFO L624 ElimStorePlain]: treesize reduction 14, result has 93.5 percent of original size [2020-07-20 13:56:22,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:22,813 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:22,826 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:22,826 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 41 [2020-07-20 13:56:22,827 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:22,893 INFO L624 ElimStorePlain]: treesize reduction 16, result has 89.4 percent of original size [2020-07-20 13:56:22,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:22,916 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:22,916 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 41 [2020-07-20 13:56:22,916 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:22,974 INFO L624 ElimStorePlain]: treesize reduction 16, result has 81.2 percent of original size [2020-07-20 13:56:22,975 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:56:22,975 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:203, output treesize:82 [2020-07-20 13:56:23,065 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:23,066 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 30 [2020-07-20 13:56:23,066 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:23,263 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-07-20 13:56:23,264 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:23,266 INFO L440 ElimStorePlain]: Different costs {6=[|v_#memory_$Pointer$.base_46|, |v_#memory_$Pointer$.offset_40|], 11=[|v_#memory_$Pointer$.offset_38|, |v_#memory_$Pointer$.base_44|]} [2020-07-20 13:56:23,276 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:23,277 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 433 treesize of output 289 [2020-07-20 13:56:23,279 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:23,609 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-07-20 13:56:23,609 INFO L624 ElimStorePlain]: treesize reduction 16, result has 96.4 percent of original size [2020-07-20 13:56:23,644 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 39 [2020-07-20 13:56:23,645 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:23,838 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-07-20 13:56:23,839 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:23,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:23,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:23,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:23,855 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:56:23,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:23,905 INFO L350 Elim1Store]: treesize reduction 5, result has 90.7 percent of original size [2020-07-20 13:56:23,906 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 97 [2020-07-20 13:56:23,907 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:24,041 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-07-20 13:56:24,042 INFO L624 ElimStorePlain]: treesize reduction 41, result has 86.4 percent of original size [2020-07-20 13:56:24,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:24,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:24,096 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:24,097 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 174 treesize of output 144 [2020-07-20 13:56:24,099 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:24,230 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45 [2020-07-20 13:56:24,231 INFO L624 ElimStorePlain]: treesize reduction 134, result has 42.7 percent of original size [2020-07-20 13:56:24,232 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:56:24,235 INFO L244 ElimStorePlain]: Needed 6 recursive calls to eliminate 6 variables, input treesize:457, output treesize:97 [2020-07-20 13:56:24,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:24,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:24,397 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 19 [2020-07-20 13:56:24,397 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:24,417 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:24,419 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:24,419 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:135, output treesize:72 [2020-07-20 13:56:24,520 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:24,520 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 14 case distinctions, treesize of input 69 treesize of output 82 [2020-07-20 13:56:24,522 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-20 13:56:24,522 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 13:56:24,523 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 13:56:24,523 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 13:56:24,526 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 13:56:24,527 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-20 13:56:24,529 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 13:56:24,531 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 13:56:24,533 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-20 13:56:24,534 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 13:56:24,534 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 13:56:24,535 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:24,539 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:24,539 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:56:24,539 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:73, output treesize:4 [2020-07-20 13:56:24,572 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:56:24,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 13:56:24,670 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 13:56:24,673 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 13:56:24,676 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 13:56:24,683 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.offset_41|], 6=[|v_#memory_$Pointer$.base_47|], 20=[|v_#memory_$Pointer$.offset_38|, |v_#memory_$Pointer$.base_44|]} [2020-07-20 13:56:24,697 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:24,709 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:25,048 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-07-20 13:56:25,048 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:25,057 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:25,068 INFO L544 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:25,322 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-07-20 13:56:25,322 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:25,340 INFO L544 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:25,354 INFO L544 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:25,983 WARN L193 SmtUtils]: Spent 628.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-07-20 13:56:25,984 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:26,005 INFO L544 ElimStorePlain]: Start of recursive call 8: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:26,016 INFO L544 ElimStorePlain]: Start of recursive call 9: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:56:26,366 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-07-20 13:56:26,366 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:26,368 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 4 dim-2 vars, End of recursive call: 10 dim-0 vars, and 2 xjuncts. [2020-07-20 13:56:26,369 INFO L244 ElimStorePlain]: Needed 9 recursive calls to eliminate 5 variables, input treesize:1145, output treesize:1527 [2020-07-20 13:56:27,533 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-07-20 13:56:27,542 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 13:56:27,557 INFO L440 ElimStorePlain]: Different costs {36=[|#memory_$Pointer$.offset|], 66=[|#memory_$Pointer$.base|]} [2020-07-20 13:56:56,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:56:56,851 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:57:00,609 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 13:57:03,674 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 89679482533084727 treesize of output 89678932777270839