/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 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 13:42:36,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 13:42:36,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 13:42:36,086 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 13:42:36,087 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 13:42:36,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 13:42:36,091 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 13:42:36,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 13:42:36,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 13:42:36,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 13:42:36,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 13:42:36,109 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 13:42:36,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 13:42:36,111 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 13:42:36,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 13:42:36,116 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 13:42:36,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 13:42:36,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 13:42:36,121 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 13:42:36,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 13:42:36,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 13:42:36,130 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 13:42:36,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 13:42:36,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 13:42:36,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 13:42:36,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 13:42:36,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 13:42:36,138 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 13:42:36,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 13:42:36,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 13:42:36,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 13:42:36,142 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 13:42:36,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 13:42:36,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 13:42:36,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 13:42:36,146 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 13:42:36,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 13:42:36,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 13:42:36,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 13:42:36,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 13:42:36,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 13:42:36,150 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 13:42:36,171 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 13:42:36,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 13:42:36,173 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 13:42:36,173 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 13:42:36,174 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 13:42:36,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 13:42:36,174 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 13:42:36,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 13:42:36,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 13:42:36,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 13:42:36,176 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 13:42:36,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 13:42:36,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 13:42:36,177 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 13:42:36,177 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 13:42:36,177 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 13:42:36,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 13:42:36,178 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 13:42:36,178 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 13:42:36,178 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 13:42:36,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 13:42:36,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 13:42:36,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 13:42:36,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 13:42:36,179 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 13:42:36,179 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 13:42:36,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:42:36,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 13:42:36,180 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 13:42:36,180 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 -> 2 [2020-07-21 13:42:36,440 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 13:42:36,453 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 13:42:36,456 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 13:42:36,458 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 13:42:36,458 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 13:42:36,459 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-07-21 13:42:36,533 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d36bcfd04/3360f4b37d0d4b8dbcec2afcc71cdfc5/FLAG649598b16 [2020-07-21 13:42:37,042 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 13:42:37,043 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-07-21 13:42:37,056 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d36bcfd04/3360f4b37d0d4b8dbcec2afcc71cdfc5/FLAG649598b16 [2020-07-21 13:42:37,352 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d36bcfd04/3360f4b37d0d4b8dbcec2afcc71cdfc5 [2020-07-21 13:42:37,360 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 13:42:37,362 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 13:42:37,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 13:42:37,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 13:42:37,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 13:42:37,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:42:37" (1/1) ... [2020-07-21 13:42:37,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e50e1b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:42:37, skipping insertion in model container [2020-07-21 13:42:37,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:42:37" (1/1) ... [2020-07-21 13:42:37,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 13:42:37,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 13:42:37,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 13:42:37,849 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 13:42:37,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 13:42:37,987 INFO L208 MainTranslator]: Completed translation [2020-07-21 13:42:37,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:42:37 WrapperNode [2020-07-21 13:42:37,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 13:42:37,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 13:42:37,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 13:42:37,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 13:42:38,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:42:37" (1/1) ... [2020-07-21 13:42:38,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:42:37" (1/1) ... [2020-07-21 13:42:38,041 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:42:37" (1/1) ... [2020-07-21 13:42:38,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:42:37" (1/1) ... [2020-07-21 13:42:38,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:42:37" (1/1) ... [2020-07-21 13:42:38,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:42:37" (1/1) ... [2020-07-21 13:42:38,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:42:37" (1/1) ... [2020-07-21 13:42:38,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 13:42:38,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 13:42:38,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 13:42:38,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 13:42:38,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:42:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 13:42:38,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 13:42:38,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 13:42:38,166 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 13:42:38,166 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-21 13:42:38,167 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-21 13:42:38,167 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-21 13:42:38,168 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-21 13:42:38,168 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-21 13:42:38,168 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-21 13:42:38,168 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-21 13:42:38,169 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-21 13:42:38,169 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-21 13:42:38,170 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-21 13:42:38,170 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-21 13:42:38,170 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-21 13:42:38,171 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-21 13:42:38,171 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-21 13:42:38,171 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-21 13:42:38,171 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-21 13:42:38,171 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-21 13:42:38,171 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-21 13:42:38,172 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-21 13:42:38,172 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-21 13:42:38,172 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-21 13:42:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-21 13:42:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-21 13:42:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-21 13:42:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-21 13:42:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-21 13:42:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-21 13:42:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-21 13:42:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-21 13:42:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-21 13:42:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-21 13:42:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-21 13:42:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-21 13:42:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-21 13:42:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-21 13:42:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-21 13:42:38,176 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-21 13:42:38,176 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-21 13:42:38,176 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-21 13:42:38,176 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-21 13:42:38,176 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-21 13:42:38,176 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-21 13:42:38,176 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-21 13:42:38,177 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-21 13:42:38,178 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-21 13:42:38,178 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-21 13:42:38,178 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-21 13:42:38,178 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-21 13:42:38,178 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-21 13:42:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-21 13:42:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 13:42:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-21 13:42:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-21 13:42:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 13:42:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-21 13:42:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-21 13:42:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-21 13:42:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-21 13:42:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-21 13:42:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 13:42:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-21 13:42:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-21 13:42:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-21 13:42:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 13:42:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-21 13:42:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-21 13:42:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-21 13:42:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-21 13:42:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-21 13:42:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-21 13:42:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-21 13:42:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-21 13:42:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-21 13:42:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-21 13:42:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-21 13:42:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-21 13:42:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-21 13:42:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-21 13:42:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-21 13:42:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-21 13:42:38,185 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-21 13:42:38,185 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-21 13:42:38,185 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-21 13:42:38,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-21 13:42:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-21 13:42:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-21 13:42:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-21 13:42:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-21 13:42:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-21 13:42:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-21 13:42:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-21 13:42:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-21 13:42:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-21 13:42:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-21 13:42:38,187 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-21 13:42:38,187 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-21 13:42:38,187 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-21 13:42:38,187 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-21 13:42:38,187 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-21 13:42:38,187 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-21 13:42:38,187 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-21 13:42:38,187 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-21 13:42:38,187 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-21 13:42:38,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 13:42:38,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 13:42:38,188 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 13:42:38,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 13:42:38,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 13:42:38,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 13:42:38,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 13:42:38,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 13:42:38,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 13:42:38,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 13:42:38,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 13:42:38,724 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 13:42:38,725 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-07-21 13:42:38,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:42:38 BoogieIcfgContainer [2020-07-21 13:42:38,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 13:42:38,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 13:42:38,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 13:42:38,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 13:42:38,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:42:37" (1/3) ... [2020-07-21 13:42:38,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fb47219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:42:38, skipping insertion in model container [2020-07-21 13:42:38,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:42:37" (2/3) ... [2020-07-21 13:42:38,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fb47219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:42:38, skipping insertion in model container [2020-07-21 13:42:38,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:42:38" (3/3) ... [2020-07-21 13:42:38,736 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2020-07-21 13:42:38,746 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 13:42:38,754 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-07-21 13:42:38,767 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-07-21 13:42:38,788 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 13:42:38,789 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 13:42:38,789 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 13:42:38,789 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 13:42:38,789 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 13:42:38,789 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 13:42:38,789 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 13:42:38,790 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 13:42:38,808 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-07-21 13:42:38,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 13:42:38,814 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:42:38,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:42:38,815 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:42:38,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:42:38,821 INFO L82 PathProgramCache]: Analyzing trace with hash -742552803, now seen corresponding path program 1 times [2020-07-21 13:42:38,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:42:38,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63457097] [2020-07-21 13:42:38,830 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:42:39,007 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 13:42:39,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:42:39,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 13:42:39,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:42:39,084 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-07-21 13:42:39,087 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:39,098 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:39,098 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:42:39,098 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:8, output treesize:4 [2020-07-21 13:42:39,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:42:39,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:42:39,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63457097] [2020-07-21 13:42:39,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:42:39,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 13:42:39,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719078891] [2020-07-21 13:42:39,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 13:42:39,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:42:39,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 13:42:39,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 13:42:39,140 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 4 states. [2020-07-21 13:42:39,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:42:39,240 INFO L93 Difference]: Finished difference Result 73 states and 118 transitions. [2020-07-21 13:42:39,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 13:42:39,242 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-07-21 13:42:39,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:42:39,252 INFO L225 Difference]: With dead ends: 73 [2020-07-21 13:42:39,252 INFO L226 Difference]: Without dead ends: 35 [2020-07-21 13:42:39,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 13:42:39,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-21 13:42:39,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2020-07-21 13:42:39,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-21 13:42:39,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-07-21 13:42:39,295 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 10 [2020-07-21 13:42:39,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:42:39,296 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-07-21 13:42:39,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 13:42:39,296 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-07-21 13:42:39,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 13:42:39,297 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:42:39,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:42:39,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:42:39,511 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:42:39,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:42:39,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1973625457, now seen corresponding path program 1 times [2020-07-21 13:42:39,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:42:39,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099244574] [2020-07-21 13:42:39,514 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:42:39,616 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 13:42:39,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:42:39,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 13:42:39,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:42:39,631 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-21 13:42:39,631 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:39,633 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:39,634 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:42:39,634 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-07-21 13:42:39,658 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-07-21 13:42:39,659 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:39,661 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:39,661 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:42:39,661 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-21 13:42:39,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:42:39,668 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:42:39,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099244574] [2020-07-21 13:42:39,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:42:39,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 13:42:39,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12014525] [2020-07-21 13:42:39,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 13:42:39,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:42:39,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 13:42:39,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 13:42:39,672 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 5 states. [2020-07-21 13:42:39,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:42:39,763 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-07-21 13:42:39,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 13:42:39,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-21 13:42:39,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:42:39,765 INFO L225 Difference]: With dead ends: 54 [2020-07-21 13:42:39,765 INFO L226 Difference]: Without dead ends: 52 [2020-07-21 13:42:39,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 13:42:39,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-07-21 13:42:39,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 36. [2020-07-21 13:42:39,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-21 13:42:39,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-07-21 13:42:39,774 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 14 [2020-07-21 13:42:39,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:42:39,775 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-07-21 13:42:39,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 13:42:39,775 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-07-21 13:42:39,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-21 13:42:39,776 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:42:39,776 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:42:39,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:42:39,990 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:42:39,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:42:39,991 INFO L82 PathProgramCache]: Analyzing trace with hash -954667545, now seen corresponding path program 1 times [2020-07-21 13:42:39,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:42:39,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2008411064] [2020-07-21 13:42:39,992 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:42:40,231 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:42:40,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:42:40,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 28 conjunts are in the unsatisfiable core [2020-07-21 13:42:40,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:42:40,264 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-21 13:42:40,264 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2020-07-21 13:42:40,265 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:40,279 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:40,284 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-21 13:42:40,284 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:40,304 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:40,305 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 13:42:40,305 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:26 [2020-07-21 13:42:40,363 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:40,363 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-07-21 13:42:40,365 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:40,410 INFO L624 ElimStorePlain]: treesize reduction 14, result has 80.3 percent of original size [2020-07-21 13:42:40,434 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 13:42:40,460 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:40,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 13:42:40,467 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 20 [2020-07-21 13:42:40,468 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:40,481 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:40,482 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:42:40,483 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:59, output treesize:24 [2020-07-21 13:42:40,543 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:40,544 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2020-07-21 13:42:40,545 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:40,574 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:40,576 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_30|, |v_#memory_int_31|], 4=[|v_#memory_int_33|]} [2020-07-21 13:42:40,580 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 13:42:40,598 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:40,601 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 13:42:40,618 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:40,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 13:42:40,643 INFO L350 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2020-07-21 13:42:40,644 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 45 [2020-07-21 13:42:40,645 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:40,661 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:40,665 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-07-21 13:42:40,666 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:77, output treesize:40 [2020-07-21 13:42:40,743 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13 [2020-07-21 13:42:40,744 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:40,753 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:40,754 INFO L544 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:42:40,755 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:49, output treesize:3 [2020-07-21 13:42:40,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:42:40,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 13:42:40,808 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_31|], 3=[|v_#memory_int_30|]} [2020-07-21 13:42:40,812 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 13:42:40,827 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:40,830 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 13:42:40,842 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:40,844 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-07-21 13:42:40,844 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:63, output treesize:55 [2020-07-21 13:42:40,884 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_29|], 6=[|v_#memory_int_35|]} [2020-07-21 13:42:40,889 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 13:42:40,910 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:40,913 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 13:42:40,931 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:40,934 INFO L544 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-2 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2020-07-21 13:42:40,934 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:96, output treesize:102 [2020-07-21 13:42:43,086 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:43,088 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 32 [2020-07-21 13:42:43,089 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:43,101 INFO L624 ElimStorePlain]: treesize reduction 125, result has 0.8 percent of original size [2020-07-21 13:42:43,102 INFO L512 ElimStorePlain]: Eliminatee |v_#memory_int_28| vanished before elimination [2020-07-21 13:42:43,102 INFO L544 ElimStorePlain]: Start of recursive call 1: 12 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:42:43,103 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 14 variables, input treesize:138, output treesize:1 [2020-07-21 13:42:43,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:42:43,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2008411064] [2020-07-21 13:42:43,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 13:42:43,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-07-21 13:42:43,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779837010] [2020-07-21 13:42:43,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 13:42:43,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:42:43,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 13:42:43,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=83, Unknown=1, NotChecked=0, Total=110 [2020-07-21 13:42:43,111 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 11 states. [2020-07-21 13:42:49,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:42:49,720 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2020-07-21 13:42:49,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 13:42:49,720 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2020-07-21 13:42:49,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:42:49,721 INFO L225 Difference]: With dead ends: 62 [2020-07-21 13:42:49,722 INFO L226 Difference]: Without dead ends: 60 [2020-07-21 13:42:49,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=78, Invalid=193, Unknown=1, NotChecked=0, Total=272 [2020-07-21 13:42:49,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-21 13:42:49,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 27. [2020-07-21 13:42:49,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-21 13:42:49,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-07-21 13:42:49,729 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2020-07-21 13:42:49,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:42:49,730 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-07-21 13:42:49,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 13:42:49,730 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-07-21 13:42:49,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-21 13:42:49,731 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:42:49,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:42:49,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:42:49,933 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:42:49,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:42:49,934 INFO L82 PathProgramCache]: Analyzing trace with hash 903516662, now seen corresponding path program 1 times [2020-07-21 13:42:49,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:42:49,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056700248] [2020-07-21 13:42:49,935 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:42:50,031 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 13:42:50,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:42:50,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 13:42:50,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:42:50,040 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-21 13:42:50,040 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:50,042 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:50,043 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:42:50,043 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-07-21 13:42:50,061 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-07-21 13:42:50,061 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:50,068 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:50,068 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:42:50,068 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-21 13:42:50,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:42:50,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:42:50,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056700248] [2020-07-21 13:42:50,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:42:50,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 13:42:50,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595094475] [2020-07-21 13:42:50,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 13:42:50,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:42:50,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 13:42:50,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 13:42:50,082 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 5 states. [2020-07-21 13:42:50,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:42:50,170 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-07-21 13:42:50,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 13:42:50,171 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-07-21 13:42:50,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:42:50,172 INFO L225 Difference]: With dead ends: 62 [2020-07-21 13:42:50,172 INFO L226 Difference]: Without dead ends: 50 [2020-07-21 13:42:50,172 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 [2020-07-21 13:42:50,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-07-21 13:42:50,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 37. [2020-07-21 13:42:50,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-21 13:42:50,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-07-21 13:42:50,187 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 18 [2020-07-21 13:42:50,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:42:50,187 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-07-21 13:42:50,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 13:42:50,187 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-07-21 13:42:50,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-21 13:42:50,188 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:42:50,188 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:42:50,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:42:50,404 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:42:50,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:42:50,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1223911862, now seen corresponding path program 1 times [2020-07-21 13:42:50,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:42:50,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819234939] [2020-07-21 13:42:50,406 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:42:50,504 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 13:42:50,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:42:50,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 13:42:50,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:42:50,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 13:42:50,595 INFO L350 Elim1Store]: treesize reduction 33, result has 55.4 percent of original size [2020-07-21 13:42:50,596 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 48 [2020-07-21 13:42:50,596 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:50,657 INFO L624 ElimStorePlain]: treesize reduction 16, result has 81.4 percent of original size [2020-07-21 13:42:50,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 13:42:50,725 INFO L350 Elim1Store]: treesize reduction 33, result has 55.4 percent of original size [2020-07-21 13:42:50,726 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 48 [2020-07-21 13:42:50,727 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:50,794 INFO L624 ElimStorePlain]: treesize reduction 16, result has 79.7 percent of original size [2020-07-21 13:42:50,795 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:42:50,795 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:77, output treesize:63 [2020-07-21 13:42:50,881 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 13:42:50,885 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 13:42:50,894 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-07-21 13:42:50,895 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:50,900 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-21 13:42:50,900 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:50,922 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:50,922 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2020-07-21 13:42:50,923 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:50,979 INFO L624 ElimStorePlain]: treesize reduction 12, result has 84.6 percent of original size [2020-07-21 13:42:50,983 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-21 13:42:50,983 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:50,993 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-07-21 13:42:50,994 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:51,002 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:51,003 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2020-07-21 13:42:51,003 INFO L544 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:51,016 INFO L624 ElimStorePlain]: treesize reduction 20, result has 25.9 percent of original size [2020-07-21 13:42:51,017 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:42:51,017 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 4 variables, input treesize:110, output treesize:7 [2020-07-21 13:42:51,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:42:51,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 13:42:51,061 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:42:51,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:42:51,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819234939] [2020-07-21 13:42:51,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 13:42:51,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 13:42:51,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432457167] [2020-07-21 13:42:51,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 13:42:51,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:42:51,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 13:42:51,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-21 13:42:51,075 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 7 states. [2020-07-21 13:42:51,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:42:51,316 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-07-21 13:42:51,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 13:42:51,316 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-07-21 13:42:51,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:42:51,317 INFO L225 Difference]: With dead ends: 51 [2020-07-21 13:42:51,317 INFO L226 Difference]: Without dead ends: 29 [2020-07-21 13:42:51,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-07-21 13:42:51,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-21 13:42:51,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-07-21 13:42:51,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-21 13:42:51,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-07-21 13:42:51,323 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 21 [2020-07-21 13:42:51,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:42:51,324 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-07-21 13:42:51,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 13:42:51,324 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-07-21 13:42:51,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-21 13:42:51,325 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:42:51,325 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:42:51,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:42:51,532 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:42:51,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:42:51,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1696156082, now seen corresponding path program 1 times [2020-07-21 13:42:51,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:42:51,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286824657] [2020-07-21 13:42:51,535 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:42:51,642 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 13:42:51,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:42:51,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 27 conjunts are in the unsatisfiable core [2020-07-21 13:42:51,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:42:51,685 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-21 13:42:51,686 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2020-07-21 13:42:51,686 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:51,697 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:51,701 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-21 13:42:51,702 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:51,711 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:51,712 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 13:42:51,712 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:26 [2020-07-21 13:42:51,762 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:51,763 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-07-21 13:42:51,764 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:51,813 INFO L624 ElimStorePlain]: treesize reduction 14, result has 80.3 percent of original size [2020-07-21 13:42:51,817 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 13:42:51,836 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:51,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 13:42:51,842 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 20 [2020-07-21 13:42:51,843 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:51,854 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:51,855 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:42:51,856 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:59, output treesize:24 [2020-07-21 13:42:51,900 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:51,900 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2020-07-21 13:42:51,901 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:51,926 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:51,928 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_41|, |v_#memory_int_42|], 4=[|v_#memory_int_44|]} [2020-07-21 13:42:51,931 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 13:42:51,951 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:51,953 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 13:42:51,968 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:51,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 13:42:52,002 INFO L350 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2020-07-21 13:42:52,003 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 45 [2020-07-21 13:42:52,004 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:52,022 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:52,026 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-07-21 13:42:52,026 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:77, output treesize:40 [2020-07-21 13:42:52,131 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13 [2020-07-21 13:42:52,132 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:52,147 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:52,148 INFO L544 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:42:52,148 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:49, output treesize:3 [2020-07-21 13:42:52,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:42:52,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 13:42:52,208 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_42|], 3=[|v_#memory_int_41|]} [2020-07-21 13:42:52,211 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 13:42:52,226 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:52,228 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 13:42:52,240 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:52,241 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-07-21 13:42:52,241 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:65, output treesize:57 [2020-07-21 13:42:52,302 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_40|], 6=[|v_#memory_int_46|]} [2020-07-21 13:42:52,305 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 13:42:52,332 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:52,334 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 13:42:52,353 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:52,354 INFO L544 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-2 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2020-07-21 13:42:52,355 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:98, output treesize:104 [2020-07-21 13:42:54,478 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:54,478 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 32 [2020-07-21 13:42:54,479 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:54,482 INFO L624 ElimStorePlain]: treesize reduction 127, result has 0.8 percent of original size [2020-07-21 13:42:54,483 INFO L512 ElimStorePlain]: Eliminatee |v_#memory_int_39| vanished before elimination [2020-07-21 13:42:54,484 INFO L544 ElimStorePlain]: Start of recursive call 1: 12 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:42:54,484 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 14 variables, input treesize:140, output treesize:1 [2020-07-21 13:42:54,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:42:54,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286824657] [2020-07-21 13:42:54,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 13:42:54,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-07-21 13:42:54,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679030929] [2020-07-21 13:42:54,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 13:42:54,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:42:54,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 13:42:54,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=83, Unknown=1, NotChecked=0, Total=110 [2020-07-21 13:42:54,492 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 11 states. [2020-07-21 13:43:02,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:43:02,958 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2020-07-21 13:43:02,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 13:43:02,958 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-07-21 13:43:02,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:43:02,960 INFO L225 Difference]: With dead ends: 67 [2020-07-21 13:43:02,961 INFO L226 Difference]: Without dead ends: 55 [2020-07-21 13:43:02,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=70, Invalid=169, Unknown=1, NotChecked=0, Total=240 [2020-07-21 13:43:02,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-07-21 13:43:02,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 31. [2020-07-21 13:43:02,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-21 13:43:02,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-07-21 13:43:02,972 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 21 [2020-07-21 13:43:02,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:43:02,972 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-07-21 13:43:02,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 13:43:02,972 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-07-21 13:43:02,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 13:43:02,973 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:43:02,973 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:43:03,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:43:03,188 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:43:03,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:43:03,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1223476830, now seen corresponding path program 1 times [2020-07-21 13:43:03,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:43:03,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116770636] [2020-07-21 13:43:03,190 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:43:03,395 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:43:03,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:43:03,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 44 conjunts are in the unsatisfiable core [2020-07-21 13:43:03,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:43:03,424 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-21 13:43:03,425 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2020-07-21 13:43:03,425 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:43:03,436 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:43:03,437 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:43:03,437 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:20 [2020-07-21 13:43:03,531 INFO L350 Elim1Store]: treesize reduction 8, result has 87.3 percent of original size [2020-07-21 13:43:03,532 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 [2020-07-21 13:43:03,533 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:43:03,595 INFO L624 ElimStorePlain]: treesize reduction 28, result has 74.3 percent of original size [2020-07-21 13:43:03,602 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 0 case distinctions, treesize of input 27 treesize of output 15 [2020-07-21 13:43:03,603 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 13:43:03,626 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:43:03,643 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 0 case distinctions, treesize of input 27 treesize of output 15 [2020-07-21 13:43:03,644 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 13:43:03,669 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:43:03,669 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:43:03,670 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:79, output treesize:55 [2020-07-21 13:43:03,779 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:43:03,779 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 25 treesize of output 49 [2020-07-21 13:43:03,780 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:43:03,851 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:43:03,916 INFO L350 Elim1Store]: treesize reduction 66, result has 49.6 percent of original size [2020-07-21 13:43:03,917 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 257 treesize of output 236 [2020-07-21 13:43:03,920 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[10, 3, 2, 1] term [2020-07-21 13:43:03,920 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-07-21 13:43:03,921 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 13:43:04,021 INFO L624 ElimStorePlain]: treesize reduction 40, result has 85.0 percent of original size [2020-07-21 13:43:04,023 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 13:43:04,066 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:43:04,102 INFO L350 Elim1Store]: treesize reduction 26, result has 60.0 percent of original size [2020-07-21 13:43:04,102 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 173 treesize of output 133 [2020-07-21 13:43:04,104 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-21 13:43:04,178 INFO L624 ElimStorePlain]: treesize reduction 46, result has 76.4 percent of original size [2020-07-21 13:43:04,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 13:43:04,292 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-07-21 13:43:04,293 INFO L350 Elim1Store]: treesize reduction 45, result has 72.0 percent of original size [2020-07-21 13:43:04,294 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 134 treesize of output 165 [2020-07-21 13:43:04,295 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[10, 3, 2, 1] term [2020-07-21 13:43:04,296 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-07-21 13:43:04,297 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-07-21 13:43:04,357 INFO L624 ElimStorePlain]: treesize reduction 113, result has 45.4 percent of original size [2020-07-21 13:43:04,359 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 4 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 13:43:04,359 INFO L244 ElimStorePlain]: Needed 6 recursive calls to eliminate 7 variables, input treesize:273, output treesize:122 [2020-07-21 13:43:04,450 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:43:04,450 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 113 treesize of output 107 [2020-07-21 13:43:04,451 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:43:04,483 INFO L624 ElimStorePlain]: treesize reduction 20, result has 79.8 percent of original size [2020-07-21 13:43:04,484 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-07-21 13:43:04,484 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:136, output treesize:79 [2020-07-21 13:43:04,871 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:43:04,872 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 69 [2020-07-21 13:43:04,874 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-07-21 13:43:04,874 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-07-21 13:43:04,875 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-07-21 13:43:04,875 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:43:04,886 INFO L624 ElimStorePlain]: treesize reduction 23, result has 28.1 percent of original size [2020-07-21 13:43:04,886 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:43:04,887 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:83, output treesize:4 [2020-07-21 13:43:04,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:43:04,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 13:43:04,964 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.offset_35|], 6=[|v_#memory_$Pointer$.base_35|, |v_#memory_$Pointer$.offset_32|, |v_#memory_$Pointer$.base_32|]} [2020-07-21 13:43:04,971 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 13:43:05,008 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:43:05,011 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 13:43:05,050 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:43:05,052 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 13:43:05,076 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:43:05,078 INFO L544 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 13:43:05,097 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:43:05,098 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 4 dim-2 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2020-07-21 13:43:05,099 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:141, output treesize:140 [2020-07-21 13:43:05,165 INFO L440 ElimStorePlain]: Different costs {6=[|#memory_$Pointer$.offset|], 14=[|#memory_$Pointer$.base|]} [2020-07-21 13:43:05,190 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 3041402 treesize of output 3040378 [2020-07-21 13:43:05,492 INFO L544 ElimStorePlain]: Start of recursive call 2: 256 dim-0 vars, End of recursive call: 256 dim-0 vars, and 2 xjuncts. [2020-07-21 13:43:19,447 WARN L193 SmtUtils]: Spent 13.95 s on a formula simplification. DAG size of input: 3500 DAG size of output: 103 [2020-07-21 13:43:19,448 INFO L624 ElimStorePlain]: treesize reduction 3038912, result has 0.0 percent of original size [2020-07-21 13:43:19,461 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 13:43:19,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 13:43:19,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 13:43:19,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 13:43:19,475 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 13:43:19,486 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 234 treesize of output 226 [2020-07-21 13:43:19,488 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2020-07-21 13:43:21,262 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 13:43:21,879 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-07-21 13:43:21,880 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:43:21,961 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 20 case distinctions, treesize of input 1214856690689 treesize of output 1194277338296