/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -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 0.1.25-79ed534 [2020-07-20 03:39:13,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 03:39:13,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 03:39:13,134 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 03:39:13,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 03:39:13,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 03:39:13,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 03:39:13,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 03:39:13,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 03:39:13,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 03:39:13,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 03:39:13,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 03:39:13,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 03:39:13,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 03:39:13,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 03:39:13,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 03:39:13,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 03:39:13,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 03:39:13,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 03:39:13,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 03:39:13,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 03:39:13,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 03:39:13,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 03:39:13,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 03:39:13,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 03:39:13,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 03:39:13,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 03:39:13,167 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 03:39:13,167 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 03:39:13,168 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 03:39:13,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 03:39:13,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 03:39:13,171 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 03:39:13,172 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 03:39:13,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 03:39:13,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 03:39:13,177 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 03:39:13,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 03:39:13,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 03:39:13,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 03:39:13,180 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 03:39:13,181 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 03:39:13,207 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 03:39:13,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 03:39:13,209 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 03:39:13,209 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 03:39:13,210 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 03:39:13,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 03:39:13,210 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 03:39:13,210 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 03:39:13,210 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 03:39:13,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 03:39:13,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 03:39:13,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 03:39:13,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 03:39:13,212 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 03:39:13,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 03:39:13,213 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 03:39:13,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 03:39:13,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 03:39:13,213 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 03:39:13,214 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 03:39:13,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 03:39:13,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 03:39:13,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 03:39:13,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 03:39:13,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 03:39:13,215 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 03:39:13,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 03:39:13,215 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 03:39:13,216 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 03:39:13,216 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 03:39:13,522 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 03:39:13,535 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 03:39:13,538 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 03:39:13,540 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 03:39:13,540 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 03:39:13,540 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-07-20 03:39:13,597 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ebbaa774/d794425adbe84441b36fe49d412f1793/FLAG47521ffb8 [2020-07-20 03:39:14,106 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 03:39:14,107 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-07-20 03:39:14,118 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ebbaa774/d794425adbe84441b36fe49d412f1793/FLAG47521ffb8 [2020-07-20 03:39:14,426 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ebbaa774/d794425adbe84441b36fe49d412f1793 [2020-07-20 03:39:14,435 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 03:39:14,438 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 03:39:14,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 03:39:14,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 03:39:14,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 03:39:14,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:39:14" (1/1) ... [2020-07-20 03:39:14,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad45810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:39:14, skipping insertion in model container [2020-07-20 03:39:14,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:39:14" (1/1) ... [2020-07-20 03:39:14,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 03:39:14,508 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 03:39:14,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:39:14,957 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 03:39:14,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:39:15,052 INFO L208 MainTranslator]: Completed translation [2020-07-20 03:39:15,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:39:15 WrapperNode [2020-07-20 03:39:15,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 03:39:15,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 03:39:15,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 03:39:15,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 03:39:15,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:39:15" (1/1) ... [2020-07-20 03:39:15,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:39:15" (1/1) ... [2020-07-20 03:39:15,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:39:15" (1/1) ... [2020-07-20 03:39:15,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:39:15" (1/1) ... [2020-07-20 03:39:15,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:39:15" (1/1) ... [2020-07-20 03:39:15,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:39:15" (1/1) ... [2020-07-20 03:39:15,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:39:15" (1/1) ... [2020-07-20 03:39:15,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 03:39:15,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 03:39:15,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 03:39:15,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 03:39:15,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:39:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 03:39:15,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 03:39:15,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 03:39:15,195 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 03:39:15,195 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-20 03:39:15,195 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-20 03:39:15,196 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-20 03:39:15,196 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-20 03:39:15,196 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-20 03:39:15,196 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-20 03:39:15,196 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-20 03:39:15,196 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-20 03:39:15,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-20 03:39:15,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-20 03:39:15,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-20 03:39:15,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-20 03:39:15,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-20 03:39:15,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-20 03:39:15,198 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-20 03:39:15,198 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-20 03:39:15,198 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-20 03:39:15,198 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-20 03:39:15,198 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-20 03:39:15,198 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-20 03:39:15,199 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-20 03:39:15,199 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-20 03:39:15,199 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-20 03:39:15,199 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-20 03:39:15,199 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-20 03:39:15,199 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-20 03:39:15,200 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-20 03:39:15,200 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-20 03:39:15,200 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-20 03:39:15,200 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-20 03:39:15,200 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-20 03:39:15,200 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-20 03:39:15,201 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-20 03:39:15,201 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-20 03:39:15,201 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-20 03:39:15,201 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-20 03:39:15,201 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-20 03:39:15,201 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-20 03:39:15,201 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-20 03:39:15,202 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-20 03:39:15,202 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-20 03:39:15,202 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-20 03:39:15,202 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-20 03:39:15,202 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-20 03:39:15,202 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-20 03:39:15,202 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-20 03:39:15,203 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-20 03:39:15,203 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-20 03:39:15,203 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-20 03:39:15,203 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-20 03:39:15,203 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 03:39:15,203 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-20 03:39:15,204 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-20 03:39:15,204 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 03:39:15,204 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-20 03:39:15,204 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-20 03:39:15,204 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-20 03:39:15,204 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-20 03:39:15,204 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-20 03:39:15,205 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 03:39:15,205 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-20 03:39:15,205 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-20 03:39:15,205 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-20 03:39:15,205 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 03:39:15,205 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-20 03:39:15,206 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-20 03:39:15,206 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-20 03:39:15,206 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-20 03:39:15,206 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-20 03:39:15,206 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-20 03:39:15,206 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-20 03:39:15,207 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-20 03:39:15,207 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-20 03:39:15,207 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-20 03:39:15,207 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-20 03:39:15,207 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-20 03:39:15,207 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-20 03:39:15,207 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-20 03:39:15,208 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-20 03:39:15,208 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-20 03:39:15,208 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-20 03:39:15,208 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-20 03:39:15,208 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-20 03:39:15,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-20 03:39:15,209 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-20 03:39:15,209 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-20 03:39:15,209 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-20 03:39:15,209 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-20 03:39:15,209 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-20 03:39:15,209 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-20 03:39:15,209 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-20 03:39:15,210 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-20 03:39:15,210 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-20 03:39:15,210 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-20 03:39:15,210 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-20 03:39:15,210 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-20 03:39:15,210 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-20 03:39:15,210 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-20 03:39:15,211 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-20 03:39:15,211 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-20 03:39:15,211 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-20 03:39:15,211 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-20 03:39:15,211 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-20 03:39:15,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 03:39:15,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 03:39:15,212 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 03:39:15,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 03:39:15,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 03:39:15,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 03:39:15,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 03:39:15,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 03:39:15,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 03:39:15,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 03:39:15,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 03:39:15,761 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 03:39:15,762 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-07-20 03:39:15,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:39:15 BoogieIcfgContainer [2020-07-20 03:39:15,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 03:39:15,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 03:39:15,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 03:39:15,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 03:39:15,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 03:39:14" (1/3) ... [2020-07-20 03:39:15,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3803c492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:39:15, skipping insertion in model container [2020-07-20 03:39:15,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:39:15" (2/3) ... [2020-07-20 03:39:15,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3803c492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:39:15, skipping insertion in model container [2020-07-20 03:39:15,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:39:15" (3/3) ... [2020-07-20 03:39:15,773 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2020-07-20 03:39:15,783 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 03:39:15,790 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-07-20 03:39:15,804 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-07-20 03:39:15,828 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 03:39:15,828 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 03:39:15,828 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 03:39:15,828 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 03:39:15,829 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 03:39:15,830 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 03:39:15,830 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 03:39:15,830 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 03:39:15,849 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-07-20 03:39:15,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-20 03:39:15,854 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:39:15,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:39:15,856 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:39:15,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:39:15,862 INFO L82 PathProgramCache]: Analyzing trace with hash -742552803, now seen corresponding path program 1 times [2020-07-20 03:39:15,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:39:15,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442808215] [2020-07-20 03:39:15,872 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@294d3c9c [2020-07-20 03:39:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:39:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:39:16,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:39:16,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442808215] [2020-07-20 03:39:16,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:39:16,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:39:16,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228731439] [2020-07-20 03:39:16,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:39:16,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:39:16,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:39:16,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:39:16,105 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-07-20 03:39:16,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:39:16,236 INFO L93 Difference]: Finished difference Result 67 states and 104 transitions. [2020-07-20 03:39:16,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:39:16,238 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-07-20 03:39:16,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:39:16,263 INFO L225 Difference]: With dead ends: 67 [2020-07-20 03:39:16,263 INFO L226 Difference]: Without dead ends: 31 [2020-07-20 03:39:16,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:39:16,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-20 03:39:16,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-07-20 03:39:16,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-20 03:39:16,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-07-20 03:39:16,306 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 10 [2020-07-20 03:39:16,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:39:16,306 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-07-20 03:39:16,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:39:16,307 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-07-20 03:39:16,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-20 03:39:16,307 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:39:16,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:39:16,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 03:39:16,308 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:39:16,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:39:16,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1556669446, now seen corresponding path program 1 times [2020-07-20 03:39:16,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:39:16,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86781024] [2020-07-20 03:39:16,309 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@294d3c9c [2020-07-20 03:39:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:39:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:39:16,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:39:16,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86781024] [2020-07-20 03:39:16,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:39:16,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 03:39:16,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878854703] [2020-07-20 03:39:16,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 03:39:16,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:39:16,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 03:39:16,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 03:39:16,409 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 5 states. [2020-07-20 03:39:16,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:39:16,514 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-07-20 03:39:16,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 03:39:16,514 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-07-20 03:39:16,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:39:16,516 INFO L225 Difference]: With dead ends: 37 [2020-07-20 03:39:16,516 INFO L226 Difference]: Without dead ends: 35 [2020-07-20 03:39:16,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 03:39:16,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-20 03:39:16,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2020-07-20 03:39:16,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-20 03:39:16,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-07-20 03:39:16,523 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 11 [2020-07-20 03:39:16,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:39:16,524 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-07-20 03:39:16,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 03:39:16,524 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-07-20 03:39:16,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-20 03:39:16,524 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:39:16,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:39:16,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 03:39:16,525 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:39:16,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:39:16,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1973625457, now seen corresponding path program 1 times [2020-07-20 03:39:16,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:39:16,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196553037] [2020-07-20 03:39:16,526 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@294d3c9c [2020-07-20 03:39:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:39:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:39:16,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:39:16,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196553037] [2020-07-20 03:39:16,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:39:16,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 03:39:16,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346862490] [2020-07-20 03:39:16,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 03:39:16,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:39:16,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 03:39:16,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 03:39:16,667 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 6 states. [2020-07-20 03:39:16,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:39:16,818 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-07-20 03:39:16,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 03:39:16,820 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-07-20 03:39:16,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:39:16,821 INFO L225 Difference]: With dead ends: 54 [2020-07-20 03:39:16,821 INFO L226 Difference]: Without dead ends: 52 [2020-07-20 03:39:16,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-20 03:39:16,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-07-20 03:39:16,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 36. [2020-07-20 03:39:16,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-20 03:39:16,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-07-20 03:39:16,836 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 14 [2020-07-20 03:39:16,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:39:16,837 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-07-20 03:39:16,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 03:39:16,837 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-07-20 03:39:16,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 03:39:16,839 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:39:16,840 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:39:16,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 03:39:16,840 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:39:16,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:39:16,843 INFO L82 PathProgramCache]: Analyzing trace with hash -954667545, now seen corresponding path program 1 times [2020-07-20 03:39:16,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:39:16,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685373118] [2020-07-20 03:39:16,845 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@294d3c9c [2020-07-20 03:39:16,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:39:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:39:17,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:39:17,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685373118] [2020-07-20 03:39:17,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410211908] [2020-07-20 03:39:17,087 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6785f30b No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:39:17,351 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6785f30b issued 2 check-sat command(s) [2020-07-20 03:39:17,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:39:17,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 32 conjunts are in the unsatisfiable core [2020-07-20 03:39:17,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:39:17,480 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-20 03:39:17,481 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2020-07-20 03:39:17,481 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:39:17,496 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:39:17,504 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-20 03:39:17,505 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 03:39:17,519 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:39:17,521 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 03:39:17,521 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:29 [2020-07-20 03:39:17,620 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:39:17,621 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-07-20 03:39:17,622 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:39:17,666 INFO L624 ElimStorePlain]: treesize reduction 14, result has 81.1 percent of original size [2020-07-20 03:39:17,682 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 03:39:17,708 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:39:17,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 03:39:17,717 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 20 [2020-07-20 03:39:17,718 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-20 03:39:17,732 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:39:17,735 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:39:17,736 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:62, output treesize:27 [2020-07-20 03:39:17,843 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:39:17,844 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2020-07-20 03:39:17,845 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:39:17,875 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:39:17,878 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_29|, |v_#memory_int_30|], 4=[|v_#memory_int_32|]} [2020-07-20 03:39:17,891 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 03:39:17,914 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:39:17,918 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 03:39:17,940 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:39:17,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 03:39:17,967 INFO L350 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2020-07-20 03:39:17,968 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 45 [2020-07-20 03:39:17,969 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-20 03:39:17,998 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:39:18,005 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-07-20 03:39:18,006 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:80, output treesize:43 [2020-07-20 03:39:18,139 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2020-07-20 03:39:18,140 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:39:18,147 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:39:18,148 INFO L544 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:39:18,148 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:45, output treesize:3 [2020-07-20 03:39:18,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:39:18,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 03:39:18,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2020-07-20 03:39:18,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512755533] [2020-07-20 03:39:18,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 03:39:18,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:39:18,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 03:39:18,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-07-20 03:39:18,158 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 12 states. [2020-07-20 03:39:26,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:39:26,857 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2020-07-20 03:39:26,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-20 03:39:26,858 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2020-07-20 03:39:26,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:39:26,859 INFO L225 Difference]: With dead ends: 62 [2020-07-20 03:39:26,859 INFO L226 Difference]: Without dead ends: 60 [2020-07-20 03:39:26,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2020-07-20 03:39:26,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-20 03:39:26,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 27. [2020-07-20 03:39:26,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-20 03:39:26,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-07-20 03:39:26,867 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2020-07-20 03:39:26,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:39:26,867 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-07-20 03:39:26,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-20 03:39:26,868 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-07-20 03:39:26,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-20 03:39:26,868 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:39:26,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:39:27,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:39:27,078 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:39:27,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:39:27,079 INFO L82 PathProgramCache]: Analyzing trace with hash 903516662, now seen corresponding path program 1 times [2020-07-20 03:39:27,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:39:27,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213780230] [2020-07-20 03:39:27,080 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@294d3c9c [2020-07-20 03:39:27,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:39:27,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:39:27,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:39:27,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213780230] [2020-07-20 03:39:27,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:39:27,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 03:39:27,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330773794] [2020-07-20 03:39:27,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 03:39:27,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:39:27,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 03:39:27,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 03:39:27,199 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 6 states. [2020-07-20 03:39:27,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:39:27,300 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-07-20 03:39:27,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 03:39:27,300 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-07-20 03:39:27,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:39:27,301 INFO L225 Difference]: With dead ends: 42 [2020-07-20 03:39:27,301 INFO L226 Difference]: Without dead ends: 30 [2020-07-20 03:39:27,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 03:39:27,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-20 03:39:27,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-07-20 03:39:27,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-20 03:39:27,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-07-20 03:39:27,307 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 18 [2020-07-20 03:39:27,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:39:27,307 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-07-20 03:39:27,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 03:39:27,307 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-07-20 03:39:27,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 03:39:27,308 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:39:27,308 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:39:27,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-20 03:39:27,309 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:39:27,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:39:27,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1223911862, now seen corresponding path program 1 times [2020-07-20 03:39:27,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:39:27,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872534493] [2020-07-20 03:39:27,310 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@294d3c9c [2020-07-20 03:39:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:39:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:39:27,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:39:27,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872534493] [2020-07-20 03:39:27,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487224811] [2020-07-20 03:39:27,422 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@ac9b43c No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:39:27,557 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@ac9b43c issued 2 check-sat command(s) [2020-07-20 03:39:27,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:39:27,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 03:39:27,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:39:27,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 03:39:27,620 INFO L350 Elim1Store]: treesize reduction 33, result has 55.4 percent of original size [2020-07-20 03:39:27,620 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 48 [2020-07-20 03:39:27,622 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:39:27,681 INFO L624 ElimStorePlain]: treesize reduction 16, result has 81.4 percent of original size [2020-07-20 03:39:27,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 03:39:27,739 INFO L350 Elim1Store]: treesize reduction 33, result has 55.4 percent of original size [2020-07-20 03:39:27,739 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 48 [2020-07-20 03:39:27,740 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 03:39:27,799 INFO L624 ElimStorePlain]: treesize reduction 16, result has 79.7 percent of original size [2020-07-20 03:39:27,800 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:39:27,800 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:77, output treesize:63 [2020-07-20 03:39:27,899 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-20 03:39:27,905 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-20 03:39:27,919 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-07-20 03:39:27,920 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:39:27,932 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:39:27,932 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2020-07-20 03:39:27,933 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 03:39:27,937 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-20 03:39:27,938 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-20 03:39:28,001 INFO L624 ElimStorePlain]: treesize reduction 12, result has 84.6 percent of original size [2020-07-20 03:39:28,008 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-20 03:39:28,009 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-20 03:39:28,016 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:39:28,017 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2020-07-20 03:39:28,018 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-07-20 03:39:28,020 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-07-20 03:39:28,021 INFO L544 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-07-20 03:39:28,036 INFO L624 ElimStorePlain]: treesize reduction 20, result has 25.9 percent of original size [2020-07-20 03:39:28,036 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:39:28,036 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 4 variables, input treesize:110, output treesize:7 [2020-07-20 03:39:28,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:39:28,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 03:39:28,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2020-07-20 03:39:28,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263389988] [2020-07-20 03:39:28,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 03:39:28,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:39:28,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 03:39:28,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-07-20 03:39:28,059 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 11 states. [2020-07-20 03:39:28,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:39:28,524 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2020-07-20 03:39:28,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 03:39:28,524 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-07-20 03:39:28,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:39:28,525 INFO L225 Difference]: With dead ends: 57 [2020-07-20 03:39:28,525 INFO L226 Difference]: Without dead ends: 35 [2020-07-20 03:39:28,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-07-20 03:39:28,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-20 03:39:28,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2020-07-20 03:39:28,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-20 03:39:28,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-07-20 03:39:28,532 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 21 [2020-07-20 03:39:28,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:39:28,532 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-07-20 03:39:28,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 03:39:28,532 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-07-20 03:39:28,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 03:39:28,533 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:39:28,533 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:39:28,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:39:28,735 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:39:28,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:39:28,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1223476830, now seen corresponding path program 1 times [2020-07-20 03:39:28,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:39:28,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650293696] [2020-07-20 03:39:28,737 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@294d3c9c [2020-07-20 03:39:28,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:39:28,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:39:28,982 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:39:28,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650293696] [2020-07-20 03:39:28,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073971264] [2020-07-20 03:39:28,983 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@71b590b4 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:39:29,287 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@71b590b4 issued 3 check-sat command(s) [2020-07-20 03:39:29,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:39:29,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 40 conjunts are in the unsatisfiable core [2020-07-20 03:39:29,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:39:29,312 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-20 03:39:29,313 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2020-07-20 03:39:29,314 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:39:29,322 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:39:29,323 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:39:29,323 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:21 [2020-07-20 03:39:29,411 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:39:29,411 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 69 [2020-07-20 03:39:29,412 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:39:29,461 INFO L624 ElimStorePlain]: treesize reduction 28, result has 74.5 percent of original size [2020-07-20 03:39:29,466 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-07-20 03:39:29,467 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 03:39:29,486 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:39:29,491 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-07-20 03:39:29,491 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-20 03:39:29,509 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:39:29,510 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:39:29,510 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:80, output treesize:56 [2020-07-20 03:39:29,630 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:39:29,630 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 41 [2020-07-20 03:39:29,632 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:39:29,695 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:39:29,700 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 03:39:29,751 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:39:29,931 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2020-07-20 03:39:29,933 INFO L350 Elim1Store]: treesize reduction 254, result has 40.9 percent of original size [2020-07-20 03:39:29,933 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 6 case distinctions, treesize of input 233 treesize of output 275 [2020-07-20 03:39:29,936 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[11, 3, 2, 1] term [2020-07-20 03:39:29,937 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 11 disjuncts [2020-07-20 03:39:29,938 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-20 03:39:30,038 INFO L624 ElimStorePlain]: treesize reduction 144, result has 56.8 percent of original size [2020-07-20 03:39:30,041 INFO L544 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 03:39:30,083 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:39:30,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 03:39:30,102 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:39:30,103 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 89 [2020-07-20 03:39:30,104 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-07-20 03:39:30,150 INFO L624 ElimStorePlain]: treesize reduction 46, result has 70.1 percent of original size [2020-07-20 03:39:30,152 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 4 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 03:39:30,152 INFO L244 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:274, output treesize:92 [2020-07-20 03:39:30,281 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 59 [2020-07-20 03:39:30,282 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:39:30,297 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:39:30,298 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-07-20 03:39:30,299 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:106, output treesize:83 [2020-07-20 03:39:30,370 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:39:30,371 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 69 [2020-07-20 03:39:30,375 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-07-20 03:39:30,376 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-07-20 03:39:30,377 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-07-20 03:39:30,378 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-07-20 03:39:30,382 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-07-20 03:39:30,383 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-07-20 03:39:30,384 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-07-20 03:39:30,385 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:39:30,411 INFO L624 ElimStorePlain]: treesize reduction 77, result has 14.4 percent of original size [2020-07-20 03:39:30,412 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:39:30,412 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:87, output treesize:4 [2020-07-20 03:39:30,418 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:39:30,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 03:39:30,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2020-07-20 03:39:30,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832346914] [2020-07-20 03:39:30,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-20 03:39:30,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:39:30,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-20 03:39:30,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-07-20 03:39:30,421 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 16 states. [2020-07-20 03:39:31,052 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-07-20 03:39:32,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:39:32,050 INFO L93 Difference]: Finished difference Result 121 states and 137 transitions. [2020-07-20 03:39:32,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-20 03:39:32,052 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 24 [2020-07-20 03:39:32,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:39:32,054 INFO L225 Difference]: With dead ends: 121 [2020-07-20 03:39:32,054 INFO L226 Difference]: Without dead ends: 119 [2020-07-20 03:39:32,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2020-07-20 03:39:32,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-07-20 03:39:32,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 49. [2020-07-20 03:39:32,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-07-20 03:39:32,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2020-07-20 03:39:32,065 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 24 [2020-07-20 03:39:32,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:39:32,066 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2020-07-20 03:39:32,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-20 03:39:32,066 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2020-07-20 03:39:32,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 03:39:32,067 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:39:32,067 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:39:32,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:39:32,272 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:39:32,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:39:32,273 INFO L82 PathProgramCache]: Analyzing trace with hash -2050422112, now seen corresponding path program 1 times [2020-07-20 03:39:32,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:39:32,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994839579] [2020-07-20 03:39:32,275 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@294d3c9c [2020-07-20 03:39:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:39:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:39:32,503 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:39:32,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994839579] [2020-07-20 03:39:32,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415384238] [2020-07-20 03:39:32,504 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5e66d85a No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:39:32,704 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5e66d85a issued 3 check-sat command(s) [2020-07-20 03:39:32,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:39:32,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 27 conjunts are in the unsatisfiable core [2020-07-20 03:39:32,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:39:32,725 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-20 03:39:32,726 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2020-07-20 03:39:32,726 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:39:32,739 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:39:32,740 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 03:39:32,740 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:17 [2020-07-20 03:39:32,788 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:39:32,788 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 11 treesize of output 15 [2020-07-20 03:39:32,789 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 03:39:32,790 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:39:32,800 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:39:32,805 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 0 case distinctions, treesize of input 27 treesize of output 15 [2020-07-20 03:39:32,806 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 03:39:32,815 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:39:32,819 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 0 case distinctions, treesize of input 27 treesize of output 15 [2020-07-20 03:39:32,820 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-20 03:39:32,830 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:39:32,831 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:39:32,831 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:65, output treesize:19 [2020-07-20 03:39:32,857 INFO L440 ElimStorePlain]: Different costs {0=[|v_#memory_int_33|], 2=[|v_#memory_$Pointer$.offset_29|, |v_#memory_$Pointer$.base_29|]} [2020-07-20 03:39:32,861 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 0 case distinctions, treesize of input 25 treesize of output 17 [2020-07-20 03:39:32,861 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:39:32,871 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:39:32,874 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 78 [2020-07-20 03:39:32,875 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 03:39:32,885 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:39:32,905 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:39:32,905 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 97 [2020-07-20 03:39:32,907 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 3, 2, 1] term [2020-07-20 03:39:32,907 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 03:39:32,907 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-20 03:39:32,917 INFO L624 ElimStorePlain]: treesize reduction 40, result has 39.4 percent of original size [2020-07-20 03:39:32,918 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:39:32,918 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:112, output treesize:26 [2020-07-20 03:39:32,984 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 33 treesize of output 21 [2020-07-20 03:39:32,985 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:39:32,990 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:39:32,992 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2020-07-20 03:39:32,993 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 03:39:32,997 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:39:32,997 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:39:32,998 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:40, output treesize:9 [2020-07-20 03:39:33,019 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-07-20 03:39:33,020 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:39:33,021 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:39:33,022 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:39:33,022 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-20 03:39:33,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:39:33,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 03:39:33,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 19 [2020-07-20 03:39:33,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794574251] [2020-07-20 03:39:33,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-20 03:39:33,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:39:33,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-20 03:39:33,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2020-07-20 03:39:33,065 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand 19 states. [2020-07-20 03:39:33,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:39:33,860 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2020-07-20 03:39:33,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-20 03:39:33,861 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 24 [2020-07-20 03:39:33,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:39:33,863 INFO L225 Difference]: With dead ends: 85 [2020-07-20 03:39:33,863 INFO L226 Difference]: Without dead ends: 73 [2020-07-20 03:39:33,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2020-07-20 03:39:33,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-07-20 03:39:33,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 58. [2020-07-20 03:39:33,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-07-20 03:39:33,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2020-07-20 03:39:33,875 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 24 [2020-07-20 03:39:33,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:39:33,875 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2020-07-20 03:39:33,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-20 03:39:33,875 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2020-07-20 03:39:33,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 03:39:33,876 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:39:33,876 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:39:34,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:39:34,092 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:39:34,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:39:34,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1509760762, now seen corresponding path program 1 times [2020-07-20 03:39:34,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:39:34,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106198151] [2020-07-20 03:39:34,093 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@294d3c9c [2020-07-20 03:39:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 03:39:34,119 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 03:39:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 03:39:34,138 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 03:39:34,165 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 03:39:34,165 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 03:39:34,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-20 03:39:34,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 03:39:34 BoogieIcfgContainer [2020-07-20 03:39:34,205 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 03:39:34,206 INFO L168 Benchmark]: Toolchain (without parser) took 19769.92 ms. Allocated memory was 146.3 MB in the beginning and 320.3 MB in the end (delta: 174.1 MB). Free memory was 103.0 MB in the beginning and 187.6 MB in the end (delta: -84.5 MB). Peak memory consumption was 89.5 MB. Max. memory is 7.1 GB. [2020-07-20 03:39:34,207 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 146.3 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-20 03:39:34,207 INFO L168 Benchmark]: CACSL2BoogieTranslator took 614.13 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 102.6 MB in the beginning and 169.1 MB in the end (delta: -66.5 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-07-20 03:39:34,208 INFO L168 Benchmark]: Boogie Preprocessor took 63.59 ms. Allocated memory is still 202.4 MB. Free memory was 169.1 MB in the beginning and 166.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-07-20 03:39:34,208 INFO L168 Benchmark]: RCFGBuilder took 648.06 ms. Allocated memory is still 202.4 MB. Free memory was 166.3 MB in the beginning and 119.3 MB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 7.1 GB. [2020-07-20 03:39:34,209 INFO L168 Benchmark]: TraceAbstraction took 18438.17 ms. Allocated memory was 202.4 MB in the beginning and 320.3 MB in the end (delta: 118.0 MB). Free memory was 118.6 MB in the beginning and 187.6 MB in the end (delta: -69.0 MB). Peak memory consumption was 49.0 MB. Max. memory is 7.1 GB. [2020-07-20 03:39:34,212 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 146.3 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 614.13 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 102.6 MB in the beginning and 169.1 MB in the end (delta: -66.5 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 63.59 ms. Allocated memory is still 202.4 MB. Free memory was 169.1 MB in the beginning and 166.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 648.06 ms. Allocated memory is still 202.4 MB. Free memory was 166.3 MB in the beginning and 119.3 MB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18438.17 ms. Allocated memory was 202.4 MB in the beginning and 320.3 MB in the end (delta: 118.0 MB). Free memory was 118.6 MB in the beginning and 187.6 MB in the end (delta: -69.0 MB). Peak memory consumption was 49.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1039]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L994] SLL* null = malloc(sizeof(SLL)); [L995] null->colour = BLACK [L996] null->next = ((void*)0) [L998] SLL* list = malloc(sizeof(SLL)); [L999] list->next = null [L1000] list->colour = BLACK [L1002] SLL* end = list; VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, null={-2:0}] [L1005] COND TRUE __VERIFIER_nondet_int() [L1008] end->next = malloc(sizeof(SLL)) [L1009] EXPR end->next [L1009] end = end->next [L1010] end->next = null [L1012] COND FALSE !(__VERIFIER_nondet_int()) [L1018] end->colour = RED [L1019] end->next = malloc(sizeof(SLL)) [L1020] EXPR end->next [L1020] end = end->next [L1021] end->next = null [L1022] end->colour = BLACK VAL [end={-4:0}, list={-1:0}, malloc(sizeof(SLL))={-3:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-4:0}, null={-2:0}] [L1005] COND FALSE !(__VERIFIER_nondet_int()) [L1026] end = null [L1027] end = list VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-3:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-4:0}, null={-2:0}] [L1030] COND FALSE !(!(null != end)) VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-3:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-4:0}, null={-2:0}] [L1031] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-3:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-4:0}, null={-2:0}] [L1031] COND FALSE !(!(BLACK == end->colour)) [L1033] COND TRUE null != end [L1035] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-3:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-4:0}, null={-2:0}] [L1035] COND FALSE !(RED == end->colour) [L1042] EXPR end->next [L1042] end = end->next [L1033] COND TRUE null != end [L1035] EXPR end->colour VAL [end={-3:0}, end->colour=0, list={-1:0}, malloc(sizeof(SLL))={-3:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-4:0}, null={-2:0}] [L1035] COND TRUE RED == end->colour [L1037] EXPR end->next [L1037] end = end->next [L1038] COND FALSE !(!(null != end)) VAL [end={-4:0}, list={-1:0}, malloc(sizeof(SLL))={-3:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-4:0}, null={-2:0}] [L1039] EXPR end->colour VAL [end={-4:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-3:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-4:0}, null={-2:0}] [L1039] COND TRUE !(BLACK != end->colour) [L1039] __VERIFIER_error() VAL [end={-4:0}, list={-1:0}, malloc(sizeof(SLL))={-3:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-4:0}, null={-2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 38 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 18.3s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 12.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 218 SDtfs, 431 SDslu, 999 SDs, 0 SdLazy, 1224 SolverSat, 163 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 9.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 187 GetRequests, 85 SyntacticMatches, 3 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 145 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 252 NumberOfCodeBlocks, 224 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 213 ConstructedInterpolants, 19 QuantifiedInterpolants, 88800 SizeOfPredicates, 48 NumberOfNonLiveVariables, 399 ConjunctsInSsa, 110 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 1/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...