/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/dll2n_insert_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:17:11,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:17:11,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:17:11,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:17:11,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:17:11,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:17:11,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:17:11,267 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:17:11,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:17:11,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:17:11,276 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:17:11,278 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:17:11,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:17:11,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:17:11,281 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:17:11,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:17:11,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:17:11,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:17:11,287 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:17:11,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:17:11,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:17:11,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:17:11,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:17:11,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:17:11,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:17:11,306 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:17:11,306 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:17:11,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:17:11,308 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:17:11,310 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:17:11,310 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:17:11,311 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:17:11,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:17:11,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:17:11,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:17:11,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:17:11,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:17:11,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:17:11,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:17:11,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:17:11,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:17:11,317 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 [2019-11-06 21:17:11,351 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:17:11,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:17:11,353 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:17:11,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:17:11,353 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:17:11,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:17:11,354 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:17:11,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:17:11,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:17:11,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:17:11,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:17:11,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:17:11,357 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:17:11,357 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:17:11,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:17:11,357 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:17:11,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:17:11,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:17:11,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:17:11,359 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:17:11,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:17:11,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:17:11,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:17:11,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:17:11,360 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:17:11,361 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:17:11,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:17:11,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:17:11,361 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:17:11,661 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:17:11,679 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:17:11,683 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:17:11,684 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:17:11,685 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:17:11,685 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_insert_unequal.i [2019-11-06 21:17:11,758 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/353596205/a39ae8917695467f94a16332c24c3df2/FLAG3a325894e [2019-11-06 21:17:12,282 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:17:12,283 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2n_insert_unequal.i [2019-11-06 21:17:12,303 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/353596205/a39ae8917695467f94a16332c24c3df2/FLAG3a325894e [2019-11-06 21:17:12,560 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/353596205/a39ae8917695467f94a16332c24c3df2 [2019-11-06 21:17:12,570 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:17:12,572 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:17:12,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:17:12,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:17:12,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:17:12,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:17:12" (1/1) ... [2019-11-06 21:17:12,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ee4954f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:17:12, skipping insertion in model container [2019-11-06 21:17:12,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:17:12" (1/1) ... [2019-11-06 21:17:12,588 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:17:12,639 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:17:13,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:17:13,158 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:17:13,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:17:13,304 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:17:13,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:17:13 WrapperNode [2019-11-06 21:17:13,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:17:13,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:17:13,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:17:13,306 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:17:13,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:17:13" (1/1) ... [2019-11-06 21:17:13,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:17:13" (1/1) ... [2019-11-06 21:17:13,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:17:13" (1/1) ... [2019-11-06 21:17:13,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:17:13" (1/1) ... [2019-11-06 21:17:13,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:17:13" (1/1) ... [2019-11-06 21:17:13,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:17:13" (1/1) ... [2019-11-06 21:17:13,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:17:13" (1/1) ... [2019-11-06 21:17:13,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:17:13,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:17:13,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:17:13,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:17:13,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:17:13" (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 [2019-11-06 21:17:13,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:17:13,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:17:13,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-06 21:17:13,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-06 21:17:13,457 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-06 21:17:13,458 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-11-06 21:17:13,458 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2019-11-06 21:17:13,458 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2019-11-06 21:17:13,458 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert [2019-11-06 21:17:13,458 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:17:13,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:17:13,459 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-06 21:17:13,459 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-06 21:17:13,459 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-06 21:17:13,459 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-06 21:17:13,459 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-06 21:17:13,460 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-06 21:17:13,460 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-06 21:17:13,460 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-06 21:17:13,460 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-06 21:17:13,460 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-06 21:17:13,460 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-06 21:17:13,461 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-06 21:17:13,461 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-06 21:17:13,461 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-06 21:17:13,461 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-06 21:17:13,461 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-06 21:17:13,461 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-06 21:17:13,462 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-06 21:17:13,462 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-06 21:17:13,462 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-06 21:17:13,462 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-06 21:17:13,462 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-06 21:17:13,462 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-06 21:17:13,462 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-06 21:17:13,463 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-06 21:17:13,463 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-06 21:17:13,463 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-06 21:17:13,463 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-06 21:17:13,463 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-06 21:17:13,463 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-06 21:17:13,464 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-06 21:17:13,464 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-06 21:17:13,464 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-06 21:17:13,464 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-06 21:17:13,464 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-06 21:17:13,464 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-06 21:17:13,464 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-06 21:17:13,465 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-06 21:17:13,465 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-06 21:17:13,465 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-06 21:17:13,465 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-06 21:17:13,465 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-06 21:17:13,465 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-06 21:17:13,466 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-06 21:17:13,466 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-06 21:17:13,466 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-06 21:17:13,466 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-06 21:17:13,466 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-06 21:17:13,466 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-06 21:17:13,466 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-06 21:17:13,467 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-06 21:17:13,467 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-06 21:17:13,467 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 21:17:13,467 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-06 21:17:13,467 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-06 21:17:13,467 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 21:17:13,467 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-06 21:17:13,468 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-06 21:17:13,468 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-06 21:17:13,468 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-06 21:17:13,468 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-06 21:17:13,468 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-06 21:17:13,468 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-06 21:17:13,469 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-06 21:17:13,469 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-06 21:17:13,469 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 21:17:13,469 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-06 21:17:13,469 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-06 21:17:13,469 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-06 21:17:13,469 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-06 21:17:13,470 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-06 21:17:13,470 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-06 21:17:13,470 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-06 21:17:13,470 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-06 21:17:13,470 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-06 21:17:13,470 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-06 21:17:13,470 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-06 21:17:13,471 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-06 21:17:13,471 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-06 21:17:13,471 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-06 21:17:13,471 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-06 21:17:13,471 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-06 21:17:13,471 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-06 21:17:13,472 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-06 21:17:13,472 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-06 21:17:13,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-06 21:17:13,472 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-06 21:17:13,472 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-06 21:17:13,472 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-06 21:17:13,473 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-06 21:17:13,473 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-06 21:17:13,473 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-06 21:17:13,473 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-06 21:17:13,473 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-06 21:17:13,473 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-06 21:17:13,473 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-06 21:17:13,473 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-06 21:17:13,474 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-06 21:17:13,474 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-06 21:17:13,474 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-06 21:17:13,474 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-06 21:17:13,474 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-06 21:17:13,474 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-06 21:17:13,474 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-06 21:17:13,475 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-06 21:17:13,475 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-06 21:17:13,475 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-11-06 21:17:13,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 21:17:13,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:17:13,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:17:13,475 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2019-11-06 21:17:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2019-11-06 21:17:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:17:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:17:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert [2019-11-06 21:17:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:17:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:17:13,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-06 21:17:13,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:17:13,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:17:13,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:17:13,944 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-06 21:17:14,171 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:17:14,172 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 21:17:14,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:17:14 BoogieIcfgContainer [2019-11-06 21:17:14,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:17:14,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:17:14,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:17:14,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:17:14,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:17:12" (1/3) ... [2019-11-06 21:17:14,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dc6834f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:17:14, skipping insertion in model container [2019-11-06 21:17:14,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:17:13" (2/3) ... [2019-11-06 21:17:14,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dc6834f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:17:14, skipping insertion in model container [2019-11-06 21:17:14,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:17:14" (3/3) ... [2019-11-06 21:17:14,183 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_insert_unequal.i [2019-11-06 21:17:14,194 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:17:14,203 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:17:14,216 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:17:14,244 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:17:14,244 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:17:14,244 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:17:14,244 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:17:14,245 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:17:14,245 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:17:14,245 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:17:14,245 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:17:14,265 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2019-11-06 21:17:14,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-06 21:17:14,272 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:17:14,274 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:17:14,276 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:17:14,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:17:14,282 INFO L82 PathProgramCache]: Analyzing trace with hash 405466376, now seen corresponding path program 1 times [2019-11-06 21:17:14,292 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:17:14,293 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412703598] [2019-11-06 21:17:14,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:17:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:14,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:14,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:14,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:17:14,688 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412703598] [2019-11-06 21:17:14,690 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:17:14,691 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 21:17:14,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968148622] [2019-11-06 21:17:14,698 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:17:14,699 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:17:14,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:17:14,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:17:14,717 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 4 states. [2019-11-06 21:17:15,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:17:15,002 INFO L93 Difference]: Finished difference Result 107 states and 147 transitions. [2019-11-06 21:17:15,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 21:17:15,005 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2019-11-06 21:17:15,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:17:15,018 INFO L225 Difference]: With dead ends: 107 [2019-11-06 21:17:15,018 INFO L226 Difference]: Without dead ends: 47 [2019-11-06 21:17:15,022 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:17:15,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-06 21:17:15,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2019-11-06 21:17:15,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-06 21:17:15,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2019-11-06 21:17:15,071 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 31 [2019-11-06 21:17:15,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:17:15,071 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2019-11-06 21:17:15,072 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:17:15,072 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2019-11-06 21:17:15,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-06 21:17:15,073 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:17:15,073 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:17:15,074 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:17:15,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:17:15,074 INFO L82 PathProgramCache]: Analyzing trace with hash -954650364, now seen corresponding path program 1 times [2019-11-06 21:17:15,075 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:17:15,075 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839444643] [2019-11-06 21:17:15,075 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:17:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:15,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:17:15,307 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839444643] [2019-11-06 21:17:15,307 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:17:15,308 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 21:17:15,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615897544] [2019-11-06 21:17:15,310 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 21:17:15,311 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:17:15,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 21:17:15,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:17:15,312 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand 5 states. [2019-11-06 21:17:15,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:17:15,527 INFO L93 Difference]: Finished difference Result 64 states and 82 transitions. [2019-11-06 21:17:15,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:17:15,527 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-11-06 21:17:15,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:17:15,529 INFO L225 Difference]: With dead ends: 64 [2019-11-06 21:17:15,529 INFO L226 Difference]: Without dead ends: 51 [2019-11-06 21:17:15,530 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 21:17:15,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-11-06 21:17:15,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2019-11-06 21:17:15,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-06 21:17:15,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2019-11-06 21:17:15,542 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 31 [2019-11-06 21:17:15,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:17:15,542 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2019-11-06 21:17:15,542 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 21:17:15,543 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2019-11-06 21:17:15,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-06 21:17:15,544 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:17:15,544 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:17:15,544 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:17:15,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:17:15,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1456779385, now seen corresponding path program 1 times [2019-11-06 21:17:15,545 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:17:15,545 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53829547] [2019-11-06 21:17:15,546 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:17:15,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:15,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:17:15,794 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53829547] [2019-11-06 21:17:15,794 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:17:15,794 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-11-06 21:17:15,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043136361] [2019-11-06 21:17:15,796 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-06 21:17:15,796 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:17:15,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-06 21:17:15,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:17:15,797 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand 11 states. [2019-11-06 21:17:16,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:17:16,195 INFO L93 Difference]: Finished difference Result 86 states and 109 transitions. [2019-11-06 21:17:16,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 21:17:16,196 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2019-11-06 21:17:16,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:17:16,197 INFO L225 Difference]: With dead ends: 86 [2019-11-06 21:17:16,197 INFO L226 Difference]: Without dead ends: 54 [2019-11-06 21:17:16,200 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-11-06 21:17:16,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-06 21:17:16,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 46. [2019-11-06 21:17:16,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-06 21:17:16,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2019-11-06 21:17:16,221 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 32 [2019-11-06 21:17:16,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:17:16,222 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2019-11-06 21:17:16,222 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-06 21:17:16,222 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2019-11-06 21:17:16,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-06 21:17:16,223 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:17:16,223 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:17:16,224 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:17:16,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:17:16,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1565838603, now seen corresponding path program 1 times [2019-11-06 21:17:16,226 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:17:16,226 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224335145] [2019-11-06 21:17:16,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:17:16,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:16,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:16,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:17:16,371 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224335145] [2019-11-06 21:17:16,371 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:17:16,371 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 21:17:16,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585053778] [2019-11-06 21:17:16,372 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 21:17:16,372 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:17:16,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 21:17:16,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:17:16,373 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand 5 states. [2019-11-06 21:17:16,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:17:16,578 INFO L93 Difference]: Finished difference Result 87 states and 110 transitions. [2019-11-06 21:17:16,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:17:16,578 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2019-11-06 21:17:16,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:17:16,580 INFO L225 Difference]: With dead ends: 87 [2019-11-06 21:17:16,580 INFO L226 Difference]: Without dead ends: 50 [2019-11-06 21:17:16,581 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:17:16,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-11-06 21:17:16,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2019-11-06 21:17:16,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-11-06 21:17:16,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 60 transitions. [2019-11-06 21:17:16,589 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 60 transitions. Word has length 37 [2019-11-06 21:17:16,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:17:16,590 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 60 transitions. [2019-11-06 21:17:16,590 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 21:17:16,590 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 60 transitions. [2019-11-06 21:17:16,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-06 21:17:16,591 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:17:16,591 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:17:16,592 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:17:16,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:17:16,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1627878217, now seen corresponding path program 1 times [2019-11-06 21:17:16,592 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:17:16,592 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146005571] [2019-11-06 21:17:16,593 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:17:16,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:16,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:16,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:16,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:17:16,793 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146005571] [2019-11-06 21:17:16,793 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143861560] [2019-11-06 21:17:16,793 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-06 21:17:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:16,936 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-06 21:17:16,945 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:17:16,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:17:16,999 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 21:17:16,999 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 13 [2019-11-06 21:17:16,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117469423] [2019-11-06 21:17:17,000 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-06 21:17:17,000 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:17:17,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-06 21:17:17,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:17:17,001 INFO L87 Difference]: Start difference. First operand 49 states and 60 transitions. Second operand 13 states. [2019-11-06 21:17:17,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:17:17,398 INFO L93 Difference]: Finished difference Result 91 states and 114 transitions. [2019-11-06 21:17:17,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-06 21:17:17,398 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2019-11-06 21:17:17,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:17:17,400 INFO L225 Difference]: With dead ends: 91 [2019-11-06 21:17:17,400 INFO L226 Difference]: Without dead ends: 59 [2019-11-06 21:17:17,401 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2019-11-06 21:17:17,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-06 21:17:17,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2019-11-06 21:17:17,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-11-06 21:17:17,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2019-11-06 21:17:17,416 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 37 [2019-11-06 21:17:17,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:17:17,416 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2019-11-06 21:17:17,416 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-06 21:17:17,416 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2019-11-06 21:17:17,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-06 21:17:17,421 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:17:17,421 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:17:17,622 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:17:17,623 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:17:17,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:17:17,623 INFO L82 PathProgramCache]: Analyzing trace with hash 866300553, now seen corresponding path program 1 times [2019-11-06 21:17:17,624 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:17:17,624 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337081494] [2019-11-06 21:17:17,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:17:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:17,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:17,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:17,828 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-06 21:17:17,829 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337081494] [2019-11-06 21:17:17,829 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:17:17,830 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 21:17:17,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529885730] [2019-11-06 21:17:17,830 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 21:17:17,831 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:17:17,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 21:17:17,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-06 21:17:17,833 INFO L87 Difference]: Start difference. First operand 51 states and 62 transitions. Second operand 8 states. [2019-11-06 21:17:18,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:17:18,048 INFO L93 Difference]: Finished difference Result 65 states and 81 transitions. [2019-11-06 21:17:18,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 21:17:18,049 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2019-11-06 21:17:18,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:17:18,050 INFO L225 Difference]: With dead ends: 65 [2019-11-06 21:17:18,050 INFO L226 Difference]: Without dead ends: 50 [2019-11-06 21:17:18,052 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:17:18,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-11-06 21:17:18,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2019-11-06 21:17:18,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-06 21:17:18,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2019-11-06 21:17:18,064 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 42 [2019-11-06 21:17:18,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:17:18,064 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2019-11-06 21:17:18,064 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 21:17:18,065 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2019-11-06 21:17:18,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-06 21:17:18,065 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:17:18,066 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:17:18,066 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:17:18,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:17:18,066 INFO L82 PathProgramCache]: Analyzing trace with hash 380933720, now seen corresponding path program 1 times [2019-11-06 21:17:18,066 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:17:18,067 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683212029] [2019-11-06 21:17:18,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:17:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:18,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:18,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:19,253 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 41 [2019-11-06 21:17:19,598 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2019-11-06 21:17:19,881 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2019-11-06 21:17:20,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:20,649 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 37 [2019-11-06 21:17:20,676 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:17:20,676 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683212029] [2019-11-06 21:17:20,676 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035559826] [2019-11-06 21:17:20,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-06 21:17:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:20,817 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 115 conjunts are in the unsatisfiable core [2019-11-06 21:17:20,825 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:17:20,929 INFO L375 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 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-06 21:17:20,929 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:17:20,949 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:20,949 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:17:20,950 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-11-06 21:17:20,991 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:20,991 INFO L375 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 [2019-11-06 21:17:20,992 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:17:21,033 INFO L567 ElimStorePlain]: treesize reduction 14, result has 67.4 percent of original size [2019-11-06 21:17:21,033 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:17:21,034 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:29 [2019-11-06 21:17:21,110 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_int_44|, |v_#memory_$Pointer$.base_41|], 2=[|v_#memory_int_39|]} [2019-11-06 21:17:21,116 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:17:21,119 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2019-11-06 21:17:21,120 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:17:21,144 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:21,152 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:17:21,155 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2019-11-06 21:17:21,155 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-06 21:17:21,182 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:21,188 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:17:21,189 INFO L375 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 27 treesize of output 11 [2019-11-06 21:17:21,190 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-06 21:17:21,209 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:21,209 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:17:21,210 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:85, output treesize:51 [2019-11-06 21:17:21,318 INFO L392 ElimStorePlain]: Different costs {2=[|v_#memory_int_45|], 6=[|v_#memory_$Pointer$.base_42|]} [2019-11-06 21:17:21,324 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 11 [2019-11-06 21:17:21,325 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:17:21,346 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:21,352 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:17:21,391 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:21,392 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 67 treesize of output 116 [2019-11-06 21:17:21,394 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-06 21:17:21,395 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:17:21,395 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-06 21:17:21,396 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:17:21,400 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 3 xjuncts. [2019-11-06 21:17:21,487 INFO L567 ElimStorePlain]: treesize reduction 305, result has 20.2 percent of original size [2019-11-06 21:17:21,488 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-06 21:17:21,488 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:122, output treesize:75 [2019-11-06 21:17:22,167 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2019-11-06 21:17:22,168 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:17:22,203 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:22,204 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.offset_BEFORE_CALL_1|, |v_#memory_int_BEFORE_CALL_1|], 6=[|v_#memory_$Pointer$.base_BEFORE_CALL_1|]} [2019-11-06 21:17:22,226 INFO L375 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 7 treesize of output 3 [2019-11-06 21:17:22,226 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-06 21:17:22,255 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:22,261 INFO L375 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 11 treesize of output 3 [2019-11-06 21:17:22,262 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-06 21:17:22,285 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:22,314 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:22,315 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 67 [2019-11-06 21:17:22,316 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:17:22,317 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:17:22,319 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:17:22,320 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:17:22,322 INFO L496 ElimStorePlain]: Start of recursive call 5: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-06 21:17:22,366 INFO L567 ElimStorePlain]: treesize reduction 28, result has 50.0 percent of original size [2019-11-06 21:17:22,366 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:17:22,367 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:124, output treesize:13 [2019-11-06 21:17:22,574 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-06 21:17:22,596 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:22,600 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-06 21:17:22,624 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:22,625 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-11-06 21:17:22,626 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:92, output treesize:68 [2019-11-06 21:17:23,851 WARN L191 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 42 [2019-11-06 21:17:25,181 WARN L191 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 48 [2019-11-06 21:17:26,677 WARN L191 SmtUtils]: Spent 1.38 s on a formula simplification that was a NOOP. DAG size: 52 [2019-11-06 21:17:28,072 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 57 [2019-11-06 21:17:28,086 INFO L392 ElimStorePlain]: Different costs {2=[|v_#memory_int_42|, |v_#memory_int_43|], 14=[|v_#memory_$Pointer$.offset_42|], 24=[|v_#memory_$Pointer$.base_44|]} [2019-11-06 21:17:28,096 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-06 21:17:28,402 WARN L191 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2019-11-06 21:17:28,402 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:28,411 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-06 21:17:28,622 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2019-11-06 21:17:28,622 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:28,629 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-06 21:17:28,845 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2019-11-06 21:17:28,845 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:28,854 INFO L496 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-06 21:17:29,068 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2019-11-06 21:17:29,069 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:29,070 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 4 dim-2 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2019-11-06 21:17:29,070 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 7 variables, input treesize:305, output treesize:716 [2019-11-06 21:17:31,617 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2019-11-06 21:17:31,655 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-06 21:17:32,040 WARN L191 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-11-06 21:17:32,041 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:32,042 INFO L496 ElimStorePlain]: Start of recursive call 1: 10 dim-0 vars, 1 dim-2 vars, End of recursive call: 11 dim-0 vars, and 1 xjuncts. [2019-11-06 21:17:32,042 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 11 variables, input treesize:1634, output treesize:1824 [2019-11-06 21:17:51,512 WARN L191 SmtUtils]: Spent 1.88 s on a formula simplification that was a NOOP. DAG size: 117 [2019-11-06 21:17:51,779 INFO L235 Elim1Store]: Index analysis took 183 ms [2019-11-06 21:17:51,791 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:51,792 INFO L375 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 28 treesize of output 38 [2019-11-06 21:17:51,793 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:17:53,321 WARN L191 SmtUtils]: Spent 1.53 s on a formula simplification that was a NOOP. DAG size: 114 [2019-11-06 21:17:53,322 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:53,326 INFO L392 ElimStorePlain]: Different costs {9=[|v_#memory_int_BEFORE_CALL_4|], 33=[|v_#memory_$Pointer$.offset_BEFORE_CALL_4|], 108=[|v_old(#memory_$Pointer$.base)_AFTER_CALL_6|]} [2019-11-06 21:17:53,375 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-06 21:17:53,405 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:17:53,415 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:17:53,507 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:17:53,649 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:17:53,650 INFO L235 Elim1Store]: Index analysis took 275 ms [2019-11-06 21:17:53,792 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-11-06 21:17:53,792 INFO L341 Elim1Store]: treesize reduction 15, result has 90.3 percent of original size [2019-11-06 21:17:53,793 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 597 treesize of output 216 [2019-11-06 21:17:53,794 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-06 21:17:56,348 WARN L191 SmtUtils]: Spent 2.55 s on a formula simplification. DAG size of input: 136 DAG size of output: 118 [2019-11-06 21:17:56,348 INFO L567 ElimStorePlain]: treesize reduction 84, result has 94.6 percent of original size [2019-11-06 21:17:56,354 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:17:56,367 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:17:56,378 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:17:57,065 WARN L191 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 107 [2019-11-06 21:17:57,067 INFO L341 Elim1Store]: treesize reduction 591, result has 44.4 percent of original size [2019-11-06 21:17:57,067 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 1045 treesize of output 1083 [2019-11-06 21:17:57,071 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-06 21:17:58,338 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 165 DAG size of output: 118 [2019-11-06 21:17:58,338 INFO L567 ElimStorePlain]: treesize reduction 754, result has 53.3 percent of original size [2019-11-06 21:17:58,343 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:17:58,354 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:17:58,365 INFO L189 IndexEqualityManager]: detected not equals via solver