/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.trace.refinement.strategy CAMEL_NO_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 21:30:09,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 21:30:09,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 21:30:09,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 21:30:09,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 21:30:09,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 21:30:09,291 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 21:30:09,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 21:30:09,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 21:30:09,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 21:30:09,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 21:30:09,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 21:30:09,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 21:30:09,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 21:30:09,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 21:30:09,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 21:30:09,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 21:30:09,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 21:30:09,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 21:30:09,326 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 21:30:09,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 21:30:09,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 21:30:09,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 21:30:09,331 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 21:30:09,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-19 21:30:09,333 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-19 21:30:09,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-19 21:30:09,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-19 21:30:09,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-19 21:30:09,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-19 21:30:09,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-19 21:30:09,336 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-19 21:30:09,337 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-19 21:30:09,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-19 21:30:09,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-19 21:30:09,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-19 21:30:09,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-19 21:30:09,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-19 21:30:09,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 21:30:09,341 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 21:30:09,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 21:30:09,342 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 [2020-07-19 21:30:09,357 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 21:30:09,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 21:30:09,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 21:30:09,359 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 21:30:09,359 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 21:30:09,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 21:30:09,359 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 21:30:09,360 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 21:30:09,360 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 21:30:09,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 21:30:09,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 21:30:09,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 21:30:09,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 21:30:09,361 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 21:30:09,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 21:30:09,361 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 21:30:09,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 21:30:09,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 21:30:09,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 21:30:09,362 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 21:30:09,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 21:30:09,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 21:30:09,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 21:30:09,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 21:30:09,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 21:30:09,363 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 21:30:09,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 21:30:09,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 21:30:09,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 21:30:09,364 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_NO_AM [2020-07-19 21:30:09,660 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 21:30:09,673 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 21:30:09,676 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 21:30:09,678 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 21:30:09,678 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 21:30:09,679 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-07-19 21:30:09,737 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bea768749/866c8295d2f14d67ae7bfd893fbb8f4b/FLAG953934639 [2020-07-19 21:30:10,252 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 21:30:10,252 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-07-19 21:30:10,273 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bea768749/866c8295d2f14d67ae7bfd893fbb8f4b/FLAG953934639 [2020-07-19 21:30:10,565 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bea768749/866c8295d2f14d67ae7bfd893fbb8f4b [2020-07-19 21:30:10,573 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 21:30:10,576 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 21:30:10,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 21:30:10,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 21:30:10,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 21:30:10,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:30:10" (1/1) ... [2020-07-19 21:30:10,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a0cadcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:10, skipping insertion in model container [2020-07-19 21:30:10,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:30:10" (1/1) ... [2020-07-19 21:30:10,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 21:30:10,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 21:30:11,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:30:11,185 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 21:30:11,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:30:11,309 INFO L208 MainTranslator]: Completed translation [2020-07-19 21:30:11,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:11 WrapperNode [2020-07-19 21:30:11,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 21:30:11,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 21:30:11,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 21:30:11,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 21:30:11,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:11" (1/1) ... [2020-07-19 21:30:11,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:11" (1/1) ... [2020-07-19 21:30:11,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:11" (1/1) ... [2020-07-19 21:30:11,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:11" (1/1) ... [2020-07-19 21:30:11,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:11" (1/1) ... [2020-07-19 21:30:11,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:11" (1/1) ... [2020-07-19 21:30:11,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:11" (1/1) ... [2020-07-19 21:30:11,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 21:30:11,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 21:30:11,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 21:30:11,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 21:30:11,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:11" (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 [2020-07-19 21:30:11,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 21:30:11,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 21:30:11,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-07-19 21:30:11,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-19 21:30:11,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-19 21:30:11,494 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-07-19 21:30:11,494 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-07-19 21:30:11,495 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-07-19 21:30:11,495 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-07-19 21:30:11,496 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-07-19 21:30:11,496 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-07-19 21:30:11,496 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-07-19 21:30:11,496 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-07-19 21:30:11,497 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-07-19 21:30:11,497 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-07-19 21:30:11,498 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-07-19 21:30:11,498 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-07-19 21:30:11,499 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-07-19 21:30:11,499 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-07-19 21:30:11,499 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-07-19 21:30:11,499 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-07-19 21:30:11,499 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 21:30:11,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 21:30:11,499 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-19 21:30:11,500 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-19 21:30:11,501 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-19 21:30:11,501 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-19 21:30:11,501 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-19 21:30:11,501 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-19 21:30:11,501 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-19 21:30:11,501 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-19 21:30:11,501 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-19 21:30:11,502 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-19 21:30:11,502 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-19 21:30:11,502 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-19 21:30:11,502 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-19 21:30:11,503 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-19 21:30:11,503 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-19 21:30:11,503 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-19 21:30:11,503 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-19 21:30:11,504 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-19 21:30:11,504 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-19 21:30:11,504 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-19 21:30:11,504 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-19 21:30:11,504 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-19 21:30:11,504 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-19 21:30:11,504 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-19 21:30:11,504 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-19 21:30:11,504 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-19 21:30:11,505 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-19 21:30:11,505 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-19 21:30:11,505 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-19 21:30:11,505 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-19 21:30:11,505 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-19 21:30:11,505 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-19 21:30:11,505 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-19 21:30:11,505 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-19 21:30:11,505 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-19 21:30:11,505 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-19 21:30:11,505 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-19 21:30:11,506 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-19 21:30:11,506 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-19 21:30:11,506 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-19 21:30:11,506 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-19 21:30:11,506 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-19 21:30:11,506 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-19 21:30:11,506 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-19 21:30:11,506 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-19 21:30:11,507 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-19 21:30:11,507 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-19 21:30:11,507 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-19 21:30:11,507 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-19 21:30:11,507 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-19 21:30:11,507 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-19 21:30:11,507 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-19 21:30:11,508 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-19 21:30:11,508 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-19 21:30:11,508 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-19 21:30:11,508 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-19 21:30:11,508 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-19 21:30:11,508 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-19 21:30:11,508 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-19 21:30:11,508 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-19 21:30:11,509 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-19 21:30:11,509 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-19 21:30:11,509 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-19 21:30:11,509 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-19 21:30:11,509 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-19 21:30:11,509 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-19 21:30:11,510 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-19 21:30:11,510 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-19 21:30:11,510 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-19 21:30:11,510 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-19 21:30:11,510 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-19 21:30:11,510 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-19 21:30:11,510 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-19 21:30:11,511 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-19 21:30:11,511 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-19 21:30:11,511 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-19 21:30:11,511 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-19 21:30:11,511 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-19 21:30:11,511 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-19 21:30:11,512 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-19 21:30:11,512 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-19 21:30:11,512 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-19 21:30:11,512 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-19 21:30:11,512 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-19 21:30:11,512 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-19 21:30:11,512 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-19 21:30:11,512 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-19 21:30:11,512 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-19 21:30:11,512 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-19 21:30:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-19 21:30:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-19 21:30:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-19 21:30:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-19 21:30:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-19 21:30:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-19 21:30:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-19 21:30:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-19 21:30:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-19 21:30:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-19 21:30:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-19 21:30:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-19 21:30:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-19 21:30:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-19 21:30:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-19 21:30:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-19 21:30:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 21:30:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-07-19 21:30:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-07-19 21:30:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-19 21:30:11,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-19 21:30:11,516 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-07-19 21:30:11,516 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-07-19 21:30:11,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-19 21:30:11,516 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-07-19 21:30:11,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-19 21:30:11,517 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-07-19 21:30:11,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-19 21:30:11,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 21:30:11,517 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-07-19 21:30:11,517 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-07-19 21:30:11,517 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-07-19 21:30:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-07-19 21:30:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-07-19 21:30:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-07-19 21:30:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-07-19 21:30:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-07-19 21:30:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-07-19 21:30:11,519 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-07-19 21:30:11,519 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-07-19 21:30:11,519 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 21:30:11,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 21:30:11,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 21:30:12,399 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 21:30:12,400 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-07-19 21:30:12,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:30:12 BoogieIcfgContainer [2020-07-19 21:30:12,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 21:30:12,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 21:30:12,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 21:30:12,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 21:30:12,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:30:10" (1/3) ... [2020-07-19 21:30:12,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b83e36a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:30:12, skipping insertion in model container [2020-07-19 21:30:12,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:11" (2/3) ... [2020-07-19 21:30:12,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b83e36a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:30:12, skipping insertion in model container [2020-07-19 21:30:12,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:30:12" (3/3) ... [2020-07-19 21:30:12,415 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2020-07-19 21:30:12,425 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 21:30:12,433 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 21:30:12,446 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 21:30:12,472 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 21:30:12,472 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 21:30:12,472 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 21:30:12,472 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 21:30:12,473 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 21:30:12,473 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 21:30:12,473 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 21:30:12,473 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 21:30:12,498 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-07-19 21:30:12,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-07-19 21:30:12,507 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:30:12,509 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-19 21:30:12,509 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:30:12,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:30:12,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-07-19 21:30:12,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:30:12,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745428815] [2020-07-19 21:30:12,527 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4cec3e29 [2020-07-19 21:30:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:12,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:12,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:12,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:12,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:12,985 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-19 21:30:12,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745428815] [2020-07-19 21:30:12,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:30:12,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 21:30:12,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841534326] [2020-07-19 21:30:12,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 21:30:12,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:30:13,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 21:30:13,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 21:30:13,016 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-07-19 21:30:13,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:30:13,457 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-07-19 21:30:13,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 21:30:13,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-07-19 21:30:13,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:30:13,474 INFO L225 Difference]: With dead ends: 343 [2020-07-19 21:30:13,474 INFO L226 Difference]: Without dead ends: 166 [2020-07-19 21:30:13,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-19 21:30:13,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-07-19 21:30:13,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-07-19 21:30:13,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-07-19 21:30:13,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-07-19 21:30:13,554 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-07-19 21:30:13,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:30:13,555 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-07-19 21:30:13,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 21:30:13,555 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-07-19 21:30:13,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-07-19 21:30:13,558 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:30:13,559 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-19 21:30:13,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 21:30:13,560 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:30:13,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:30:13,560 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-07-19 21:30:13,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:30:13,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320383955] [2020-07-19 21:30:13,561 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4cec3e29 [2020-07-19 21:30:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:13,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:14,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:14,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:14,202 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-07-19 21:30:14,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320383955] [2020-07-19 21:30:14,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568268739] [2020-07-19 21:30:14,203 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4cec3e29 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 [2020-07-19 21:30:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:14,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-19 21:30:14,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 21:30:14,474 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-07-19 21:30:14,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 21:30:14,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5] total 13 [2020-07-19 21:30:14,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464654579] [2020-07-19 21:30:14,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-19 21:30:14,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:30:14,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-19 21:30:14,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-07-19 21:30:14,478 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 13 states. [2020-07-19 21:30:15,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:30:15,622 INFO L93 Difference]: Finished difference Result 327 states and 406 transitions. [2020-07-19 21:30:15,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-19 21:30:15,629 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-07-19 21:30:15,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:30:15,632 INFO L225 Difference]: With dead ends: 327 [2020-07-19 21:30:15,632 INFO L226 Difference]: Without dead ends: 179 [2020-07-19 21:30:15,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 76 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-07-19 21:30:15,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-07-19 21:30:15,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-07-19 21:30:15,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-07-19 21:30:15,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-07-19 21:30:15,666 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-07-19 21:30:15,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:30:15,667 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-07-19 21:30:15,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-19 21:30:15,667 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-07-19 21:30:15,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-07-19 21:30:15,677 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:30:15,678 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:30:15,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-19 21:30:15,894 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:30:15,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:30:15,895 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-07-19 21:30:15,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:30:15,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123529753] [2020-07-19 21:30:15,896 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4cec3e29 [2020-07-19 21:30:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:16,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:16,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:16,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:16,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:16,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:16,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:17,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:17,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:17,206 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-07-19 21:30:17,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123529753] [2020-07-19 21:30:17,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867676540] [2020-07-19 21:30:17,207 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4cec3e29 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 [2020-07-19 21:30:17,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:17,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 48 conjunts are in the unsatisfiable core [2020-07-19 21:30:17,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 21:30:17,741 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:30:17,742 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 31 treesize of output 47 [2020-07-19 21:30:17,743 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 21:30:17,772 INFO L624 ElimStorePlain]: treesize reduction 20, result has 60.8 percent of original size [2020-07-19 21:30:17,774 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 21:30:17,775 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:36, output treesize:8 [2020-07-19 21:30:17,878 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 16 treesize of output 8 [2020-07-19 21:30:17,879 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 21:30:17,881 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:30:17,881 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 21:30:17,881 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:4 [2020-07-19 21:30:18,017 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-07-19 21:30:18,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 21:30:18,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21] total 32 [2020-07-19 21:30:18,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022527079] [2020-07-19 21:30:18,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-07-19 21:30:18,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:30:18,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-07-19 21:30:18,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=922, Unknown=0, NotChecked=0, Total=992 [2020-07-19 21:30:18,020 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 32 states. [2020-07-19 21:30:20,065 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2020-07-19 21:30:22,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:30:22,482 INFO L93 Difference]: Finished difference Result 411 states and 498 transitions. [2020-07-19 21:30:22,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-07-19 21:30:22,483 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 154 [2020-07-19 21:30:22,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:30:22,487 INFO L225 Difference]: With dead ends: 411 [2020-07-19 21:30:22,488 INFO L226 Difference]: Without dead ends: 249 [2020-07-19 21:30:22,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=251, Invalid=2829, Unknown=0, NotChecked=0, Total=3080 [2020-07-19 21:30:22,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-07-19 21:30:22,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 205. [2020-07-19 21:30:22,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-07-19 21:30:22,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 243 transitions. [2020-07-19 21:30:22,515 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 243 transitions. Word has length 154 [2020-07-19 21:30:22,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:30:22,515 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 243 transitions. [2020-07-19 21:30:22,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-07-19 21:30:22,516 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 243 transitions. [2020-07-19 21:30:22,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-07-19 21:30:22,517 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:30:22,517 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-19 21:30:22,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 21:30:22,731 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:30:22,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:30:22,732 INFO L82 PathProgramCache]: Analyzing trace with hash -477532124, now seen corresponding path program 1 times [2020-07-19 21:30:22,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:30:22,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365592562] [2020-07-19 21:30:22,734 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4cec3e29 [2020-07-19 21:30:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:23,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:23,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:23,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:23,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:23,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:23,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:23,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:24,044 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 16 proven. 93 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-07-19 21:30:24,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365592562] [2020-07-19 21:30:24,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310289408] [2020-07-19 21:30:24,054 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4cec3e29 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 [2020-07-19 21:30:24,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:24,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 62 conjunts are in the unsatisfiable core [2020-07-19 21:30:24,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 21:30:24,354 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 11 treesize of output 7 [2020-07-19 21:30:24,354 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 21:30:24,359 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:30:24,360 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 21:30:24,360 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:8 [2020-07-19 21:30:24,373 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 8 treesize of output 4 [2020-07-19 21:30:24,374 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 21:30:24,378 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:30:24,379 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 21:30:24,381 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:3 [2020-07-19 21:30:26,581 WARN L860 $PredicateComparison]: unable to prove that (exists ((alloc_or_die_slave_~ptr~0.offset Int) (alloc_or_die_slave_~ptr~0.base Int)) (and (<= (+ alloc_or_die_slave_~ptr~0.base 1) |c_#StackHeapBarrier|) (= (select (select (store |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base (store (select |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base) alloc_or_die_slave_~ptr~0.offset 0)) |c_dll_insert_slave_#in~dll.base|) |c_dll_insert_slave_#in~dll.offset|) c_dll_insert_slave_~next~0.base))) is different from true [2020-07-19 21:30:27,894 WARN L860 $PredicateComparison]: unable to prove that (exists ((alloc_or_die_slave_~ptr~0.offset Int) (alloc_or_die_slave_~ptr~0.base Int)) (and (<= (+ alloc_or_die_slave_~ptr~0.base 1) |c_#StackHeapBarrier|) (= 0 (select (select (store |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base (store (select |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base) alloc_or_die_slave_~ptr~0.offset 0)) |c_dll_insert_slave_#in~dll.base|) |c_dll_insert_slave_#in~dll.offset|)))) is different from true [2020-07-19 21:30:29,251 WARN L860 $PredicateComparison]: unable to prove that (exists ((alloc_or_die_slave_~ptr~0.offset Int) (alloc_or_die_slave_~ptr~0.base Int)) (and (<= (+ alloc_or_die_slave_~ptr~0.base 1) |c_#StackHeapBarrier|) (= 0 (select (select (store |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base (store (select |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base) alloc_or_die_slave_~ptr~0.offset 0)) |c_##fun~$Pointer$~TO~VOID_#in~9.base|) |c_##fun~$Pointer$~TO~VOID_#in~9.offset|)))) is different from true [2020-07-19 21:30:29,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-19 21:30:29,282 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 21:30:29,283 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:30:29,283 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 21:30:29,283 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:34, output treesize:1 [2020-07-19 21:30:29,326 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 108 proven. 5 refuted. 0 times theorem prover too weak. 61 trivial. 6 not checked. [2020-07-19 21:30:29,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 21:30:29,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 30 [2020-07-19 21:30:29,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328743996] [2020-07-19 21:30:29,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-07-19 21:30:29,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:30:29,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-07-19 21:30:29,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=631, Unknown=3, NotChecked=156, Total=870 [2020-07-19 21:30:29,330 INFO L87 Difference]: Start difference. First operand 205 states and 243 transitions. Second operand 30 states. [2020-07-19 21:30:33,985 WARN L193 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 40 DAG size of output: 34 [2020-07-19 21:30:39,393 WARN L193 SmtUtils]: Spent 3.20 s on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-07-19 21:30:43,162 WARN L193 SmtUtils]: Spent 3.68 s on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2020-07-19 21:30:45,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:30:45,128 INFO L93 Difference]: Finished difference Result 414 states and 502 transitions. [2020-07-19 21:30:45,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-07-19 21:30:45,129 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 157 [2020-07-19 21:30:45,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:30:45,133 INFO L225 Difference]: With dead ends: 414 [2020-07-19 21:30:45,133 INFO L226 Difference]: Without dead ends: 226 [2020-07-19 21:30:45,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 194 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=221, Invalid=1767, Unknown=4, NotChecked=264, Total=2256 [2020-07-19 21:30:45,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-07-19 21:30:45,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 213. [2020-07-19 21:30:45,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-07-19 21:30:45,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 252 transitions. [2020-07-19 21:30:45,160 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 252 transitions. Word has length 157 [2020-07-19 21:30:45,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:30:45,160 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 252 transitions. [2020-07-19 21:30:45,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-07-19 21:30:45,161 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 252 transitions. [2020-07-19 21:30:45,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-07-19 21:30:45,164 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:30:45,164 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-19 21:30:45,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 21:30:45,365 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:30:45,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:30:45,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-07-19 21:30:45,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:30:45,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943719002] [2020-07-19 21:30:45,367 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4cec3e29 [2020-07-19 21:30:45,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:46,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:46,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:46,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:46,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:46,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:46,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:47,487 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2020-07-19 21:30:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:48,704 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-07-19 21:30:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:04,283 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 164 DAG size of output: 43 [2020-07-19 21:39:17,311 WARN L193 SmtUtils]: Spent 7.54 m on a formula simplification. DAG size of input: 9145 DAG size of output: 29 [2020-07-19 21:41:58,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:42:01,038 WARN L193 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 308 DAG size of output: 42 [2020-07-19 21:42:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:42:03,576 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 38 [2020-07-19 21:42:04,293 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 29 [2020-07-19 21:42:05,119 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 25 [2020-07-19 21:42:11,719 WARN L193 SmtUtils]: Spent 4.24 s on a formula simplification. DAG size of input: 649 DAG size of output: 36 [2020-07-19 21:42:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:42:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat