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/seq-pthread/cs_lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:48:57,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:48:57,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:48:57,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:48:57,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:48:57,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:48:57,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:48:57,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:48:57,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:48:57,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:48:57,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:48:57,975 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:48:57,975 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:48:57,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:48:57,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:48:57,978 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:48:57,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:48:57,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:48:57,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:48:57,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:48:57,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:48:57,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:48:57,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:48:57,988 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:48:57,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:48:57,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:48:57,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:48:57,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:48:57,992 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:48:57,993 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:48:57,993 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:48:57,994 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:48:57,995 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:48:57,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:48:57,996 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:48:57,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:48:57,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:48:57,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:48:57,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:48:57,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:48:58,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:48:58,002 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 [2019-10-14 23:48:58,023 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:48:58,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:48:58,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:48:58,025 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:48:58,026 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:48:58,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:48:58,026 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:48:58,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:48:58,026 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:48:58,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:48:58,028 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:48:58,028 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:48:58,028 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:48:58,029 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:48:58,029 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:48:58,029 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:48:58,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:48:58,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:48:58,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:48:58,030 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:48:58,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:48:58,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:48:58,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:48:58,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:48:58,031 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:48:58,031 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:48:58,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:48:58,031 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:48:58,032 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:48:58,318 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:48:58,340 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:48:58,345 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:48:58,346 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:48:58,347 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:48:58,347 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-pthread/cs_lamport.i [2019-10-14 23:48:58,426 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f9fdf04a/3fbe3c201b4746319703fc0c26e3afa1/FLAG8b2449d2c [2019-10-14 23:48:59,060 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:48:59,061 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_lamport.i [2019-10-14 23:48:59,086 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f9fdf04a/3fbe3c201b4746319703fc0c26e3afa1/FLAG8b2449d2c [2019-10-14 23:48:59,274 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f9fdf04a/3fbe3c201b4746319703fc0c26e3afa1 [2019-10-14 23:48:59,283 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:48:59,285 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:48:59,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:48:59,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:48:59,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:48:59,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:48:59" (1/1) ... [2019-10-14 23:48:59,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45859c5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:48:59, skipping insertion in model container [2019-10-14 23:48:59,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:48:59" (1/1) ... [2019-10-14 23:48:59,301 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:48:59,356 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:49:00,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:49:00,020 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:49:00,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:49:00,224 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:49:00,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:00 WrapperNode [2019-10-14 23:49:00,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:49:00,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:49:00,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:49:00,227 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:49:00,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:00" (1/1) ... [2019-10-14 23:49:00,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:00" (1/1) ... [2019-10-14 23:49:00,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:00" (1/1) ... [2019-10-14 23:49:00,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:00" (1/1) ... [2019-10-14 23:49:00,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:00" (1/1) ... [2019-10-14 23:49:00,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:00" (1/1) ... [2019-10-14 23:49:00,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:00" (1/1) ... [2019-10-14 23:49:00,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:49:00,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:49:00,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:49:00,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:49:00,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:00" (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 [2019-10-14 23:49:00,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:49:00,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:49:00,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2019-10-14 23:49:00,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-14 23:49:00,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-14 23:49:00,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-10-14 23:49:00,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-10-14 23:49:00,446 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-10-14 23:49:00,446 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 23:49:00,446 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2019-10-14 23:49:00,446 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_init [2019-10-14 23:49:00,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_destroy [2019-10-14 23:49:00,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2019-10-14 23:49:00,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2019-10-14 23:49:00,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_init [2019-10-14 23:49:00,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_signal [2019-10-14 23:49:00,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_broadcast [2019-10-14 23:49:00,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_wait [2019-10-14 23:49:00,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_assert [2019-10-14 23:49:00,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_assume [2019-10-14 23:49:00,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2019-10-14 23:49:00,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2019-10-14 23:49:00,449 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-10-14 23:49:00,449 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2019-10-14 23:49:00,450 INFO L138 BoogieDeclarations]: Found implementation of procedure main_thread [2019-10-14 23:49:00,450 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:49:00,450 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:49:00,450 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-14 23:49:00,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-10-14 23:49:00,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 23:49:00,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:49:00,451 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-14 23:49:00,451 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-14 23:49:00,452 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-14 23:49:00,452 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-14 23:49:00,452 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-14 23:49:00,452 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-14 23:49:00,452 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-14 23:49:00,452 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-14 23:49:00,453 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-14 23:49:00,453 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-14 23:49:00,453 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-14 23:49:00,453 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-14 23:49:00,453 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-14 23:49:00,454 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-14 23:49:00,454 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-14 23:49:00,454 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-14 23:49:00,454 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-14 23:49:00,454 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-14 23:49:00,454 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-10-14 23:49:00,455 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-10-14 23:49:00,455 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-10-14 23:49:00,455 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-14 23:49:00,455 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-14 23:49:00,455 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-14 23:49:00,455 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-14 23:49:00,455 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-14 23:49:00,456 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-14 23:49:00,456 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-14 23:49:00,456 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-14 23:49:00,456 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-14 23:49:00,456 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-14 23:49:00,456 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-14 23:49:00,457 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-14 23:49:00,457 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-14 23:49:00,457 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-14 23:49:00,457 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-14 23:49:00,457 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-14 23:49:00,458 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-14 23:49:00,458 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-14 23:49:00,458 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-14 23:49:00,458 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-14 23:49:00,458 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-14 23:49:00,458 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-14 23:49:00,459 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-14 23:49:00,459 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-14 23:49:00,459 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-14 23:49:00,459 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-14 23:49:00,459 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-14 23:49:00,460 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-14 23:49:00,460 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-14 23:49:00,460 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-14 23:49:00,460 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-14 23:49:00,460 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-14 23:49:00,461 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-14 23:49:00,461 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-14 23:49:00,461 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:49:00,461 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-14 23:49:00,461 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-14 23:49:00,461 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:49:00,462 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-14 23:49:00,462 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-14 23:49:00,462 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-14 23:49:00,462 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-14 23:49:00,462 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-14 23:49:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-14 23:49:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-14 23:49:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-14 23:49:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:49:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-14 23:49:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-14 23:49:00,464 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-14 23:49:00,464 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-14 23:49:00,464 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-14 23:49:00,464 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-14 23:49:00,464 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-14 23:49:00,465 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-14 23:49:00,465 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-14 23:49:00,465 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-14 23:49:00,465 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-14 23:49:00,465 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-14 23:49:00,465 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-14 23:49:00,466 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-14 23:49:00,466 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-14 23:49:00,466 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-14 23:49:00,466 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-14 23:49:00,466 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-14 23:49:00,467 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-14 23:49:00,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-14 23:49:00,467 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-14 23:49:00,467 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-14 23:49:00,467 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-14 23:49:00,467 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-14 23:49:00,468 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-14 23:49:00,468 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-14 23:49:00,468 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-14 23:49:00,468 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-14 23:49:00,468 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-14 23:49:00,469 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-14 23:49:00,469 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-14 23:49:00,469 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-14 23:49:00,469 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-14 23:49:00,469 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-14 23:49:00,469 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-14 23:49:00,470 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-14 23:49:00,470 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-14 23:49:00,470 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-14 23:49:00,470 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-14 23:49:00,470 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:49:00,470 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2019-10-14 23:49:00,471 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2019-10-14 23:49:00,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:49:00,471 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2019-10-14 23:49:00,471 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_init [2019-10-14 23:49:00,471 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_destroy [2019-10-14 23:49:00,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:49:00,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:49:00,472 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2019-10-14 23:49:00,472 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2019-10-14 23:49:00,472 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_init [2019-10-14 23:49:00,473 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_signal [2019-10-14 23:49:00,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:49:00,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:49:00,473 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_broadcast [2019-10-14 23:49:00,473 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_wait [2019-10-14 23:49:00,474 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_assert [2019-10-14 23:49:00,474 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_assume [2019-10-14 23:49:00,474 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2019-10-14 23:49:00,474 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2019-10-14 23:49:00,474 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-10-14 23:49:00,474 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2019-10-14 23:49:00,475 INFO L130 BoogieDeclarations]: Found specification of procedure main_thread [2019-10-14 23:49:00,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:49:00,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:49:00,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:49:00,475 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:49:00,475 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2019-10-14 23:49:00,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:49:00,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-14 23:49:00,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:49:01,397 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##93: assume !(0 != ~__CS_ret~0 % 256); [2019-10-14 23:49:01,397 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##92: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-10-14 23:49:01,397 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##83: assume !(0 != ~__CS_ret~0 % 256); [2019-10-14 23:49:01,398 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##82: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-10-14 23:49:01,398 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !(0 != ~__CS_ret~0 % 256); [2019-10-14 23:49:01,398 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-10-14 23:49:01,398 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##34: assume !(0 != ~__CS_ret~0 % 256); [2019-10-14 23:49:01,398 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##33: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-10-14 23:49:01,613 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##93: assume !(0 != ~__CS_ret~0 % 256); [2019-10-14 23:49:01,613 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##92: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-10-14 23:49:01,613 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##83: assume !(0 != ~__CS_ret~0 % 256); [2019-10-14 23:49:01,613 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##82: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-10-14 23:49:01,614 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !(0 != ~__CS_ret~0 % 256); [2019-10-14 23:49:01,614 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-10-14 23:49:01,614 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##34: assume !(0 != ~__CS_ret~0 % 256); [2019-10-14 23:49:01,614 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##33: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-10-14 23:49:04,298 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:49:04,298 INFO L284 CfgBuilder]: Removed 12 assume(true) statements. [2019-10-14 23:49:04,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:49:04 BoogieIcfgContainer [2019-10-14 23:49:04,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:49:04,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:49:04,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:49:04,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:49:04,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:48:59" (1/3) ... [2019-10-14 23:49:04,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8977fee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:49:04, skipping insertion in model container [2019-10-14 23:49:04,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:00" (2/3) ... [2019-10-14 23:49:04,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8977fee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:49:04, skipping insertion in model container [2019-10-14 23:49:04,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:49:04" (3/3) ... [2019-10-14 23:49:04,308 INFO L109 eAbstractionObserver]: Analyzing ICFG cs_lamport.i [2019-10-14 23:49:04,319 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:49:04,330 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:49:04,342 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:49:04,370 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:49:04,370 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:49:04,370 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:49:04,370 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:49:04,370 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:49:04,370 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:49:04,371 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:49:04,371 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:49:04,396 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2019-10-14 23:49:04,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-14 23:49:04,403 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:49:04,404 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:49:04,407 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:49:04,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:49:04,413 INFO L82 PathProgramCache]: Analyzing trace with hash 726859242, now seen corresponding path program 1 times [2019-10-14 23:49:04,423 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:49:04,423 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32443911] [2019-10-14 23:49:04,423 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:04,424 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:04,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:49:04,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:05,050 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-10-14 23:49:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:05,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:49:05,087 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32443911] [2019-10-14 23:49:05,088 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:49:05,088 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:49:05,088 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121962550] [2019-10-14 23:49:05,094 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:49:05,094 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:49:05,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:49:05,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:49:05,114 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 4 states. [2019-10-14 23:49:07,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:49:07,776 INFO L93 Difference]: Finished difference Result 162 states and 227 transitions. [2019-10-14 23:49:07,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:49:07,777 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-10-14 23:49:07,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:49:07,790 INFO L225 Difference]: With dead ends: 162 [2019-10-14 23:49:07,790 INFO L226 Difference]: Without dead ends: 81 [2019-10-14 23:49:07,794 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:49:07,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2019-10-14 23:49:07,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74. [2019-10-14 23:49:07,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2019-10-14 23:49:07,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 100 transitions. [2019-10-14 23:49:07,855 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 100 transitions. Word has length 18 [2019-10-14 23:49:07,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:49:07,855 INFO L462 AbstractCegarLoop]: Abstraction has 74 states and 100 transitions. [2019-10-14 23:49:07,855 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:49:07,855 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 100 transitions. [2019-10-14 23:49:07,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-14 23:49:07,857 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:49:07,858 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:49:07,858 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:49:07,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:49:07,858 INFO L82 PathProgramCache]: Analyzing trace with hash 843535469, now seen corresponding path program 1 times [2019-10-14 23:49:07,859 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:49:07,859 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222399630] [2019-10-14 23:49:07,859 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:07,859 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:07,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:49:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:08,116 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-10-14 23:49:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:08,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:49:08,136 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222399630] [2019-10-14 23:49:08,136 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:49:08,136 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:49:08,136 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226123427] [2019-10-14 23:49:08,138 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:49:08,138 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:49:08,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:49:08,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:49:08,139 INFO L87 Difference]: Start difference. First operand 74 states and 100 transitions. Second operand 4 states. [2019-10-14 23:49:10,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:49:10,602 INFO L93 Difference]: Finished difference Result 147 states and 202 transitions. [2019-10-14 23:49:10,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:49:10,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2019-10-14 23:49:10,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:49:10,606 INFO L225 Difference]: With dead ends: 147 [2019-10-14 23:49:10,606 INFO L226 Difference]: Without dead ends: 80 [2019-10-14 23:49:10,608 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:49:10,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2019-10-14 23:49:10,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 75. [2019-10-14 23:49:10,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-10-14 23:49:10,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 101 transitions. [2019-10-14 23:49:10,623 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 101 transitions. Word has length 21 [2019-10-14 23:49:10,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:49:10,623 INFO L462 AbstractCegarLoop]: Abstraction has 75 states and 101 transitions. [2019-10-14 23:49:10,624 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:49:10,624 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 101 transitions. [2019-10-14 23:49:10,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-14 23:49:10,625 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:49:10,625 INFO L380 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] [2019-10-14 23:49:10,625 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:49:10,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:49:10,626 INFO L82 PathProgramCache]: Analyzing trace with hash -690091377, now seen corresponding path program 1 times [2019-10-14 23:49:10,626 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:49:10,626 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127477055] [2019-10-14 23:49:10,626 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:10,627 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:10,627 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:49:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:11,029 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-10-14 23:49:11,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:11,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-14 23:49:11,053 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127477055] [2019-10-14 23:49:11,053 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:49:11,053 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:49:11,054 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068270138] [2019-10-14 23:49:11,054 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:49:11,055 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:49:11,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:49:11,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:49:11,055 INFO L87 Difference]: Start difference. First operand 75 states and 101 transitions. Second operand 6 states. [2019-10-14 23:49:11,247 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2019-10-14 23:49:13,529 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2019-10-14 23:49:13,747 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-10-14 23:49:14,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:49:14,321 INFO L93 Difference]: Finished difference Result 143 states and 201 transitions. [2019-10-14 23:49:14,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:49:14,322 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2019-10-14 23:49:14,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:49:14,325 INFO L225 Difference]: With dead ends: 143 [2019-10-14 23:49:14,325 INFO L226 Difference]: Without dead ends: 135 [2019-10-14 23:49:14,326 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:49:14,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2019-10-14 23:49:14,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 129. [2019-10-14 23:49:14,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2019-10-14 23:49:14,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 182 transitions. [2019-10-14 23:49:14,363 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 182 transitions. Word has length 23 [2019-10-14 23:49:14,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:49:14,364 INFO L462 AbstractCegarLoop]: Abstraction has 129 states and 182 transitions. [2019-10-14 23:49:14,364 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:49:14,364 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 182 transitions. [2019-10-14 23:49:14,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-10-14 23:49:14,368 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:49:14,368 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:49:14,369 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:49:14,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:49:14,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1065445629, now seen corresponding path program 1 times [2019-10-14 23:49:14,369 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:49:14,369 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57111089] [2019-10-14 23:49:14,370 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:14,370 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:14,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:49:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:14,867 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-10-14 23:49:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:15,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:15,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:15,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:15,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:15,513 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-14 23:49:15,514 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57111089] [2019-10-14 23:49:15,514 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987848193] [2019-10-14 23:49:15,514 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 [2019-10-14 23:49:15,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:15,847 INFO L256 TraceCheckSpWp]: Trace formula consists of 913 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:49:15,860 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:49:15,952 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-14 23:49:15,952 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:49:15,953 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 4] total 22 [2019-10-14 23:49:15,953 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389665422] [2019-10-14 23:49:15,954 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-10-14 23:49:15,954 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:49:15,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-10-14 23:49:15,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2019-10-14 23:49:15,956 INFO L87 Difference]: Start difference. First operand 129 states and 182 transitions. Second operand 22 states. [2019-10-14 23:49:16,162 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-10-14 23:49:16,492 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-10-14 23:49:31,644 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-10-14 23:49:32,331 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-10-14 23:49:32,563 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2019-10-14 23:49:33,048 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-10-14 23:49:33,798 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-10-14 23:49:34,207 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-10-14 23:49:34,838 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-10-14 23:49:35,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:49:35,413 INFO L93 Difference]: Finished difference Result 414 states and 627 transitions. [2019-10-14 23:49:35,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-10-14 23:49:35,414 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 80 [2019-10-14 23:49:35,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:49:35,419 INFO L225 Difference]: With dead ends: 414 [2019-10-14 23:49:35,420 INFO L226 Difference]: Without dead ends: 292 [2019-10-14 23:49:35,423 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=415, Invalid=2665, Unknown=0, NotChecked=0, Total=3080 [2019-10-14 23:49:35,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2019-10-14 23:49:35,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 264. [2019-10-14 23:49:35,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2019-10-14 23:49:35,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 388 transitions. [2019-10-14 23:49:35,479 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 388 transitions. Word has length 80 [2019-10-14 23:49:35,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:49:35,479 INFO L462 AbstractCegarLoop]: Abstraction has 264 states and 388 transitions. [2019-10-14 23:49:35,479 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-10-14 23:49:35,480 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 388 transitions. [2019-10-14 23:49:35,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-10-14 23:49:35,485 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:49:35,485 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:49:35,691 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:49:35,692 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:49:35,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:49:35,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1010069604, now seen corresponding path program 1 times [2019-10-14 23:49:35,692 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:49:35,693 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041328266] [2019-10-14 23:49:35,693 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:35,693 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:35,693 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:49:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:36,040 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-10-14 23:49:36,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:36,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:36,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:36,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:36,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:36,702 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-14 23:49:36,703 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041328266] [2019-10-14 23:49:36,703 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224789105] [2019-10-14 23:49:36,703 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 [2019-10-14 23:49:37,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:37,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 930 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 23:49:37,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:49:37,084 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-14 23:49:37,084 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:49:37,084 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 5] total 23 [2019-10-14 23:49:37,085 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206200516] [2019-10-14 23:49:37,085 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-10-14 23:49:37,086 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:49:37,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-10-14 23:49:37,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2019-10-14 23:49:37,087 INFO L87 Difference]: Start difference. First operand 264 states and 388 transitions. Second operand 23 states. [2019-10-14 23:49:37,260 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-10-14 23:49:37,491 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 129