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_time_var_mutex.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:50:07,176 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:50:07,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:50:07,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:50:07,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:50:07,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:50:07,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:50:07,210 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:50:07,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:50:07,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:50:07,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:50:07,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:50:07,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:50:07,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:50:07,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:50:07,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:50:07,226 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:50:07,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:50:07,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:50:07,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:50:07,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:50:07,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:50:07,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:50:07,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:50:07,245 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:50:07,245 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:50:07,245 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:50:07,247 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:50:07,248 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:50:07,249 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:50:07,249 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:50:07,250 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:50:07,250 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:50:07,251 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:50:07,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:50:07,253 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:50:07,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:50:07,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:50:07,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:50:07,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:50:07,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:50:07,256 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 [2019-10-13 19:50:07,283 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:50:07,283 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:50:07,285 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:50:07,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:50:07,286 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:50:07,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:50:07,286 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:50:07,286 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:50:07,287 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:50:07,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:50:07,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:50:07,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:50:07,288 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:50:07,289 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:50:07,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:50:07,289 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:50:07,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:50:07,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:50:07,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:50:07,290 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:50:07,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:50:07,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:50:07,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:50:07,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:50:07,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:50:07,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:50:07,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:50:07,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:50:07,291 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:50:07,549 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:50:07,568 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:50:07,571 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:50:07,573 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:50:07,573 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:50:07,574 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-pthread/cs_time_var_mutex.i [2019-10-13 19:50:07,642 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdfe5b2c3/b803dbdd1ebb4730bd4ddd890f3462c4/FLAGb30e237ab [2019-10-13 19:50:08,224 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:50:08,225 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_time_var_mutex.i [2019-10-13 19:50:08,248 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdfe5b2c3/b803dbdd1ebb4730bd4ddd890f3462c4/FLAGb30e237ab [2019-10-13 19:50:08,536 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdfe5b2c3/b803dbdd1ebb4730bd4ddd890f3462c4 [2019-10-13 19:50:08,544 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:50:08,545 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:50:08,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:50:08,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:50:08,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:50:08,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:50:08" (1/1) ... [2019-10-13 19:50:08,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e8fdd99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:08, skipping insertion in model container [2019-10-13 19:50:08,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:50:08" (1/1) ... [2019-10-13 19:50:08,561 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:50:08,625 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:50:09,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:50:09,251 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:50:09,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:50:09,455 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:50:09,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:09 WrapperNode [2019-10-13 19:50:09,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:50:09,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:50:09,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:50:09,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:50:09,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:09" (1/1) ... [2019-10-13 19:50:09,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:09" (1/1) ... [2019-10-13 19:50:09,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:09" (1/1) ... [2019-10-13 19:50:09,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:09" (1/1) ... [2019-10-13 19:50:09,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:09" (1/1) ... [2019-10-13 19:50:09,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:09" (1/1) ... [2019-10-13 19:50:09,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:09" (1/1) ... [2019-10-13 19:50:09,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:50:09,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:50:09,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:50:09,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:50:09,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:09" (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 [2019-10-13 19:50:09,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:50:09,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:50:09,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2019-10-13 19:50:09,669 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-13 19:50:09,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-13 19:50:09,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-10-13 19:50:09,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-10-13 19:50:09,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-10-13 19:50:09,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 19:50:09,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2019-10-13 19:50:09,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_init [2019-10-13 19:50:09,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_destroy [2019-10-13 19:50:09,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2019-10-13 19:50:09,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2019-10-13 19:50:09,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_init [2019-10-13 19:50:09,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_signal [2019-10-13 19:50:09,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_broadcast [2019-10-13 19:50:09,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_wait [2019-10-13 19:50:09,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_assert [2019-10-13 19:50:09,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_assume [2019-10-13 19:50:09,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2019-10-13 19:50:09,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2019-10-13 19:50:09,677 INFO L138 BoogieDeclarations]: Found implementation of procedure allocator [2019-10-13 19:50:09,678 INFO L138 BoogieDeclarations]: Found implementation of procedure de_allocator [2019-10-13 19:50:09,678 INFO L138 BoogieDeclarations]: Found implementation of procedure main_thread [2019-10-13 19:50:09,678 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:50:09,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:50:09,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 19:50:09,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-10-13 19:50:09,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 19:50:09,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:50:09,679 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-13 19:50:09,680 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-13 19:50:09,680 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-13 19:50:09,680 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-13 19:50:09,680 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-13 19:50:09,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-13 19:50:09,681 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-13 19:50:09,681 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-13 19:50:09,681 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-13 19:50:09,681 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-13 19:50:09,682 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-13 19:50:09,682 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-13 19:50:09,683 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-13 19:50:09,683 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-13 19:50:09,683 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-13 19:50:09,684 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-13 19:50:09,684 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-13 19:50:09,684 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-13 19:50:09,684 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-10-13 19:50:09,684 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-10-13 19:50:09,684 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-10-13 19:50:09,685 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-13 19:50:09,685 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-13 19:50:09,685 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-13 19:50:09,685 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-13 19:50:09,685 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-13 19:50:09,685 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-13 19:50:09,686 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-13 19:50:09,686 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-13 19:50:09,686 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-13 19:50:09,686 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-13 19:50:09,686 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-13 19:50:09,686 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-13 19:50:09,687 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-13 19:50:09,687 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-13 19:50:09,687 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-13 19:50:09,687 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-13 19:50:09,687 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-13 19:50:09,687 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-13 19:50:09,688 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-13 19:50:09,688 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-13 19:50:09,688 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-13 19:50:09,688 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-13 19:50:09,688 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-13 19:50:09,689 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-13 19:50:09,689 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-13 19:50:09,689 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-13 19:50:09,689 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-13 19:50:09,689 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-13 19:50:09,689 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-13 19:50:09,689 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-13 19:50:09,689 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-13 19:50:09,690 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-13 19:50:09,690 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-13 19:50:09,690 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-13 19:50:09,690 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:50:09,690 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 19:50:09,691 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-13 19:50:09,691 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:50:09,691 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-13 19:50:09,691 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-13 19:50:09,691 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-13 19:50:09,691 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-13 19:50:09,692 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-13 19:50:09,692 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-13 19:50:09,692 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-13 19:50:09,692 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-13 19:50:09,692 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 19:50:09,693 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-13 19:50:09,693 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-13 19:50:09,693 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-13 19:50:09,693 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-13 19:50:09,693 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-13 19:50:09,693 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-13 19:50:09,693 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-13 19:50:09,693 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-13 19:50:09,694 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-13 19:50:09,694 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-13 19:50:09,694 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-13 19:50:09,694 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-13 19:50:09,694 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-13 19:50:09,694 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-13 19:50:09,694 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-13 19:50:09,694 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-13 19:50:09,694 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-13 19:50:09,695 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-13 19:50:09,695 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-13 19:50:09,695 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-13 19:50:09,695 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-13 19:50:09,695 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-13 19:50:09,696 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-13 19:50:09,696 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-13 19:50:09,696 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-13 19:50:09,696 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-13 19:50:09,696 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-13 19:50:09,697 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-13 19:50:09,697 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-13 19:50:09,697 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-13 19:50:09,697 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-13 19:50:09,697 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-13 19:50:09,697 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-13 19:50:09,698 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-13 19:50:09,698 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-13 19:50:09,698 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-13 19:50:09,698 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-13 19:50:09,698 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-13 19:50:09,698 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-13 19:50:09,699 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:50:09,699 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2019-10-13 19:50:09,699 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2019-10-13 19:50:09,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 19:50:09,699 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2019-10-13 19:50:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_init [2019-10-13 19:50:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_destroy [2019-10-13 19:50:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:50:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:50:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2019-10-13 19:50:09,701 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2019-10-13 19:50:09,701 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_init [2019-10-13 19:50:09,701 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_signal [2019-10-13 19:50:09,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:50:09,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:50:09,701 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_broadcast [2019-10-13 19:50:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_wait [2019-10-13 19:50:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_assert [2019-10-13 19:50:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_assume [2019-10-13 19:50:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2019-10-13 19:50:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2019-10-13 19:50:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure allocator [2019-10-13 19:50:09,703 INFO L130 BoogieDeclarations]: Found specification of procedure de_allocator [2019-10-13 19:50:09,703 INFO L130 BoogieDeclarations]: Found specification of procedure main_thread [2019-10-13 19:50:09,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:50:09,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:50:09,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:50:09,703 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:50:09,704 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2019-10-13 19:50:09,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:50:09,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 19:50:09,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:50:10,413 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume !(0 != ~__CS_ret~0 % 256); [2019-10-13 19:50:10,414 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##34: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-10-13 19:50:10,414 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !(0 != ~__CS_ret~0 % 256); [2019-10-13 19:50:10,414 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-10-13 19:50:10,507 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !(0 != ~__CS_ret~0 % 256); [2019-10-13 19:50:10,507 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-10-13 19:50:10,507 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !(0 != ~__CS_ret~0 % 256); [2019-10-13 19:50:10,508 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-10-13 19:50:13,207 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:50:13,208 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 19:50:13,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:50:13 BoogieIcfgContainer [2019-10-13 19:50:13,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:50:13,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:50:13,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:50:13,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:50:13,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:50:08" (1/3) ... [2019-10-13 19:50:13,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5617e45e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:50:13, skipping insertion in model container [2019-10-13 19:50:13,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:09" (2/3) ... [2019-10-13 19:50:13,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5617e45e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:50:13, skipping insertion in model container [2019-10-13 19:50:13,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:50:13" (3/3) ... [2019-10-13 19:50:13,217 INFO L109 eAbstractionObserver]: Analyzing ICFG cs_time_var_mutex.i [2019-10-13 19:50:13,226 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:50:13,235 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:50:13,246 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:50:13,272 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:50:13,272 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:50:13,272 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:50:13,272 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:50:13,272 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:50:13,273 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:50:13,273 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:50:13,273 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:50:13,295 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2019-10-13 19:50:13,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-13 19:50:13,300 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:50:13,301 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:50:13,303 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:50:13,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:50:13,308 INFO L82 PathProgramCache]: Analyzing trace with hash 912546732, now seen corresponding path program 1 times [2019-10-13 19:50:13,315 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:50:13,315 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058947049] [2019-10-13 19:50:13,316 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:50:13,316 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:50:13,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:50:13,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:14,030 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-10-13 19:50:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:14,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:50:14,063 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058947049] [2019-10-13 19:50:14,063 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:50:14,064 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:50:14,064 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26243501] [2019-10-13 19:50:14,069 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:50:14,069 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:50:14,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:50:14,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:50:14,088 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 4 states. [2019-10-13 19:50:16,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:50:16,843 INFO L93 Difference]: Finished difference Result 233 states and 329 transitions. [2019-10-13 19:50:16,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:50:16,844 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-10-13 19:50:16,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:50:16,864 INFO L225 Difference]: With dead ends: 233 [2019-10-13 19:50:16,865 INFO L226 Difference]: Without dead ends: 119 [2019-10-13 19:50:16,869 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 [2019-10-13 19:50:16,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2019-10-13 19:50:16,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 107. [2019-10-13 19:50:16,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-10-13 19:50:16,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 148 transitions. [2019-10-13 19:50:16,924 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 148 transitions. Word has length 18 [2019-10-13 19:50:16,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:50:16,925 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 148 transitions. [2019-10-13 19:50:16,925 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:50:16,925 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 148 transitions. [2019-10-13 19:50:16,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-13 19:50:16,927 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:50:16,927 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] [2019-10-13 19:50:16,928 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:50:16,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:50:16,928 INFO L82 PathProgramCache]: Analyzing trace with hash 980555822, now seen corresponding path program 1 times [2019-10-13 19:50:16,928 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:50:16,928 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073434346] [2019-10-13 19:50:16,929 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:50:16,929 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:50:16,929 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:50:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:17,128 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-10-13 19:50:17,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:17,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:50:17,159 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073434346] [2019-10-13 19:50:17,159 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:50:17,159 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:50:17,159 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620183781] [2019-10-13 19:50:17,170 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:50:17,171 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:50:17,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:50:17,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:50:17,172 INFO L87 Difference]: Start difference. First operand 107 states and 148 transitions. Second operand 4 states. [2019-10-13 19:50:19,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:50:19,752 INFO L93 Difference]: Finished difference Result 218 states and 304 transitions. [2019-10-13 19:50:19,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:50:19,753 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2019-10-13 19:50:19,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:50:19,756 INFO L225 Difference]: With dead ends: 218 [2019-10-13 19:50:19,756 INFO L226 Difference]: Without dead ends: 118 [2019-10-13 19:50:19,758 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 [2019-10-13 19:50:19,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2019-10-13 19:50:19,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 108. [2019-10-13 19:50:19,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2019-10-13 19:50:19,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 149 transitions. [2019-10-13 19:50:19,778 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 149 transitions. Word has length 21 [2019-10-13 19:50:19,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:50:19,779 INFO L462 AbstractCegarLoop]: Abstraction has 108 states and 149 transitions. [2019-10-13 19:50:19,779 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:50:19,779 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 149 transitions. [2019-10-13 19:50:19,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-13 19:50:19,780 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:50:19,780 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] [2019-10-13 19:50:19,780 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:50:19,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:50:19,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1457781136, now seen corresponding path program 1 times [2019-10-13 19:50:19,781 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:50:19,781 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007010704] [2019-10-13 19:50:19,782 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:50:19,782 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:50:19,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:50:19,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:20,211 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-10-13 19:50:20,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:20,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 19:50:20,233 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007010704] [2019-10-13 19:50:20,233 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:50:20,234 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:50:20,234 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854988316] [2019-10-13 19:50:20,234 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:50:20,234 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:50:20,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:50:20,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:50:20,235 INFO L87 Difference]: Start difference. First operand 108 states and 149 transitions. Second operand 6 states. [2019-10-13 19:50:20,403 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2019-10-13 19:50:22,694 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2019-10-13 19:50:22,841 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-10-13 19:50:23,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:50:23,676 INFO L93 Difference]: Finished difference Result 216 states and 307 transitions. [2019-10-13 19:50:23,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:50:23,677 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2019-10-13 19:50:23,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:50:23,681 INFO L225 Difference]: With dead ends: 216 [2019-10-13 19:50:23,681 INFO L226 Difference]: Without dead ends: 208 [2019-10-13 19:50:23,682 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:50:23,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2019-10-13 19:50:23,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 198. [2019-10-13 19:50:23,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2019-10-13 19:50:23,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 284 transitions. [2019-10-13 19:50:23,725 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 284 transitions. Word has length 23 [2019-10-13 19:50:23,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:50:23,725 INFO L462 AbstractCegarLoop]: Abstraction has 198 states and 284 transitions. [2019-10-13 19:50:23,726 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:50:23,726 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 284 transitions. [2019-10-13 19:50:23,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-13 19:50:23,731 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:50:23,731 INFO L380 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 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, 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] [2019-10-13 19:50:23,731 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:50:23,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:50:23,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1078103900, now seen corresponding path program 1 times [2019-10-13 19:50:23,732 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:50:23,732 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605126848] [2019-10-13 19:50:23,733 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:50:23,733 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:50:23,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:50:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:24,286 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-10-13 19:50:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:24,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:24,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:24,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:24,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:25,120 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-10-13 19:50:25,121 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605126848] [2019-10-13 19:50:25,121 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053242490] [2019-10-13 19:50:25,122 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 [2019-10-13 19:50:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:25,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 1059 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:50:25,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:50:25,524 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-10-13 19:50:25,525 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:50:25,525 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 4] total 24 [2019-10-13 19:50:25,526 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487256628] [2019-10-13 19:50:25,528 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-10-13 19:50:25,528 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:50:25,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-10-13 19:50:25,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2019-10-13 19:50:25,530 INFO L87 Difference]: Start difference. First operand 198 states and 284 transitions. Second operand 24 states. [2019-10-13 19:50:25,727 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-10-13 19:50:26,048 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-10-13 19:50:43,148 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-10-13 19:50:43,754 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-10-13 19:50:44,182 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-10-13 19:50:44,395 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2019-10-13 19:50:44,812 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-10-13 19:50:44,992 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-10-13 19:50:46,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:50:46,393 INFO L93 Difference]: Finished difference Result 506 states and 766 transitions. [2019-10-13 19:50:46,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-10-13 19:50:46,394 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 117 [2019-10-13 19:50:46,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:50:46,402 INFO L225 Difference]: With dead ends: 506 [2019-10-13 19:50:46,402 INFO L226 Difference]: Without dead ends: 315 [2019-10-13 19:50:46,411 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=345, Invalid=2205, Unknown=0, NotChecked=0, Total=2550 [2019-10-13 19:50:46,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2019-10-13 19:50:46,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 279. [2019-10-13 19:50:46,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2019-10-13 19:50:46,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 407 transitions. [2019-10-13 19:50:46,505 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 407 transitions. Word has length 117 [2019-10-13 19:50:46,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:50:46,508 INFO L462 AbstractCegarLoop]: Abstraction has 279 states and 407 transitions. [2019-10-13 19:50:46,508 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-10-13 19:50:46,508 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 407 transitions. [2019-10-13 19:50:46,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 19:50:46,522 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:50:46,522 INFO L380 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 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, 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] [2019-10-13 19:50:46,723 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:50:46,724 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:50:46,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:50:46,724 INFO L82 PathProgramCache]: Analyzing trace with hash 562323687, now seen corresponding path program 1 times [2019-10-13 19:50:46,724 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:50:46,724 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543012807] [2019-10-13 19:50:46,725 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:50:46,725 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:50:46,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:50:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:47,155 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-10-13 19:50:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:47,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:47,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:47,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:47,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:47,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:47,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:48,037 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2019-10-13 19:50:48,038 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543012807] [2019-10-13 19:50:48,038 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507286785] [2019-10-13 19:50:48,038 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 [2019-10-13 19:50:48,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:48,350 INFO L256 TraceCheckSpWp]: Trace formula consists of 1076 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 19:50:48,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:50:48,462 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-10-13 19:50:48,463 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:50:48,463 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 5] total 27 [2019-10-13 19:50:48,463 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642528720] [2019-10-13 19:50:48,465 INFO L442 AbstractCegarLoop]: Interpolant automaton has 27 states [2019-10-13 19:50:48,466 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:50:48,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2019-10-13 19:50:48,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2019-10-13 19:50:48,467 INFO L87 Difference]: Start difference. First operand 279 states and 407 transitions. Second operand 27 states. [2019-10-13 19:50:48,616 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-10-13 19:50:48,911 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 129