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 0.1.24-13a467a-m [2019-10-14 23:49:06,740 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:49:06,742 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:49:06,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:49:06,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:49:06,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:49:06,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:49:06,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:49:06,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:49:06,763 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:49:06,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:49:06,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:49:06,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:49:06,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:49:06,768 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:49:06,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:49:06,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:49:06,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:49:06,772 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:49:06,774 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:49:06,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:49:06,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:49:06,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:49:06,778 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:49:06,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:49:06,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:49:06,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:49:06,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:49:06,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:49:06,783 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:49:06,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:49:06,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:49:06,785 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:49:06,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:49:06,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:49:06,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:49:06,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:49:06,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:49:06,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:49:06,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:49:06,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:49:06,790 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 23:49:06,804 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:49:06,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:49:06,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:49:06,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:49:06,806 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:49:06,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:49:06,807 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:49:06,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:49:06,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:49:06,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:49:06,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:49:06,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:49:06,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:49:06,808 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:49:06,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:49:06,809 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:49:06,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:49:06,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:49:06,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:49:06,810 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:49:06,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:49:06,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:49:06,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:49:06,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:49:06,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:49:06,811 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:49:06,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:49:06,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:49:06,811 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:49:07,085 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:49:07,106 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:49:07,110 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:49:07,111 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:49:07,111 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:49:07,112 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-pthread/cs_time_var_mutex.i [2019-10-14 23:49:07,187 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4ae72d2e/15399fab8c144ffb88b8c892977080bb/FLAG70898d8e0 [2019-10-14 23:49:07,718 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:49:07,719 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_time_var_mutex.i [2019-10-14 23:49:07,735 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4ae72d2e/15399fab8c144ffb88b8c892977080bb/FLAG70898d8e0 [2019-10-14 23:49:08,008 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4ae72d2e/15399fab8c144ffb88b8c892977080bb [2019-10-14 23:49:08,021 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:49:08,023 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:49:08,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:49:08,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:49:08,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:49:08,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:49:08" (1/1) ... [2019-10-14 23:49:08,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c9bb3bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:08, skipping insertion in model container [2019-10-14 23:49:08,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:49:08" (1/1) ... [2019-10-14 23:49:08,038 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:49:08,110 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:49:08,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:49:08,729 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:49:08,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:49:08,929 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:49:08,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:08 WrapperNode [2019-10-14 23:49:08,930 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:49:08,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:49:08,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:49:08,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:49:08,945 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:08" (1/1) ... [2019-10-14 23:49:08,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:08" (1/1) ... [2019-10-14 23:49:08,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:08" (1/1) ... [2019-10-14 23:49:08,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:08" (1/1) ... [2019-10-14 23:49:09,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:08" (1/1) ... [2019-10-14 23:49:09,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:08" (1/1) ... [2019-10-14 23:49:09,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:08" (1/1) ... [2019-10-14 23:49:09,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:49:09,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:49:09,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:49:09,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:49:09,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:08" (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 23:49:09,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:49:09,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:49:09,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2019-10-14 23:49:09,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-14 23:49:09,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-14 23:49:09,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-10-14 23:49:09,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-10-14 23:49:09,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-10-14 23:49:09,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 23:49:09,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2019-10-14 23:49:09,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_init [2019-10-14 23:49:09,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_destroy [2019-10-14 23:49:09,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2019-10-14 23:49:09,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2019-10-14 23:49:09,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_init [2019-10-14 23:49:09,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_signal [2019-10-14 23:49:09,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_broadcast [2019-10-14 23:49:09,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_wait [2019-10-14 23:49:09,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_assert [2019-10-14 23:49:09,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_assume [2019-10-14 23:49:09,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2019-10-14 23:49:09,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2019-10-14 23:49:09,179 INFO L138 BoogieDeclarations]: Found implementation of procedure allocator [2019-10-14 23:49:09,179 INFO L138 BoogieDeclarations]: Found implementation of procedure de_allocator [2019-10-14 23:49:09,180 INFO L138 BoogieDeclarations]: Found implementation of procedure main_thread [2019-10-14 23:49:09,181 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:49:09,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:49:09,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-14 23:49:09,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-10-14 23:49:09,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 23:49:09,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:49:09,182 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-14 23:49:09,183 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-14 23:49:09,183 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-14 23:49:09,183 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-14 23:49:09,184 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-14 23:49:09,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-14 23:49:09,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-14 23:49:09,185 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-14 23:49:09,185 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-14 23:49:09,185 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-14 23:49:09,186 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-14 23:49:09,186 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-14 23:49:09,186 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-14 23:49:09,186 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-14 23:49:09,187 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-14 23:49:09,187 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-14 23:49:09,187 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-14 23:49:09,187 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-14 23:49:09,188 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-10-14 23:49:09,188 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-10-14 23:49:09,188 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-10-14 23:49:09,189 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-14 23:49:09,189 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-14 23:49:09,189 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-14 23:49:09,189 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-14 23:49:09,190 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-14 23:49:09,190 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-14 23:49:09,190 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-14 23:49:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-14 23:49:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-14 23:49:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-14 23:49:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-14 23:49:09,192 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-14 23:49:09,192 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-14 23:49:09,192 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-14 23:49:09,192 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-14 23:49:09,193 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-14 23:49:09,194 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-14 23:49:09,194 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-14 23:49:09,195 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-14 23:49:09,195 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-14 23:49:09,195 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-14 23:49:09,195 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-14 23:49:09,196 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-14 23:49:09,197 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-14 23:49:09,197 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-14 23:49:09,197 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-14 23:49:09,197 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-14 23:49:09,198 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-14 23:49:09,198 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-14 23:49:09,198 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-14 23:49:09,199 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-14 23:49:09,199 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-14 23:49:09,199 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-14 23:49:09,200 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-14 23:49:09,200 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:49:09,201 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-14 23:49:09,201 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-14 23:49:09,201 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:49:09,202 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-14 23:49:09,202 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-14 23:49:09,202 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-14 23:49:09,202 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-14 23:49:09,203 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-14 23:49:09,203 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-14 23:49:09,203 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-14 23:49:09,203 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-14 23:49:09,203 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:49:09,203 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-14 23:49:09,204 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-14 23:49:09,204 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-14 23:49:09,204 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-14 23:49:09,204 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-14 23:49:09,204 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-14 23:49:09,205 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-14 23:49:09,205 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-14 23:49:09,205 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-14 23:49:09,205 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-14 23:49:09,205 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-14 23:49:09,206 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-14 23:49:09,206 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-14 23:49:09,206 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-14 23:49:09,206 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-14 23:49:09,206 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-14 23:49:09,207 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-14 23:49:09,207 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-14 23:49:09,207 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-14 23:49:09,207 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-14 23:49:09,207 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-14 23:49:09,208 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-14 23:49:09,208 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-14 23:49:09,208 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-14 23:49:09,209 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-14 23:49:09,209 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-14 23:49:09,209 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-14 23:49:09,209 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-14 23:49:09,209 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-14 23:49:09,210 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-14 23:49:09,210 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-14 23:49:09,210 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-14 23:49:09,211 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-14 23:49:09,211 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-14 23:49:09,211 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-14 23:49:09,212 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-14 23:49:09,212 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-14 23:49:09,212 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-14 23:49:09,213 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-14 23:49:09,213 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:49:09,214 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2019-10-14 23:49:09,218 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2019-10-14 23:49:09,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:49:09,219 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2019-10-14 23:49:09,219 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_init [2019-10-14 23:49:09,227 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_destroy [2019-10-14 23:49:09,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:49:09,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:49:09,228 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2019-10-14 23:49:09,228 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2019-10-14 23:49:09,228 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_init [2019-10-14 23:49:09,229 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_signal [2019-10-14 23:49:09,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:49:09,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:49:09,230 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_broadcast [2019-10-14 23:49:09,230 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_wait [2019-10-14 23:49:09,230 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_assert [2019-10-14 23:49:09,230 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_assume [2019-10-14 23:49:09,230 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2019-10-14 23:49:09,231 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2019-10-14 23:49:09,231 INFO L130 BoogieDeclarations]: Found specification of procedure allocator [2019-10-14 23:49:09,231 INFO L130 BoogieDeclarations]: Found specification of procedure de_allocator [2019-10-14 23:49:09,231 INFO L130 BoogieDeclarations]: Found specification of procedure main_thread [2019-10-14 23:49:09,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:49:09,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:49:09,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:49:09,232 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:49:09,232 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2019-10-14 23:49:09,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:49:09,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-14 23:49:09,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:49:10,162 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume !(0 != ~__CS_ret~0 % 256); [2019-10-14 23:49:10,163 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##34: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-10-14 23:49:10,163 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !(0 != ~__CS_ret~0 % 256); [2019-10-14 23:49:10,163 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-10-14 23:49:10,261 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !(0 != ~__CS_ret~0 % 256); [2019-10-14 23:49:10,261 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-10-14 23:49:10,261 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !(0 != ~__CS_ret~0 % 256); [2019-10-14 23:49:10,261 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-10-14 23:49:12,908 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:49:12,908 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-14 23:49:12,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:49:12 BoogieIcfgContainer [2019-10-14 23:49:12,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:49:12,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:49:12,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:49:12,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:49:12,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:49:08" (1/3) ... [2019-10-14 23:49:12,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f3d14f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:49:12, skipping insertion in model container [2019-10-14 23:49:12,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:08" (2/3) ... [2019-10-14 23:49:12,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f3d14f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:49:12, skipping insertion in model container [2019-10-14 23:49:12,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:49:12" (3/3) ... [2019-10-14 23:49:12,917 INFO L109 eAbstractionObserver]: Analyzing ICFG cs_time_var_mutex.i [2019-10-14 23:49:12,927 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:49:12,939 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:49:12,950 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:49:12,980 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:49:12,980 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:49:12,980 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:49:12,980 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:49:12,980 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:49:12,981 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:49:12,981 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:49:12,981 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:49:13,010 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2019-10-14 23:49:13,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-14 23:49:13,019 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:49:13,020 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 23:49:13,022 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:49:13,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:49:13,028 INFO L82 PathProgramCache]: Analyzing trace with hash 912546732, now seen corresponding path program 1 times [2019-10-14 23:49:13,037 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:49:13,037 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137227330] [2019-10-14 23:49:13,038 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:13,038 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:13,038 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:49:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:13,669 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-10-14 23:49:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:13,724 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 23:49:13,725 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137227330] [2019-10-14 23:49:13,725 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:49:13,726 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:49:13,726 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551276679] [2019-10-14 23:49:13,730 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:49:13,731 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:49:13,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:49:13,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:49:13,747 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 4 states. [2019-10-14 23:49:16,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:49:16,536 INFO L93 Difference]: Finished difference Result 233 states and 329 transitions. [2019-10-14 23:49:16,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:49:16,538 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-10-14 23:49:16,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:49:16,563 INFO L225 Difference]: With dead ends: 233 [2019-10-14 23:49:16,563 INFO L226 Difference]: Without dead ends: 119 [2019-10-14 23:49:16,570 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:49:16,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2019-10-14 23:49:16,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 107. [2019-10-14 23:49:16,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-10-14 23:49:16,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 148 transitions. [2019-10-14 23:49:16,645 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 148 transitions. Word has length 18 [2019-10-14 23:49:16,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:49:16,645 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 148 transitions. [2019-10-14 23:49:16,645 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:49:16,646 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 148 transitions. [2019-10-14 23:49:16,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-14 23:49:16,647 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:49:16,648 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 23:49:16,648 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:49:16,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:49:16,648 INFO L82 PathProgramCache]: Analyzing trace with hash 980555822, now seen corresponding path program 1 times [2019-10-14 23:49:16,649 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:49:16,649 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822678057] [2019-10-14 23:49:16,649 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:16,649 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:16,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:49:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:16,856 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-10-14 23:49:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:16,895 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 23:49:16,896 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822678057] [2019-10-14 23:49:16,896 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:49:16,896 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:49:16,896 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125525853] [2019-10-14 23:49:16,898 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:49:16,900 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:49:16,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:49:16,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:49:16,901 INFO L87 Difference]: Start difference. First operand 107 states and 148 transitions. Second operand 4 states. [2019-10-14 23:49:19,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:49:19,518 INFO L93 Difference]: Finished difference Result 218 states and 304 transitions. [2019-10-14 23:49:19,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:49:19,519 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2019-10-14 23:49:19,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:49:19,521 INFO L225 Difference]: With dead ends: 218 [2019-10-14 23:49:19,521 INFO L226 Difference]: Without dead ends: 118 [2019-10-14 23:49:19,523 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 23:49:19,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2019-10-14 23:49:19,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 108. [2019-10-14 23:49:19,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2019-10-14 23:49:19,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 149 transitions. [2019-10-14 23:49:19,544 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 149 transitions. Word has length 21 [2019-10-14 23:49:19,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:49:19,544 INFO L462 AbstractCegarLoop]: Abstraction has 108 states and 149 transitions. [2019-10-14 23:49:19,544 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:49:19,545 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 149 transitions. [2019-10-14 23:49:19,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-14 23:49:19,546 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:49:19,546 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 23:49:19,546 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:49:19,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:49:19,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1457781136, now seen corresponding path program 1 times [2019-10-14 23:49:19,547 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:49:19,547 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915960927] [2019-10-14 23:49:19,547 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:19,547 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:19,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:49:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:20,136 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-10-14 23:49:20,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:20,164 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 23:49:20,165 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915960927] [2019-10-14 23:49:20,165 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:49:20,165 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:49:20,165 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823746595] [2019-10-14 23:49:20,166 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:49:20,166 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:49:20,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:49:20,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:49:20,167 INFO L87 Difference]: Start difference. First operand 108 states and 149 transitions. Second operand 6 states. [2019-10-14 23:49:20,338 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2019-10-14 23:49:22,646 WARN L191 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2019-10-14 23:49:22,855 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-10-14 23:49:23,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:49:23,879 INFO L93 Difference]: Finished difference Result 216 states and 307 transitions. [2019-10-14 23:49:23,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:49:23,880 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2019-10-14 23:49:23,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:49:23,884 INFO L225 Difference]: With dead ends: 216 [2019-10-14 23:49:23,884 INFO L226 Difference]: Without dead ends: 208 [2019-10-14 23:49:23,885 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 23:49:23,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2019-10-14 23:49:23,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 198. [2019-10-14 23:49:23,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2019-10-14 23:49:23,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 284 transitions. [2019-10-14 23:49:23,925 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 284 transitions. Word has length 23 [2019-10-14 23:49:23,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:49:23,925 INFO L462 AbstractCegarLoop]: Abstraction has 198 states and 284 transitions. [2019-10-14 23:49:23,925 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:49:23,926 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 284 transitions. [2019-10-14 23:49:23,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-14 23:49:23,931 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:49:23,931 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] [2019-10-14 23:49:23,932 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:49:23,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:49:23,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1078103900, now seen corresponding path program 1 times [2019-10-14 23:49:23,954 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:49:23,955 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853549245] [2019-10-14 23:49:23,955 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:23,955 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:23,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:49:24,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:24,391 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-10-14 23:49:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:24,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:24,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:24,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:24,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:25,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:25,214 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-10-14 23:49:25,215 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853549245] [2019-10-14 23:49:25,215 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380207042] [2019-10-14 23:49:25,216 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 23:49:25,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:25,580 INFO L256 TraceCheckSpWp]: Trace formula consists of 1059 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:49:25,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:49:25,702 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-10-14 23:49:25,702 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:49:25,703 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 4] total 24 [2019-10-14 23:49:25,703 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035056142] [2019-10-14 23:49:25,705 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-10-14 23:49:25,706 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:49:25,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-10-14 23:49:25,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2019-10-14 23:49:25,707 INFO L87 Difference]: Start difference. First operand 198 states and 284 transitions. Second operand 24 states. [2019-10-14 23:49:25,893 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-10-14 23:49:26,240 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-10-14 23:49:43,450 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-10-14 23:49:44,070 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-10-14 23:49:44,599 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-10-14 23:49:44,863 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2019-10-14 23:49:45,298 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-10-14 23:49:45,501 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-10-14 23:49:47,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:49:47,175 INFO L93 Difference]: Finished difference Result 506 states and 766 transitions. [2019-10-14 23:49:47,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-10-14 23:49:47,176 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 117 [2019-10-14 23:49:47,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:49:47,186 INFO L225 Difference]: With dead ends: 506 [2019-10-14 23:49:47,186 INFO L226 Difference]: Without dead ends: 315 [2019-10-14 23:49:47,192 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=345, Invalid=2205, Unknown=0, NotChecked=0, Total=2550 [2019-10-14 23:49:47,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2019-10-14 23:49:47,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 279. [2019-10-14 23:49:47,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2019-10-14 23:49:47,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 407 transitions. [2019-10-14 23:49:47,293 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 407 transitions. Word has length 117 [2019-10-14 23:49:47,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:49:47,294 INFO L462 AbstractCegarLoop]: Abstraction has 279 states and 407 transitions. [2019-10-14 23:49:47,294 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-10-14 23:49:47,296 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 407 transitions. [2019-10-14 23:49:47,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-14 23:49:47,313 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:49:47,313 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] [2019-10-14 23:49:47,514 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:49:47,515 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:49:47,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:49:47,515 INFO L82 PathProgramCache]: Analyzing trace with hash 562323687, now seen corresponding path program 1 times [2019-10-14 23:49:47,516 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:49:47,516 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258732897] [2019-10-14 23:49:47,516 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:47,517 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:49:47,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:49:47,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:47,961 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-10-14 23:49:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:48,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:48,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:48,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:48,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:48,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:48,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:48,830 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2019-10-14 23:49:48,830 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258732897] [2019-10-14 23:49:48,831 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629149063] [2019-10-14 23:49:48,831 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 23:49:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:49:49,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 1076 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 23:49:49,159 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:49:49,252 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-10-14 23:49:49,253 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:49:49,253 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 5] total 27 [2019-10-14 23:49:49,253 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36470796] [2019-10-14 23:49:49,254 INFO L442 AbstractCegarLoop]: Interpolant automaton has 27 states [2019-10-14 23:49:49,255 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:49:49,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2019-10-14 23:49:49,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2019-10-14 23:49:49,256 INFO L87 Difference]: Start difference. First operand 279 states and 407 transitions. Second operand 27 states. [2019-10-14 23:49:49,424 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-10-14 23:49:49,718 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 129