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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/seq-pthread/cs_dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:30:15,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:30:15,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:30:15,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:30:15,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:30:15,854 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:30:15,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:30:15,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:30:15,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:30:15,875 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:30:15,877 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:30:15,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:30:15,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:30:15,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:30:15,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:30:15,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:30:15,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:30:15,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:30:15,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:30:15,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:30:15,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:30:15,902 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:30:15,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:30:15,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:30:15,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:30:15,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:30:15,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:30:15,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:30:15,912 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:30:15,913 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:30:15,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:30:15,915 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:30:15,916 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:30:15,916 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:30:15,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:30:15,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:30:15,919 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:30:15,919 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:30:15,919 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:30:15,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:30:15,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:30:15,922 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 [2019-10-15 03:30:15,955 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:30:15,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:30:15,959 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:30:15,959 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:30:15,960 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:30:15,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:30:15,963 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:30:15,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:30:15,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:30:15,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:30:15,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:30:15,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:30:15,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:30:15,965 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:30:15,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:30:15,965 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:30:15,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:30:15,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:30:15,966 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:30:15,966 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:30:15,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:30:15,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:30:15,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:30:15,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:30:15,968 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:30:15,968 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:30:15,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:30:15,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:30:15,969 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:30:16,274 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:30:16,295 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:30:16,301 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:30:16,302 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:30:16,303 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:30:16,303 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-pthread/cs_dekker.i [2019-10-15 03:30:16,383 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5d6a174d/0b017c2c446742048a53d89ce2ef8ad9/FLAGc14ed8a24 [2019-10-15 03:30:17,001 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:30:17,002 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_dekker.i [2019-10-15 03:30:17,019 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5d6a174d/0b017c2c446742048a53d89ce2ef8ad9/FLAGc14ed8a24 [2019-10-15 03:30:17,232 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5d6a174d/0b017c2c446742048a53d89ce2ef8ad9 [2019-10-15 03:30:17,243 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:30:17,244 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:30:17,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:30:17,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:30:17,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:30:17,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:30:17" (1/1) ... [2019-10-15 03:30:17,253 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f69be82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:17, skipping insertion in model container [2019-10-15 03:30:17,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:30:17" (1/1) ... [2019-10-15 03:30:17,261 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:30:17,329 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:30:17,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:30:17,962 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:30:18,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:30:18,185 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:30:18,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:18 WrapperNode [2019-10-15 03:30:18,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:30:18,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:30:18,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:30:18,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:30:18,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:18" (1/1) ... [2019-10-15 03:30:18,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:18" (1/1) ... [2019-10-15 03:30:18,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:18" (1/1) ... [2019-10-15 03:30:18,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:18" (1/1) ... [2019-10-15 03:30:18,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:18" (1/1) ... [2019-10-15 03:30:18,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:18" (1/1) ... [2019-10-15 03:30:18,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:18" (1/1) ... [2019-10-15 03:30:18,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:30:18,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:30:18,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:30:18,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:30:18,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:18" (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 [2019-10-15 03:30:18,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:30:18,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:30:18,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2019-10-15 03:30:18,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-15 03:30:18,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-15 03:30:18,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-10-15 03:30:18,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-10-15 03:30:18,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-10-15 03:30:18,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 03:30:18,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2019-10-15 03:30:18,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_init [2019-10-15 03:30:18,483 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_destroy [2019-10-15 03:30:18,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2019-10-15 03:30:18,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2019-10-15 03:30:18,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_init [2019-10-15 03:30:18,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_signal [2019-10-15 03:30:18,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_broadcast [2019-10-15 03:30:18,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_wait [2019-10-15 03:30:18,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_assert [2019-10-15 03:30:18,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_assume [2019-10-15 03:30:18,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2019-10-15 03:30:18,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2019-10-15 03:30:18,489 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-10-15 03:30:18,489 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2019-10-15 03:30:18,489 INFO L138 BoogieDeclarations]: Found implementation of procedure main_thread [2019-10-15 03:30:18,490 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:30:18,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:30:18,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-15 03:30:18,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-10-15 03:30:18,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 03:30:18,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:30:18,491 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-15 03:30:18,491 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-15 03:30:18,491 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-15 03:30:18,492 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-15 03:30:18,492 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-15 03:30:18,492 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-15 03:30:18,492 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-15 03:30:18,492 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-15 03:30:18,493 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-15 03:30:18,493 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-15 03:30:18,493 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-15 03:30:18,493 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-15 03:30:18,493 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-15 03:30:18,495 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-15 03:30:18,495 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-15 03:30:18,495 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-15 03:30:18,495 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-15 03:30:18,496 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-15 03:30:18,496 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-10-15 03:30:18,496 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-10-15 03:30:18,496 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-10-15 03:30:18,496 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-15 03:30:18,497 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-15 03:30:18,497 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-15 03:30:18,497 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-15 03:30:18,497 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-15 03:30:18,497 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-15 03:30:18,497 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-15 03:30:18,499 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-15 03:30:18,499 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-15 03:30:18,499 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-15 03:30:18,499 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-15 03:30:18,499 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-15 03:30:18,500 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-15 03:30:18,500 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-15 03:30:18,500 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-15 03:30:18,500 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-15 03:30:18,501 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-15 03:30:18,501 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-15 03:30:18,502 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-15 03:30:18,502 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-15 03:30:18,502 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-15 03:30:18,503 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-15 03:30:18,503 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-15 03:30:18,503 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-15 03:30:18,504 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-15 03:30:18,504 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-15 03:30:18,504 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-15 03:30:18,504 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-15 03:30:18,505 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-15 03:30:18,506 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-15 03:30:18,506 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-15 03:30:18,506 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-15 03:30:18,506 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-15 03:30:18,507 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-15 03:30:18,507 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:30:18,508 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 03:30:18,508 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-15 03:30:18,508 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:30:18,509 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-15 03:30:18,509 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-15 03:30:18,509 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-15 03:30:18,509 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-15 03:30:18,509 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-15 03:30:18,510 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-15 03:30:18,510 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-15 03:30:18,510 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-15 03:30:18,510 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:30:18,510 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-15 03:30:18,511 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-15 03:30:18,511 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-15 03:30:18,511 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-15 03:30:18,511 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-15 03:30:18,511 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-15 03:30:18,511 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-15 03:30:18,512 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-15 03:30:18,512 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-15 03:30:18,512 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-15 03:30:18,512 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-15 03:30:18,512 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-15 03:30:18,512 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-15 03:30:18,513 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-15 03:30:18,513 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-15 03:30:18,513 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-15 03:30:18,513 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-15 03:30:18,513 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-15 03:30:18,514 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-15 03:30:18,514 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-15 03:30:18,514 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-15 03:30:18,515 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-15 03:30:18,515 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-15 03:30:18,515 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-15 03:30:18,516 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-15 03:30:18,516 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-15 03:30:18,516 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-15 03:30:18,516 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-15 03:30:18,516 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-15 03:30:18,516 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-15 03:30:18,517 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-15 03:30:18,517 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-15 03:30:18,517 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-15 03:30:18,518 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-15 03:30:18,519 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-15 03:30:18,523 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-15 03:30:18,523 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-15 03:30:18,523 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-15 03:30:18,523 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-15 03:30:18,524 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:30:18,524 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2019-10-15 03:30:18,524 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2019-10-15 03:30:18,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 03:30:18,525 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2019-10-15 03:30:18,526 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_init [2019-10-15 03:30:18,532 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_destroy [2019-10-15 03:30:18,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:30:18,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:30:18,533 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2019-10-15 03:30:18,533 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2019-10-15 03:30:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_init [2019-10-15 03:30:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_signal [2019-10-15 03:30:18,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:30:18,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:30:18,538 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_broadcast [2019-10-15 03:30:18,538 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_wait [2019-10-15 03:30:18,539 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_assert [2019-10-15 03:30:18,539 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_assume [2019-10-15 03:30:18,539 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2019-10-15 03:30:18,539 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2019-10-15 03:30:18,539 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-10-15 03:30:18,540 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2019-10-15 03:30:18,540 INFO L130 BoogieDeclarations]: Found specification of procedure main_thread [2019-10-15 03:30:18,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:30:18,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:30:18,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:30:18,540 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:30:18,541 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2019-10-15 03:30:18,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:30:18,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 03:30:18,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:30:19,389 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume !(0 != ~__CS_ret~0 % 256); [2019-10-15 03:30:19,390 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-10-15 03:30:19,535 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume !(0 != ~__CS_ret~0 % 256); [2019-10-15 03:30:19,536 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-10-15 03:30:26,963 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:30:26,964 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-10-15 03:30:26,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:30:26 BoogieIcfgContainer [2019-10-15 03:30:26,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:30:26,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:30:26,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:30:26,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:30:26,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:30:17" (1/3) ... [2019-10-15 03:30:26,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40fa422e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:30:26, skipping insertion in model container [2019-10-15 03:30:26,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:18" (2/3) ... [2019-10-15 03:30:26,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40fa422e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:30:26, skipping insertion in model container [2019-10-15 03:30:26,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:30:26" (3/3) ... [2019-10-15 03:30:26,977 INFO L109 eAbstractionObserver]: Analyzing ICFG cs_dekker.i [2019-10-15 03:30:26,989 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:30:27,001 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:30:27,015 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:30:27,052 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:30:27,053 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:30:27,053 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:30:27,053 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:30:27,053 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:30:27,053 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:30:27,054 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:30:27,054 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:30:27,082 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states. [2019-10-15 03:30:27,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-15 03:30:27,090 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:30:27,090 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:30:27,092 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:30:27,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:30:27,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1132146381, now seen corresponding path program 1 times [2019-10-15 03:30:27,109 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:30:27,109 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732203750] [2019-10-15 03:30:27,109 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:27,109 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:27,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:30:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:30:27,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:30:27,569 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732203750] [2019-10-15 03:30:27,570 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:30:27,570 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:30:27,571 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456446155] [2019-10-15 03:30:27,575 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:30:27,575 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:30:27,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:30:27,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:30:27,592 INFO L87 Difference]: Start difference. First operand 149 states. Second operand 3 states. [2019-10-15 03:30:29,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:30:29,716 INFO L93 Difference]: Finished difference Result 129 states and 168 transitions. [2019-10-15 03:30:29,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:30:29,718 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-10-15 03:30:29,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:30:29,734 INFO L225 Difference]: With dead ends: 129 [2019-10-15 03:30:29,734 INFO L226 Difference]: Without dead ends: 63 [2019-10-15 03:30:29,740 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:30:29,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-10-15 03:30:29,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2019-10-15 03:30:29,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-10-15 03:30:29,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2019-10-15 03:30:29,789 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 16 [2019-10-15 03:30:29,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:30:29,789 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2019-10-15 03:30:29,789 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:30:29,790 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2019-10-15 03:30:29,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-15 03:30:29,792 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:30:29,792 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:30:29,792 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:30:29,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:30:29,793 INFO L82 PathProgramCache]: Analyzing trace with hash 319616942, now seen corresponding path program 1 times [2019-10-15 03:30:29,793 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:30:29,793 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358968143] [2019-10-15 03:30:29,793 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:29,793 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:29,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:30:29,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:30:29,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:30:29,894 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358968143] [2019-10-15 03:30:29,894 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:30:29,895 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:30:29,895 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244378711] [2019-10-15 03:30:29,898 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:30:29,899 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:30:29,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:30:29,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:30:29,899 INFO L87 Difference]: Start difference. First operand 62 states and 80 transitions. Second operand 3 states. [2019-10-15 03:30:29,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:30:29,923 INFO L93 Difference]: Finished difference Result 119 states and 156 transitions. [2019-10-15 03:30:29,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:30:29,924 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-10-15 03:30:29,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:30:29,926 INFO L225 Difference]: With dead ends: 119 [2019-10-15 03:30:29,926 INFO L226 Difference]: Without dead ends: 63 [2019-10-15 03:30:29,927 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:30:29,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-10-15 03:30:29,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2019-10-15 03:30:29,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-10-15 03:30:29,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 81 transitions. [2019-10-15 03:30:29,946 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 81 transitions. Word has length 18 [2019-10-15 03:30:29,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:30:29,946 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 81 transitions. [2019-10-15 03:30:29,946 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:30:29,946 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 81 transitions. [2019-10-15 03:30:29,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-15 03:30:29,950 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:30:29,950 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:30:29,951 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:30:29,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:30:29,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1761170925, now seen corresponding path program 1 times [2019-10-15 03:30:29,951 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:30:29,951 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396838020] [2019-10-15 03:30:29,952 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:29,952 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:29,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:30:30,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:30:30,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:30:30,203 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396838020] [2019-10-15 03:30:30,203 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:30:30,203 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:30:30,204 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948025491] [2019-10-15 03:30:30,204 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:30:30,204 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:30:30,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:30:30,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:30:30,205 INFO L87 Difference]: Start difference. First operand 63 states and 81 transitions. Second operand 5 states. [2019-10-15 03:30:30,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:30:30,256 INFO L93 Difference]: Finished difference Result 107 states and 140 transitions. [2019-10-15 03:30:30,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:30:30,257 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-10-15 03:30:30,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:30:30,261 INFO L225 Difference]: With dead ends: 107 [2019-10-15 03:30:30,261 INFO L226 Difference]: Without dead ends: 100 [2019-10-15 03:30:30,262 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:30:30,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2019-10-15 03:30:30,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2019-10-15 03:30:30,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2019-10-15 03:30:30,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 129 transitions. [2019-10-15 03:30:30,280 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 129 transitions. Word has length 19 [2019-10-15 03:30:30,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:30:30,281 INFO L462 AbstractCegarLoop]: Abstraction has 98 states and 129 transitions. [2019-10-15 03:30:30,281 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:30:30,281 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 129 transitions. [2019-10-15 03:30:30,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-10-15 03:30:30,284 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:30:30,284 INFO L380 BasicCegarLoop]: trace histogram [5, 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] [2019-10-15 03:30:30,284 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:30:30,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:30:30,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1656995956, now seen corresponding path program 1 times [2019-10-15 03:30:30,285 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:30:30,285 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862322613] [2019-10-15 03:30:30,285 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:30,285 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:30,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:30:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:30:31,509 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-15 03:30:31,509 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862322613] [2019-10-15 03:30:31,509 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838405952] [2019-10-15 03:30:31,510 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 [2019-10-15 03:30:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:30:31,856 INFO L256 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:30:31,870 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:30:31,910 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-15 03:30:31,911 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:30:32,017 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-15 03:30:32,018 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1417884326] [2019-10-15 03:30:32,049 INFO L162 IcfgInterpreter]: Started Sifa with 53 locations of interest [2019-10-15 03:30:32,050 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:30:32,057 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:30:32,065 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:30:32,066 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:30:32,438 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 306 [2019-10-15 03:30:33,297 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2019-10-15 03:30:33,616 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2019-10-15 03:30:34,154 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 332 [2019-10-15 03:30:34,270 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2019-10-15 03:30:34,662 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 348 for LOIs [2019-10-15 03:30:34,938 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 362 [2019-10-15 03:30:35,269 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 438 [2019-10-15 03:30:35,507 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 497 [2019-10-15 03:30:35,790 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 494 [2019-10-15 03:30:35,996 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 491 [2019-10-15 03:30:36,182 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 488 [2019-10-15 03:30:36,864 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 520 [2019-10-15 03:30:38,462 WARN L191 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 635 [2019-10-15 03:30:38,896 WARN L191 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 632 [2019-10-15 03:30:39,313 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 633 [2019-10-15 03:30:39,613 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 630 [2019-10-15 03:30:39,862 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 627 [2019-10-15 03:30:41,937 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 416 [2019-10-15 03:30:42,433 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 577 [2019-10-15 03:30:43,999 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2019-10-15 03:30:44,807 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 585 [2019-10-15 03:30:45,087 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 582 [2019-10-15 03:30:45,339 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 579 [2019-10-15 03:30:45,979 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 569 [2019-10-15 03:30:46,782 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-10-15 03:30:47,853 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:48,073 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:48,153 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:48,233 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:48,292 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:48,525 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:48,584 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:48,736 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:48,793 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:48,850 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:49,022 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:49,445 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:49,500 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:49,566 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:50,124 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:50,313 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:50,372 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:50,450 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:50,514 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:50,650 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:50,784 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:50,984 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:51,247 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:51,327 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:51,406 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:51,507 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:51,559 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:51,609 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:51,659 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:51,810 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:51,917 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:51,973 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:52,023 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:52,291 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:52,343 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:52,399 WARN L225 Elim1Store]: Array PQE input equivalent to false