/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -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-fb55353 [2019-11-07 04:48:30,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:48:30,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:48:30,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:48:30,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:48:30,909 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:48:30,911 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:48:30,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:48:30,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:48:30,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:48:30,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:48:30,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:48:30,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:48:30,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:48:30,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:48:30,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:48:30,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:48:30,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:48:30,925 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:48:30,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:48:30,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:48:30,930 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:48:30,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:48:30,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:48:30,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:48:30,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:48:30,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:48:30,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:48:30,937 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:48:30,938 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:48:30,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:48:30,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:48:30,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:48:30,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:48:30,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:48:30,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:48:30,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:48:30,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:48:30,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:48:30,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:48:30,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:48:30,945 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 [2019-11-07 04:48:30,960 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:48:30,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:48:30,961 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:48:30,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:48:30,962 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:48:30,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:48:30,962 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:48:30,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:48:30,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:48:30,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:48:30,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:48:30,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:48:30,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:48:30,963 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:48:30,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:48:30,966 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:48:30,966 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:48:30,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:48:30,966 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:48:30,967 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:48:30,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:48:30,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:48:30,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:48:30,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:48:30,968 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:48:30,968 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:48:30,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:48:30,968 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:48:30,968 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 [2019-11-07 04:48:31,268 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:48:31,281 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:48:31,285 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:48:31,286 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:48:31,287 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:48:31,288 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-pthread/cs_dekker.i [2019-11-07 04:48:31,364 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a02e6dd87/545ec76e97094730881925ba6f847aef/FLAG5a6c914cf [2019-11-07 04:48:31,980 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:48:31,981 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_dekker.i [2019-11-07 04:48:31,997 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a02e6dd87/545ec76e97094730881925ba6f847aef/FLAG5a6c914cf [2019-11-07 04:48:32,187 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a02e6dd87/545ec76e97094730881925ba6f847aef [2019-11-07 04:48:32,197 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:48:32,199 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:48:32,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:48:32,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:48:32,204 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:48:32,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:48:32" (1/1) ... [2019-11-07 04:48:32,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20f0f0d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:48:32, skipping insertion in model container [2019-11-07 04:48:32,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:48:32" (1/1) ... [2019-11-07 04:48:32,217 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:48:32,287 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:48:32,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:48:32,997 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:48:33,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:48:33,198 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:48:33,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:48:33 WrapperNode [2019-11-07 04:48:33,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:48:33,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:48:33,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:48:33,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:48:33,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:48:33" (1/1) ... [2019-11-07 04:48:33,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:48:33" (1/1) ... [2019-11-07 04:48:33,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:48:33" (1/1) ... [2019-11-07 04:48:33,239 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:48:33" (1/1) ... [2019-11-07 04:48:33,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:48:33" (1/1) ... [2019-11-07 04:48:33,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:48:33" (1/1) ... [2019-11-07 04:48:33,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:48:33" (1/1) ... [2019-11-07 04:48:33,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:48:33,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:48:33,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:48:33,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:48:33,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:48:33" (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 [2019-11-07 04:48:33,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:48:33,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:48:33,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2019-11-07 04:48:33,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-07 04:48:33,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-07 04:48:33,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-07 04:48:33,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-07 04:48:33,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-07 04:48:33,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-07 04:48:33,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2019-11-07 04:48:33,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_init [2019-11-07 04:48:33,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_destroy [2019-11-07 04:48:33,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2019-11-07 04:48:33,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2019-11-07 04:48:33,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_init [2019-11-07 04:48:33,414 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_signal [2019-11-07 04:48:33,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_broadcast [2019-11-07 04:48:33,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_wait [2019-11-07 04:48:33,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_assert [2019-11-07 04:48:33,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_assume [2019-11-07 04:48:33,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2019-11-07 04:48:33,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2019-11-07 04:48:33,417 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-11-07 04:48:33,417 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2019-11-07 04:48:33,417 INFO L138 BoogieDeclarations]: Found implementation of procedure main_thread [2019-11-07 04:48:33,418 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:48:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:48:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-07 04:48:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-11-07 04:48:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 04:48:33,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:48:33,419 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-07 04:48:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-07 04:48:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-07 04:48:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-07 04:48:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-07 04:48:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-07 04:48:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-07 04:48:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-07 04:48:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-07 04:48:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-07 04:48:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-07 04:48:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-07 04:48:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-07 04:48:33,423 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-07 04:48:33,423 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-07 04:48:33,423 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-07 04:48:33,423 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-07 04:48:33,423 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-07 04:48:33,424 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-07 04:48:33,424 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-07 04:48:33,424 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-07 04:48:33,424 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-07 04:48:33,425 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-07 04:48:33,425 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-07 04:48:33,425 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-07 04:48:33,425 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-07 04:48:33,425 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-07 04:48:33,426 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-07 04:48:33,426 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-07 04:48:33,426 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-07 04:48:33,427 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-07 04:48:33,427 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-07 04:48:33,427 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-07 04:48:33,427 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-07 04:48:33,427 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-07 04:48:33,428 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-07 04:48:33,428 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-07 04:48:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-07 04:48:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-07 04:48:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-07 04:48:33,430 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-07 04:48:33,430 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-07 04:48:33,431 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-07 04:48:33,431 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-07 04:48:33,431 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-07 04:48:33,432 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-07 04:48:33,432 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-07 04:48:33,432 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-07 04:48:33,432 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-07 04:48:33,432 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-07 04:48:33,433 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-07 04:48:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-07 04:48:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-07 04:48:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-07 04:48:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-07 04:48:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:48:33,435 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-07 04:48:33,436 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-07 04:48:33,436 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:48:33,436 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-07 04:48:33,436 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-07 04:48:33,436 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-07 04:48:33,436 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-07 04:48:33,437 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-07 04:48:33,437 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-07 04:48:33,437 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-07 04:48:33,437 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-07 04:48:33,437 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 04:48:33,437 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-07 04:48:33,438 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-07 04:48:33,438 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-07 04:48:33,438 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-07 04:48:33,438 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-07 04:48:33,438 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-07 04:48:33,438 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-07 04:48:33,439 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-07 04:48:33,439 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-07 04:48:33,439 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-07 04:48:33,439 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-07 04:48:33,439 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-07 04:48:33,440 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-07 04:48:33,440 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-07 04:48:33,440 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-07 04:48:33,440 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-07 04:48:33,440 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-07 04:48:33,440 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-07 04:48:33,441 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-07 04:48:33,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-07 04:48:33,441 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-07 04:48:33,441 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-07 04:48:33,442 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-07 04:48:33,442 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-07 04:48:33,442 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-07 04:48:33,442 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-07 04:48:33,442 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-07 04:48:33,442 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-07 04:48:33,443 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-07 04:48:33,443 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-07 04:48:33,443 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-07 04:48:33,443 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-07 04:48:33,444 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-07 04:48:33,444 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-07 04:48:33,445 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-07 04:48:33,448 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-07 04:48:33,449 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-07 04:48:33,449 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-07 04:48:33,449 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-07 04:48:33,450 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:48:33,450 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2019-11-07 04:48:33,450 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2019-11-07 04:48:33,450 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 04:48:33,451 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2019-11-07 04:48:33,451 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_init [2019-11-07 04:48:33,458 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_destroy [2019-11-07 04:48:33,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:48:33,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:48:33,458 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2019-11-07 04:48:33,459 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2019-11-07 04:48:33,459 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_init [2019-11-07 04:48:33,459 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_signal [2019-11-07 04:48:33,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:48:33,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:48:33,459 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_broadcast [2019-11-07 04:48:33,460 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_wait [2019-11-07 04:48:33,461 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_assert [2019-11-07 04:48:33,461 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_assume [2019-11-07 04:48:33,462 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2019-11-07 04:48:33,462 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2019-11-07 04:48:33,462 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-11-07 04:48:33,462 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2019-11-07 04:48:33,463 INFO L130 BoogieDeclarations]: Found specification of procedure main_thread [2019-11-07 04:48:33,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:48:33,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:48:33,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:48:33,464 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:48:33,464 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2019-11-07 04:48:33,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:48:33,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-07 04:48:33,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:48:34,477 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume !(0 != ~__CS_ret~0 % 256); [2019-11-07 04:48:34,477 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-11-07 04:48:34,620 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume !(0 != ~__CS_ret~0 % 256); [2019-11-07 04:48:34,621 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-11-07 04:48:42,151 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:48:42,151 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-07 04:48:42,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:48:42 BoogieIcfgContainer [2019-11-07 04:48:42,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:48:42,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:48:42,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:48:42,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:48:42,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:48:32" (1/3) ... [2019-11-07 04:48:42,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae868e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:48:42, skipping insertion in model container [2019-11-07 04:48:42,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:48:33" (2/3) ... [2019-11-07 04:48:42,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae868e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:48:42, skipping insertion in model container [2019-11-07 04:48:42,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:48:42" (3/3) ... [2019-11-07 04:48:42,162 INFO L109 eAbstractionObserver]: Analyzing ICFG cs_dekker.i [2019-11-07 04:48:42,172 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:48:42,181 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:48:42,196 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:48:42,226 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:48:42,226 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:48:42,226 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:48:42,227 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:48:42,227 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:48:42,227 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:48:42,227 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:48:42,227 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:48:42,253 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states. [2019-11-07 04:48:42,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-07 04:48:42,260 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:48:42,261 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:48:42,263 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:48:42,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:48:42,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1132146381, now seen corresponding path program 1 times [2019-11-07 04:48:42,282 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:48:42,283 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464013413] [2019-11-07 04:48:42,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:48:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:48:42,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:48:42,783 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464013413] [2019-11-07 04:48:42,784 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:48:42,784 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:48:42,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734104901] [2019-11-07 04:48:42,791 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:48:42,791 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:48:42,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:48:42,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:48:42,809 INFO L87 Difference]: Start difference. First operand 149 states. Second operand 3 states. [2019-11-07 04:48:44,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:48:44,939 INFO L93 Difference]: Finished difference Result 129 states and 168 transitions. [2019-11-07 04:48:44,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:48:44,944 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-11-07 04:48:44,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:48:44,955 INFO L225 Difference]: With dead ends: 129 [2019-11-07 04:48:44,955 INFO L226 Difference]: Without dead ends: 63 [2019-11-07 04:48:44,959 INFO L630 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 [2019-11-07 04:48:44,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-07 04:48:45,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2019-11-07 04:48:45,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-11-07 04:48:45,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2019-11-07 04:48:45,005 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 16 [2019-11-07 04:48:45,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:48:45,006 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2019-11-07 04:48:45,006 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:48:45,006 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2019-11-07 04:48:45,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-07 04:48:45,009 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:48:45,009 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:48:45,009 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:48:45,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:48:45,009 INFO L82 PathProgramCache]: Analyzing trace with hash 319616942, now seen corresponding path program 1 times [2019-11-07 04:48:45,010 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:48:45,010 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467369543] [2019-11-07 04:48:45,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:48:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:48:45,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:48:45,120 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467369543] [2019-11-07 04:48:45,120 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:48:45,120 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:48:45,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734866170] [2019-11-07 04:48:45,122 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:48:45,123 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:48:45,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:48:45,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:48:45,123 INFO L87 Difference]: Start difference. First operand 62 states and 80 transitions. Second operand 3 states. [2019-11-07 04:48:45,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:48:45,151 INFO L93 Difference]: Finished difference Result 119 states and 156 transitions. [2019-11-07 04:48:45,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:48:45,152 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-11-07 04:48:45,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:48:45,153 INFO L225 Difference]: With dead ends: 119 [2019-11-07 04:48:45,153 INFO L226 Difference]: Without dead ends: 63 [2019-11-07 04:48:45,155 INFO L630 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 [2019-11-07 04:48:45,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-07 04:48:45,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2019-11-07 04:48:45,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-11-07 04:48:45,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 81 transitions. [2019-11-07 04:48:45,166 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 81 transitions. Word has length 18 [2019-11-07 04:48:45,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:48:45,167 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 81 transitions. [2019-11-07 04:48:45,167 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:48:45,167 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 81 transitions. [2019-11-07 04:48:45,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-07 04:48:45,168 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:48:45,168 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:48:45,168 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:48:45,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:48:45,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1761170925, now seen corresponding path program 1 times [2019-11-07 04:48:45,169 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:48:45,169 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545399921] [2019-11-07 04:48:45,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:48:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:48:45,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:48:45,436 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545399921] [2019-11-07 04:48:45,436 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:48:45,436 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:48:45,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557617401] [2019-11-07 04:48:45,438 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:48:45,438 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:48:45,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:48:45,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:48:45,439 INFO L87 Difference]: Start difference. First operand 63 states and 81 transitions. Second operand 5 states. [2019-11-07 04:48:45,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:48:45,530 INFO L93 Difference]: Finished difference Result 107 states and 140 transitions. [2019-11-07 04:48:45,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:48:45,533 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-11-07 04:48:45,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:48:45,540 INFO L225 Difference]: With dead ends: 107 [2019-11-07 04:48:45,541 INFO L226 Difference]: Without dead ends: 100 [2019-11-07 04:48:45,541 INFO L630 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 [2019-11-07 04:48:45,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2019-11-07 04:48:45,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2019-11-07 04:48:45,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2019-11-07 04:48:45,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 129 transitions. [2019-11-07 04:48:45,560 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 129 transitions. Word has length 19 [2019-11-07 04:48:45,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:48:45,561 INFO L462 AbstractCegarLoop]: Abstraction has 98 states and 129 transitions. [2019-11-07 04:48:45,561 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:48:45,561 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 129 transitions. [2019-11-07 04:48:45,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-11-07 04:48:45,564 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:48:45,564 INFO L410 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] [2019-11-07 04:48:45,564 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:48:45,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:48:45,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1656995956, now seen corresponding path program 1 times [2019-11-07 04:48:45,565 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:48:45,565 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598291883] [2019-11-07 04:48:45,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:48:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:48:46,800 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-07 04:48:46,801 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598291883] [2019-11-07 04:48:46,801 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907694076] [2019-11-07 04:48:46,802 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 [2019-11-07 04:48:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:48:47,180 INFO L256 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 04:48:47,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:48:47,234 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-07 04:48:47,235 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:48:47,372 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-07 04:48:47,372 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [909999182] [2019-11-07 04:48:47,409 INFO L159 IcfgInterpreter]: Started Sifa with 53 locations of interest [2019-11-07 04:48:47,409 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:48:47,415 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:48:47,429 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:48:47,430 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:48:47,752 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 306 [2019-11-07 04:48:48,609 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2019-11-07 04:48:49,080 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 348 for LOIs [2019-11-07 04:48:49,310 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 497 [2019-11-07 04:48:49,670 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 491 [2019-11-07 04:48:49,827 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 488 [2019-11-07 04:48:49,987 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 485 [2019-11-07 04:48:51,824 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 635 [2019-11-07 04:48:52,192 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 632 [2019-11-07 04:48:52,735 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 633 [2019-11-07 04:48:53,050 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 630 [2019-11-07 04:48:53,459 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 627 [2019-11-07 04:48:59,409 WARN L191 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2019-11-07 04:48:59,896 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 595 [2019-11-07 04:49:00,045 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 592 [2019-11-07 04:49:01,028 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 569 [2019-11-07 04:49:01,558 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-07 04:49:02,508 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:02,873 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:02,933 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:03,014 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:03,123 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:03,397 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:03,449 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:03,574 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:03,634 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:03,696 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:03,980 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:04,434 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:04,496 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:04,863 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:05,549 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:05,811 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:05,926 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:06,039 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:06,133 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:06,321 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:06,476 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:06,693 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:06,740 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:06,965 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:07,032 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:07,100 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:07,167 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:07,216 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:07,427 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:07,503 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:07,632 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:07,688 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:07,741 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:08,019 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:08,077 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:08,137 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:08,192 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:08,254 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:08,320 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:08,385 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:08,761 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:08,825 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:09,051 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:09,117 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:09,181 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:09,462 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:09,536 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:09,609 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:09,805 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:09,860 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:09,939 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:09,992 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:10,048 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:10,108 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:10,163 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:10,382 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:10,483 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:10,582 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:10,697 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:10,788 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:10,861 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:10,937 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:10,988 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:11,115 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:11,231 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:11,290 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:11,353 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:11,414 WARN L225 Elim1Store]: Array PQE input equivalent to false