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_peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:30:18,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:30:18,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:30:18,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:30:18,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:30:18,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:30:18,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:30:18,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:30:18,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:30:18,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:30:18,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:30:18,266 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:30:18,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:30:18,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:30:18,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:30:18,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:30:18,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:30:18,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:30:18,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:30:18,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:30:18,285 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:30:18,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:30:18,291 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:30:18,292 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:30:18,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:30:18,294 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:30:18,294 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:30:18,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:30:18,297 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:30:18,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:30:18,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:30:18,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:30:18,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:30:18,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:30:18,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:30:18,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:30:18,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:30:18,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:30:18,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:30:18,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:30:18,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:30:18,307 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 03:30:18,340 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:30:18,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:30:18,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:30:18,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:30:18,345 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:30:18,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:30:18,346 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:30:18,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:30:18,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:30:18,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:30:18,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:30:18,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:30:18,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:30:18,350 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:30:18,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:30:18,351 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:30:18,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:30:18,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:30:18,352 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:30:18,352 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:30:18,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:30:18,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:30:18,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:30:18,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:30:18,353 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:30:18,354 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:30:18,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:30:18,354 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:30:18,354 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 03:30:18,666 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:30:18,681 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:30:18,684 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:30:18,686 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:30:18,686 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:30:18,687 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-pthread/cs_peterson.i [2019-10-15 03:30:18,765 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a0a74312/7fc4e27e9ea9404abecac4f2f03b3af2/FLAGc41b49230 [2019-10-15 03:30:19,367 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:30:19,368 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_peterson.i [2019-10-15 03:30:19,392 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a0a74312/7fc4e27e9ea9404abecac4f2f03b3af2/FLAGc41b49230 [2019-10-15 03:30:19,618 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a0a74312/7fc4e27e9ea9404abecac4f2f03b3af2 [2019-10-15 03:30:19,629 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:30:19,630 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:30:19,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:30:19,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:30:19,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:30:19,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:30:19" (1/1) ... [2019-10-15 03:30:19,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d281660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:19, skipping insertion in model container [2019-10-15 03:30:19,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:30:19" (1/1) ... [2019-10-15 03:30:19,647 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:30:19,711 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:30:20,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:30:20,301 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:30:20,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:30:20,548 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:30:20,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:20 WrapperNode [2019-10-15 03:30:20,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:30:20,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:30:20,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:30:20,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:30:20,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:20" (1/1) ... [2019-10-15 03:30:20,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:20" (1/1) ... [2019-10-15 03:30:20,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:20" (1/1) ... [2019-10-15 03:30:20,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:20" (1/1) ... [2019-10-15 03:30:20,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:20" (1/1) ... [2019-10-15 03:30:20,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:20" (1/1) ... [2019-10-15 03:30:20,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:20" (1/1) ... [2019-10-15 03:30:20,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:30:20,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:30:20,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:30:20,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:30:20,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:20" (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 03:30:20,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:30:20,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:30:20,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2019-10-15 03:30:20,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-15 03:30:20,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-15 03:30:20,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-10-15 03:30:20,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-10-15 03:30:20,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-10-15 03:30:20,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 03:30:20,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2019-10-15 03:30:20,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_init [2019-10-15 03:30:20,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_destroy [2019-10-15 03:30:20,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2019-10-15 03:30:20,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2019-10-15 03:30:20,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_init [2019-10-15 03:30:20,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_signal [2019-10-15 03:30:20,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_broadcast [2019-10-15 03:30:20,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_wait [2019-10-15 03:30:20,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_assert [2019-10-15 03:30:20,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_assume [2019-10-15 03:30:20,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2019-10-15 03:30:20,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2019-10-15 03:30:20,813 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-10-15 03:30:20,813 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2019-10-15 03:30:20,813 INFO L138 BoogieDeclarations]: Found implementation of procedure main_thread [2019-10-15 03:30:20,813 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:30:20,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:30:20,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-15 03:30:20,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-10-15 03:30:20,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 03:30:20,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:30:20,815 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-15 03:30:20,815 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-15 03:30:20,815 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-15 03:30:20,815 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-15 03:30:20,815 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-15 03:30:20,815 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-15 03:30:20,816 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-15 03:30:20,816 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-15 03:30:20,816 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-15 03:30:20,816 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-15 03:30:20,816 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-15 03:30:20,816 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-15 03:30:20,817 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-15 03:30:20,818 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-15 03:30:20,818 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-15 03:30:20,818 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-15 03:30:20,818 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-15 03:30:20,818 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-15 03:30:20,819 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-10-15 03:30:20,819 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-10-15 03:30:20,819 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-10-15 03:30:20,819 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-15 03:30:20,819 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-15 03:30:20,820 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-15 03:30:20,820 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-15 03:30:20,820 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-15 03:30:20,820 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-15 03:30:20,820 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-15 03:30:20,821 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-15 03:30:20,821 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-15 03:30:20,822 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-15 03:30:20,822 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-15 03:30:20,822 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-15 03:30:20,822 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-15 03:30:20,822 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-15 03:30:20,822 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-15 03:30:20,823 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-15 03:30:20,824 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-15 03:30:20,824 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-15 03:30:20,824 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-15 03:30:20,824 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-15 03:30:20,824 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-15 03:30:20,825 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-15 03:30:20,825 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-15 03:30:20,826 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-15 03:30:20,826 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-15 03:30:20,826 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-15 03:30:20,827 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-15 03:30:20,827 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-15 03:30:20,827 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-15 03:30:20,828 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-15 03:30:20,828 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-15 03:30:20,829 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-15 03:30:20,829 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-15 03:30:20,830 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-15 03:30:20,830 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:30:20,831 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 03:30:20,831 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-15 03:30:20,833 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:30:20,833 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-15 03:30:20,833 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-15 03:30:20,833 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-15 03:30:20,833 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-15 03:30:20,833 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-15 03:30:20,834 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-15 03:30:20,834 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-15 03:30:20,834 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-15 03:30:20,834 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:30:20,834 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-15 03:30:20,835 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-15 03:30:20,835 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-15 03:30:20,835 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-15 03:30:20,835 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-15 03:30:20,835 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-15 03:30:20,835 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-15 03:30:20,836 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-15 03:30:20,836 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-15 03:30:20,836 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-15 03:30:20,836 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-15 03:30:20,836 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-15 03:30:20,836 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-15 03:30:20,837 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-15 03:30:20,838 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-15 03:30:20,838 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-15 03:30:20,838 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-15 03:30:20,838 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-15 03:30:20,838 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-15 03:30:20,838 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-15 03:30:20,839 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-15 03:30:20,839 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-15 03:30:20,839 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-15 03:30:20,839 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-15 03:30:20,839 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-15 03:30:20,839 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-15 03:30:20,840 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-15 03:30:20,840 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-15 03:30:20,840 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-15 03:30:20,840 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-15 03:30:20,840 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-15 03:30:20,841 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-15 03:30:20,841 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-15 03:30:20,841 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-15 03:30:20,841 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-15 03:30:20,841 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-15 03:30:20,842 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-15 03:30:20,842 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-15 03:30:20,842 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-15 03:30:20,842 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:30:20,842 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2019-10-15 03:30:20,843 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2019-10-15 03:30:20,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 03:30:20,843 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2019-10-15 03:30:20,843 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_init [2019-10-15 03:30:20,843 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_destroy [2019-10-15 03:30:20,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:30:20,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:30:20,844 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2019-10-15 03:30:20,844 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2019-10-15 03:30:20,844 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_init [2019-10-15 03:30:20,844 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_signal [2019-10-15 03:30:20,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:30:20,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:30:20,845 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_broadcast [2019-10-15 03:30:20,845 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_wait [2019-10-15 03:30:20,845 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_assert [2019-10-15 03:30:20,846 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_assume [2019-10-15 03:30:20,846 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2019-10-15 03:30:20,846 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2019-10-15 03:30:20,846 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-10-15 03:30:20,846 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2019-10-15 03:30:20,846 INFO L130 BoogieDeclarations]: Found specification of procedure main_thread [2019-10-15 03:30:20,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:30:20,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:30:20,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:30:20,847 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:30:20,847 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2019-10-15 03:30:20,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:30:20,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 03:30:20,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:30:21,645 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##29: assume !(0 != ~__CS_ret~0 % 256); [2019-10-15 03:30:21,645 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-10-15 03:30:21,731 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##29: assume !(0 != ~__CS_ret~0 % 256); [2019-10-15 03:30:21,732 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-10-15 03:30:29,201 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:30:29,202 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-15 03:30:29,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:30:29 BoogieIcfgContainer [2019-10-15 03:30:29,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:30:29,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:30:29,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:30:29,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:30:29,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:30:19" (1/3) ... [2019-10-15 03:30:29,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f47cfe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:30:29, skipping insertion in model container [2019-10-15 03:30:29,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:20" (2/3) ... [2019-10-15 03:30:29,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f47cfe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:30:29, skipping insertion in model container [2019-10-15 03:30:29,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:30:29" (3/3) ... [2019-10-15 03:30:29,217 INFO L109 eAbstractionObserver]: Analyzing ICFG cs_peterson.i [2019-10-15 03:30:29,231 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:30:29,244 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:30:29,256 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:30:29,295 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:30:29,296 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:30:29,296 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:30:29,296 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:30:29,296 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:30:29,296 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:30:29,296 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:30:29,297 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:30:29,327 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states. [2019-10-15 03:30:29,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-15 03:30:29,335 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:30:29,336 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:30:29,340 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:30:29,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:30:29,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1380098816, now seen corresponding path program 1 times [2019-10-15 03:30:29,358 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:30:29,358 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520558347] [2019-10-15 03:30:29,358 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:29,359 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:29,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:30:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:30:29,882 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 03:30:29,883 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520558347] [2019-10-15 03:30:29,884 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:30:29,885 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:30:29,885 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322420908] [2019-10-15 03:30:29,890 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:30:29,891 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:30:29,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:30:29,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:30:29,909 INFO L87 Difference]: Start difference. First operand 113 states. Second operand 3 states. [2019-10-15 03:30:32,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:30:32,035 INFO L93 Difference]: Finished difference Result 117 states and 152 transitions. [2019-10-15 03:30:32,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:30:32,040 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-10-15 03:30:32,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:30:32,056 INFO L225 Difference]: With dead ends: 117 [2019-10-15 03:30:32,056 INFO L226 Difference]: Without dead ends: 57 [2019-10-15 03:30:32,068 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 03:30:32,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-10-15 03:30:32,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2019-10-15 03:30:32,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-10-15 03:30:32,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2019-10-15 03:30:32,127 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 16 [2019-10-15 03:30:32,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:30:32,127 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2019-10-15 03:30:32,128 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:30:32,128 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2019-10-15 03:30:32,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-15 03:30:32,130 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:30:32,130 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 03:30:32,130 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:30:32,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:30:32,131 INFO L82 PathProgramCache]: Analyzing trace with hash 2086385279, now seen corresponding path program 1 times [2019-10-15 03:30:32,131 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:30:32,131 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818598310] [2019-10-15 03:30:32,132 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:32,132 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:32,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:30:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:30:32,245 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 03:30:32,251 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818598310] [2019-10-15 03:30:32,251 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:30:32,251 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:30:32,251 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272522204] [2019-10-15 03:30:32,253 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:30:32,253 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:30:32,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:30:32,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:30:32,254 INFO L87 Difference]: Start difference. First operand 56 states and 72 transitions. Second operand 3 states. [2019-10-15 03:30:32,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:30:32,284 INFO L93 Difference]: Finished difference Result 107 states and 140 transitions. [2019-10-15 03:30:32,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:30:32,285 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-10-15 03:30:32,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:30:32,286 INFO L225 Difference]: With dead ends: 107 [2019-10-15 03:30:32,287 INFO L226 Difference]: Without dead ends: 57 [2019-10-15 03:30:32,289 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 03:30:32,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-10-15 03:30:32,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2019-10-15 03:30:32,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-10-15 03:30:32,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 73 transitions. [2019-10-15 03:30:32,310 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 73 transitions. Word has length 18 [2019-10-15 03:30:32,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:30:32,311 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 73 transitions. [2019-10-15 03:30:32,311 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:30:32,311 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 73 transitions. [2019-10-15 03:30:32,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-15 03:30:32,315 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:30:32,315 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 03:30:32,316 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:30:32,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:30:32,316 INFO L82 PathProgramCache]: Analyzing trace with hash 717371159, now seen corresponding path program 1 times [2019-10-15 03:30:32,316 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:30:32,317 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436596164] [2019-10-15 03:30:32,317 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:32,317 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:32,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:30:32,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:30:32,596 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 03:30:32,597 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436596164] [2019-10-15 03:30:32,597 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:30:32,598 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:30:32,598 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953382947] [2019-10-15 03:30:32,598 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:30:32,599 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:30:32,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:30:32,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:30:32,601 INFO L87 Difference]: Start difference. First operand 57 states and 73 transitions. Second operand 5 states. [2019-10-15 03:30:32,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:30:32,659 INFO L93 Difference]: Finished difference Result 95 states and 124 transitions. [2019-10-15 03:30:32,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:30:32,659 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-10-15 03:30:32,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:30:32,664 INFO L225 Difference]: With dead ends: 95 [2019-10-15 03:30:32,665 INFO L226 Difference]: Without dead ends: 88 [2019-10-15 03:30:32,672 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 03:30:32,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2019-10-15 03:30:32,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2019-10-15 03:30:32,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2019-10-15 03:30:32,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 113 transitions. [2019-10-15 03:30:32,698 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 113 transitions. Word has length 19 [2019-10-15 03:30:32,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:30:32,698 INFO L462 AbstractCegarLoop]: Abstraction has 86 states and 113 transitions. [2019-10-15 03:30:32,698 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:30:32,699 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 113 transitions. [2019-10-15 03:30:32,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-15 03:30:32,701 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:30:32,701 INFO L380 BasicCegarLoop]: trace histogram [4, 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] [2019-10-15 03:30:32,701 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:30:32,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:30:32,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1777277339, now seen corresponding path program 1 times [2019-10-15 03:30:32,702 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:30:32,702 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17424392] [2019-10-15 03:30:32,702 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:32,703 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:32,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:30:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:30:34,097 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:30:34,098 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17424392] [2019-10-15 03:30:34,098 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090659510] [2019-10-15 03:30:34,098 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 03:30:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:30:34,512 INFO L256 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:30:34,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:30:34,575 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:30:34,575 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:30:34,682 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:30:34,683 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1402910213] [2019-10-15 03:30:34,711 INFO L162 IcfgInterpreter]: Started Sifa with 47 locations of interest [2019-10-15 03:30:34,711 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:30:34,718 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:30:34,726 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:30:34,726 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:30:35,936 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2019-10-15 03:30:36,296 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2019-10-15 03:30:36,742 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 332 [2019-10-15 03:30:37,031 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2019-10-15 03:30:37,199 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 348 for LOIs [2019-10-15 03:30:37,575 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 410 [2019-10-15 03:30:37,795 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 438 [2019-10-15 03:30:37,970 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 497 [2019-10-15 03:30:38,180 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 494 [2019-10-15 03:30:38,390 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 491 [2019-10-15 03:30:38,629 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 488 [2019-10-15 03:30:38,815 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 485 [2019-10-15 03:30:38,994 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 482 [2019-10-15 03:30:39,627 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 523 [2019-10-15 03:30:40,174 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 520 [2019-10-15 03:30:40,367 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 517 [2019-10-15 03:30:40,621 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 514 [2019-10-15 03:30:42,844 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 635 [2019-10-15 03:30:43,224 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 632 [2019-10-15 03:30:43,828 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 633 [2019-10-15 03:30:44,112 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 630 [2019-10-15 03:30:44,441 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 627 [2019-10-15 03:30:49,274 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2019-10-15 03:30:49,550 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-10-15 03:30:49,873 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-10-15 03:30:50,127 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6