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_szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:30:20,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:30:20,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:30:20,664 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:30:20,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:30:20,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:30:20,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:30:20,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:30:20,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:30:20,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:30:20,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:30:20,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:30:20,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:30:20,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:30:20,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:30:20,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:30:20,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:30:20,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:30:20,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:30:20,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:30:20,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:30:20,686 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:30:20,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:30:20,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:30:20,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:30:20,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:30:20,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:30:20,698 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:30:20,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:30:20,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:30:20,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:30:20,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:30:20,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:30:20,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:30:20,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:30:20,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:30:20,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:30:20,712 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:30:20,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:30:20,714 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:30:20,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:30:20,718 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 03:30:20,742 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:30:20,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:30:20,744 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:30:20,745 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:30:20,745 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:30:20,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:30:20,745 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:30:20,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:30:20,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:30:20,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:30:20,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:30:20,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:30:20,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:30:20,748 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:30:20,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:30:20,748 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:30:20,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:30:20,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:30:20,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:30:20,749 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:30:20,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:30:20,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:30:20,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:30:20,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:30:20,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:30:20,751 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:30:20,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:30:20,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:30:20,751 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 03:30:21,032 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:30:21,055 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:30:21,059 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:30:21,060 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:30:21,061 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:30:21,061 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-pthread/cs_szymanski.i [2019-10-15 03:30:21,141 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a613826a7/26fe7ef9e8ff43e1902c2425b5c38460/FLAGf8275271a [2019-10-15 03:30:21,758 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:30:21,761 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_szymanski.i [2019-10-15 03:30:21,789 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a613826a7/26fe7ef9e8ff43e1902c2425b5c38460/FLAGf8275271a [2019-10-15 03:30:21,995 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a613826a7/26fe7ef9e8ff43e1902c2425b5c38460 [2019-10-15 03:30:22,007 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:30:22,009 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:30:22,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:30:22,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:30:22,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:30:22,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:30:21" (1/1) ... [2019-10-15 03:30:22,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b2e6592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:22, skipping insertion in model container [2019-10-15 03:30:22,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:30:21" (1/1) ... [2019-10-15 03:30:22,028 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:30:22,110 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:30:22,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:30:22,830 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:30:22,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:30:23,032 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:30:23,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:23 WrapperNode [2019-10-15 03:30:23,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:30:23,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:30:23,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:30:23,034 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:30:23,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:23" (1/1) ... [2019-10-15 03:30:23,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:23" (1/1) ... [2019-10-15 03:30:23,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:23" (1/1) ... [2019-10-15 03:30:23,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:23" (1/1) ... [2019-10-15 03:30:23,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:23" (1/1) ... [2019-10-15 03:30:23,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:23" (1/1) ... [2019-10-15 03:30:23,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:23" (1/1) ... [2019-10-15 03:30:23,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:30:23,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:30:23,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:30:23,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:30:23,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:23" (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 03:30:23,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:30:23,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:30:23,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2019-10-15 03:30:23,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-15 03:30:23,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-15 03:30:23,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-10-15 03:30:23,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-10-15 03:30:23,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-10-15 03:30:23,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 03:30:23,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2019-10-15 03:30:23,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_init [2019-10-15 03:30:23,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_destroy [2019-10-15 03:30:23,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2019-10-15 03:30:23,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2019-10-15 03:30:23,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_init [2019-10-15 03:30:23,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_signal [2019-10-15 03:30:23,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_broadcast [2019-10-15 03:30:23,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_wait [2019-10-15 03:30:23,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_assert [2019-10-15 03:30:23,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_assume [2019-10-15 03:30:23,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2019-10-15 03:30:23,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2019-10-15 03:30:23,270 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-10-15 03:30:23,270 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2019-10-15 03:30:23,270 INFO L138 BoogieDeclarations]: Found implementation of procedure main_thread [2019-10-15 03:30:23,271 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:30:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:30:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-15 03:30:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-10-15 03:30:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 03:30:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:30:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-15 03:30:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-15 03:30:23,273 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-15 03:30:23,273 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-15 03:30:23,273 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-15 03:30:23,273 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-15 03:30:23,273 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-15 03:30:23,274 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-15 03:30:23,274 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-15 03:30:23,274 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-15 03:30:23,274 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-15 03:30:23,274 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-15 03:30:23,275 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-15 03:30:23,276 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-15 03:30:23,276 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-15 03:30:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-15 03:30:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-15 03:30:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-15 03:30:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-10-15 03:30:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-10-15 03:30:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-10-15 03:30:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-15 03:30:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-15 03:30:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-15 03:30:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-15 03:30:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-15 03:30:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-15 03:30:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-15 03:30:23,280 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-15 03:30:23,280 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-15 03:30:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-15 03:30:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-15 03:30:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-15 03:30:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-15 03:30:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-15 03:30:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-15 03:30:23,282 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-15 03:30:23,283 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-15 03:30:23,283 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-15 03:30:23,283 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-15 03:30:23,283 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-15 03:30:23,284 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-15 03:30:23,285 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-15 03:30:23,285 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-15 03:30:23,285 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-15 03:30:23,286 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-15 03:30:23,286 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-15 03:30:23,286 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-15 03:30:23,287 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-15 03:30:23,287 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-15 03:30:23,288 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-15 03:30:23,288 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-15 03:30:23,288 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-15 03:30:23,289 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-15 03:30:23,289 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-15 03:30:23,289 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:30:23,290 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 03:30:23,290 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-15 03:30:23,290 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:30:23,291 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-15 03:30:23,291 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-15 03:30:23,291 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-15 03:30:23,291 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-15 03:30:23,291 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-15 03:30:23,291 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-15 03:30:23,292 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-15 03:30:23,292 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-15 03:30:23,292 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:30:23,292 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-15 03:30:23,292 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-15 03:30:23,293 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-15 03:30:23,293 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-15 03:30:23,293 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-15 03:30:23,293 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-15 03:30:23,293 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-15 03:30:23,293 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-15 03:30:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-15 03:30:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-15 03:30:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-15 03:30:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-15 03:30:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-15 03:30:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-15 03:30:23,295 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-15 03:30:23,295 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-15 03:30:23,295 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-15 03:30:23,295 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-15 03:30:23,296 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-15 03:30:23,296 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-15 03:30:23,296 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-15 03:30:23,296 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-15 03:30:23,297 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-15 03:30:23,297 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-15 03:30:23,297 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-15 03:30:23,297 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-15 03:30:23,297 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-15 03:30:23,298 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-15 03:30:23,298 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-15 03:30:23,298 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-15 03:30:23,298 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-15 03:30:23,298 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-15 03:30:23,299 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-15 03:30:23,300 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-15 03:30:23,300 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-15 03:30:23,305 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-15 03:30:23,305 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-15 03:30:23,305 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-15 03:30:23,305 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-15 03:30:23,306 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:30:23,306 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2019-10-15 03:30:23,307 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2019-10-15 03:30:23,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 03:30:23,307 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2019-10-15 03:30:23,308 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_init [2019-10-15 03:30:23,315 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_destroy [2019-10-15 03:30:23,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:30:23,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:30:23,316 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2019-10-15 03:30:23,316 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2019-10-15 03:30:23,316 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_init [2019-10-15 03:30:23,317 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_signal [2019-10-15 03:30:23,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:30:23,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:30:23,317 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_broadcast [2019-10-15 03:30:23,317 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_wait [2019-10-15 03:30:23,317 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_assert [2019-10-15 03:30:23,318 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_assume [2019-10-15 03:30:23,318 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2019-10-15 03:30:23,318 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2019-10-15 03:30:23,318 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-10-15 03:30:23,318 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2019-10-15 03:30:23,318 INFO L130 BoogieDeclarations]: Found specification of procedure main_thread [2019-10-15 03:30:23,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:30:23,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:30:23,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:30:23,319 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:30:23,319 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2019-10-15 03:30:23,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:30:23,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 03:30:23,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:30:24,262 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-10-15 03:30:24,263 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume !(0 != ~__CS_ret~0 % 256); [2019-10-15 03:30:24,385 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-10-15 03:30:24,385 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume !(0 != ~__CS_ret~0 % 256); [2019-10-15 03:30:31,712 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:30:31,712 INFO L284 CfgBuilder]: Removed 12 assume(true) statements. [2019-10-15 03:30:31,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:30:31 BoogieIcfgContainer [2019-10-15 03:30:31,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:30:31,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:30:31,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:30:31,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:30:31,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:30:21" (1/3) ... [2019-10-15 03:30:31,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@614a31b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:30:31, skipping insertion in model container [2019-10-15 03:30:31,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:23" (2/3) ... [2019-10-15 03:30:31,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@614a31b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:30:31, skipping insertion in model container [2019-10-15 03:30:31,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:30:31" (3/3) ... [2019-10-15 03:30:31,721 INFO L109 eAbstractionObserver]: Analyzing ICFG cs_szymanski.i [2019-10-15 03:30:31,731 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:30:31,741 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:30:31,754 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:30:31,780 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:30:31,780 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:30:31,781 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:30:31,781 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:30:31,781 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:30:31,781 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:30:31,781 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:30:31,781 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:30:31,804 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states. [2019-10-15 03:30:31,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-15 03:30:31,811 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:30:31,812 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:30:31,815 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:30:31,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:30:31,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1999208549, now seen corresponding path program 1 times [2019-10-15 03:30:31,833 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:30:31,834 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678557188] [2019-10-15 03:30:31,834 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:31,834 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:31,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:30:32,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:30:32,265 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 03:30:32,265 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678557188] [2019-10-15 03:30:32,266 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:30:32,267 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:30:32,267 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483978744] [2019-10-15 03:30:32,272 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:30:32,272 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:30:32,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:30:32,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:30:32,291 INFO L87 Difference]: Start difference. First operand 163 states. Second operand 3 states. [2019-10-15 03:30:34,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:30:34,390 INFO L93 Difference]: Finished difference Result 117 states and 152 transitions. [2019-10-15 03:30:34,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:30:34,392 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-10-15 03:30:34,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:30:34,404 INFO L225 Difference]: With dead ends: 117 [2019-10-15 03:30:34,404 INFO L226 Difference]: Without dead ends: 57 [2019-10-15 03:30:34,408 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 03:30:34,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-10-15 03:30:34,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2019-10-15 03:30:34,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-10-15 03:30:34,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2019-10-15 03:30:34,511 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 16 [2019-10-15 03:30:34,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:30:34,515 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2019-10-15 03:30:34,515 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:30:34,516 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2019-10-15 03:30:34,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-15 03:30:34,523 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:30:34,523 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 03:30:34,524 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:30:34,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:30:34,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1279144083, now seen corresponding path program 1 times [2019-10-15 03:30:34,527 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:30:34,527 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677529478] [2019-10-15 03:30:34,527 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:34,527 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:34,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:30:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:30:34,691 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 03:30:34,692 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677529478] [2019-10-15 03:30:34,692 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:30:34,692 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:30:34,693 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296624321] [2019-10-15 03:30:34,697 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:30:34,698 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:30:34,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:30:34,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:30:34,699 INFO L87 Difference]: Start difference. First operand 56 states and 72 transitions. Second operand 3 states. [2019-10-15 03:30:34,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:30:34,731 INFO L93 Difference]: Finished difference Result 107 states and 140 transitions. [2019-10-15 03:30:34,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:30:34,733 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-10-15 03:30:34,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:30:34,737 INFO L225 Difference]: With dead ends: 107 [2019-10-15 03:30:34,737 INFO L226 Difference]: Without dead ends: 57 [2019-10-15 03:30:34,739 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 03:30:34,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-10-15 03:30:34,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2019-10-15 03:30:34,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-10-15 03:30:34,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 73 transitions. [2019-10-15 03:30:34,761 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 73 transitions. Word has length 18 [2019-10-15 03:30:34,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:30:34,761 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 73 transitions. [2019-10-15 03:30:34,762 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:30:34,762 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 73 transitions. [2019-10-15 03:30:34,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-15 03:30:34,766 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:30:34,766 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 03:30:34,767 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:30:34,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:30:34,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1273468502, now seen corresponding path program 1 times [2019-10-15 03:30:34,768 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:30:34,768 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608820103] [2019-10-15 03:30:34,768 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:34,769 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:34,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:30:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:30:34,944 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 03:30:34,945 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608820103] [2019-10-15 03:30:34,945 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:30:34,945 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:30:34,945 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274036968] [2019-10-15 03:30:34,946 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:30:34,946 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:30:34,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:30:34,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:30:34,947 INFO L87 Difference]: Start difference. First operand 57 states and 73 transitions. Second operand 5 states. [2019-10-15 03:30:35,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:30:35,000 INFO L93 Difference]: Finished difference Result 95 states and 124 transitions. [2019-10-15 03:30:35,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:30:35,001 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-10-15 03:30:35,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:30:35,005 INFO L225 Difference]: With dead ends: 95 [2019-10-15 03:30:35,005 INFO L226 Difference]: Without dead ends: 88 [2019-10-15 03:30:35,006 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 03:30:35,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2019-10-15 03:30:35,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2019-10-15 03:30:35,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2019-10-15 03:30:35,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 113 transitions. [2019-10-15 03:30:35,022 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 113 transitions. Word has length 19 [2019-10-15 03:30:35,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:30:35,023 INFO L462 AbstractCegarLoop]: Abstraction has 86 states and 113 transitions. [2019-10-15 03:30:35,023 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:30:35,023 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 113 transitions. [2019-10-15 03:30:35,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-15 03:30:35,025 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:30:35,025 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 03:30:35,026 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:30:35,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:30:35,026 INFO L82 PathProgramCache]: Analyzing trace with hash -814694976, now seen corresponding path program 1 times [2019-10-15 03:30:35,026 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:30:35,027 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67314647] [2019-10-15 03:30:35,027 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:35,027 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:35,027 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:30:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:30:35,927 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 03:30:35,928 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67314647] [2019-10-15 03:30:35,928 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332090845] [2019-10-15 03:30:35,929 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 03:30:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:30:36,278 INFO L256 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:30:36,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:30:36,322 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 03:30:36,322 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:30:36,421 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 03:30:36,421 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2119276579] [2019-10-15 03:30:36,449 INFO L162 IcfgInterpreter]: Started Sifa with 47 locations of interest [2019-10-15 03:30:36,449 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:30:36,455 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:30:36,463 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:30:36,463 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:30:38,032 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 307 DAG size of output: 305 [2019-10-15 03:30:38,328 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 321 for LOIs [2019-10-15 03:30:39,307 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-15 03:30:40,571 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:30:40,820 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:30:41,092 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 561 [2019-10-15 03:30:41,474 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-15 03:30:41,877 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 559 [2019-10-15 03:30:46,661 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2019-10-15 03:30:47,960 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:48,329 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:48,376 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:48,406 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:48,447 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:48,800 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:48,841 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:48,875 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:48,923 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:49,073 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:49,156 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:49,185 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:49,286 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:49,315 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:49,449 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:49,496 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:50,359 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:50,486 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:30:55,424 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 75 [2019-10-15 03:31:00,182 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 81