/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98196c323137eee61a7c1131837b356358d783d4-98196c3 [2021-06-16 14:58:54,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-16 14:58:54,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-16 14:58:54,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-16 14:58:54,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-16 14:58:54,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-16 14:58:54,846 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-16 14:58:54,850 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-16 14:58:54,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-16 14:58:54,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-16 14:58:54,856 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-16 14:58:54,857 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-16 14:58:54,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-16 14:58:54,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-16 14:58:54,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-16 14:58:54,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-16 14:58:54,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-16 14:58:54,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-16 14:58:54,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-16 14:58:54,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-16 14:58:54,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-16 14:58:54,867 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-16 14:58:54,870 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-16 14:58:54,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-16 14:58:54,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-16 14:58:54,878 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-16 14:58:54,878 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-16 14:58:54,879 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-16 14:58:54,879 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-16 14:58:54,880 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-16 14:58:54,880 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-16 14:58:54,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-16 14:58:54,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-16 14:58:54,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-16 14:58:54,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-16 14:58:54,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-16 14:58:54,887 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf [2021-06-16 14:58:54,916 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-16 14:58:54,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-16 14:58:54,918 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-16 14:58:54,918 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-16 14:58:54,918 INFO L138 SettingsManager]: * Use SBE=true [2021-06-16 14:58:54,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-16 14:58:54,919 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-16 14:58:54,919 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-16 14:58:54,919 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-16 14:58:54,919 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-16 14:58:54,920 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-16 14:58:54,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-16 14:58:54,920 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-16 14:58:54,920 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-16 14:58:54,920 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-16 14:58:54,920 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-16 14:58:54,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-16 14:58:54,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-16 14:58:54,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-16 14:58:54,921 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-16 14:58:54,921 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-16 14:58:54,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-16 14:58:54,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-16 14:58:54,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-16 14:58:54,921 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-16 14:58:54,921 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-16 14:58:54,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-16 14:58:54,921 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-16 14:58:54,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-16 14:58:54,922 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-16 14:58:54,922 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-16 14:58:55,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-16 14:58:55,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-16 14:58:55,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-16 14:58:55,156 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-16 14:58:55,157 INFO L275 PluginConnector]: CDTParser initialized [2021-06-16 14:58:55,158 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/szymanski.i [2021-06-16 14:58:55,206 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e44e46757/40e6a3e824d140c6898f7c8e76ace60e/FLAG0d54519b1 [2021-06-16 14:58:55,609 INFO L306 CDTParser]: Found 1 translation units. [2021-06-16 14:58:55,610 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i [2021-06-16 14:58:55,624 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e44e46757/40e6a3e824d140c6898f7c8e76ace60e/FLAG0d54519b1 [2021-06-16 14:58:55,634 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e44e46757/40e6a3e824d140c6898f7c8e76ace60e [2021-06-16 14:58:55,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-16 14:58:55,639 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-16 14:58:55,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-16 14:58:55,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-16 14:58:55,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-16 14:58:55,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.06 02:58:55" (1/1) ... [2021-06-16 14:58:55,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2464ccc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 02:58:55, skipping insertion in model container [2021-06-16 14:58:55,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.06 02:58:55" (1/1) ... [2021-06-16 14:58:55,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-16 14:58:55,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-16 14:58:55,781 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-06-16 14:58:55,915 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[31505,31518] [2021-06-16 14:58:55,921 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[32915,32928] [2021-06-16 14:58:55,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-16 14:58:55,935 INFO L203 MainTranslator]: Completed pre-run [2021-06-16 14:58:55,943 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-06-16 14:58:55,954 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[31505,31518] [2021-06-16 14:58:55,956 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[32915,32928] [2021-06-16 14:58:55,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-16 14:58:55,997 INFO L208 MainTranslator]: Completed translation [2021-06-16 14:58:55,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 02:58:55 WrapperNode [2021-06-16 14:58:55,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-16 14:58:55,999 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-16 14:58:55,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-16 14:58:55,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-16 14:58:56,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 02:58:55" (1/1) ... [2021-06-16 14:58:56,011 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 02:58:55" (1/1) ... [2021-06-16 14:58:56,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-16 14:58:56,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-16 14:58:56,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-16 14:58:56,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-16 14:58:56,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 02:58:55" (1/1) ... [2021-06-16 14:58:56,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 02:58:55" (1/1) ... [2021-06-16 14:58:56,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 02:58:55" (1/1) ... [2021-06-16 14:58:56,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 02:58:55" (1/1) ... [2021-06-16 14:58:56,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 02:58:55" (1/1) ... [2021-06-16 14:58:56,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 02:58:55" (1/1) ... [2021-06-16 14:58:56,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 02:58:55" (1/1) ... [2021-06-16 14:58:56,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-16 14:58:56,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-16 14:58:56,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-16 14:58:56,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-16 14:58:56,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 02:58:55" (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 [2021-06-16 14:58:56,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-16 14:58:56,086 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-06-16 14:58:56,086 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-06-16 14:58:56,086 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-06-16 14:58:56,086 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-06-16 14:58:56,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-16 14:58:56,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-16 14:58:56,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-16 14:58:56,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-16 14:58:56,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-16 14:58:56,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-16 14:58:56,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-16 14:58:56,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-16 14:58:56,088 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-16 14:58:56,362 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-16 14:58:56,362 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-06-16 14:58:56,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 02:58:56 BoogieIcfgContainer [2021-06-16 14:58:56,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-16 14:58:56,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-16 14:58:56,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-16 14:58:56,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-16 14:58:56,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.06 02:58:55" (1/3) ... [2021-06-16 14:58:56,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3532b90f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.06 02:58:56, skipping insertion in model container [2021-06-16 14:58:56,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 02:58:55" (2/3) ... [2021-06-16 14:58:56,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3532b90f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.06 02:58:56, skipping insertion in model container [2021-06-16 14:58:56,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 02:58:56" (3/3) ... [2021-06-16 14:58:56,369 INFO L111 eAbstractionObserver]: Analyzing ICFG szymanski.i [2021-06-16 14:58:56,373 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-16 14:58:56,373 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-16 14:58:56,373 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-06-16 14:58:56,373 INFO L470 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-16 14:58:56,404 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,404 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,404 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,404 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,404 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,405 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,407 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,407 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,407 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,407 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,407 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,408 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,408 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,409 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,409 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,409 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,409 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,409 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,410 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,410 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,410 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,410 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,410 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,410 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,410 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,410 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,410 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,411 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,411 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,411 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,411 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,411 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,412 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,412 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,412 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,412 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,412 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,413 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,413 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,413 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,415 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,415 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,415 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,415 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,415 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,415 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,416 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,416 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,416 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,416 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,417 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,417 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,417 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,417 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,417 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,417 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,418 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,418 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,418 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,418 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,418 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,418 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,418 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,418 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,419 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,419 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,419 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,419 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,419 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,419 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,419 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,419 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,420 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,420 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,420 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,421 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,421 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,421 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,421 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,421 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,421 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,421 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,421 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,422 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,422 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,422 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,422 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,422 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,422 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,422 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,422 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,424 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,424 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,424 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,425 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,426 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,427 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,427 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,427 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,431 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,433 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,434 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,434 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,434 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,434 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,438 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,438 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,438 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,439 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,439 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:58:56,452 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-16 14:58:56,468 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-16 14:58:56,487 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-16 14:58:56,487 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-16 14:58:56,487 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-16 14:58:56,487 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-16 14:58:56,487 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-16 14:58:56,488 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-16 14:58:56,488 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-16 14:58:56,488 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thr2======== [2021-06-16 14:58:56,940 INFO L276 IsEmpty]: Start isEmpty. Operand has 3267 states, 3184 states have (on average 2.482097989949749) internal successors, (7903), 3266 states have internal predecessors, (7903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:56,963 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-16 14:58:56,963 INFO L301 ceAbstractionStarter]: Result for error location thr2 was SAFE (1/5) [2021-06-16 14:58:56,965 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-16 14:58:56,966 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-16 14:58:56,966 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-16 14:58:56,966 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-16 14:58:56,966 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-16 14:58:56,966 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-16 14:58:56,966 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-16 14:58:56,966 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-16 14:58:56,966 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thr1======== [2021-06-16 14:58:57,178 INFO L276 IsEmpty]: Start isEmpty. Operand has 3267 states, 3184 states have (on average 2.482097989949749) internal successors, (7903), 3266 states have internal predecessors, (7903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:57,187 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-16 14:58:57,187 INFO L301 ceAbstractionStarter]: Result for error location thr1 was SAFE (2/5) [2021-06-16 14:58:57,187 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-16 14:58:57,194 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-16 14:58:57,195 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-16 14:58:57,195 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-16 14:58:57,195 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-16 14:58:57,195 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-16 14:58:57,195 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-16 14:58:57,195 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-16 14:58:57,195 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thr1Thread1of1ForFork0======== [2021-06-16 14:58:57,401 INFO L276 IsEmpty]: Start isEmpty. Operand has 3267 states, 3184 states have (on average 2.482097989949749) internal successors, (7903), 3266 states have internal predecessors, (7903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:57,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-06-16 14:58:57,403 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 14:58:57,403 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 14:58:57,404 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 14:58:57,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 14:58:57,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1929720339, now seen corresponding path program 1 times [2021-06-16 14:58:57,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 14:58:57,415 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038558389] [2021-06-16 14:58:57,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 14:58:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 14:58:57,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:57,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 14:58:57,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:57,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 14:58:57,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 14:58:57,569 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 14:58:57,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038558389] [2021-06-16 14:58:57,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038558389] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 14:58:57,571 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 14:58:57,571 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-16 14:58:57,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200634378] [2021-06-16 14:58:57,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-16 14:58:57,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 14:58:57,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-16 14:58:57,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-16 14:58:57,587 INFO L87 Difference]: Start difference. First operand has 3267 states, 3184 states have (on average 2.482097989949749) internal successors, (7903), 3266 states have internal predecessors, (7903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:57,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 14:58:57,628 INFO L93 Difference]: Finished difference Result 3267 states and 6833 transitions. [2021-06-16 14:58:57,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 14:58:57,629 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-06-16 14:58:57,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 14:58:57,652 INFO L225 Difference]: With dead ends: 3267 [2021-06-16 14:58:57,652 INFO L226 Difference]: Without dead ends: 2193 [2021-06-16 14:58:57,653 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-16 14:58:57,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2021-06-16 14:58:57,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2193. [2021-06-16 14:58:57,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2193 states, 2180 states have (on average 2.1981651376146787) internal successors, (4792), 2192 states have internal predecessors, (4792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:57,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 4792 transitions. [2021-06-16 14:58:57,757 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 4792 transitions. Word has length 31 [2021-06-16 14:58:57,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 14:58:57,758 INFO L482 AbstractCegarLoop]: Abstraction has 2193 states and 4792 transitions. [2021-06-16 14:58:57,758 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:57,758 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 4792 transitions. [2021-06-16 14:58:57,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-06-16 14:58:57,760 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 14:58:57,760 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 14:58:57,760 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-16 14:58:57,760 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 14:58:57,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 14:58:57,761 INFO L82 PathProgramCache]: Analyzing trace with hash -2126204053, now seen corresponding path program 1 times [2021-06-16 14:58:57,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 14:58:57,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419707874] [2021-06-16 14:58:57,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 14:58:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 14:58:57,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:57,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 14:58:57,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:57,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 14:58:57,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:57,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 14:58:57,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 14:58:57,848 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 14:58:57,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419707874] [2021-06-16 14:58:57,848 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419707874] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 14:58:57,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 14:58:57,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-16 14:58:57,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108583885] [2021-06-16 14:58:57,850 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-16 14:58:57,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 14:58:57,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-16 14:58:57,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 14:58:57,852 INFO L87 Difference]: Start difference. First operand 2193 states and 4792 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:57,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 14:58:57,885 INFO L93 Difference]: Finished difference Result 2085 states and 4520 transitions. [2021-06-16 14:58:57,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 14:58:57,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-06-16 14:58:57,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 14:58:57,893 INFO L225 Difference]: With dead ends: 2085 [2021-06-16 14:58:57,893 INFO L226 Difference]: Without dead ends: 1320 [2021-06-16 14:58:57,894 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 14:58:57,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2021-06-16 14:58:57,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1320. [2021-06-16 14:58:57,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1312 states have (on average 2.191310975609756) internal successors, (2875), 1319 states have internal predecessors, (2875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:57,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 2875 transitions. [2021-06-16 14:58:57,922 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 2875 transitions. Word has length 31 [2021-06-16 14:58:57,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 14:58:57,923 INFO L482 AbstractCegarLoop]: Abstraction has 1320 states and 2875 transitions. [2021-06-16 14:58:57,923 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:57,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 2875 transitions. [2021-06-16 14:58:57,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 14:58:57,927 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 14:58:57,927 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2021-06-16 14:58:57,927 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-16 14:58:57,927 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 14:58:57,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 14:58:57,928 INFO L82 PathProgramCache]: Analyzing trace with hash -357273704, now seen corresponding path program 1 times [2021-06-16 14:58:57,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 14:58:57,928 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160136874] [2021-06-16 14:58:57,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 14:58:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 14:58:57,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:57,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 14:58:57,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:57,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 14:58:57,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:57,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 14:58:57,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:57,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 14:58:57,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 14:58:57,982 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 14:58:57,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160136874] [2021-06-16 14:58:57,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160136874] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 14:58:57,982 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 14:58:57,982 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-16 14:58:57,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039296083] [2021-06-16 14:58:57,983 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-16 14:58:57,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 14:58:57,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-16 14:58:57,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-16 14:58:57,983 INFO L87 Difference]: Start difference. First operand 1320 states and 2875 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:58,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 14:58:58,069 INFO L93 Difference]: Finished difference Result 1554 states and 3357 transitions. [2021-06-16 14:58:58,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-16 14:58:58,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 14:58:58,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 14:58:58,073 INFO L225 Difference]: With dead ends: 1554 [2021-06-16 14:58:58,074 INFO L226 Difference]: Without dead ends: 1202 [2021-06-16 14:58:58,074 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-16 14:58:58,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2021-06-16 14:58:58,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1096. [2021-06-16 14:58:58,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1096 states, 1088 states have (on average 2.120404411764706) internal successors, (2307), 1095 states have internal predecessors, (2307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:58,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 2307 transitions. [2021-06-16 14:58:58,092 INFO L78 Accepts]: Start accepts. Automaton has 1096 states and 2307 transitions. Word has length 48 [2021-06-16 14:58:58,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 14:58:58,092 INFO L482 AbstractCegarLoop]: Abstraction has 1096 states and 2307 transitions. [2021-06-16 14:58:58,093 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:58,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1096 states and 2307 transitions. [2021-06-16 14:58:58,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 14:58:58,094 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 14:58:58,095 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2021-06-16 14:58:58,095 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-16 14:58:58,095 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 14:58:58,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 14:58:58,095 INFO L82 PathProgramCache]: Analyzing trace with hash -505656532, now seen corresponding path program 2 times [2021-06-16 14:58:58,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 14:58:58,097 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622871660] [2021-06-16 14:58:58,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 14:58:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 14:58:58,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:58,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 14:58:58,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:58,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 14:58:58,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:58,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 14:58:58,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:58,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 14:58:58,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 14:58:58,152 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 14:58:58,153 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622871660] [2021-06-16 14:58:58,153 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622871660] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 14:58:58,153 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 14:58:58,153 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-16 14:58:58,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043467985] [2021-06-16 14:58:58,153 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-16 14:58:58,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 14:58:58,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-16 14:58:58,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-16 14:58:58,154 INFO L87 Difference]: Start difference. First operand 1096 states and 2307 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:58,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 14:58:58,237 INFO L93 Difference]: Finished difference Result 1486 states and 3065 transitions. [2021-06-16 14:58:58,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-16 14:58:58,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 14:58:58,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 14:58:58,242 INFO L225 Difference]: With dead ends: 1486 [2021-06-16 14:58:58,242 INFO L226 Difference]: Without dead ends: 1382 [2021-06-16 14:58:58,242 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-16 14:58:58,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2021-06-16 14:58:58,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1184. [2021-06-16 14:58:58,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 1176 states have (on average 2.063775510204082) internal successors, (2427), 1183 states have internal predecessors, (2427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:58,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 2427 transitions. [2021-06-16 14:58:58,272 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 2427 transitions. Word has length 48 [2021-06-16 14:58:58,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 14:58:58,273 INFO L482 AbstractCegarLoop]: Abstraction has 1184 states and 2427 transitions. [2021-06-16 14:58:58,274 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:58,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 2427 transitions. [2021-06-16 14:58:58,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 14:58:58,276 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 14:58:58,276 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2021-06-16 14:58:58,276 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-16 14:58:58,276 INFO L430 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 14:58:58,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 14:58:58,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1030723354, now seen corresponding path program 3 times [2021-06-16 14:58:58,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 14:58:58,277 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477461533] [2021-06-16 14:58:58,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 14:58:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 14:58:58,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:58,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 14:58:58,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:58,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 14:58:58,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:58,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 14:58:58,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:58,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 14:58:58,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 14:58:58,332 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 14:58:58,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477461533] [2021-06-16 14:58:58,332 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477461533] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 14:58:58,332 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 14:58:58,332 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-16 14:58:58,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662640015] [2021-06-16 14:58:58,333 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-16 14:58:58,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 14:58:58,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-16 14:58:58,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-16 14:58:58,333 INFO L87 Difference]: Start difference. First operand 1184 states and 2427 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:58,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 14:58:58,387 INFO L93 Difference]: Finished difference Result 1755 states and 3530 transitions. [2021-06-16 14:58:58,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-16 14:58:58,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 14:58:58,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 14:58:58,393 INFO L225 Difference]: With dead ends: 1755 [2021-06-16 14:58:58,393 INFO L226 Difference]: Without dead ends: 1755 [2021-06-16 14:58:58,393 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-16 14:58:58,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1755 states. [2021-06-16 14:58:58,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1755 to 1356. [2021-06-16 14:58:58,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1348 states have (on average 2.0734421364985165) internal successors, (2795), 1355 states have internal predecessors, (2795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:58,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 2795 transitions. [2021-06-16 14:58:58,419 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 2795 transitions. Word has length 48 [2021-06-16 14:58:58,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 14:58:58,419 INFO L482 AbstractCegarLoop]: Abstraction has 1356 states and 2795 transitions. [2021-06-16 14:58:58,419 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:58,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 2795 transitions. [2021-06-16 14:58:58,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 14:58:58,421 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 14:58:58,421 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2021-06-16 14:58:58,422 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-16 14:58:58,422 INFO L430 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 14:58:58,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 14:58:58,422 INFO L82 PathProgramCache]: Analyzing trace with hash -800690108, now seen corresponding path program 4 times [2021-06-16 14:58:58,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 14:58:58,422 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426818944] [2021-06-16 14:58:58,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 14:58:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 14:58:58,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:58,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 14:58:58,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:58,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 14:58:58,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:58,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 14:58:58,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:58,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 14:58:58,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 14:58:58,446 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 14:58:58,446 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426818944] [2021-06-16 14:58:58,446 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426818944] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 14:58:58,446 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 14:58:58,446 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-16 14:58:58,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672893564] [2021-06-16 14:58:58,446 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-16 14:58:58,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 14:58:58,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-16 14:58:58,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-16 14:58:58,447 INFO L87 Difference]: Start difference. First operand 1356 states and 2795 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:58,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 14:58:58,490 INFO L93 Difference]: Finished difference Result 1237 states and 2536 transitions. [2021-06-16 14:58:58,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-16 14:58:58,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 14:58:58,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 14:58:58,491 INFO L225 Difference]: With dead ends: 1237 [2021-06-16 14:58:58,491 INFO L226 Difference]: Without dead ends: 0 [2021-06-16 14:58:58,491 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-16 14:58:58,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-16 14:58:58,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-16 14:58:58,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:58,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-16 14:58:58,492 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2021-06-16 14:58:58,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 14:58:58,492 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-16 14:58:58,492 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:58,492 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-16 14:58:58,492 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-16 14:58:58,492 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-16 14:58:58,492 INFO L301 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork0 was SAFE (3/5) [2021-06-16 14:58:58,493 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-16 14:58:58,494 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-16 14:58:58,494 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-16 14:58:58,494 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-16 14:58:58,494 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-16 14:58:58,494 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-16 14:58:58,494 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-16 14:58:58,494 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-16 14:58:58,494 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-16 14:58:58,643 INFO L276 IsEmpty]: Start isEmpty. Operand has 3267 states, 3184 states have (on average 2.482097989949749) internal successors, (7903), 3266 states have internal predecessors, (7903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:58,652 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-16 14:58:58,653 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (4/5) [2021-06-16 14:58:58,654 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-16 14:58:58,655 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-16 14:58:58,655 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-16 14:58:58,655 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-16 14:58:58,655 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-16 14:58:58,655 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-16 14:58:58,655 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-16 14:58:58,655 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-16 14:58:58,655 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thr2Thread1of1ForFork1======== [2021-06-16 14:58:58,802 INFO L276 IsEmpty]: Start isEmpty. Operand has 3267 states, 3184 states have (on average 2.482097989949749) internal successors, (7903), 3266 states have internal predecessors, (7903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:58,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-06-16 14:58:58,804 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 14:58:58,804 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 14:58:58,804 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 14:58:58,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 14:58:58,804 INFO L82 PathProgramCache]: Analyzing trace with hash 2102570016, now seen corresponding path program 1 times [2021-06-16 14:58:58,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 14:58:58,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416920304] [2021-06-16 14:58:58,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 14:58:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 14:58:58,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:58,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 14:58:58,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:58,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 14:58:58,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 14:58:58,829 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 14:58:58,829 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416920304] [2021-06-16 14:58:58,829 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416920304] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 14:58:58,829 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 14:58:58,829 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-16 14:58:58,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215986524] [2021-06-16 14:58:58,830 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-16 14:58:58,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 14:58:58,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-16 14:58:58,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-16 14:58:58,835 INFO L87 Difference]: Start difference. First operand has 3267 states, 3184 states have (on average 2.482097989949749) internal successors, (7903), 3266 states have internal predecessors, (7903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:58,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 14:58:58,848 INFO L93 Difference]: Finished difference Result 3267 states and 6833 transitions. [2021-06-16 14:58:58,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 14:58:58,848 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-06-16 14:58:58,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 14:58:58,855 INFO L225 Difference]: With dead ends: 3267 [2021-06-16 14:58:58,855 INFO L226 Difference]: Without dead ends: 2213 [2021-06-16 14:58:58,856 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-16 14:58:58,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2213 states. [2021-06-16 14:58:58,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2213 to 2213. [2021-06-16 14:58:58,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2213 states, 2201 states have (on average 2.183098591549296) internal successors, (4805), 2212 states have internal predecessors, (4805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:58,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2213 states to 2213 states and 4805 transitions. [2021-06-16 14:58:58,896 INFO L78 Accepts]: Start accepts. Automaton has 2213 states and 4805 transitions. Word has length 37 [2021-06-16 14:58:58,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 14:58:58,896 INFO L482 AbstractCegarLoop]: Abstraction has 2213 states and 4805 transitions. [2021-06-16 14:58:58,896 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:58,896 INFO L276 IsEmpty]: Start isEmpty. Operand 2213 states and 4805 transitions. [2021-06-16 14:58:58,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-06-16 14:58:58,906 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 14:58:58,906 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 14:58:58,906 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-16 14:58:58,906 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 14:58:58,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 14:58:58,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1906086302, now seen corresponding path program 1 times [2021-06-16 14:58:58,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 14:58:58,907 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532291889] [2021-06-16 14:58:58,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 14:58:58,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 14:58:58,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:58,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 14:58:58,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:58,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 14:58:58,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:58,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 14:58:58,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 14:58:58,933 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 14:58:58,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532291889] [2021-06-16 14:58:58,934 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532291889] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 14:58:58,934 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 14:58:58,934 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-16 14:58:58,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343492618] [2021-06-16 14:58:58,935 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-16 14:58:58,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 14:58:58,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-16 14:58:58,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 14:58:58,935 INFO L87 Difference]: Start difference. First operand 2213 states and 4805 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:58,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 14:58:58,949 INFO L93 Difference]: Finished difference Result 2117 states and 4545 transitions. [2021-06-16 14:58:58,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 14:58:58,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-06-16 14:58:58,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 14:58:58,953 INFO L225 Difference]: With dead ends: 2117 [2021-06-16 14:58:58,953 INFO L226 Difference]: Without dead ends: 1315 [2021-06-16 14:58:58,954 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 14:58:58,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2021-06-16 14:58:58,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1315. [2021-06-16 14:58:58,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1315 states, 1307 states have (on average 2.1958684009181333) internal successors, (2870), 1314 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:58,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 2870 transitions. [2021-06-16 14:58:58,972 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 2870 transitions. Word has length 37 [2021-06-16 14:58:58,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 14:58:58,972 INFO L482 AbstractCegarLoop]: Abstraction has 1315 states and 2870 transitions. [2021-06-16 14:58:58,973 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:58,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 2870 transitions. [2021-06-16 14:58:58,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 14:58:58,975 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 14:58:58,975 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2021-06-16 14:58:58,975 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-16 14:58:58,975 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 14:58:58,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 14:58:58,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1899000172, now seen corresponding path program 1 times [2021-06-16 14:58:58,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 14:58:58,976 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480793555] [2021-06-16 14:58:58,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 14:58:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 14:58:59,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:59,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 14:58:59,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:59,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 14:58:59,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:59,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 14:58:59,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:59,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 14:58:59,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 14:58:59,010 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 14:58:59,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480793555] [2021-06-16 14:58:59,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480793555] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 14:58:59,010 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 14:58:59,010 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-16 14:58:59,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388204946] [2021-06-16 14:58:59,010 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-16 14:58:59,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 14:58:59,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-16 14:58:59,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-16 14:58:59,011 INFO L87 Difference]: Start difference. First operand 1315 states and 2870 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:59,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 14:58:59,067 INFO L93 Difference]: Finished difference Result 1569 states and 3384 transitions. [2021-06-16 14:58:59,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-16 14:58:59,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 14:58:59,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 14:58:59,071 INFO L225 Difference]: With dead ends: 1569 [2021-06-16 14:58:59,071 INFO L226 Difference]: Without dead ends: 1129 [2021-06-16 14:58:59,071 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-16 14:58:59,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2021-06-16 14:58:59,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 1023. [2021-06-16 14:58:59,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 1015 states have (on average 2.110344827586207) internal successors, (2142), 1022 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:59,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 2142 transitions. [2021-06-16 14:58:59,087 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 2142 transitions. Word has length 48 [2021-06-16 14:58:59,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 14:58:59,087 INFO L482 AbstractCegarLoop]: Abstraction has 1023 states and 2142 transitions. [2021-06-16 14:58:59,087 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:59,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 2142 transitions. [2021-06-16 14:58:59,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 14:58:59,089 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 14:58:59,089 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2021-06-16 14:58:59,089 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-16 14:58:59,089 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 14:58:59,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 14:58:59,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1680845826, now seen corresponding path program 2 times [2021-06-16 14:58:59,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 14:58:59,090 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003428633] [2021-06-16 14:58:59,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 14:58:59,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 14:58:59,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:59,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 14:58:59,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:59,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 14:58:59,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:59,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 14:58:59,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:59,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 14:58:59,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 14:58:59,133 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 14:58:59,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003428633] [2021-06-16 14:58:59,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003428633] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 14:58:59,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 14:58:59,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-16 14:58:59,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626490791] [2021-06-16 14:58:59,133 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-16 14:58:59,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 14:58:59,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-16 14:58:59,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-16 14:58:59,134 INFO L87 Difference]: Start difference. First operand 1023 states and 2142 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:59,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 14:58:59,192 INFO L93 Difference]: Finished difference Result 1413 states and 2896 transitions. [2021-06-16 14:58:59,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-16 14:58:59,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 14:58:59,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 14:58:59,196 INFO L225 Difference]: With dead ends: 1413 [2021-06-16 14:58:59,196 INFO L226 Difference]: Without dead ends: 1305 [2021-06-16 14:58:59,196 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-16 14:58:59,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2021-06-16 14:58:59,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1111. [2021-06-16 14:58:59,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1103 states have (on average 2.0507706255666363) internal successors, (2262), 1110 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:59,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2262 transitions. [2021-06-16 14:58:59,226 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2262 transitions. Word has length 48 [2021-06-16 14:58:59,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 14:58:59,227 INFO L482 AbstractCegarLoop]: Abstraction has 1111 states and 2262 transitions. [2021-06-16 14:58:59,227 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:59,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2262 transitions. [2021-06-16 14:58:59,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 14:58:59,229 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 14:58:59,229 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2021-06-16 14:58:59,229 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-16 14:58:59,229 INFO L430 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 14:58:59,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 14:58:59,229 INFO L82 PathProgramCache]: Analyzing trace with hash 817211984, now seen corresponding path program 3 times [2021-06-16 14:58:59,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 14:58:59,230 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719756201] [2021-06-16 14:58:59,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 14:58:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 14:58:59,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:59,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 14:58:59,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:59,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 14:58:59,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:59,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 14:58:59,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:59,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 14:58:59,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 14:58:59,249 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 14:58:59,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719756201] [2021-06-16 14:58:59,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719756201] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 14:58:59,249 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 14:58:59,249 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-16 14:58:59,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418990078] [2021-06-16 14:58:59,249 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-16 14:58:59,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 14:58:59,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-16 14:58:59,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-16 14:58:59,250 INFO L87 Difference]: Start difference. First operand 1111 states and 2262 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:59,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 14:58:59,305 INFO L93 Difference]: Finished difference Result 1555 states and 3122 transitions. [2021-06-16 14:58:59,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-16 14:58:59,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 14:58:59,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 14:58:59,310 INFO L225 Difference]: With dead ends: 1555 [2021-06-16 14:58:59,310 INFO L226 Difference]: Without dead ends: 1555 [2021-06-16 14:58:59,310 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-16 14:58:59,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2021-06-16 14:58:59,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 1283. [2021-06-16 14:58:59,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 1275 states have (on average 2.062745098039216) internal successors, (2630), 1282 states have internal predecessors, (2630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:59,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 2630 transitions. [2021-06-16 14:58:59,328 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 2630 transitions. Word has length 48 [2021-06-16 14:58:59,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 14:58:59,328 INFO L482 AbstractCegarLoop]: Abstraction has 1283 states and 2630 transitions. [2021-06-16 14:58:59,328 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:59,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 2630 transitions. [2021-06-16 14:58:59,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 14:58:59,330 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 14:58:59,330 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2021-06-16 14:58:59,330 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-16 14:58:59,330 INFO L430 AbstractCegarLoop]: === Iteration 6 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 14:58:59,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 14:58:59,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1234873710, now seen corresponding path program 4 times [2021-06-16 14:58:59,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 14:58:59,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552821032] [2021-06-16 14:58:59,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 14:58:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 14:58:59,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:59,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 14:58:59,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:59,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 14:58:59,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:59,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 14:58:59,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:58:59,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 14:58:59,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 14:58:59,350 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 14:58:59,350 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552821032] [2021-06-16 14:58:59,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552821032] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 14:58:59,350 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 14:58:59,350 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-16 14:58:59,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807397600] [2021-06-16 14:58:59,350 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-16 14:58:59,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 14:58:59,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-16 14:58:59,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-16 14:58:59,351 INFO L87 Difference]: Start difference. First operand 1283 states and 2630 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:59,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 14:58:59,388 INFO L93 Difference]: Finished difference Result 1164 states and 2387 transitions. [2021-06-16 14:58:59,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-16 14:58:59,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 14:58:59,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 14:58:59,388 INFO L225 Difference]: With dead ends: 1164 [2021-06-16 14:58:59,388 INFO L226 Difference]: Without dead ends: 0 [2021-06-16 14:58:59,388 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-16 14:58:59,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-16 14:58:59,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-16 14:58:59,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:59,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-16 14:58:59,389 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2021-06-16 14:58:59,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 14:58:59,389 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-16 14:58:59,389 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:58:59,389 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-16 14:58:59,389 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-16 14:58:59,389 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-16 14:58:59,389 INFO L301 ceAbstractionStarter]: Result for error location thr2Thread1of1ForFork1 was SAFE (5/5) [2021-06-16 14:58:59,389 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-16 14:58:59,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.06 02:58:59 BasicIcfg [2021-06-16 14:58:59,391 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-16 14:58:59,392 INFO L168 Benchmark]: Toolchain (without parser) took 3753.75 ms. Allocated memory was 185.6 MB in the beginning and 289.4 MB in the end (delta: 103.8 MB). Free memory was 147.2 MB in the beginning and 192.9 MB in the end (delta: -45.8 MB). Peak memory consumption was 58.9 MB. Max. memory is 8.0 GB. [2021-06-16 14:58:59,392 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 185.6 MB. Free memory is still 165.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-16 14:58:59,393 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.44 ms. Allocated memory is still 185.6 MB. Free memory was 146.8 MB in the beginning and 148.6 MB in the end (delta: -1.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-06-16 14:58:59,393 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.50 ms. Allocated memory is still 185.6 MB. Free memory was 148.6 MB in the beginning and 146.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-16 14:58:59,393 INFO L168 Benchmark]: Boogie Preprocessor took 16.91 ms. Allocated memory is still 185.6 MB. Free memory was 146.5 MB in the beginning and 144.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-16 14:58:59,393 INFO L168 Benchmark]: RCFGBuilder took 324.80 ms. Allocated memory is still 185.6 MB. Free memory was 144.9 MB in the beginning and 118.2 MB in the end (delta: 26.7 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. [2021-06-16 14:58:59,393 INFO L168 Benchmark]: TraceAbstraction took 3026.30 ms. Allocated memory was 185.6 MB in the beginning and 289.4 MB in the end (delta: 103.8 MB). Free memory was 117.6 MB in the beginning and 192.9 MB in the end (delta: -75.3 MB). Peak memory consumption was 29.5 MB. Max. memory is 8.0 GB. [2021-06-16 14:58:59,394 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 185.6 MB. Free memory is still 165.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 358.44 ms. Allocated memory is still 185.6 MB. Free memory was 146.8 MB in the beginning and 148.6 MB in the end (delta: -1.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 22.50 ms. Allocated memory is still 185.6 MB. Free memory was 148.6 MB in the beginning and 146.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 16.91 ms. Allocated memory is still 185.6 MB. Free memory was 146.5 MB in the beginning and 144.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 324.80 ms. Allocated memory is still 185.6 MB. Free memory was 144.9 MB in the beginning and 118.2 MB in the end (delta: 26.7 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3026.30 ms. Allocated memory was 185.6 MB in the beginning and 289.4 MB in the end (delta: 103.8 MB). Free memory was 117.6 MB in the beginning and 192.9 MB in the end (delta: -75.3 MB). Peak memory consumption was 29.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 14474, positive: 10891, positive conditional: 10891, positive unconditional: 0, negative: 3583, negative conditional: 3583, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 11264, positive: 10891, positive conditional: 0, positive unconditional: 10891, negative: 373, negative conditional: 0, negative unconditional: 373, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2051, positive: 1957, positive conditional: 0, positive unconditional: 1957, negative: 94, negative conditional: 0, negative unconditional: 94, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2051, positive: 1955, positive conditional: 0, positive unconditional: 1955, negative: 96, negative conditional: 0, negative unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 96, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 94, negative conditional: 0, negative unconditional: 94, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 142, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 141, negative conditional: 0, negative unconditional: 141, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 11264, positive: 8934, positive conditional: 0, positive unconditional: 8934, negative: 279, negative conditional: 0, negative unconditional: 279, unknown: 2051, unknown conditional: 0, unknown unconditional: 2051] , Statistics on independence cache: Total cache size (in pairs): 2051, Positive cache size: 1957, Positive conditional cache size: 0, Positive unconditional cache size: 1957, Negative cache size: 94, Negative conditional cache size: 0, Negative unconditional cache size: 94, Independence queries for same thread: 3210 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 14474, positive: 10891, positive conditional: 10891, positive unconditional: 0, negative: 3583, negative conditional: 3583, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 11264, positive: 10891, positive conditional: 0, positive unconditional: 10891, negative: 373, negative conditional: 0, negative unconditional: 373, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2051, positive: 1957, positive conditional: 0, positive unconditional: 1957, negative: 94, negative conditional: 0, negative unconditional: 94, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2051, positive: 1955, positive conditional: 0, positive unconditional: 1955, negative: 96, negative conditional: 0, negative unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 96, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 94, negative conditional: 0, negative unconditional: 94, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 53, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 11264, positive: 8934, positive conditional: 0, positive unconditional: 8934, negative: 279, negative conditional: 0, negative unconditional: 279, unknown: 2051, unknown conditional: 0, unknown unconditional: 2051] , Statistics on independence cache: Total cache size (in pairs): 2051, Positive cache size: 1957, Positive conditional cache size: 0, Positive unconditional cache size: 1957, Negative cache size: 94, Negative conditional cache size: 0, Negative unconditional cache size: 94, Independence queries for same thread: 3210 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 14474, positive: 10891, positive conditional: 10891, positive unconditional: 0, negative: 3583, negative conditional: 3583, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 11264, positive: 10891, positive conditional: 0, positive unconditional: 10891, negative: 373, negative conditional: 0, negative unconditional: 373, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2051, positive: 1957, positive conditional: 0, positive unconditional: 1957, negative: 94, negative conditional: 0, negative unconditional: 94, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2051, positive: 1955, positive conditional: 0, positive unconditional: 1955, negative: 96, negative conditional: 0, negative unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 96, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 94, negative conditional: 0, negative unconditional: 94, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 87, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 86, negative conditional: 0, negative unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 11264, positive: 8934, positive conditional: 0, positive unconditional: 8934, negative: 279, negative conditional: 0, negative unconditional: 279, unknown: 2051, unknown conditional: 0, unknown unconditional: 2051] , Statistics on independence cache: Total cache size (in pairs): 2051, Positive cache size: 1957, Positive conditional cache size: 0, Positive unconditional cache size: 1957, Negative cache size: 94, Negative conditional cache size: 0, Negative unconditional cache size: 94, Independence queries for same thread: 3210 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 14474, positive: 10891, positive conditional: 10891, positive unconditional: 0, negative: 3583, negative conditional: 3583, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 11264, positive: 10891, positive conditional: 0, positive unconditional: 10891, negative: 373, negative conditional: 0, negative unconditional: 373, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2051, positive: 1957, positive conditional: 0, positive unconditional: 1957, negative: 94, negative conditional: 0, negative unconditional: 94, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2051, positive: 1955, positive conditional: 0, positive unconditional: 1955, negative: 96, negative conditional: 0, negative unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 96, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 94, negative conditional: 0, negative unconditional: 94, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 47, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 45, negative conditional: 0, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 11264, positive: 8934, positive conditional: 0, positive unconditional: 8934, negative: 279, negative conditional: 0, negative unconditional: 279, unknown: 2051, unknown conditional: 0, unknown unconditional: 2051] , Statistics on independence cache: Total cache size (in pairs): 2051, Positive cache size: 1957, Positive conditional cache size: 0, Positive unconditional cache size: 1957, Negative cache size: 94, Negative conditional cache size: 0, Negative unconditional cache size: 94, Independence queries for same thread: 3210 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 14474, positive: 10891, positive conditional: 10891, positive unconditional: 0, negative: 3583, negative conditional: 3583, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 11264, positive: 10891, positive conditional: 0, positive unconditional: 10891, negative: 373, negative conditional: 0, negative unconditional: 373, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2051, positive: 1957, positive conditional: 0, positive unconditional: 1957, negative: 94, negative conditional: 0, negative unconditional: 94, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2051, positive: 1955, positive conditional: 0, positive unconditional: 1955, negative: 96, negative conditional: 0, negative unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 96, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 94, negative conditional: 0, negative unconditional: 94, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 54, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 11264, positive: 8934, positive conditional: 0, positive unconditional: 8934, negative: 279, negative conditional: 0, negative unconditional: 279, unknown: 2051, unknown conditional: 0, unknown unconditional: 2051] , Statistics on independence cache: Total cache size (in pairs): 2051, Positive cache size: 1957, Positive conditional cache size: 0, Positive unconditional cache size: 1957, Negative cache size: 94, Negative conditional cache size: 0, Negative unconditional cache size: 94, Independence queries for same thread: 3210 - PositiveResult [Line: 802]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 745]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thr2 with 1 thread instances CFG has 5 procedures, 150 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 477.8ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 33.3ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 441.7ms, PartialOrderReductionTime: 429.9ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3267occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thr1 with 1 thread instances CFG has 5 procedures, 150 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 220.9ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 13.7ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 206.5ms, PartialOrderReductionTime: 205.1ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3267occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thr1Thread1of1ForFork0 with 1 thread instances CFG has 5 procedures, 150 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1297.7ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 18.2ms, AutomataDifference: 408.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 201.3ms, PartialOrderReductionTime: 195.5ms, HoareTripleCheckerStatistics: 635 SDtfs, 325 SDslu, 599 SDs, 0 SdLazy, 205 SolverSat, 70 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 145.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3267occurred in iteration=0, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 196.4ms AutomataMinimizationTime, 6 MinimizatonAttempts, 703 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.1ms SsaConstructionTime, 80.7ms SatisfiabilityAnalysisTime, 238.1ms InterpolantComputationTime, 254 NumberOfCodeBlocks, 254 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 248 ConstructedInterpolants, 0 QuantifiedInterpolants, 296 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 150 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 159.0ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 14.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 144.4ms, PartialOrderReductionTime: 142.2ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3267occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thr2Thread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 150 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 734.7ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 22.8ms, AutomataDifference: 266.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 142.7ms, PartialOrderReductionTime: 142.1ms, HoareTripleCheckerStatistics: 645 SDtfs, 301 SDslu, 590 SDs, 0 SdLazy, 211 SolverSat, 72 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 123.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3267occurred in iteration=0, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 119.6ms AutomataMinimizationTime, 6 MinimizatonAttempts, 572 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.3ms SsaConstructionTime, 33.4ms SatisfiabilityAnalysisTime, 103.3ms InterpolantComputationTime, 266 NumberOfCodeBlocks, 266 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 260 ConstructedInterpolants, 0 QuantifiedInterpolants, 308 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...