/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/lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-8a14012e553caa636f65c1137831746b6d9875cd-8a14012 [2021-08-06 18:45:32,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-06 18:45:32,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-06 18:45:32,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-06 18:45:32,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-06 18:45:32,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-06 18:45:32,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-06 18:45:32,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-06 18:45:32,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-06 18:45:32,230 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-06 18:45:32,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-06 18:45:32,232 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-06 18:45:32,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-06 18:45:32,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-06 18:45:32,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-06 18:45:32,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-06 18:45:32,239 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-06 18:45:32,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-06 18:45:32,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-06 18:45:32,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-06 18:45:32,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-06 18:45:32,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-06 18:45:32,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-06 18:45:32,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-06 18:45:32,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-06 18:45:32,257 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-06 18:45:32,257 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-06 18:45:32,258 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-06 18:45:32,259 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-06 18:45:32,261 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-06 18:45:32,261 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-06 18:45:32,262 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-06 18:45:32,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-06 18:45:32,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-06 18:45:32,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-06 18:45:32,264 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-06 18:45:32,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-06 18:45:32,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-06 18:45:32,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-06 18:45:32,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-06 18:45:32,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-06 18:45:32,269 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 [2021-08-06 18:45:32,292 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-06 18:45:32,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-06 18:45:32,293 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-06 18:45:32,293 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-06 18:45:32,294 INFO L138 SettingsManager]: * Use SBE=true [2021-08-06 18:45:32,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-06 18:45:32,294 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-06 18:45:32,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-06 18:45:32,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-06 18:45:32,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-06 18:45:32,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-06 18:45:32,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-06 18:45:32,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-06 18:45:32,295 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-06 18:45:32,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-06 18:45:32,295 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-06 18:45:32,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-06 18:45:32,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-06 18:45:32,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-06 18:45:32,295 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-06 18:45:32,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-06 18:45:32,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 18:45:32,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-06 18:45:32,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-06 18:45:32,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-06 18:45:32,296 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-06 18:45:32,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-06 18:45:32,296 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-06 18:45:32,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-06 18:45:32,297 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-08-06 18:45:32,297 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-06 18:45:32,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-06 18:45:32,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-06 18:45:32,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-06 18:45:32,569 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-06 18:45:32,569 INFO L275 PluginConnector]: CDTParser initialized [2021-08-06 18:45:32,570 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/lamport.i [2021-08-06 18:45:32,620 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5efb4720/f6b2507070c24684adb82d92bdf5c88a/FLAGfa806b7e9 [2021-08-06 18:45:33,459 INFO L306 CDTParser]: Found 1 translation units. [2021-08-06 18:45:33,460 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i [2021-08-06 18:45:33,468 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5efb4720/f6b2507070c24684adb82d92bdf5c88a/FLAGfa806b7e9 [2021-08-06 18:45:33,842 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5efb4720/f6b2507070c24684adb82d92bdf5c88a [2021-08-06 18:45:33,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-06 18:45:33,845 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-06 18:45:33,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-06 18:45:33,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-06 18:45:33,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-06 18:45:33,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.08 06:45:33" (1/1) ... [2021-08-06 18:45:33,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cf5773c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 06:45:33, skipping insertion in model container [2021-08-06 18:45:33,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.08 06:45:33" (1/1) ... [2021-08-06 18:45:33,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-06 18:45:33,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-06 18:45:34,027 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-08-06 18:45:34,138 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/lamport.i[32156,32169] [2021-08-06 18:45:34,144 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/lamport.i[34083,34096] [2021-08-06 18:45:34,148 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-06 18:45:34,157 INFO L203 MainTranslator]: Completed pre-run [2021-08-06 18:45:34,177 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-08-06 18:45:34,189 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/lamport.i[32156,32169] [2021-08-06 18:45:34,194 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/lamport.i[34083,34096] [2021-08-06 18:45:34,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-06 18:45:34,224 INFO L208 MainTranslator]: Completed translation [2021-08-06 18:45:34,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 06:45:34 WrapperNode [2021-08-06 18:45:34,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-06 18:45:34,225 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-06 18:45:34,226 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-06 18:45:34,226 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-06 18:45:34,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 06:45:34" (1/1) ... [2021-08-06 18:45:34,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 06:45:34" (1/1) ... [2021-08-06 18:45:34,266 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-06 18:45:34,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-06 18:45:34,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-06 18:45:34,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-06 18:45:34,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 06:45:34" (1/1) ... [2021-08-06 18:45:34,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 06:45:34" (1/1) ... [2021-08-06 18:45:34,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 06:45:34" (1/1) ... [2021-08-06 18:45:34,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 06:45:34" (1/1) ... [2021-08-06 18:45:34,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 06:45:34" (1/1) ... [2021-08-06 18:45:34,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 06:45:34" (1/1) ... [2021-08-06 18:45:34,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 06:45:34" (1/1) ... [2021-08-06 18:45:34,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-06 18:45:34,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-06 18:45:34,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-06 18:45:34,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-06 18:45:34,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 06:45:34" (1/1) ... [2021-08-06 18:45:34,314 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 18:45:34,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 18:45:34,334 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-06 18:45:34,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-06 18:45:34,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-06 18:45:34,373 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-08-06 18:45:34,373 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-08-06 18:45:34,373 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-08-06 18:45:34,373 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-08-06 18:45:34,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-06 18:45:34,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-06 18:45:34,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-06 18:45:34,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-06 18:45:34,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-06 18:45:34,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-06 18:45:34,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-06 18:45:34,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-06 18:45:34,375 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-06 18:45:34,713 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-06 18:45:34,714 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-08-06 18:45:34,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 06:45:34 BoogieIcfgContainer [2021-08-06 18:45:34,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-06 18:45:34,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-06 18:45:34,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-06 18:45:34,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-06 18:45:34,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.08 06:45:33" (1/3) ... [2021-08-06 18:45:34,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36cf9d55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 06:45:34, skipping insertion in model container [2021-08-06 18:45:34,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 06:45:34" (2/3) ... [2021-08-06 18:45:34,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36cf9d55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 06:45:34, skipping insertion in model container [2021-08-06 18:45:34,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 06:45:34" (3/3) ... [2021-08-06 18:45:34,720 INFO L111 eAbstractionObserver]: Analyzing ICFG lamport.i [2021-08-06 18:45:34,723 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-06 18:45:34,723 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-06 18:45:34,723 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-06 18:45:34,723 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-06 18:45:34,740 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,740 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,740 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,740 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,740 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,740 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,740 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,741 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,741 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,741 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,741 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,741 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,741 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,741 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,742 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,742 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,742 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,742 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,742 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,742 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,742 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,742 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,742 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,743 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,743 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,743 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,743 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,743 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,743 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,743 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,743 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,743 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,744 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,744 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,744 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,744 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,744 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,744 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,744 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,744 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,745 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,745 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,745 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,745 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,745 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,745 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,745 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,745 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,745 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,745 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,746 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,746 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,746 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,746 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,746 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,746 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,747 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,747 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,747 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,747 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,747 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,747 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,747 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,747 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,748 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,748 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,748 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,748 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,748 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,748 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,748 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,748 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,749 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,749 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,749 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,749 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,749 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,749 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,749 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,749 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,749 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,750 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,750 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,750 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,750 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,750 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,750 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,750 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,750 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,750 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,751 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,751 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,751 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,751 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,751 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,751 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,751 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,751 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,751 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,752 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,752 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,752 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,752 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,752 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,752 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,752 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,752 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,752 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,754 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,755 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,755 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,755 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,755 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,755 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,755 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,758 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,758 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,758 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,758 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,758 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,759 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,759 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 18:45:34,764 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-08-06 18:45:34,796 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of1ForFork1 ======== [2021-08-06 18:45:34,802 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-06 18:45:34,803 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-06 18:45:35,237 INFO L276 IsEmpty]: Start isEmpty. Operand has 3719 states, 3503 states have (on average 1.9426206109049386) internal successors, (6805), 3718 states have internal predecessors, (6805), 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) [2021-08-06 18:45:35,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-06 18:45:35,242 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:45:35,242 INFO L512 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] [2021-08-06 18:45:35,243 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 18:45:35,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:45:35,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1608657040, now seen corresponding path program 1 times [2021-08-06 18:45:35,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:45:35,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456796839] [2021-08-06 18:45:35,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:45:35,260 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:45:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:45:35,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 18:45:35,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 18:45:35,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456796839] [2021-08-06 18:45:35,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456796839] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 18:45:35,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 18:45:35,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-06 18:45:35,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321959297] [2021-08-06 18:45:35,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-06 18:45:35,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 18:45:35,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-06 18:45:35,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-06 18:45:35,440 INFO L87 Difference]: Start difference. First operand has 3719 states, 3503 states have (on average 1.9426206109049386) internal successors, (6805), 3718 states have internal predecessors, (6805), 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 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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) [2021-08-06 18:45:35,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 18:45:35,483 INFO L93 Difference]: Finished difference Result 3719 states and 5944 transitions. [2021-08-06 18:45:35,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-06 18:45:35,484 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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 25 [2021-08-06 18:45:35,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 18:45:35,506 INFO L225 Difference]: With dead ends: 3719 [2021-08-06 18:45:35,507 INFO L226 Difference]: Without dead ends: 2991 [2021-08-06 18:45:35,509 INFO L781 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 [2021-08-06 18:45:35,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2021-08-06 18:45:35,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 2991. [2021-08-06 18:45:35,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2991 states, 2983 states have (on average 1.732484076433121) internal successors, (5168), 2990 states have internal predecessors, (5168), 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) [2021-08-06 18:45:35,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2991 states to 2991 states and 5168 transitions. [2021-08-06 18:45:35,615 INFO L78 Accepts]: Start accepts. Automaton has 2991 states and 5168 transitions. Word has length 25 [2021-08-06 18:45:35,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 18:45:35,615 INFO L470 AbstractCegarLoop]: Abstraction has 2991 states and 5168 transitions. [2021-08-06 18:45:35,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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) [2021-08-06 18:45:35,616 INFO L276 IsEmpty]: Start isEmpty. Operand 2991 states and 5168 transitions. [2021-08-06 18:45:35,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-06 18:45:35,619 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:45:35,619 INFO L512 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] [2021-08-06 18:45:35,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-06 18:45:35,619 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 18:45:35,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:45:35,621 INFO L82 PathProgramCache]: Analyzing trace with hash 905942179, now seen corresponding path program 1 times [2021-08-06 18:45:35,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:45:35,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962528104] [2021-08-06 18:45:35,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:45:35,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:45:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:45:35,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 18:45:35,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 18:45:35,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962528104] [2021-08-06 18:45:35,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962528104] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 18:45:35,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 18:45:35,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-06 18:45:35,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059813873] [2021-08-06 18:45:35,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-06 18:45:35,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 18:45:35,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-06 18:45:35,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 18:45:35,690 INFO L87 Difference]: Start difference. First operand 2991 states and 5168 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2021-08-06 18:45:35,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 18:45:35,721 INFO L93 Difference]: Finished difference Result 2799 states and 4824 transitions. [2021-08-06 18:45:35,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-06 18:45:35,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 33 [2021-08-06 18:45:35,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 18:45:35,728 INFO L225 Difference]: With dead ends: 2799 [2021-08-06 18:45:35,728 INFO L226 Difference]: Without dead ends: 2347 [2021-08-06 18:45:35,729 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 18:45:35,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2347 states. [2021-08-06 18:45:35,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2347 to 2347. [2021-08-06 18:45:35,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2347 states, 2339 states have (on average 1.7374946558358273) internal successors, (4064), 2346 states have internal predecessors, (4064), 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) [2021-08-06 18:45:35,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2347 states to 2347 states and 4064 transitions. [2021-08-06 18:45:35,792 INFO L78 Accepts]: Start accepts. Automaton has 2347 states and 4064 transitions. Word has length 33 [2021-08-06 18:45:35,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 18:45:35,793 INFO L470 AbstractCegarLoop]: Abstraction has 2347 states and 4064 transitions. [2021-08-06 18:45:35,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2021-08-06 18:45:35,794 INFO L276 IsEmpty]: Start isEmpty. Operand 2347 states and 4064 transitions. [2021-08-06 18:45:35,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-06 18:45:35,804 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:45:35,804 INFO L512 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, 1, 1] [2021-08-06 18:45:35,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-06 18:45:35,804 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 18:45:35,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:45:35,807 INFO L82 PathProgramCache]: Analyzing trace with hash -521410779, now seen corresponding path program 1 times [2021-08-06 18:45:35,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:45:35,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118674904] [2021-08-06 18:45:35,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:45:35,809 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:45:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:45:35,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 18:45:35,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 18:45:35,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118674904] [2021-08-06 18:45:35,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118674904] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 18:45:35,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 18:45:35,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-06 18:45:35,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778216623] [2021-08-06 18:45:35,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-06 18:45:35,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 18:45:35,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-06 18:45:35,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-06 18:45:35,871 INFO L87 Difference]: Start difference. First operand 2347 states and 4064 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-08-06 18:45:35,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 18:45:35,941 INFO L93 Difference]: Finished difference Result 7277 states and 12938 transitions. [2021-08-06 18:45:35,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-06 18:45:35,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 50 [2021-08-06 18:45:35,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 18:45:35,964 INFO L225 Difference]: With dead ends: 7277 [2021-08-06 18:45:35,965 INFO L226 Difference]: Without dead ends: 7277 [2021-08-06 18:45:35,965 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-06 18:45:35,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7277 states. [2021-08-06 18:45:36,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7277 to 2767. [2021-08-06 18:45:36,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2767 states, 2759 states have (on average 1.7499093874592244) internal successors, (4828), 2766 states have internal predecessors, (4828), 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) [2021-08-06 18:45:36,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2767 states to 2767 states and 4828 transitions. [2021-08-06 18:45:36,035 INFO L78 Accepts]: Start accepts. Automaton has 2767 states and 4828 transitions. Word has length 50 [2021-08-06 18:45:36,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 18:45:36,036 INFO L470 AbstractCegarLoop]: Abstraction has 2767 states and 4828 transitions. [2021-08-06 18:45:36,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-08-06 18:45:36,037 INFO L276 IsEmpty]: Start isEmpty. Operand 2767 states and 4828 transitions. [2021-08-06 18:45:36,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-06 18:45:36,041 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:45:36,041 INFO L512 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, 1, 1] [2021-08-06 18:45:36,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-06 18:45:36,042 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 18:45:36,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:45:36,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1197023379, now seen corresponding path program 2 times [2021-08-06 18:45:36,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:45:36,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523592126] [2021-08-06 18:45:36,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:45:36,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:45:36,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:45:36,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 18:45:36,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 18:45:36,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523592126] [2021-08-06 18:45:36,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523592126] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 18:45:36,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 18:45:36,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-06 18:45:36,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060371588] [2021-08-06 18:45:36,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-06 18:45:36,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 18:45:36,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-06 18:45:36,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-06 18:45:36,109 INFO L87 Difference]: Start difference. First operand 2767 states and 4828 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-08-06 18:45:36,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 18:45:36,224 INFO L93 Difference]: Finished difference Result 5987 states and 10466 transitions. [2021-08-06 18:45:36,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-06 18:45:36,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 50 [2021-08-06 18:45:36,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 18:45:36,235 INFO L225 Difference]: With dead ends: 5987 [2021-08-06 18:45:36,235 INFO L226 Difference]: Without dead ends: 3093 [2021-08-06 18:45:36,235 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-06 18:45:36,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3093 states. [2021-08-06 18:45:36,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3093 to 2841. [2021-08-06 18:45:36,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2841 states, 2833 states have (on average 1.7585598305683021) internal successors, (4982), 2840 states have internal predecessors, (4982), 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) [2021-08-06 18:45:36,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2841 states to 2841 states and 4982 transitions. [2021-08-06 18:45:36,318 INFO L78 Accepts]: Start accepts. Automaton has 2841 states and 4982 transitions. Word has length 50 [2021-08-06 18:45:36,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 18:45:36,320 INFO L470 AbstractCegarLoop]: Abstraction has 2841 states and 4982 transitions. [2021-08-06 18:45:36,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-08-06 18:45:36,320 INFO L276 IsEmpty]: Start isEmpty. Operand 2841 states and 4982 transitions. [2021-08-06 18:45:36,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-06 18:45:36,323 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:45:36,323 INFO L512 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, 1, 1] [2021-08-06 18:45:36,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-06 18:45:36,323 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 18:45:36,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:45:36,324 INFO L82 PathProgramCache]: Analyzing trace with hash -283257887, now seen corresponding path program 3 times [2021-08-06 18:45:36,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:45:36,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372697358] [2021-08-06 18:45:36,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:45:36,325 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:45:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:45:36,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 18:45:36,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 18:45:36,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372697358] [2021-08-06 18:45:36,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372697358] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 18:45:36,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 18:45:36,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-06 18:45:36,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257282078] [2021-08-06 18:45:36,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-06 18:45:36,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 18:45:36,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-06 18:45:36,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-06 18:45:36,383 INFO L87 Difference]: Start difference. First operand 2841 states and 4982 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-08-06 18:45:36,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 18:45:36,456 INFO L93 Difference]: Finished difference Result 4145 states and 7186 transitions. [2021-08-06 18:45:36,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-06 18:45:36,457 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 50 [2021-08-06 18:45:36,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 18:45:36,462 INFO L225 Difference]: With dead ends: 4145 [2021-08-06 18:45:36,462 INFO L226 Difference]: Without dead ends: 1713 [2021-08-06 18:45:36,463 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-06 18:45:36,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2021-08-06 18:45:36,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1617. [2021-08-06 18:45:36,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1609 states have (on average 1.5848353014294594) internal successors, (2550), 1616 states have internal predecessors, (2550), 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) [2021-08-06 18:45:36,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2550 transitions. [2021-08-06 18:45:36,490 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2550 transitions. Word has length 50 [2021-08-06 18:45:36,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 18:45:36,490 INFO L470 AbstractCegarLoop]: Abstraction has 1617 states and 2550 transitions. [2021-08-06 18:45:36,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-08-06 18:45:36,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2550 transitions. [2021-08-06 18:45:36,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-06 18:45:36,493 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:45:36,493 INFO L512 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, 1, 1] [2021-08-06 18:45:36,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-06 18:45:36,493 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 18:45:36,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:45:36,493 INFO L82 PathProgramCache]: Analyzing trace with hash -439107803, now seen corresponding path program 4 times [2021-08-06 18:45:36,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:45:36,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067772116] [2021-08-06 18:45:36,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:45:36,496 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:45:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:45:36,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 18:45:36,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 18:45:36,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067772116] [2021-08-06 18:45:36,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067772116] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 18:45:36,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 18:45:36,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-06 18:45:36,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645637617] [2021-08-06 18:45:36,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-06 18:45:36,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 18:45:36,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-06 18:45:36,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-06 18:45:36,560 INFO L87 Difference]: Start difference. First operand 1617 states and 2550 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-08-06 18:45:36,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 18:45:36,592 INFO L93 Difference]: Finished difference Result 3465 states and 5386 transitions. [2021-08-06 18:45:36,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-06 18:45:36,592 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 50 [2021-08-06 18:45:36,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 18:45:36,601 INFO L225 Difference]: With dead ends: 3465 [2021-08-06 18:45:36,601 INFO L226 Difference]: Without dead ends: 3189 [2021-08-06 18:45:36,602 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-06 18:45:36,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3189 states. [2021-08-06 18:45:36,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3189 to 1661. [2021-08-06 18:45:36,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1653 states have (on average 1.557168784029038) internal successors, (2574), 1660 states have internal predecessors, (2574), 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) [2021-08-06 18:45:36,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 2574 transitions. [2021-08-06 18:45:36,632 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 2574 transitions. Word has length 50 [2021-08-06 18:45:36,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 18:45:36,632 INFO L470 AbstractCegarLoop]: Abstraction has 1661 states and 2574 transitions. [2021-08-06 18:45:36,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-08-06 18:45:36,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 2574 transitions. [2021-08-06 18:45:36,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-06 18:45:36,634 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:45:36,634 INFO L512 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 18:45:36,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-06 18:45:36,634 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 18:45:36,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:45:36,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1615351925, now seen corresponding path program 1 times [2021-08-06 18:45:36,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:45:36,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408533212] [2021-08-06 18:45:36,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:45:36,636 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:45:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:45:36,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 18:45:36,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 18:45:36,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408533212] [2021-08-06 18:45:36,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408533212] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 18:45:36,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 18:45:36,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-06 18:45:36,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617359650] [2021-08-06 18:45:36,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-06 18:45:36,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 18:45:36,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-06 18:45:36,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-06 18:45:36,690 INFO L87 Difference]: Start difference. First operand 1661 states and 2574 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2021-08-06 18:45:36,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 18:45:36,710 INFO L93 Difference]: Finished difference Result 1421 states and 2166 transitions. [2021-08-06 18:45:36,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-06 18:45:36,711 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 55 [2021-08-06 18:45:36,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 18:45:36,715 INFO L225 Difference]: With dead ends: 1421 [2021-08-06 18:45:36,715 INFO L226 Difference]: Without dead ends: 1333 [2021-08-06 18:45:36,716 INFO L781 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 [2021-08-06 18:45:36,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2021-08-06 18:45:36,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1285. [2021-08-06 18:45:36,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1285 states, 1277 states have (on average 1.5458104933437744) internal successors, (1974), 1284 states have internal predecessors, (1974), 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) [2021-08-06 18:45:36,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 1974 transitions. [2021-08-06 18:45:36,743 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 1974 transitions. Word has length 55 [2021-08-06 18:45:36,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 18:45:36,744 INFO L470 AbstractCegarLoop]: Abstraction has 1285 states and 1974 transitions. [2021-08-06 18:45:36,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2021-08-06 18:45:36,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 1974 transitions. [2021-08-06 18:45:36,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-06 18:45:36,746 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:45:36,746 INFO L512 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 18:45:36,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-06 18:45:36,746 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 18:45:36,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:45:36,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1975927806, now seen corresponding path program 1 times [2021-08-06 18:45:36,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:45:36,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910877978] [2021-08-06 18:45:36,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:45:36,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:45:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:45:36,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 18:45:36,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 18:45:36,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910877978] [2021-08-06 18:45:36,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910877978] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 18:45:36,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 18:45:36,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-06 18:45:36,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724770918] [2021-08-06 18:45:36,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-06 18:45:36,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 18:45:36,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-06 18:45:36,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-06 18:45:36,801 INFO L87 Difference]: Start difference. First operand 1285 states and 1974 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2021-08-06 18:45:36,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 18:45:36,813 INFO L93 Difference]: Finished difference Result 786 states and 1223 transitions. [2021-08-06 18:45:36,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-06 18:45:36,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 55 [2021-08-06 18:45:36,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 18:45:36,814 INFO L225 Difference]: With dead ends: 786 [2021-08-06 18:45:36,814 INFO L226 Difference]: Without dead ends: 0 [2021-08-06 18:45:36,814 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-06 18:45:36,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-06 18:45:36,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-06 18:45:36,814 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) [2021-08-06 18:45:36,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-06 18:45:36,815 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2021-08-06 18:45:36,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 18:45:36,815 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-06 18:45:36,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2021-08-06 18:45:36,815 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-06 18:45:36,815 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-06 18:45:36,829 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-06 18:45:36,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-06 18:45:36,831 INFO L308 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork1 was SAFE (1/3) [2021-08-06 18:45:36,833 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-08-06 18:45:36,833 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-06 18:45:36,833 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-06 18:45:36,843 INFO L276 IsEmpty]: Start isEmpty. Operand has 212 states, 200 states have (on average 1.415) internal successors, (283), 211 states have internal predecessors, (283), 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) [2021-08-06 18:45:36,843 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-06 18:45:36,843 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-06 18:45:36,844 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-06 18:45:36,844 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE,SAFE (2/3) [2021-08-06 18:45:36,844 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr2Thread1of1ForFork0 ======== [2021-08-06 18:45:36,845 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-06 18:45:36,845 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-06 18:45:37,128 INFO L276 IsEmpty]: Start isEmpty. Operand has 3749 states, 3575 states have (on average 2.456783216783217) internal successors, (8783), 3748 states have internal predecessors, (8783), 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) [2021-08-06 18:45:37,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-06 18:45:37,129 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:45:37,129 INFO L512 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] [2021-08-06 18:45:37,129 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 18:45:37,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:45:37,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1350707285, now seen corresponding path program 1 times [2021-08-06 18:45:37,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:45:37,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516280277] [2021-08-06 18:45:37,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:45:37,135 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:45:37,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:45:37,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 18:45:37,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 18:45:37,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516280277] [2021-08-06 18:45:37,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516280277] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 18:45:37,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 18:45:37,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-06 18:45:37,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878735367] [2021-08-06 18:45:37,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-06 18:45:37,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 18:45:37,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-06 18:45:37,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-06 18:45:37,172 INFO L87 Difference]: Start difference. First operand has 3749 states, 3575 states have (on average 2.456783216783217) internal successors, (8783), 3748 states have internal predecessors, (8783), 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) [2021-08-06 18:45:37,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 18:45:37,196 INFO L93 Difference]: Finished difference Result 3749 states and 7931 transitions. [2021-08-06 18:45:37,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-06 18:45:37,197 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 [2021-08-06 18:45:37,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 18:45:37,217 INFO L225 Difference]: With dead ends: 3749 [2021-08-06 18:45:37,217 INFO L226 Difference]: Without dead ends: 2892 [2021-08-06 18:45:37,217 INFO L781 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 [2021-08-06 18:45:37,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2021-08-06 18:45:37,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 2892. [2021-08-06 18:45:37,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2888 states have (on average 2.339335180055402) internal successors, (6756), 2891 states have internal predecessors, (6756), 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) [2021-08-06 18:45:37,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 6756 transitions. [2021-08-06 18:45:37,288 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 6756 transitions. Word has length 31 [2021-08-06 18:45:37,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 18:45:37,288 INFO L470 AbstractCegarLoop]: Abstraction has 2892 states and 6756 transitions. [2021-08-06 18:45:37,289 INFO L471 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) [2021-08-06 18:45:37,289 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 6756 transitions. [2021-08-06 18:45:37,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-06 18:45:37,289 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:45:37,290 INFO L512 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] [2021-08-06 18:45:37,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-06 18:45:37,290 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 18:45:37,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:45:37,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1527108856, now seen corresponding path program 1 times [2021-08-06 18:45:37,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:45:37,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221130463] [2021-08-06 18:45:37,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:45:37,291 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:45:37,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:45:37,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 18:45:37,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 18:45:37,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221130463] [2021-08-06 18:45:37,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221130463] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 18:45:37,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 18:45:37,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-06 18:45:37,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051326032] [2021-08-06 18:45:37,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-06 18:45:37,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 18:45:37,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-06 18:45:37,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 18:45:37,317 INFO L87 Difference]: Start difference. First operand 2892 states and 6756 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2021-08-06 18:45:37,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 18:45:37,336 INFO L93 Difference]: Finished difference Result 2726 states and 6364 transitions. [2021-08-06 18:45:37,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-06 18:45:37,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2021-08-06 18:45:37,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 18:45:37,341 INFO L225 Difference]: With dead ends: 2726 [2021-08-06 18:45:37,342 INFO L226 Difference]: Without dead ends: 2126 [2021-08-06 18:45:37,342 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 18:45:37,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2021-08-06 18:45:37,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 2126. [2021-08-06 18:45:37,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2126 states, 2124 states have (on average 2.3300376647834273) internal successors, (4949), 2125 states have internal predecessors, (4949), 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) [2021-08-06 18:45:37,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2126 states to 2126 states and 4949 transitions. [2021-08-06 18:45:37,418 INFO L78 Accepts]: Start accepts. Automaton has 2126 states and 4949 transitions. Word has length 39 [2021-08-06 18:45:37,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 18:45:37,419 INFO L470 AbstractCegarLoop]: Abstraction has 2126 states and 4949 transitions. [2021-08-06 18:45:37,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2021-08-06 18:45:37,419 INFO L276 IsEmpty]: Start isEmpty. Operand 2126 states and 4949 transitions. [2021-08-06 18:45:37,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-06 18:45:37,423 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:45:37,423 INFO L512 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, 1, 1] [2021-08-06 18:45:37,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-06 18:45:37,423 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 18:45:37,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:45:37,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1022277631, now seen corresponding path program 1 times [2021-08-06 18:45:37,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:45:37,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48288694] [2021-08-06 18:45:37,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:45:37,424 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:45:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:45:37,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 18:45:37,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 18:45:37,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48288694] [2021-08-06 18:45:37,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48288694] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 18:45:37,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 18:45:37,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-06 18:45:37,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889229385] [2021-08-06 18:45:37,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-06 18:45:37,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 18:45:37,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-06 18:45:37,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-06 18:45:37,460 INFO L87 Difference]: Start difference. First operand 2126 states and 4949 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-08-06 18:45:37,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 18:45:37,520 INFO L93 Difference]: Finished difference Result 7204 states and 16999 transitions. [2021-08-06 18:45:37,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-06 18:45:37,521 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 50 [2021-08-06 18:45:37,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 18:45:37,538 INFO L225 Difference]: With dead ends: 7204 [2021-08-06 18:45:37,538 INFO L226 Difference]: Without dead ends: 7204 [2021-08-06 18:45:37,539 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-06 18:45:37,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7204 states. [2021-08-06 18:45:37,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7204 to 2586. [2021-08-06 18:45:37,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2586 states, 2584 states have (on average 2.3490712074303404) internal successors, (6070), 2585 states have internal predecessors, (6070), 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) [2021-08-06 18:45:37,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2586 states to 2586 states and 6070 transitions. [2021-08-06 18:45:37,620 INFO L78 Accepts]: Start accepts. Automaton has 2586 states and 6070 transitions. Word has length 50 [2021-08-06 18:45:37,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 18:45:37,620 INFO L470 AbstractCegarLoop]: Abstraction has 2586 states and 6070 transitions. [2021-08-06 18:45:37,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-08-06 18:45:37,620 INFO L276 IsEmpty]: Start isEmpty. Operand 2586 states and 6070 transitions. [2021-08-06 18:45:37,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-06 18:45:37,624 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:45:37,624 INFO L512 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, 1, 1] [2021-08-06 18:45:37,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-06 18:45:37,625 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 18:45:37,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:45:37,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1709140209, now seen corresponding path program 2 times [2021-08-06 18:45:37,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:45:37,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117549115] [2021-08-06 18:45:37,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:45:37,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:45:37,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:45:37,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 18:45:37,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 18:45:37,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117549115] [2021-08-06 18:45:37,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117549115] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 18:45:37,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 18:45:37,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-06 18:45:37,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839143439] [2021-08-06 18:45:37,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-06 18:45:37,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 18:45:37,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-06 18:45:37,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-06 18:45:37,657 INFO L87 Difference]: Start difference. First operand 2586 states and 6070 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-08-06 18:45:37,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 18:45:37,733 INFO L93 Difference]: Finished difference Result 5675 states and 13240 transitions. [2021-08-06 18:45:37,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-06 18:45:37,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 50 [2021-08-06 18:45:37,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 18:45:37,739 INFO L225 Difference]: With dead ends: 5675 [2021-08-06 18:45:37,739 INFO L226 Difference]: Without dead ends: 3116 [2021-08-06 18:45:37,740 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-06 18:45:37,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3116 states. [2021-08-06 18:45:37,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3116 to 2700. [2021-08-06 18:45:37,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2700 states, 2698 states have (on average 2.3106004447739066) internal successors, (6234), 2699 states have internal predecessors, (6234), 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) [2021-08-06 18:45:37,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2700 states to 2700 states and 6234 transitions. [2021-08-06 18:45:37,786 INFO L78 Accepts]: Start accepts. Automaton has 2700 states and 6234 transitions. Word has length 50 [2021-08-06 18:45:37,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 18:45:37,786 INFO L470 AbstractCegarLoop]: Abstraction has 2700 states and 6234 transitions. [2021-08-06 18:45:37,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-08-06 18:45:37,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2700 states and 6234 transitions. [2021-08-06 18:45:37,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-06 18:45:37,789 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:45:37,789 INFO L512 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, 1, 1] [2021-08-06 18:45:37,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-06 18:45:37,789 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 18:45:37,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:45:37,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1863058105, now seen corresponding path program 3 times [2021-08-06 18:45:37,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:45:37,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998633710] [2021-08-06 18:45:37,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:45:37,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:45:37,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:45:37,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 18:45:37,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 18:45:37,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998633710] [2021-08-06 18:45:37,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998633710] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 18:45:37,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 18:45:37,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-06 18:45:37,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258778289] [2021-08-06 18:45:37,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-06 18:45:37,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 18:45:37,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-06 18:45:37,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-06 18:45:37,837 INFO L87 Difference]: Start difference. First operand 2700 states and 6234 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-08-06 18:45:37,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 18:45:37,910 INFO L93 Difference]: Finished difference Result 4251 states and 9690 transitions. [2021-08-06 18:45:37,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-06 18:45:37,910 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 50 [2021-08-06 18:45:37,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 18:45:37,913 INFO L225 Difference]: With dead ends: 4251 [2021-08-06 18:45:37,914 INFO L226 Difference]: Without dead ends: 1663 [2021-08-06 18:45:37,914 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-06 18:45:37,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2021-08-06 18:45:37,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1588. [2021-08-06 18:45:37,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1588 states, 1586 states have (on average 2.0258511979823455) internal successors, (3213), 1587 states have internal predecessors, (3213), 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) [2021-08-06 18:45:37,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 3213 transitions. [2021-08-06 18:45:37,936 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 3213 transitions. Word has length 50 [2021-08-06 18:45:37,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 18:45:37,936 INFO L470 AbstractCegarLoop]: Abstraction has 1588 states and 3213 transitions. [2021-08-06 18:45:37,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-08-06 18:45:37,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 3213 transitions. [2021-08-06 18:45:37,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-06 18:45:37,938 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:45:37,938 INFO L512 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, 1, 1] [2021-08-06 18:45:37,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-06 18:45:37,938 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 18:45:37,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:45:37,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1043286787, now seen corresponding path program 4 times [2021-08-06 18:45:37,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:45:37,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510959914] [2021-08-06 18:45:37,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:45:37,938 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:45:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:45:37,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 18:45:37,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 18:45:37,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510959914] [2021-08-06 18:45:37,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510959914] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 18:45:37,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 18:45:37,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-06 18:45:37,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78156558] [2021-08-06 18:45:37,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-06 18:45:37,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 18:45:37,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-06 18:45:37,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-06 18:45:37,974 INFO L87 Difference]: Start difference. First operand 1588 states and 3213 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-08-06 18:45:38,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 18:45:38,002 INFO L93 Difference]: Finished difference Result 3545 states and 7074 transitions. [2021-08-06 18:45:38,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-06 18:45:38,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 50 [2021-08-06 18:45:38,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 18:45:38,008 INFO L225 Difference]: With dead ends: 3545 [2021-08-06 18:45:38,008 INFO L226 Difference]: Without dead ends: 3290 [2021-08-06 18:45:38,008 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-06 18:45:38,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3290 states. [2021-08-06 18:45:38,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3290 to 1620. [2021-08-06 18:45:38,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1620 states, 1618 states have (on average 1.9944375772558713) internal successors, (3227), 1619 states have internal predecessors, (3227), 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) [2021-08-06 18:45:38,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 3227 transitions. [2021-08-06 18:45:38,035 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 3227 transitions. Word has length 50 [2021-08-06 18:45:38,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 18:45:38,035 INFO L470 AbstractCegarLoop]: Abstraction has 1620 states and 3227 transitions. [2021-08-06 18:45:38,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-08-06 18:45:38,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 3227 transitions. [2021-08-06 18:45:38,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-06 18:45:38,037 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:45:38,037 INFO L512 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 18:45:38,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-06 18:45:38,037 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 18:45:38,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:45:38,038 INFO L82 PathProgramCache]: Analyzing trace with hash -129432611, now seen corresponding path program 1 times [2021-08-06 18:45:38,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:45:38,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746018901] [2021-08-06 18:45:38,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:45:38,038 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:45:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:45:38,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 18:45:38,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 18:45:38,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746018901] [2021-08-06 18:45:38,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746018901] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 18:45:38,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 18:45:38,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-06 18:45:38,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662187056] [2021-08-06 18:45:38,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-06 18:45:38,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 18:45:38,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-06 18:45:38,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-06 18:45:38,072 INFO L87 Difference]: Start difference. First operand 1620 states and 3227 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2021-08-06 18:45:38,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 18:45:38,091 INFO L93 Difference]: Finished difference Result 1476 states and 2915 transitions. [2021-08-06 18:45:38,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-06 18:45:38,091 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 55 [2021-08-06 18:45:38,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 18:45:38,093 INFO L225 Difference]: With dead ends: 1476 [2021-08-06 18:45:38,093 INFO L226 Difference]: Without dead ends: 1272 [2021-08-06 18:45:38,094 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-06 18:45:38,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2021-08-06 18:45:38,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1184. [2021-08-06 18:45:38,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 1182 states have (on average 1.982233502538071) internal successors, (2343), 1183 states have internal predecessors, (2343), 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) [2021-08-06 18:45:38,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 2343 transitions. [2021-08-06 18:45:38,108 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 2343 transitions. Word has length 55 [2021-08-06 18:45:38,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 18:45:38,108 INFO L470 AbstractCegarLoop]: Abstraction has 1184 states and 2343 transitions. [2021-08-06 18:45:38,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2021-08-06 18:45:38,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 2343 transitions. [2021-08-06 18:45:38,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-06 18:45:38,110 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 18:45:38,110 INFO L512 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 18:45:38,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-06 18:45:38,110 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 18:45:38,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 18:45:38,111 INFO L82 PathProgramCache]: Analyzing trace with hash 927008080, now seen corresponding path program 1 times [2021-08-06 18:45:38,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 18:45:38,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748109211] [2021-08-06 18:45:38,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 18:45:38,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 18:45:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 18:45:38,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 18:45:38,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 18:45:38,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748109211] [2021-08-06 18:45:38,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748109211] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 18:45:38,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 18:45:38,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-06 18:45:38,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146920435] [2021-08-06 18:45:38,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-06 18:45:38,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 18:45:38,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-06 18:45:38,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-06 18:45:38,144 INFO L87 Difference]: Start difference. First operand 1184 states and 2343 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2021-08-06 18:45:38,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 18:45:38,155 INFO L93 Difference]: Finished difference Result 592 states and 1171 transitions. [2021-08-06 18:45:38,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-06 18:45:38,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 55 [2021-08-06 18:45:38,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 18:45:38,156 INFO L225 Difference]: With dead ends: 592 [2021-08-06 18:45:38,156 INFO L226 Difference]: Without dead ends: 0 [2021-08-06 18:45:38,156 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-06 18:45:38,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-06 18:45:38,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-06 18:45:38,156 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) [2021-08-06 18:45:38,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-06 18:45:38,156 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2021-08-06 18:45:38,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 18:45:38,157 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-06 18:45:38,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2021-08-06 18:45:38,157 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-06 18:45:38,157 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-06 18:45:38,157 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-06 18:45:38,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-06 18:45:38,157 INFO L308 ceAbstractionStarter]: Result for error location thr2Thread1of1ForFork0 was SAFE (3/3) [2021-08-06 18:45:38,158 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-06 18:45:38,158 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-06 18:45:38,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.08 06:45:38 BasicIcfg [2021-08-06 18:45:38,159 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-06 18:45:38,160 INFO L168 Benchmark]: Toolchain (without parser) took 4314.88 ms. Allocated memory was 208.7 MB in the beginning and 363.9 MB in the end (delta: 155.2 MB). Free memory was 171.2 MB in the beginning and 192.7 MB in the end (delta: -21.5 MB). Peak memory consumption was 133.9 MB. Max. memory is 8.0 GB. [2021-08-06 18:45:38,160 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 208.7 MB. Free memory is still 189.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-06 18:45:38,160 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.90 ms. Allocated memory is still 208.7 MB. Free memory was 171.1 MB in the beginning and 182.5 MB in the end (delta: -11.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-08-06 18:45:38,163 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.55 ms. Allocated memory is still 208.7 MB. Free memory was 182.5 MB in the beginning and 180.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-06 18:45:38,163 INFO L168 Benchmark]: Boogie Preprocessor took 34.07 ms. Allocated memory is still 208.7 MB. Free memory was 180.8 MB in the beginning and 179.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-06 18:45:38,163 INFO L168 Benchmark]: RCFGBuilder took 413.99 ms. Allocated memory is still 208.7 MB. Free memory was 179.2 MB in the beginning and 188.6 MB in the end (delta: -9.4 MB). Peak memory consumption was 30.9 MB. Max. memory is 8.0 GB. [2021-08-06 18:45:38,163 INFO L168 Benchmark]: TraceAbstraction took 3442.92 ms. Allocated memory was 208.7 MB in the beginning and 363.9 MB in the end (delta: 155.2 MB). Free memory was 188.1 MB in the beginning and 192.7 MB in the end (delta: -4.6 MB). Peak memory consumption was 150.6 MB. Max. memory is 8.0 GB. [2021-08-06 18:45:38,164 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 208.7 MB. Free memory is still 189.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 377.90 ms. Allocated memory is still 208.7 MB. Free memory was 171.1 MB in the beginning and 182.5 MB in the end (delta: -11.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 40.55 ms. Allocated memory is still 208.7 MB. Free memory was 182.5 MB in the beginning and 180.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.07 ms. Allocated memory is still 208.7 MB. Free memory was 180.8 MB in the beginning and 179.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 413.99 ms. Allocated memory is still 208.7 MB. Free memory was 179.2 MB in the beginning and 188.6 MB in the end (delta: -9.4 MB). Peak memory consumption was 30.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3442.92 ms. Allocated memory was 208.7 MB in the beginning and 363.9 MB in the end (delta: 155.2 MB). Free memory was 188.1 MB in the beginning and 192.7 MB in the end (delta: -4.6 MB). Peak memory consumption was 150.6 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: 14044, positive: 11466, positive conditional: 11466, positive unconditional: 0, negative: 2578, negative conditional: 2578, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 11626, positive: 11466, positive conditional: 0, positive unconditional: 11466, negative: 160, negative conditional: 0, negative unconditional: 160, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2266, positive: 2226, positive conditional: 0, positive unconditional: 2226, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2266, positive: 2225, positive conditional: 0, positive unconditional: 2225, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 41, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 58, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 57, negative conditional: 0, negative unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 11626, positive: 9240, positive conditional: 0, positive unconditional: 9240, negative: 120, negative conditional: 0, negative unconditional: 120, unknown: 2266, unknown conditional: 0, unknown unconditional: 2266] , Statistics on independence cache: Total cache size (in pairs): 2266, Positive cache size: 2226, Positive conditional cache size: 0, Positive unconditional cache size: 2226, Negative cache size: 40, Negative conditional cache size: 0, Negative unconditional cache size: 40, Independence queries for same thread: 2418 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 311, positive: 215, positive conditional: 215, positive unconditional: 0, negative: 96, negative conditional: 96, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 215, positive: 215, positive conditional: 0, positive unconditional: 215, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 215, positive: 215, positive conditional: 0, positive unconditional: 215, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 215, positive: 215, positive conditional: 0, positive unconditional: 215, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 215, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 215, unknown conditional: 0, unknown unconditional: 215] , Statistics on independence cache: Total cache size (in pairs): 215, Positive cache size: 215, Positive conditional cache size: 0, Positive unconditional cache size: 215, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Independence queries for same thread: 96 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 15577, positive: 12866, positive conditional: 12866, positive unconditional: 0, negative: 2711, negative conditional: 2711, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 13026, positive: 12866, positive conditional: 0, positive unconditional: 12866, negative: 160, negative conditional: 0, negative unconditional: 160, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2688, positive: 2643, positive conditional: 0, positive unconditional: 2643, negative: 45, negative conditional: 0, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2688, positive: 2641, positive conditional: 0, positive unconditional: 2641, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 47, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 45, negative conditional: 0, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 47, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 13026, positive: 10223, positive conditional: 0, positive unconditional: 10223, negative: 115, negative conditional: 0, negative unconditional: 115, unknown: 2688, unknown conditional: 0, unknown unconditional: 2688] , Statistics on independence cache: Total cache size (in pairs): 2688, Positive cache size: 2643, Positive conditional cache size: 0, Positive unconditional cache size: 2643, Negative cache size: 45, Negative conditional cache size: 0, Negative unconditional cache size: 45, Independence queries for same thread: 2551 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 764]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 834]: 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: thr1Thread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 172 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 2036.7ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 40.4ms, AutomataDifference: 508.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 424.7ms, PartialOrderReductionTime: 401.7ms, HoareTripleCheckerStatistics: 1123 SDtfs, 646 SDslu, 1296 SDs, 0 SdLazy, 205 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 137.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3719occurred in iteration=0, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 396.1ms AutomataMinimizationTime, 8 MinimizatonAttempts, 6434 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 25.6ms SsaConstructionTime, 91.3ms SatisfiabilityAnalysisTime, 346.9ms InterpolantComputationTime, 368 NumberOfCodeBlocks, 368 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 360 ConstructedInterpolants, 0 QuantifiedInterpolants, 488 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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, 172 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 10.8ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.8ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.1ms, PartialOrderReductionTime: 7.8ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=212occurred 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: thr2Thread1of1ForFork0 with 1 thread instances CFG has 5 procedures, 172 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 1312.6ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 24.6ms, AutomataDifference: 386.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 276.5ms, PartialOrderReductionTime: 275.4ms, HoareTripleCheckerStatistics: 1176 SDtfs, 641 SDslu, 1352 SDs, 0 SdLazy, 207 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 112.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3749occurred in iteration=0, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 335.9ms AutomataMinimizationTime, 8 MinimizatonAttempts, 6867 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.8ms SsaConstructionTime, 27.3ms SatisfiabilityAnalysisTime, 199.9ms InterpolantComputationTime, 380 NumberOfCodeBlocks, 380 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 372 ConstructedInterpolants, 0 QuantifiedInterpolants, 486 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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! [2021-08-06 18:45:38,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...