/usr/bin/java -Xmx16000000000 -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.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98707888a4ba860d5b57d27ee0e051c5b948cbbf-9870788 [2021-06-01 15:00:24,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-01 15:00:24,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-01 15:00:24,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-01 15:00:24,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-01 15:00:24,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-01 15:00:24,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-01 15:00:24,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-01 15:00:24,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-01 15:00:24,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-01 15:00:24,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-01 15:00:24,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-01 15:00:24,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-01 15:00:24,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-01 15:00:24,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-01 15:00:24,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-01 15:00:24,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-01 15:00:24,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-01 15:00:24,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-01 15:00:24,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-01 15:00:24,280 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.epf [2021-06-01 15:00:24,307 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-01 15:00:24,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-01 15:00:24,308 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-01 15:00:24,308 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-01 15:00:24,310 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-01 15:00:24,310 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-01 15:00:24,310 INFO L138 SettingsManager]: * Use SBE=true [2021-06-01 15:00:24,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-01 15:00:24,310 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-01 15:00:24,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-01 15:00:24,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-01 15:00:24,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-01 15:00:24,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-01 15:00:24,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-01 15:00:24,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-01 15:00:24,311 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-01 15:00:24,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-01 15:00:24,311 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-01 15:00:24,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-01 15:00:24,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-01 15:00:24,312 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-01 15:00:24,312 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-01 15:00:24,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-01 15:00:24,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-01 15:00:24,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-01 15:00:24,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-01 15:00:24,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-01 15:00:24,312 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-01 15:00:24,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-01 15:00:24,312 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-01 15:00:24,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-01 15:00:24,313 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-01 15:00:24,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-01 15:00:24,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-01 15:00:24,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-01 15:00:24,560 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-01 15:00:24,561 INFO L275 PluginConnector]: CDTParser initialized [2021-06-01 15:00:24,561 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2021-06-01 15:00:24,597 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c931c257c/5feff69809024692ac54a5aedab079b2/FLAGba4219967 [2021-06-01 15:00:24,997 INFO L306 CDTParser]: Found 1 translation units. [2021-06-01 15:00:24,997 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2021-06-01 15:00:25,014 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c931c257c/5feff69809024692ac54a5aedab079b2/FLAGba4219967 [2021-06-01 15:00:25,322 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c931c257c/5feff69809024692ac54a5aedab079b2 [2021-06-01 15:00:25,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-01 15:00:25,326 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-01 15:00:25,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-01 15:00:25,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-01 15:00:25,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-01 15:00:25,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.06 03:00:25" (1/1) ... [2021-06-01 15:00:25,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@169305bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 03:00:25, skipping insertion in model container [2021-06-01 15:00:25,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.06 03:00:25" (1/1) ... [2021-06-01 15:00:25,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-01 15:00:25,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-01 15:00:25,517 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-06-01 15:00:25,643 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/read_write_lock-1.i[31246,31259] [2021-06-01 15:00:25,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-01 15:00:25,659 INFO L203 MainTranslator]: Completed pre-run [2021-06-01 15:00:25,679 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-06-01 15:00:25,693 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/read_write_lock-1.i[31246,31259] [2021-06-01 15:00:25,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-01 15:00:25,749 INFO L208 MainTranslator]: Completed translation [2021-06-01 15:00:25,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 03:00:25 WrapperNode [2021-06-01 15:00:25,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-01 15:00:25,750 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-01 15:00:25,750 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-01 15:00:25,750 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-01 15:00:25,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 03:00:25" (1/1) ... [2021-06-01 15:00:25,779 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 03:00:25" (1/1) ... [2021-06-01 15:00:25,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-01 15:00:25,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-01 15:00:25,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-01 15:00:25,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-01 15:00:25,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 03:00:25" (1/1) ... [2021-06-01 15:00:25,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 03:00:25" (1/1) ... [2021-06-01 15:00:25,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 03:00:25" (1/1) ... [2021-06-01 15:00:25,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 03:00:25" (1/1) ... [2021-06-01 15:00:25,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 03:00:25" (1/1) ... [2021-06-01 15:00:25,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 03:00:25" (1/1) ... [2021-06-01 15:00:25,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 03:00:25" (1/1) ... [2021-06-01 15:00:25,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-01 15:00:25,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-01 15:00:25,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-01 15:00:25,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-01 15:00:25,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 03:00:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-01 15:00:25,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-01 15:00:25,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-01 15:00:25,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-01 15:00:25,895 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2021-06-01 15:00:25,896 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2021-06-01 15:00:25,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-01 15:00:25,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-01 15:00:25,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-01 15:00:25,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-01 15:00:25,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-01 15:00:25,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-01 15:00:25,896 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2021-06-01 15:00:25,896 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2021-06-01 15:00:25,897 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-01 15:00:26,222 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-01 15:00:26,222 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-06-01 15:00:26,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.06 03:00:26 BoogieIcfgContainer [2021-06-01 15:00:26,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-01 15:00:26,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-01 15:00:26,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-01 15:00:26,227 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-01 15:00:26,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.06 03:00:25" (1/3) ... [2021-06-01 15:00:26,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32ccd625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.06 03:00:26, skipping insertion in model container [2021-06-01 15:00:26,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 03:00:25" (2/3) ... [2021-06-01 15:00:26,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32ccd625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.06 03:00:26, skipping insertion in model container [2021-06-01 15:00:26,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.06 03:00:26" (3/3) ... [2021-06-01 15:00:26,229 INFO L111 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2021-06-01 15:00:26,232 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-01 15:00:26,232 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-01 15:00:26,233 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-01 15:00:26,233 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-01 15:00:26,255 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,255 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,255 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,255 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,256 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,256 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,256 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,256 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,256 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,256 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,256 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,256 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,256 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,257 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,257 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,257 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,257 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,257 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,257 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,257 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,257 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,257 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,258 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,258 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,258 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,258 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,258 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,258 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,258 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,258 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,259 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,259 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,259 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,259 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,259 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,259 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,259 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,259 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,260 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,260 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,260 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,260 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,260 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,260 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,260 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,260 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,261 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,261 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,261 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,261 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,261 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,261 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,261 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,261 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,262 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,262 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,262 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,262 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,262 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,262 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,262 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,262 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,262 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,262 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,263 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,263 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,263 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,263 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,263 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,263 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,263 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,264 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,264 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,264 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,264 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,264 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,264 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,264 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,264 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,264 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,265 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,265 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,265 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,265 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,265 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,265 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,265 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,266 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,266 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,266 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,266 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,266 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,266 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,266 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,266 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,266 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,267 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,267 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,267 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,267 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,268 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,269 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,269 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,269 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,269 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,269 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,269 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,269 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,269 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,271 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,271 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,271 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,271 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,271 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,272 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,273 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,273 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,273 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,273 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,273 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,273 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,274 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,275 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,275 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,275 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,275 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,275 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,275 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,275 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,275 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 15:00:26,293 INFO L149 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2021-06-01 15:00:26,307 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-01 15:00:26,319 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-01 15:00:26,319 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-01 15:00:26,319 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-01 15:00:26,319 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-01 15:00:26,319 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-01 15:00:26,319 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-01 15:00:26,320 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-01 15:00:26,320 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == reader======== [2021-06-01 15:00:26,327 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 119 places, 120 transitions, 308 flow [2021-06-01 15:00:30,794 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 57581 states, 57577 states have (on average 4.205029786199351) internal successors, (242113), 57580 states have internal predecessors, (242113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:30,881 INFO L276 IsEmpty]: Start isEmpty. Operand has 57581 states, 57577 states have (on average 4.205029786199351) internal successors, (242113), 57580 states have internal predecessors, (242113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:31,391 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-01 15:00:31,392 INFO L301 ceAbstractionStarter]: Result for error location reader was SAFE (1/4) [2021-06-01 15:00:31,393 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-01 15:00:31,395 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-01 15:00:31,395 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-01 15:00:31,395 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-01 15:00:31,396 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-01 15:00:31,396 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-01 15:00:31,396 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-01 15:00:31,396 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-01 15:00:31,396 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == readerThread1of1ForFork0======== [2021-06-01 15:00:31,407 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 119 places, 120 transitions, 308 flow [2021-06-01 15:00:35,882 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 57581 states, 57577 states have (on average 4.205029786199351) internal successors, (242113), 57580 states have internal predecessors, (242113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:35,968 INFO L276 IsEmpty]: Start isEmpty. Operand has 57581 states, 57577 states have (on average 4.205029786199351) internal successors, (242113), 57580 states have internal predecessors, (242113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:35,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-01 15:00:35,970 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 15:00:35,971 INFO L554 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] [2021-06-01 15:00:35,971 INFO L430 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-01 15:00:35,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 15:00:35,975 INFO L82 PathProgramCache]: Analyzing trace with hash -576272667, now seen corresponding path program 1 times [2021-06-01 15:00:35,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 15:00:35,981 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30005302] [2021-06-01 15:00:35,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 15:00:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 15:00:36,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 15:00:36,213 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 15:00:36,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30005302] [2021-06-01 15:00:36,214 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30005302] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 15:00:36,214 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 15:00:36,214 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-01 15:00:36,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911123391] [2021-06-01 15:00:36,217 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-01 15:00:36,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 15:00:36,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-01 15:00:36,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-01 15:00:36,304 INFO L87 Difference]: Start difference. First operand has 57581 states, 57577 states have (on average 4.205029786199351) internal successors, (242113), 57580 states have internal predecessors, (242113), 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 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:37,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 15:00:37,914 INFO L93 Difference]: Finished difference Result 127826 states and 513006 transitions. [2021-06-01 15:00:37,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-01 15:00:37,916 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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 36 [2021-06-01 15:00:37,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 15:00:38,485 INFO L225 Difference]: With dead ends: 127826 [2021-06-01 15:00:38,485 INFO L226 Difference]: Without dead ends: 53634 [2021-06-01 15:00:38,486 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 76.0ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-06-01 15:00:38,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53634 states. [2021-06-01 15:00:40,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53634 to 42117. [2021-06-01 15:00:40,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42117 states, 42115 states have (on average 4.0012584589813605) internal successors, (168513), 42116 states have internal predecessors, (168513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:40,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42117 states to 42117 states and 168513 transitions. [2021-06-01 15:00:40,482 INFO L78 Accepts]: Start accepts. Automaton has 42117 states and 168513 transitions. Word has length 36 [2021-06-01 15:00:40,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 15:00:40,483 INFO L482 AbstractCegarLoop]: Abstraction has 42117 states and 168513 transitions. [2021-06-01 15:00:40,483 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:40,483 INFO L276 IsEmpty]: Start isEmpty. Operand 42117 states and 168513 transitions. [2021-06-01 15:00:40,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-01 15:00:40,485 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 15:00:40,485 INFO L554 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] [2021-06-01 15:00:40,486 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-01 15:00:40,486 INFO L430 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-01 15:00:40,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 15:00:40,486 INFO L82 PathProgramCache]: Analyzing trace with hash -961474224, now seen corresponding path program 1 times [2021-06-01 15:00:40,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 15:00:40,487 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102229076] [2021-06-01 15:00:40,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 15:00:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 15:00:40,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 15:00:40,546 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 15:00:40,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102229076] [2021-06-01 15:00:40,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102229076] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 15:00:40,547 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 15:00:40,547 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-01 15:00:40,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899006607] [2021-06-01 15:00:40,548 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-01 15:00:40,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 15:00:40,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-01 15:00:40,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-01 15:00:40,549 INFO L87 Difference]: Start difference. First operand 42117 states and 168513 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) [2021-06-01 15:00:40,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 15:00:40,780 INFO L93 Difference]: Finished difference Result 39231 states and 150811 transitions. [2021-06-01 15:00:40,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-01 15:00:40,781 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 [2021-06-01 15:00:40,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 15:00:40,929 INFO L225 Difference]: With dead ends: 39231 [2021-06-01 15:00:40,929 INFO L226 Difference]: Without dead ends: 38349 [2021-06-01 15:00:40,930 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-01 15:00:41,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38349 states. [2021-06-01 15:00:42,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38349 to 38349. [2021-06-01 15:00:42,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38349 states, 38347 states have (on average 3.8422040837614415) internal successors, (147337), 38348 states have internal predecessors, (147337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:42,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38349 states to 38349 states and 147337 transitions. [2021-06-01 15:00:42,163 INFO L78 Accepts]: Start accepts. Automaton has 38349 states and 147337 transitions. Word has length 39 [2021-06-01 15:00:42,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 15:00:42,164 INFO L482 AbstractCegarLoop]: Abstraction has 38349 states and 147337 transitions. [2021-06-01 15:00:42,164 INFO L483 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) [2021-06-01 15:00:42,164 INFO L276 IsEmpty]: Start isEmpty. Operand 38349 states and 147337 transitions. [2021-06-01 15:00:42,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-01 15:00:42,165 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 15:00:42,165 INFO L554 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] [2021-06-01 15:00:42,165 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-01 15:00:42,165 INFO L430 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-01 15:00:42,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 15:00:42,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1809459636, now seen corresponding path program 2 times [2021-06-01 15:00:42,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 15:00:42,166 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769133651] [2021-06-01 15:00:42,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 15:00:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 15:00:42,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 15:00:42,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 15:00:42,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769133651] [2021-06-01 15:00:42,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769133651] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 15:00:42,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 15:00:42,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-01 15:00:42,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467528684] [2021-06-01 15:00:42,205 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-01 15:00:42,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 15:00:42,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-01 15:00:42,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-01 15:00:42,206 INFO L87 Difference]: Start difference. First operand 38349 states and 147337 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 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) [2021-06-01 15:00:42,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 15:00:42,321 INFO L93 Difference]: Finished difference Result 27110 states and 97371 transitions. [2021-06-01 15:00:42,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-01 15:00:42,322 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 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 [2021-06-01 15:00:42,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 15:00:42,404 INFO L225 Difference]: With dead ends: 27110 [2021-06-01 15:00:42,405 INFO L226 Difference]: Without dead ends: 24090 [2021-06-01 15:00:42,405 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-01 15:00:42,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24090 states. [2021-06-01 15:00:42,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24090 to 20943. [2021-06-01 15:00:42,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20943 states, 20938 states have (on average 3.6121883656509697) internal successors, (75632), 20942 states have internal predecessors, (75632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:43,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20943 states to 20943 states and 75632 transitions. [2021-06-01 15:00:43,021 INFO L78 Accepts]: Start accepts. Automaton has 20943 states and 75632 transitions. Word has length 39 [2021-06-01 15:00:43,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 15:00:43,021 INFO L482 AbstractCegarLoop]: Abstraction has 20943 states and 75632 transitions. [2021-06-01 15:00:43,021 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 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) [2021-06-01 15:00:43,022 INFO L276 IsEmpty]: Start isEmpty. Operand 20943 states and 75632 transitions. [2021-06-01 15:00:43,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-01 15:00:43,033 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 15:00:43,034 INFO L554 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] [2021-06-01 15:00:43,034 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-01 15:00:43,034 INFO L430 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-01 15:00:43,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 15:00:43,034 INFO L82 PathProgramCache]: Analyzing trace with hash 980522090, now seen corresponding path program 1 times [2021-06-01 15:00:43,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 15:00:43,034 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451191534] [2021-06-01 15:00:43,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 15:00:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 15:00:43,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 15:00:43,072 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 15:00:43,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451191534] [2021-06-01 15:00:43,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451191534] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 15:00:43,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 15:00:43,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-01 15:00:43,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318568107] [2021-06-01 15:00:43,073 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-01 15:00:43,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 15:00:43,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-01 15:00:43,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-01 15:00:43,074 INFO L87 Difference]: Start difference. First operand 20943 states and 75632 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:43,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 15:00:43,305 INFO L93 Difference]: Finished difference Result 23659 states and 83402 transitions. [2021-06-01 15:00:43,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-01 15:00:43,305 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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 53 [2021-06-01 15:00:43,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 15:00:43,343 INFO L225 Difference]: With dead ends: 23659 [2021-06-01 15:00:43,343 INFO L226 Difference]: Without dead ends: 17229 [2021-06-01 15:00:43,343 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.6ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-06-01 15:00:43,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17229 states. [2021-06-01 15:00:43,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17229 to 13563. [2021-06-01 15:00:43,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13563 states, 13562 states have (on average 3.5751364105589145) internal successors, (48486), 13562 states have internal predecessors, (48486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:43,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13563 states to 13563 states and 48486 transitions. [2021-06-01 15:00:43,854 INFO L78 Accepts]: Start accepts. Automaton has 13563 states and 48486 transitions. Word has length 53 [2021-06-01 15:00:43,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 15:00:43,855 INFO L482 AbstractCegarLoop]: Abstraction has 13563 states and 48486 transitions. [2021-06-01 15:00:43,855 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:43,855 INFO L276 IsEmpty]: Start isEmpty. Operand 13563 states and 48486 transitions. [2021-06-01 15:00:43,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-01 15:00:43,868 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 15:00:43,868 INFO L554 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, 1, 1, 1, 1, 1] [2021-06-01 15:00:43,868 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-01 15:00:43,868 INFO L430 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-01 15:00:43,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 15:00:43,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1901331, now seen corresponding path program 1 times [2021-06-01 15:00:43,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 15:00:43,869 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994179175] [2021-06-01 15:00:43,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 15:00:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 15:00:43,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 15:00:43,930 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 15:00:43,930 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994179175] [2021-06-01 15:00:43,930 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994179175] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 15:00:43,930 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 15:00:43,930 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-01 15:00:43,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343557840] [2021-06-01 15:00:43,930 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-01 15:00:43,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 15:00:43,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-01 15:00:43,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-01 15:00:43,931 INFO L87 Difference]: Start difference. First operand 13563 states and 48486 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:44,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 15:00:44,029 INFO L93 Difference]: Finished difference Result 15627 states and 55450 transitions. [2021-06-01 15:00:44,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-01 15:00:44,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 60 [2021-06-01 15:00:44,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 15:00:44,054 INFO L225 Difference]: With dead ends: 15627 [2021-06-01 15:00:44,054 INFO L226 Difference]: Without dead ends: 11235 [2021-06-01 15:00:44,054 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.5ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-01 15:00:44,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11235 states. [2021-06-01 15:00:44,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11235 to 10323. [2021-06-01 15:00:44,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10323 states, 10322 states have (on average 3.5394303429567913) internal successors, (36534), 10322 states have internal predecessors, (36534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:44,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10323 states to 10323 states and 36534 transitions. [2021-06-01 15:00:44,262 INFO L78 Accepts]: Start accepts. Automaton has 10323 states and 36534 transitions. Word has length 60 [2021-06-01 15:00:44,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 15:00:44,263 INFO L482 AbstractCegarLoop]: Abstraction has 10323 states and 36534 transitions. [2021-06-01 15:00:44,263 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:44,263 INFO L276 IsEmpty]: Start isEmpty. Operand 10323 states and 36534 transitions. [2021-06-01 15:00:44,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-01 15:00:44,271 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 15:00:44,271 INFO L554 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, 1, 1, 1, 1, 1] [2021-06-01 15:00:44,271 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-01 15:00:44,272 INFO L430 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-01 15:00:44,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 15:00:44,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1359958325, now seen corresponding path program 2 times [2021-06-01 15:00:44,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 15:00:44,272 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000216891] [2021-06-01 15:00:44,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 15:00:44,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 15:00:44,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 15:00:44,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 15:00:44,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000216891] [2021-06-01 15:00:44,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000216891] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 15:00:44,357 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 15:00:44,357 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-01 15:00:44,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110903765] [2021-06-01 15:00:44,357 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-01 15:00:44,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 15:00:44,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-01 15:00:44,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-01 15:00:44,358 INFO L87 Difference]: Start difference. First operand 10323 states and 36534 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:44,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 15:00:44,388 INFO L93 Difference]: Finished difference Result 4977 states and 16629 transitions. [2021-06-01 15:00:44,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-01 15:00:44,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 60 [2021-06-01 15:00:44,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 15:00:44,390 INFO L225 Difference]: With dead ends: 4977 [2021-06-01 15:00:44,390 INFO L226 Difference]: Without dead ends: 0 [2021-06-01 15:00:44,390 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-01 15:00:44,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-01 15:00:44,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-01 15:00:44,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:44,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-01 15:00:44,391 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2021-06-01 15:00:44,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 15:00:44,391 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-01 15:00:44,391 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:44,391 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-01 15:00:44,391 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-01 15:00:44,391 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-01 15:00:44,391 INFO L301 ceAbstractionStarter]: Result for error location readerThread1of1ForFork0 was SAFE (2/4) [2021-06-01 15:00:44,392 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-01 15:00:44,399 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-01 15:00:44,399 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-01 15:00:44,399 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-01 15:00:44,399 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-01 15:00:44,399 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-01 15:00:44,399 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-01 15:00:44,399 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-01 15:00:44,399 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == readerThread1of1ForFork3======== [2021-06-01 15:00:44,403 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 119 places, 120 transitions, 308 flow [2021-06-01 15:00:49,387 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 57581 states, 57577 states have (on average 4.205029786199351) internal successors, (242113), 57580 states have internal predecessors, (242113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:49,458 INFO L276 IsEmpty]: Start isEmpty. Operand has 57581 states, 57577 states have (on average 4.205029786199351) internal successors, (242113), 57580 states have internal predecessors, (242113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:49,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-01 15:00:49,468 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 15:00:49,468 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 15:00:49,469 INFO L430 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-01 15:00:49,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 15:00:49,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1856661830, now seen corresponding path program 1 times [2021-06-01 15:00:49,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 15:00:49,469 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816409055] [2021-06-01 15:00:49,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 15:00:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 15:00:49,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 15:00:49,509 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 15:00:49,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816409055] [2021-06-01 15:00:49,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816409055] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 15:00:49,509 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 15:00:49,509 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-01 15:00:49,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5966866] [2021-06-01 15:00:49,510 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-01 15:00:49,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 15:00:49,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-01 15:00:49,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-01 15:00:49,589 INFO L87 Difference]: Start difference. First operand has 57581 states, 57577 states have (on average 4.205029786199351) internal successors, (242113), 57580 states have internal predecessors, (242113), 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 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:50,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 15:00:50,453 INFO L93 Difference]: Finished difference Result 125594 states and 505332 transitions. [2021-06-01 15:00:50,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-01 15:00:50,456 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-01 15:00:50,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 15:00:51,026 INFO L225 Difference]: With dead ends: 125594 [2021-06-01 15:00:51,026 INFO L226 Difference]: Without dead ends: 53634 [2021-06-01 15:00:51,026 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 49.7ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-06-01 15:00:51,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53634 states. [2021-06-01 15:00:52,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53634 to 42117. [2021-06-01 15:00:52,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42117 states, 42115 states have (on average 4.000688590763386) internal successors, (168489), 42116 states have internal predecessors, (168489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:52,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42117 states to 42117 states and 168489 transitions. [2021-06-01 15:00:52,331 INFO L78 Accepts]: Start accepts. Automaton has 42117 states and 168489 transitions. Word has length 48 [2021-06-01 15:00:52,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 15:00:52,333 INFO L482 AbstractCegarLoop]: Abstraction has 42117 states and 168489 transitions. [2021-06-01 15:00:52,333 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:52,333 INFO L276 IsEmpty]: Start isEmpty. Operand 42117 states and 168489 transitions. [2021-06-01 15:00:52,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-06-01 15:00:52,348 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 15:00:52,348 INFO L554 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] [2021-06-01 15:00:52,349 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-01 15:00:52,349 INFO L430 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-01 15:00:52,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 15:00:52,349 INFO L82 PathProgramCache]: Analyzing trace with hash 333335531, now seen corresponding path program 1 times [2021-06-01 15:00:52,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 15:00:52,349 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611317732] [2021-06-01 15:00:52,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 15:00:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 15:00:52,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 15:00:52,374 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 15:00:52,374 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611317732] [2021-06-01 15:00:52,374 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611317732] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 15:00:52,374 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 15:00:52,374 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-01 15:00:52,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414341575] [2021-06-01 15:00:52,375 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-01 15:00:52,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 15:00:52,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-01 15:00:52,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-01 15:00:52,375 INFO L87 Difference]: Start difference. First operand 42117 states and 168489 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:52,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 15:00:52,543 INFO L93 Difference]: Finished difference Result 39219 states and 150733 transitions. [2021-06-01 15:00:52,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-01 15:00:52,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2021-06-01 15:00:52,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 15:00:52,634 INFO L225 Difference]: With dead ends: 39219 [2021-06-01 15:00:52,634 INFO L226 Difference]: Without dead ends: 38013 [2021-06-01 15:00:52,634 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-01 15:00:52,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38013 states. [2021-06-01 15:00:53,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38013 to 38013. [2021-06-01 15:00:53,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38013 states, 38011 states have (on average 3.8428612769987636) internal successors, (146071), 38012 states have internal predecessors, (146071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:53,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38013 states to 38013 states and 146071 transitions. [2021-06-01 15:00:53,650 INFO L78 Accepts]: Start accepts. Automaton has 38013 states and 146071 transitions. Word has length 51 [2021-06-01 15:00:53,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 15:00:53,650 INFO L482 AbstractCegarLoop]: Abstraction has 38013 states and 146071 transitions. [2021-06-01 15:00:53,650 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:53,650 INFO L276 IsEmpty]: Start isEmpty. Operand 38013 states and 146071 transitions. [2021-06-01 15:00:53,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-06-01 15:00:53,663 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 15:00:53,663 INFO L554 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] [2021-06-01 15:00:53,664 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-01 15:00:53,664 INFO L430 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-01 15:00:53,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 15:00:53,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1396420791, now seen corresponding path program 2 times [2021-06-01 15:00:53,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 15:00:53,664 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762044917] [2021-06-01 15:00:53,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 15:00:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 15:00:53,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 15:00:53,705 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 15:00:53,705 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762044917] [2021-06-01 15:00:53,705 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762044917] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 15:00:53,705 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 15:00:53,705 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-01 15:00:53,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582042326] [2021-06-01 15:00:53,706 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-01 15:00:53,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 15:00:53,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-01 15:00:53,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-01 15:00:53,706 INFO L87 Difference]: Start difference. First operand 38013 states and 146071 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:54,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 15:00:54,157 INFO L93 Difference]: Finished difference Result 48651 states and 182114 transitions. [2021-06-01 15:00:54,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-01 15:00:54,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 51 [2021-06-01 15:00:54,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 15:00:54,285 INFO L225 Difference]: With dead ends: 48651 [2021-06-01 15:00:54,285 INFO L226 Difference]: Without dead ends: 46245 [2021-06-01 15:00:54,286 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-01 15:00:54,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46245 states. [2021-06-01 15:00:55,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46245 to 35241. [2021-06-01 15:00:55,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35241 states, 35237 states have (on average 3.8162726679342738) internal successors, (134474), 35240 states have internal predecessors, (134474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:55,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35241 states to 35241 states and 134474 transitions. [2021-06-01 15:00:55,334 INFO L78 Accepts]: Start accepts. Automaton has 35241 states and 134474 transitions. Word has length 51 [2021-06-01 15:00:55,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 15:00:55,334 INFO L482 AbstractCegarLoop]: Abstraction has 35241 states and 134474 transitions. [2021-06-01 15:00:55,334 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:55,334 INFO L276 IsEmpty]: Start isEmpty. Operand 35241 states and 134474 transitions. [2021-06-01 15:00:55,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-01 15:00:55,347 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 15:00:55,347 INFO L554 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] [2021-06-01 15:00:55,347 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-01 15:00:55,347 INFO L430 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-01 15:00:55,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 15:00:55,348 INFO L82 PathProgramCache]: Analyzing trace with hash -219237236, now seen corresponding path program 1 times [2021-06-01 15:00:55,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 15:00:55,348 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401981090] [2021-06-01 15:00:55,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 15:00:55,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 15:00:55,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 15:00:55,380 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 15:00:55,381 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401981090] [2021-06-01 15:00:55,381 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401981090] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 15:00:55,381 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 15:00:55,381 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-01 15:00:55,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678082802] [2021-06-01 15:00:55,381 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-01 15:00:55,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 15:00:55,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-01 15:00:55,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-01 15:00:55,382 INFO L87 Difference]: Start difference. First operand 35241 states and 134474 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:55,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 15:00:55,763 INFO L93 Difference]: Finished difference Result 71416 states and 266999 transitions. [2021-06-01 15:00:55,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-01 15:00:55,764 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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 53 [2021-06-01 15:00:55,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 15:00:55,928 INFO L225 Difference]: With dead ends: 71416 [2021-06-01 15:00:55,928 INFO L226 Difference]: Without dead ends: 61540 [2021-06-01 15:00:55,928 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.7ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-06-01 15:00:56,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61540 states. [2021-06-01 15:00:56,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61540 to 30530. [2021-06-01 15:00:56,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30530 states, 30526 states have (on average 3.791161632706545) internal successors, (115729), 30529 states have internal predecessors, (115729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:57,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30530 states to 30530 states and 115729 transitions. [2021-06-01 15:00:57,000 INFO L78 Accepts]: Start accepts. Automaton has 30530 states and 115729 transitions. Word has length 53 [2021-06-01 15:00:57,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 15:00:57,001 INFO L482 AbstractCegarLoop]: Abstraction has 30530 states and 115729 transitions. [2021-06-01 15:00:57,001 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:57,001 INFO L276 IsEmpty]: Start isEmpty. Operand 30530 states and 115729 transitions. [2021-06-01 15:00:57,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-01 15:00:57,013 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 15:00:57,013 INFO L554 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] [2021-06-01 15:00:57,013 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-01 15:00:57,013 INFO L430 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-01 15:00:57,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 15:00:57,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1983128374, now seen corresponding path program 1 times [2021-06-01 15:00:57,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 15:00:57,014 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614379473] [2021-06-01 15:00:57,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 15:00:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 15:00:57,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 15:00:57,044 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 15:00:57,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614379473] [2021-06-01 15:00:57,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614379473] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 15:00:57,044 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 15:00:57,044 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-01 15:00:57,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979031877] [2021-06-01 15:00:57,045 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-01 15:00:57,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 15:00:57,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-01 15:00:57,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-01 15:00:57,045 INFO L87 Difference]: Start difference. First operand 30530 states and 115729 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:57,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 15:00:57,384 INFO L93 Difference]: Finished difference Result 17573 states and 62004 transitions. [2021-06-01 15:00:57,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-01 15:00:57,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 54 [2021-06-01 15:00:57,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 15:00:57,413 INFO L225 Difference]: With dead ends: 17573 [2021-06-01 15:00:57,414 INFO L226 Difference]: Without dead ends: 12369 [2021-06-01 15:00:57,414 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.2ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-01 15:00:57,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12369 states. [2021-06-01 15:00:57,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12369 to 11457. [2021-06-01 15:00:57,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11457 states, 11456 states have (on average 3.4860335195530725) internal successors, (39936), 11456 states have internal predecessors, (39936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:57,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11457 states to 11457 states and 39936 transitions. [2021-06-01 15:00:57,612 INFO L78 Accepts]: Start accepts. Automaton has 11457 states and 39936 transitions. Word has length 54 [2021-06-01 15:00:57,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 15:00:57,612 INFO L482 AbstractCegarLoop]: Abstraction has 11457 states and 39936 transitions. [2021-06-01 15:00:57,613 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:57,613 INFO L276 IsEmpty]: Start isEmpty. Operand 11457 states and 39936 transitions. [2021-06-01 15:00:57,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-01 15:00:57,623 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 15:00:57,623 INFO L554 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, 1, 1, 1, 1, 1] [2021-06-01 15:00:57,623 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-01 15:00:57,623 INFO L430 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-01 15:00:57,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 15:00:57,623 INFO L82 PathProgramCache]: Analyzing trace with hash -676092975, now seen corresponding path program 1 times [2021-06-01 15:00:57,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 15:00:57,624 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277235078] [2021-06-01 15:00:57,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 15:00:57,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 15:00:57,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 15:00:57,655 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 15:00:57,655 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277235078] [2021-06-01 15:00:57,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277235078] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 15:00:57,656 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 15:00:57,656 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-01 15:00:57,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135199442] [2021-06-01 15:00:57,656 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-01 15:00:57,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 15:00:57,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-01 15:00:57,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-01 15:00:57,657 INFO L87 Difference]: Start difference. First operand 11457 states and 39936 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:57,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 15:00:57,686 INFO L93 Difference]: Finished difference Result 6111 states and 20031 transitions. [2021-06-01 15:00:57,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-01 15:00:57,686 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 60 [2021-06-01 15:00:57,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 15:00:57,686 INFO L225 Difference]: With dead ends: 6111 [2021-06-01 15:00:57,686 INFO L226 Difference]: Without dead ends: 0 [2021-06-01 15:00:57,687 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-01 15:00:57,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-01 15:00:57,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-01 15:00:57,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:57,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-01 15:00:57,687 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2021-06-01 15:00:57,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 15:00:57,687 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-01 15:00:57,687 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:00:57,687 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-01 15:00:57,687 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-01 15:00:57,687 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-01 15:00:57,687 INFO L301 ceAbstractionStarter]: Result for error location readerThread1of1ForFork3 was SAFE (3/4) [2021-06-01 15:00:57,688 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-01 15:00:57,688 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-01 15:00:57,688 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-01 15:00:57,688 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-01 15:00:57,688 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-01 15:00:57,688 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-01 15:00:57,688 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-01 15:00:57,688 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-01 15:00:57,688 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-01 15:00:57,690 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 119 places, 120 transitions, 308 flow [2021-06-01 15:01:02,510 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 57581 states, 57577 states have (on average 4.205029786199351) internal successors, (242113), 57580 states have internal predecessors, (242113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:01:02,583 INFO L276 IsEmpty]: Start isEmpty. Operand has 57581 states, 57577 states have (on average 4.205029786199351) internal successors, (242113), 57580 states have internal predecessors, (242113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 15:01:02,727 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-01 15:01:02,727 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (4/4) [2021-06-01 15:01:02,727 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-01 15:01:02,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.06 03:01:02 BasicIcfg [2021-06-01 15:01:02,729 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-01 15:01:02,730 INFO L168 Benchmark]: Toolchain (without parser) took 37404.84 ms. Allocated memory was 406.8 MB in the beginning and 13.1 GB in the end (delta: 12.7 GB). Free memory was 369.7 MB in the beginning and 9.7 GB in the end (delta: -9.3 GB). Peak memory consumption was 3.4 GB. Max. memory is 16.0 GB. [2021-06-01 15:01:02,730 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 406.8 MB. Free memory is still 387.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-01 15:01:02,730 INFO L168 Benchmark]: CACSL2BoogieTranslator took 421.16 ms. Allocated memory is still 406.8 MB. Free memory was 369.4 MB in the beginning and 368.9 MB in the end (delta: 467.8 kB). Peak memory consumption was 5.2 MB. Max. memory is 16.0 GB. [2021-06-01 15:01:02,730 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.04 ms. Allocated memory is still 406.8 MB. Free memory was 368.9 MB in the beginning and 366.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-01 15:01:02,731 INFO L168 Benchmark]: Boogie Preprocessor took 32.89 ms. Allocated memory is still 406.8 MB. Free memory was 366.8 MB in the beginning and 364.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-01 15:01:02,731 INFO L168 Benchmark]: RCFGBuilder took 389.47 ms. Allocated memory is still 406.8 MB. Free memory was 364.7 MB in the beginning and 331.2 MB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.0 GB. [2021-06-01 15:01:02,731 INFO L168 Benchmark]: TraceAbstraction took 36504.57 ms. Allocated memory was 406.8 MB in the beginning and 13.1 GB in the end (delta: 12.7 GB). Free memory was 330.1 MB in the beginning and 9.7 GB in the end (delta: -9.3 GB). Peak memory consumption was 3.3 GB. Max. memory is 16.0 GB. [2021-06-01 15:01:02,732 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 406.8 MB. Free memory is still 387.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 421.16 ms. Allocated memory is still 406.8 MB. Free memory was 369.4 MB in the beginning and 368.9 MB in the end (delta: 467.8 kB). Peak memory consumption was 5.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 50.04 ms. Allocated memory is still 406.8 MB. Free memory was 368.9 MB in the beginning and 366.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 32.89 ms. Allocated memory is still 406.8 MB. Free memory was 366.8 MB in the beginning and 364.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 389.47 ms. Allocated memory is still 406.8 MB. Free memory was 364.7 MB in the beginning and 331.2 MB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 36504.57 ms. Allocated memory was 406.8 MB in the beginning and 13.1 GB in the end (delta: 12.7 GB). Free memory was 330.1 MB in the beginning and 9.7 GB in the end (delta: -9.3 GB). Peak memory consumption was 3.3 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 739]: 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: reader with 1 thread instances CFG has 7 procedures, 132 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5074.3ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 596.6ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4474.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=57581occurred 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: readerThread1of1ForFork0 with 1 thread instances CFG has 7 procedures, 132 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12995.8ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 123.9ms, AutomataDifference: 3276.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4486.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1097 SDtfs, 1016 SDslu, 2198 SDs, 0 SdLazy, 260 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 211.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 130.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=57581occurred in iteration=0, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 4555.0ms AutomataMinimizationTime, 6 MinimizatonAttempts, 19242 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 19.9ms SsaConstructionTime, 109.2ms SatisfiabilityAnalysisTime, 310.6ms InterpolantComputationTime, 287 NumberOfCodeBlocks, 287 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 281 ConstructedInterpolants, 0 QuantifiedInterpolants, 541 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: readerThread1of1ForFork3 with 1 thread instances CFG has 7 procedures, 132 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13288.7ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 144.0ms, AutomataDifference: 3301.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4988.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1083 SDtfs, 1145 SDslu, 2139 SDs, 0 SdLazy, 283 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 377.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 108.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=57581occurred in iteration=0, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 4637.5ms AutomataMinimizationTime, 6 MinimizatonAttempts, 54443 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.2ms SsaConstructionTime, 29.8ms SatisfiabilityAnalysisTime, 134.2ms InterpolantComputationTime, 317 NumberOfCodeBlocks, 317 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 311 ConstructedInterpolants, 0 QuantifiedInterpolants, 641 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 132 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5038.7ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 216.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4822.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=57581occurred 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...