/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 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-05 18:23:22,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 18:23:22,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 18:23:22,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 18:23:22,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 18:23:22,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 18:23:22,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 18:23:22,569 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 [2021-06-05 18:23:22,589 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 18:23:22,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 18:23:22,589 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 18:23:22,590 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 18:23:22,590 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 18:23:22,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 18:23:22,590 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 18:23:22,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 18:23:22,591 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 18:23:22,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 18:23:22,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 18:23:22,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 18:23:22,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 18:23:22,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 18:23:22,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 18:23:22,591 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 18:23:22,591 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 18:23:22,591 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 18:23:22,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 18:23:22,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 18:23:22,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 18:23:22,592 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 18:23:22,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 18:23:22,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 18:23:22,592 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 18:23:22,592 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 18:23:22,592 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 18:23:22,592 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 18:23:22,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 18:23:22,593 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 18:23:22,593 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 18:23:22,593 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 18:23:22,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 18:23:22,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 18:23:22,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 18:23:22,819 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 18:23:22,820 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 18:23:22,820 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2021-06-05 18:23:22,865 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9941c209a/2b319b9dea2847ea9c2b1e080c92d91c/FLAG2fb399dcf [2021-06-05 18:23:23,262 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 18:23:23,262 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2021-06-05 18:23:23,276 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9941c209a/2b319b9dea2847ea9c2b1e080c92d91c/FLAG2fb399dcf [2021-06-05 18:23:23,285 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9941c209a/2b319b9dea2847ea9c2b1e080c92d91c [2021-06-05 18:23:23,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 18:23:23,288 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 18:23:23,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 18:23:23,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 18:23:23,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 18:23:23,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 06:23:23" (1/1) ... [2021-06-05 18:23:23,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f61f23e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:23:23, skipping insertion in model container [2021-06-05 18:23:23,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 06:23:23" (1/1) ... [2021-06-05 18:23:23,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 18:23:23,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 18:23:23,429 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-06-05 18:23:23,557 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] [2021-06-05 18:23:23,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 18:23:23,574 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 18:23:23,596 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-06-05 18:23:23,622 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] [2021-06-05 18:23:23,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 18:23:23,678 INFO L208 MainTranslator]: Completed translation [2021-06-05 18:23:23,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:23:23 WrapperNode [2021-06-05 18:23:23,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 18:23:23,679 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 18:23:23,679 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 18:23:23,680 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 18:23:23,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:23:23" (1/1) ... [2021-06-05 18:23:23,709 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:23:23" (1/1) ... [2021-06-05 18:23:23,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 18:23:23,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 18:23:23,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 18:23:23,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 18:23:23,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:23:23" (1/1) ... [2021-06-05 18:23:23,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:23:23" (1/1) ... [2021-06-05 18:23:23,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:23:23" (1/1) ... [2021-06-05 18:23:23,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:23:23" (1/1) ... [2021-06-05 18:23:23,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:23:23" (1/1) ... [2021-06-05 18:23:23,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:23:23" (1/1) ... [2021-06-05 18:23:23,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:23:23" (1/1) ... [2021-06-05 18:23:23,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 18:23:23,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 18:23:23,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 18:23:23,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 18:23:23,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:23:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 18:23:23,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-05 18:23:23,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 18:23:23,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-05 18:23:23,830 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2021-06-05 18:23:23,831 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2021-06-05 18:23:23,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 18:23:23,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 18:23:23,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 18:23:23,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-05 18:23:23,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 18:23:23,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 18:23:23,831 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2021-06-05 18:23:23,831 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2021-06-05 18:23:23,832 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 18:23:24,288 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 18:23:24,289 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-06-05 18:23:24,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 06:23:24 BoogieIcfgContainer [2021-06-05 18:23:24,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 18:23:24,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 18:23:24,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 18:23:24,293 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 18:23:24,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 06:23:23" (1/3) ... [2021-06-05 18:23:24,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3ee9a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 06:23:24, skipping insertion in model container [2021-06-05 18:23:24,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:23:23" (2/3) ... [2021-06-05 18:23:24,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3ee9a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 06:23:24, skipping insertion in model container [2021-06-05 18:23:24,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 06:23:24" (3/3) ... [2021-06-05 18:23:24,295 INFO L111 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2021-06-05 18:23:24,299 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 18:23:24,299 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 18:23:24,299 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 18:23:24,299 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 18:23:24,342 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,345 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,345 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,346 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,346 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,346 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,346 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,346 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,346 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,346 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,346 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,347 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,347 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,347 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,347 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,347 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,347 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,351 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,351 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,351 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,352 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,352 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,352 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,352 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,352 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,352 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,352 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,352 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,354 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,354 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,364 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,365 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,365 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,365 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,365 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,366 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,366 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,366 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,366 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,366 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,366 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,366 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,366 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,366 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,366 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,367 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,367 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,367 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,367 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,367 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,367 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,367 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,367 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,368 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,368 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,368 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,368 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,368 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,368 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,368 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,368 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,368 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,368 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,369 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,369 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,369 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,369 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,369 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,369 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,369 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,369 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,370 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,370 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,370 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,370 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,370 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,370 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,370 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,370 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,370 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,371 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,371 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,371 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,371 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,371 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,371 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,371 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,371 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,372 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,372 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,372 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,372 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,372 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,372 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,372 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,372 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,372 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,373 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,373 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,373 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,374 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,374 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,375 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,375 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,375 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,375 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,375 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,375 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,375 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,379 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,379 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,379 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,380 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,380 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,380 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,381 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,381 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,381 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,381 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,382 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,382 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,384 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,384 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,385 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,385 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,385 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,385 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,385 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,385 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,386 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:23:24,418 INFO L149 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2021-06-05 18:23:24,435 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 18:23:24,455 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 18:23:24,455 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 18:23:24,455 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 18:23:24,455 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 18:23:24,456 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 18:23:24,456 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 18:23:24,456 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 18:23:24,456 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == reader======== [2021-06-05 18:23:24,468 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 119 places, 120 transitions, 308 flow [2021-06-05 18:23:28,778 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) [2021-06-05 18:23:28,859 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) [2021-06-05 18:23:29,244 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 18:23:29,245 INFO L301 ceAbstractionStarter]: Result for error location reader was SAFE (1/4) [2021-06-05 18:23:29,246 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 18:23:29,251 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 18:23:29,251 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 18:23:29,251 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 18:23:29,251 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 18:23:29,252 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 18:23:29,252 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 18:23:29,252 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 18:23:29,252 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == readerThread1of1ForFork0======== [2021-06-05 18:23:29,254 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 119 places, 120 transitions, 308 flow [2021-06-05 18:23:33,195 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) [2021-06-05 18:23:33,268 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) [2021-06-05 18:23:33,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 18:23:33,269 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 18:23:33,270 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] [2021-06-05 18:23:33,270 INFO L430 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 18:23:33,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 18:23:33,274 INFO L82 PathProgramCache]: Analyzing trace with hash -576272667, now seen corresponding path program 1 times [2021-06-05 18:23:33,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 18:23:33,279 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691392186] [2021-06-05 18:23:33,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 18:23:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 18:23:33,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 18:23:33,636 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 18:23:33,636 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691392186] [2021-06-05 18:23:33,636 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691392186] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 18:23:33,636 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 18:23:33,637 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 18:23:33,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573799094] [2021-06-05 18:23:33,639 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 18:23:33,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 18:23:33,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 18:23:33,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 18:23:33,712 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) [2021-06-05 18:23:35,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 18:23:35,034 INFO L93 Difference]: Finished difference Result 127826 states and 513006 transitions. [2021-06-05 18:23:35,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 18:23:35,036 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 [2021-06-05 18:23:35,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 18:23:35,378 INFO L225 Difference]: With dead ends: 127826 [2021-06-05 18:23:35,378 INFO L226 Difference]: Without dead ends: 53634 [2021-06-05 18:23:35,379 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 57.4ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-06-05 18:23:35,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53634 states. [2021-06-05 18:23:36,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53634 to 42117. [2021-06-05 18:23:37,025 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) [2021-06-05 18:23:37,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42117 states to 42117 states and 168513 transitions. [2021-06-05 18:23:37,220 INFO L78 Accepts]: Start accepts. Automaton has 42117 states and 168513 transitions. Word has length 36 [2021-06-05 18:23:37,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 18:23:37,221 INFO L482 AbstractCegarLoop]: Abstraction has 42117 states and 168513 transitions. [2021-06-05 18:23:37,221 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) [2021-06-05 18:23:37,221 INFO L276 IsEmpty]: Start isEmpty. Operand 42117 states and 168513 transitions. [2021-06-05 18:23:37,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 18:23:37,223 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 18:23:37,224 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] [2021-06-05 18:23:37,224 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 18:23:37,224 INFO L430 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 18:23:37,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 18:23:37,224 INFO L82 PathProgramCache]: Analyzing trace with hash -961474224, now seen corresponding path program 1 times [2021-06-05 18:23:37,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 18:23:37,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319272311] [2021-06-05 18:23:37,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 18:23:37,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 18:23:37,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 18:23:37,305 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 18:23:37,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319272311] [2021-06-05 18:23:37,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319272311] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 18:23:37,306 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 18:23:37,306 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 18:23:37,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789727800] [2021-06-05 18:23:37,307 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 18:23:37,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 18:23:37,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 18:23:37,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 18:23:37,307 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) [2021-06-05 18:23:37,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 18:23:37,551 INFO L93 Difference]: Finished difference Result 39231 states and 150811 transitions. [2021-06-05 18:23:37,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 18:23:37,555 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 [2021-06-05 18:23:37,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 18:23:37,673 INFO L225 Difference]: With dead ends: 39231 [2021-06-05 18:23:37,674 INFO L226 Difference]: Without dead ends: 38349 [2021-06-05 18:23:37,676 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 18:23:38,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38349 states. [2021-06-05 18:23:38,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38349 to 38349. [2021-06-05 18:23:38,838 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) [2021-06-05 18:23:38,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38349 states to 38349 states and 147337 transitions. [2021-06-05 18:23:38,934 INFO L78 Accepts]: Start accepts. Automaton has 38349 states and 147337 transitions. Word has length 39 [2021-06-05 18:23:38,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 18:23:38,934 INFO L482 AbstractCegarLoop]: Abstraction has 38349 states and 147337 transitions. [2021-06-05 18:23:38,934 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) [2021-06-05 18:23:38,935 INFO L276 IsEmpty]: Start isEmpty. Operand 38349 states and 147337 transitions. [2021-06-05 18:23:38,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 18:23:38,936 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 18:23:38,936 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] [2021-06-05 18:23:38,936 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 18:23:38,936 INFO L430 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 18:23:38,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 18:23:38,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1809459636, now seen corresponding path program 2 times [2021-06-05 18:23:38,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 18:23:38,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298176919] [2021-06-05 18:23:38,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 18:23:38,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 18:23:38,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 18:23:38,988 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 18:23:38,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298176919] [2021-06-05 18:23:38,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298176919] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 18:23:38,989 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 18:23:38,989 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 18:23:38,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972395870] [2021-06-05 18:23:38,989 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 18:23:38,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 18:23:38,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 18:23:38,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 18:23:38,990 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) [2021-06-05 18:23:39,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 18:23:39,102 INFO L93 Difference]: Finished difference Result 27110 states and 97371 transitions. [2021-06-05 18:23:39,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 18:23:39,103 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 [2021-06-05 18:23:39,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 18:23:39,154 INFO L225 Difference]: With dead ends: 27110 [2021-06-05 18:23:39,154 INFO L226 Difference]: Without dead ends: 24090 [2021-06-05 18:23:39,155 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 [2021-06-05 18:23:39,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24090 states. [2021-06-05 18:23:39,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24090 to 20943. [2021-06-05 18:23:39,713 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) [2021-06-05 18:23:39,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20943 states to 20943 states and 75632 transitions. [2021-06-05 18:23:39,766 INFO L78 Accepts]: Start accepts. Automaton has 20943 states and 75632 transitions. Word has length 39 [2021-06-05 18:23:39,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 18:23:39,766 INFO L482 AbstractCegarLoop]: Abstraction has 20943 states and 75632 transitions. [2021-06-05 18:23:39,766 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) [2021-06-05 18:23:39,766 INFO L276 IsEmpty]: Start isEmpty. Operand 20943 states and 75632 transitions. [2021-06-05 18:23:39,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 18:23:39,777 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 18:23:39,777 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] [2021-06-05 18:23:39,777 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 18:23:39,777 INFO L430 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 18:23:39,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 18:23:39,778 INFO L82 PathProgramCache]: Analyzing trace with hash 980522090, now seen corresponding path program 1 times [2021-06-05 18:23:39,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 18:23:39,778 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484378026] [2021-06-05 18:23:39,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 18:23:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 18:23:39,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 18:23:39,815 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 18:23:39,815 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484378026] [2021-06-05 18:23:39,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484378026] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 18:23:39,816 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 18:23:39,816 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 18:23:39,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873056236] [2021-06-05 18:23:39,816 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 18:23:39,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 18:23:39,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 18:23:39,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 18:23:39,817 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) [2021-06-05 18:23:39,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 18:23:39,965 INFO L93 Difference]: Finished difference Result 23659 states and 83402 transitions. [2021-06-05 18:23:39,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 18:23:39,965 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 [2021-06-05 18:23:39,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 18:23:40,001 INFO L225 Difference]: With dead ends: 23659 [2021-06-05 18:23:40,001 INFO L226 Difference]: Without dead ends: 17229 [2021-06-05 18:23:40,001 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.4ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-06-05 18:23:40,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17229 states. [2021-06-05 18:23:40,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17229 to 13563. [2021-06-05 18:23:40,439 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) [2021-06-05 18:23:40,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13563 states to 13563 states and 48486 transitions. [2021-06-05 18:23:40,473 INFO L78 Accepts]: Start accepts. Automaton has 13563 states and 48486 transitions. Word has length 53 [2021-06-05 18:23:40,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 18:23:40,474 INFO L482 AbstractCegarLoop]: Abstraction has 13563 states and 48486 transitions. [2021-06-05 18:23:40,474 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) [2021-06-05 18:23:40,474 INFO L276 IsEmpty]: Start isEmpty. Operand 13563 states and 48486 transitions. [2021-06-05 18:23:40,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-05 18:23:40,486 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 18:23:40,486 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] [2021-06-05 18:23:40,486 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 18:23:40,487 INFO L430 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 18:23:40,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 18:23:40,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1901331, now seen corresponding path program 1 times [2021-06-05 18:23:40,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 18:23:40,487 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97702015] [2021-06-05 18:23:40,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 18:23:40,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 18:23:40,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 18:23:40,581 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 18:23:40,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97702015] [2021-06-05 18:23:40,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97702015] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 18:23:40,581 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 18:23:40,581 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 18:23:40,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218975532] [2021-06-05 18:23:40,582 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 18:23:40,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 18:23:40,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 18:23:40,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-05 18:23:40,583 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) [2021-06-05 18:23:40,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 18:23:40,667 INFO L93 Difference]: Finished difference Result 15627 states and 55450 transitions. [2021-06-05 18:23:40,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 18:23:40,668 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 [2021-06-05 18:23:40,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 18:23:40,690 INFO L225 Difference]: With dead ends: 15627 [2021-06-05 18:23:40,691 INFO L226 Difference]: Without dead ends: 11235 [2021-06-05 18:23:40,691 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.6ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-05 18:23:40,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11235 states. [2021-06-05 18:23:40,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11235 to 10323. [2021-06-05 18:23:40,853 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) [2021-06-05 18:23:40,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10323 states to 10323 states and 36534 transitions. [2021-06-05 18:23:40,879 INFO L78 Accepts]: Start accepts. Automaton has 10323 states and 36534 transitions. Word has length 60 [2021-06-05 18:23:40,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 18:23:40,880 INFO L482 AbstractCegarLoop]: Abstraction has 10323 states and 36534 transitions. [2021-06-05 18:23:40,880 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) [2021-06-05 18:23:40,880 INFO L276 IsEmpty]: Start isEmpty. Operand 10323 states and 36534 transitions. [2021-06-05 18:23:40,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-05 18:23:40,887 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 18:23:40,887 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] [2021-06-05 18:23:40,888 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 18:23:40,888 INFO L430 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 18:23:40,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 18:23:40,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1359958325, now seen corresponding path program 2 times [2021-06-05 18:23:40,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 18:23:40,888 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136598880] [2021-06-05 18:23:40,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 18:23:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 18:23:40,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 18:23:40,957 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 18:23:40,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136598880] [2021-06-05 18:23:40,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136598880] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 18:23:40,958 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 18:23:40,958 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 18:23:40,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178216710] [2021-06-05 18:23:40,959 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 18:23:40,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 18:23:40,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 18:23:40,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 18:23:40,959 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) [2021-06-05 18:23:40,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 18:23:40,986 INFO L93 Difference]: Finished difference Result 4977 states and 16629 transitions. [2021-06-05 18:23:40,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 18:23:40,987 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 [2021-06-05 18:23:40,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 18:23:40,987 INFO L225 Difference]: With dead ends: 4977 [2021-06-05 18:23:40,987 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 18:23:40,987 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 18:23:40,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 18:23:40,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 18:23:40,988 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) [2021-06-05 18:23:40,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 18:23:40,988 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2021-06-05 18:23:40,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 18:23:40,988 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 18:23:40,988 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) [2021-06-05 18:23:40,988 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 18:23:40,988 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 18:23:40,988 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 18:23:40,988 INFO L301 ceAbstractionStarter]: Result for error location readerThread1of1ForFork0 was SAFE (2/4) [2021-06-05 18:23:40,989 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 18:23:40,990 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 18:23:40,990 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 18:23:40,990 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 18:23:40,990 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 18:23:40,990 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 18:23:40,990 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 18:23:40,990 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 18:23:40,990 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == readerThread1of1ForFork3======== [2021-06-05 18:23:40,991 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 119 places, 120 transitions, 308 flow [2021-06-05 18:23:45,212 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) [2021-06-05 18:23:45,280 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) [2021-06-05 18:23:45,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 18:23:45,289 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 18:23:45,289 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] [2021-06-05 18:23:45,289 INFO L430 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 18:23:45,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 18:23:45,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1856661830, now seen corresponding path program 1 times [2021-06-05 18:23:45,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 18:23:45,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735987450] [2021-06-05 18:23:45,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 18:23:45,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 18:23:45,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 18:23:45,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 18:23:45,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735987450] [2021-06-05 18:23:45,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735987450] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 18:23:45,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 18:23:45,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 18:23:45,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122876213] [2021-06-05 18:23:45,327 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 18:23:45,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 18:23:45,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 18:23:45,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 18:23:45,395 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) [2021-06-05 18:23:46,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 18:23:46,222 INFO L93 Difference]: Finished difference Result 125594 states and 505332 transitions. [2021-06-05 18:23:46,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 18:23:46,233 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 [2021-06-05 18:23:46,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 18:23:46,726 INFO L225 Difference]: With dead ends: 125594 [2021-06-05 18:23:46,726 INFO L226 Difference]: Without dead ends: 53634 [2021-06-05 18:23:46,726 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 52.0ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-06-05 18:23:46,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53634 states. [2021-06-05 18:23:47,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53634 to 42117. [2021-06-05 18:23:47,864 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) [2021-06-05 18:23:47,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42117 states to 42117 states and 168489 transitions. [2021-06-05 18:23:47,982 INFO L78 Accepts]: Start accepts. Automaton has 42117 states and 168489 transitions. Word has length 48 [2021-06-05 18:23:47,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 18:23:47,982 INFO L482 AbstractCegarLoop]: Abstraction has 42117 states and 168489 transitions. [2021-06-05 18:23:47,982 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) [2021-06-05 18:23:47,982 INFO L276 IsEmpty]: Start isEmpty. Operand 42117 states and 168489 transitions. [2021-06-05 18:23:47,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-06-05 18:23:47,997 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 18:23:47,998 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] [2021-06-05 18:23:47,998 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 18:23:47,998 INFO L430 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 18:23:47,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 18:23:47,998 INFO L82 PathProgramCache]: Analyzing trace with hash 333335531, now seen corresponding path program 1 times [2021-06-05 18:23:47,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 18:23:47,998 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616962751] [2021-06-05 18:23:47,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 18:23:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 18:23:48,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 18:23:48,028 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 18:23:48,028 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616962751] [2021-06-05 18:23:48,028 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616962751] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 18:23:48,028 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 18:23:48,028 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 18:23:48,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61645430] [2021-06-05 18:23:48,028 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 18:23:48,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 18:23:48,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 18:23:48,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 18:23:48,029 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) [2021-06-05 18:23:48,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 18:23:48,196 INFO L93 Difference]: Finished difference Result 39219 states and 150733 transitions. [2021-06-05 18:23:48,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 18:23:48,197 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 [2021-06-05 18:23:48,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 18:23:48,293 INFO L225 Difference]: With dead ends: 39219 [2021-06-05 18:23:48,293 INFO L226 Difference]: Without dead ends: 38013 [2021-06-05 18:23:48,294 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 18:23:48,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38013 states. [2021-06-05 18:23:49,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38013 to 38013. [2021-06-05 18:23:49,217 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) [2021-06-05 18:23:49,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38013 states to 38013 states and 146071 transitions. [2021-06-05 18:23:49,316 INFO L78 Accepts]: Start accepts. Automaton has 38013 states and 146071 transitions. Word has length 51 [2021-06-05 18:23:49,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 18:23:49,317 INFO L482 AbstractCegarLoop]: Abstraction has 38013 states and 146071 transitions. [2021-06-05 18:23:49,317 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) [2021-06-05 18:23:49,317 INFO L276 IsEmpty]: Start isEmpty. Operand 38013 states and 146071 transitions. [2021-06-05 18:23:49,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-06-05 18:23:49,330 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 18:23:49,330 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] [2021-06-05 18:23:49,330 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 18:23:49,330 INFO L430 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 18:23:49,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 18:23:49,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1396420791, now seen corresponding path program 2 times [2021-06-05 18:23:49,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 18:23:49,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306200174] [2021-06-05 18:23:49,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 18:23:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 18:23:49,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 18:23:49,378 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 18:23:49,378 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306200174] [2021-06-05 18:23:49,378 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306200174] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 18:23:49,378 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 18:23:49,378 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 18:23:49,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765688382] [2021-06-05 18:23:49,378 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 18:23:49,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 18:23:49,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 18:23:49,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 18:23:49,379 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) [2021-06-05 18:23:49,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 18:23:49,866 INFO L93 Difference]: Finished difference Result 48651 states and 182114 transitions. [2021-06-05 18:23:49,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 18:23:49,867 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 [2021-06-05 18:23:49,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 18:23:49,973 INFO L225 Difference]: With dead ends: 48651 [2021-06-05 18:23:49,974 INFO L226 Difference]: Without dead ends: 46245 [2021-06-05 18:23:49,974 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 18:23:50,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46245 states. [2021-06-05 18:23:50,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46245 to 35241. [2021-06-05 18:23:50,854 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) [2021-06-05 18:23:50,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35241 states to 35241 states and 134474 transitions. [2021-06-05 18:23:50,957 INFO L78 Accepts]: Start accepts. Automaton has 35241 states and 134474 transitions. Word has length 51 [2021-06-05 18:23:50,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 18:23:50,957 INFO L482 AbstractCegarLoop]: Abstraction has 35241 states and 134474 transitions. [2021-06-05 18:23:50,958 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) [2021-06-05 18:23:50,958 INFO L276 IsEmpty]: Start isEmpty. Operand 35241 states and 134474 transitions. [2021-06-05 18:23:50,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 18:23:50,971 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 18:23:50,971 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 18:23:50,971 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 18:23:50,971 INFO L430 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 18:23:50,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 18:23:50,972 INFO L82 PathProgramCache]: Analyzing trace with hash -219237236, now seen corresponding path program 1 times [2021-06-05 18:23:50,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 18:23:50,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032193057] [2021-06-05 18:23:50,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 18:23:50,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 18:23:51,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 18:23:51,008 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 18:23:51,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032193057] [2021-06-05 18:23:51,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032193057] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 18:23:51,009 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 18:23:51,009 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 18:23:51,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694095155] [2021-06-05 18:23:51,009 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 18:23:51,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 18:23:51,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 18:23:51,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 18:23:51,010 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) [2021-06-05 18:23:51,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 18:23:51,420 INFO L93 Difference]: Finished difference Result 71416 states and 266999 transitions. [2021-06-05 18:23:51,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 18:23:51,421 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 [2021-06-05 18:23:51,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 18:23:51,925 INFO L225 Difference]: With dead ends: 71416 [2021-06-05 18:23:51,925 INFO L226 Difference]: Without dead ends: 61540 [2021-06-05 18:23:51,925 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.1ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-06-05 18:23:52,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61540 states. [2021-06-05 18:23:52,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61540 to 30530. [2021-06-05 18:23:52,558 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) [2021-06-05 18:23:52,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30530 states to 30530 states and 115729 transitions. [2021-06-05 18:23:52,951 INFO L78 Accepts]: Start accepts. Automaton has 30530 states and 115729 transitions. Word has length 53 [2021-06-05 18:23:52,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 18:23:52,951 INFO L482 AbstractCegarLoop]: Abstraction has 30530 states and 115729 transitions. [2021-06-05 18:23:52,951 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) [2021-06-05 18:23:52,951 INFO L276 IsEmpty]: Start isEmpty. Operand 30530 states and 115729 transitions. [2021-06-05 18:23:52,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-05 18:23:52,980 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 18:23:52,980 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] [2021-06-05 18:23:52,980 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 18:23:52,980 INFO L430 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 18:23:52,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 18:23:52,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1983128374, now seen corresponding path program 1 times [2021-06-05 18:23:52,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 18:23:52,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739429523] [2021-06-05 18:23:52,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 18:23:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 18:23:53,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 18:23:53,012 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 18:23:53,012 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739429523] [2021-06-05 18:23:53,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739429523] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 18:23:53,012 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 18:23:53,012 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 18:23:53,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738148766] [2021-06-05 18:23:53,013 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 18:23:53,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 18:23:53,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 18:23:53,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-05 18:23:53,013 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) [2021-06-05 18:23:53,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 18:23:53,090 INFO L93 Difference]: Finished difference Result 17573 states and 62004 transitions. [2021-06-05 18:23:53,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 18:23:53,091 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 [2021-06-05 18:23:53,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 18:23:53,117 INFO L225 Difference]: With dead ends: 17573 [2021-06-05 18:23:53,117 INFO L226 Difference]: Without dead ends: 12369 [2021-06-05 18:23:53,117 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-05 18:23:53,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12369 states. [2021-06-05 18:23:53,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12369 to 11457. [2021-06-05 18:23:53,277 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) [2021-06-05 18:23:53,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11457 states to 11457 states and 39936 transitions. [2021-06-05 18:23:53,300 INFO L78 Accepts]: Start accepts. Automaton has 11457 states and 39936 transitions. Word has length 54 [2021-06-05 18:23:53,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 18:23:53,300 INFO L482 AbstractCegarLoop]: Abstraction has 11457 states and 39936 transitions. [2021-06-05 18:23:53,301 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) [2021-06-05 18:23:53,301 INFO L276 IsEmpty]: Start isEmpty. Operand 11457 states and 39936 transitions. [2021-06-05 18:23:53,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-05 18:23:53,310 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 18:23:53,310 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] [2021-06-05 18:23:53,310 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-05 18:23:53,310 INFO L430 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 18:23:53,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 18:23:53,310 INFO L82 PathProgramCache]: Analyzing trace with hash -676092975, now seen corresponding path program 1 times [2021-06-05 18:23:53,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 18:23:53,310 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456037700] [2021-06-05 18:23:53,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 18:23:53,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 18:23:53,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 18:23:53,341 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 18:23:53,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456037700] [2021-06-05 18:23:53,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456037700] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 18:23:53,341 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 18:23:53,341 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 18:23:53,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676563308] [2021-06-05 18:23:53,341 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 18:23:53,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 18:23:53,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 18:23:53,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 18:23:53,342 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) [2021-06-05 18:23:53,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 18:23:53,370 INFO L93 Difference]: Finished difference Result 6111 states and 20031 transitions. [2021-06-05 18:23:53,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 18:23:53,370 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 [2021-06-05 18:23:53,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 18:23:53,370 INFO L225 Difference]: With dead ends: 6111 [2021-06-05 18:23:53,370 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 18:23:53,370 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 18:23:53,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 18:23:53,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 18:23:53,371 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) [2021-06-05 18:23:53,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 18:23:53,371 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2021-06-05 18:23:53,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 18:23:53,371 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 18:23:53,371 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) [2021-06-05 18:23:53,371 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 18:23:53,371 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 18:23:53,371 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-05 18:23:53,371 INFO L301 ceAbstractionStarter]: Result for error location readerThread1of1ForFork3 was SAFE (3/4) [2021-06-05 18:23:53,371 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 18:23:53,372 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 18:23:53,372 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 18:23:53,372 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 18:23:53,372 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 18:23:53,372 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 18:23:53,372 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 18:23:53,372 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 18:23:53,372 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-05 18:23:53,373 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 119 places, 120 transitions, 308 flow [2021-06-05 18:23:57,901 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) [2021-06-05 18:23:57,972 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) [2021-06-05 18:23:58,105 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 18:23:58,106 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (4/4) [2021-06-05 18:23:58,106 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 18:23:58,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 06:23:58 BasicIcfg [2021-06-05 18:23:58,108 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 18:23:58,109 INFO L168 Benchmark]: Toolchain (without parser) took 34821.15 ms. Allocated memory was 350.2 MB in the beginning and 13.0 GB in the end (delta: 12.6 GB). Free memory was 312.9 MB in the beginning and 9.8 GB in the end (delta: -9.4 GB). Peak memory consumption was 3.2 GB. Max. memory is 16.0 GB. [2021-06-05 18:23:58,109 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 350.2 MB. Free memory was 330.8 MB in the beginning and 330.7 MB in the end (delta: 125.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 18:23:58,109 INFO L168 Benchmark]: CACSL2BoogieTranslator took 381.86 ms. Allocated memory is still 350.2 MB. Free memory was 312.7 MB in the beginning and 312.9 MB in the end (delta: -220.9 kB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. [2021-06-05 18:23:58,109 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.45 ms. Allocated memory is still 350.2 MB. Free memory was 312.9 MB in the beginning and 310.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 18:23:58,110 INFO L168 Benchmark]: Boogie Preprocessor took 27.67 ms. Allocated memory is still 350.2 MB. Free memory was 310.8 MB in the beginning and 309.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 18:23:58,110 INFO L168 Benchmark]: RCFGBuilder took 530.40 ms. Allocated memory is still 350.2 MB. Free memory was 309.8 MB in the beginning and 274.1 MB in the end (delta: 35.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.0 GB. [2021-06-05 18:23:58,110 INFO L168 Benchmark]: TraceAbstraction took 33817.09 ms. Allocated memory was 350.2 MB in the beginning and 13.0 GB in the end (delta: 12.6 GB). Free memory was 274.1 MB in the beginning and 9.8 GB in the end (delta: -9.5 GB). Peak memory consumption was 3.2 GB. Max. memory is 16.0 GB. [2021-06-05 18:23:58,111 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 350.2 MB. Free memory was 330.8 MB in the beginning and 330.7 MB in the end (delta: 125.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 381.86 ms. Allocated memory is still 350.2 MB. Free memory was 312.7 MB in the beginning and 312.9 MB in the end (delta: -220.9 kB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 51.45 ms. Allocated memory is still 350.2 MB. Free memory was 312.9 MB in the beginning and 310.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 27.67 ms. Allocated memory is still 350.2 MB. Free memory was 310.8 MB in the beginning and 309.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 530.40 ms. Allocated memory is still 350.2 MB. Free memory was 309.8 MB in the beginning and 274.1 MB in the end (delta: 35.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 33817.09 ms. Allocated memory was 350.2 MB in the beginning and 13.0 GB in the end (delta: 12.6 GB). Free memory was 274.1 MB in the beginning and 9.8 GB in the end (delta: -9.5 GB). Peak memory consumption was 3.2 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: 4790.9ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 465.3ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4322.7ms, 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: 11737.0ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 108.0ms, AutomataDifference: 2595.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3943.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1097 SDtfs, 1016 SDslu, 2198 SDs, 0 SdLazy, 260 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 152.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 110.3ms 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: 4361.8ms AutomataMinimizationTime, 6 MinimizatonAttempts, 19242 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 28.4ms SsaConstructionTime, 110.0ms SatisfiabilityAnalysisTime, 333.8ms 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: 12381.5ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 155.5ms, AutomataDifference: 3309.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4221.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1083 SDtfs, 1145 SDslu, 2139 SDs, 0 SdLazy, 283 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 380.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 113.3ms 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: 4469.7ms AutomataMinimizationTime, 6 MinimizatonAttempts, 54443 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.0ms SsaConstructionTime, 28.1ms SatisfiabilityAnalysisTime, 161.3ms 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: 4733.9ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 204.1ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4529.2ms, 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...