/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-dev-29289db [2021-06-04 21:47:24,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-04 21:47:24,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-04 21:47:24,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-04 21:47:24,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-04 21:47:24,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-04 21:47:24,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-04 21:47:24,819 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 [2021-06-04 21:47:24,834 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-04 21:47:24,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-04 21:47:24,834 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-04 21:47:24,834 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-04 21:47:24,835 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-04 21:47:24,835 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-04 21:47:24,835 INFO L138 SettingsManager]: * Use SBE=true [2021-06-04 21:47:24,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-04 21:47:24,835 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-04 21:47:24,835 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-04 21:47:24,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-04 21:47:24,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-04 21:47:24,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-04 21:47:24,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-04 21:47:24,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-04 21:47:24,836 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-04 21:47:24,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-04 21:47:24,836 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-04 21:47:24,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-04 21:47:24,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-04 21:47:24,837 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-04 21:47:24,837 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-04 21:47:24,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-04 21:47:24,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-04 21:47:24,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-04 21:47:24,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-04 21:47:24,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-04 21:47:24,838 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-04 21:47:24,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-04 21:47:24,838 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-04 21:47:24,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-04 21:47:24,838 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-04 21:47:25,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-04 21:47:25,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-04 21:47:25,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-04 21:47:25,069 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-04 21:47:25,069 INFO L275 PluginConnector]: CDTParser initialized [2021-06-04 21:47:25,070 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2021-06-04 21:47:25,114 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cb47d893/8037e9c4d1aa4d0fbcbd4c8d667adb25/FLAG2712f3dd0 [2021-06-04 21:47:25,616 INFO L306 CDTParser]: Found 1 translation units. [2021-06-04 21:47:25,616 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2021-06-04 21:47:25,631 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cb47d893/8037e9c4d1aa4d0fbcbd4c8d667adb25/FLAG2712f3dd0 [2021-06-04 21:47:26,139 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cb47d893/8037e9c4d1aa4d0fbcbd4c8d667adb25 [2021-06-04 21:47:26,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-04 21:47:26,143 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-04 21:47:26,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-04 21:47:26,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-04 21:47:26,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-04 21:47:26,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 09:47:26" (1/1) ... [2021-06-04 21:47:26,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e5cd97f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 09:47:26, skipping insertion in model container [2021-06-04 21:47:26,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 09:47:26" (1/1) ... [2021-06-04 21:47:26,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-04 21:47:26,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-04 21:47:26,308 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-06-04 21:47:26,444 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] [2021-06-04 21:47:26,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-04 21:47:26,453 INFO L203 MainTranslator]: Completed pre-run [2021-06-04 21:47:26,461 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-06-04 21:47:26,472 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] [2021-06-04 21:47:26,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-04 21:47:26,517 INFO L208 MainTranslator]: Completed translation [2021-06-04 21:47:26,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 09:47:26 WrapperNode [2021-06-04 21:47:26,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-04 21:47:26,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-04 21:47:26,519 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-04 21:47:26,519 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-04 21:47:26,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 09:47:26" (1/1) ... [2021-06-04 21:47:26,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 09:47:26" (1/1) ... [2021-06-04 21:47:26,568 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-04 21:47:26,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-04 21:47:26,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-04 21:47:26,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-04 21:47:26,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 09:47:26" (1/1) ... [2021-06-04 21:47:26,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 09:47:26" (1/1) ... [2021-06-04 21:47:26,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 09:47:26" (1/1) ... [2021-06-04 21:47:26,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 09:47:26" (1/1) ... [2021-06-04 21:47:26,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 09:47:26" (1/1) ... [2021-06-04 21:47:26,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 09:47:26" (1/1) ... [2021-06-04 21:47:26,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 09:47:26" (1/1) ... [2021-06-04 21:47:26,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-04 21:47:26,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-04 21:47:26,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-04 21:47:26,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-04 21:47:26,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 09:47:26" (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 [2021-06-04 21:47:26,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-04 21:47:26,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-04 21:47:26,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-04 21:47:26,650 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2021-06-04 21:47:26,650 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2021-06-04 21:47:26,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-04 21:47:26,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-04 21:47:26,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-04 21:47:26,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-04 21:47:26,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-04 21:47:26,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-04 21:47:26,651 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2021-06-04 21:47:26,651 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2021-06-04 21:47:26,652 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-04 21:47:27,038 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-04 21:47:27,038 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-06-04 21:47:27,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 09:47:27 BoogieIcfgContainer [2021-06-04 21:47:27,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-04 21:47:27,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-04 21:47:27,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-04 21:47:27,043 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-04 21:47:27,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 09:47:26" (1/3) ... [2021-06-04 21:47:27,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2378a154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 09:47:27, skipping insertion in model container [2021-06-04 21:47:27,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 09:47:26" (2/3) ... [2021-06-04 21:47:27,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2378a154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 09:47:27, skipping insertion in model container [2021-06-04 21:47:27,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 09:47:27" (3/3) ... [2021-06-04 21:47:27,044 INFO L111 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2021-06-04 21:47:27,048 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-04 21:47:27,048 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-04 21:47:27,069 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-04 21:47:27,069 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-04 21:47:27,115 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,115 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,116 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,116 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,116 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,116 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,116 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,116 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,116 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,116 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,117 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,117 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,117 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,117 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,117 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,117 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,117 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,117 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,118 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,118 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,118 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,118 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,118 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,118 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,118 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,118 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,118 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,119 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,119 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,119 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,119 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,119 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,119 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,119 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,120 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,120 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,120 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,120 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,120 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,120 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,120 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,120 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,120 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,121 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,121 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,121 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,121 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,121 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,121 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,121 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,121 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,121 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,122 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,122 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,122 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,122 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,122 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,122 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,122 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,122 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,122 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,123 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,123 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,123 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,123 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,123 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,123 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,123 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,124 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,124 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,124 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,124 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,124 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,124 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,124 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,124 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,124 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,124 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,125 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,125 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,125 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,125 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,125 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,125 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,126 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,126 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,126 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,126 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,126 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,126 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,126 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,126 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,126 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,126 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,127 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,127 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,127 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,127 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,127 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,127 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,145 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,145 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,145 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,145 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,146 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,146 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,146 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,146 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,146 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,152 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,153 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,153 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,153 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,153 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,153 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,155 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,155 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,155 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,155 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,155 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,155 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,157 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,157 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,157 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,157 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,157 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,157 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,157 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,157 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,158 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-04 21:47:27,178 INFO L149 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2021-06-04 21:47:27,192 INFO L255 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-06-04 21:47:27,203 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-04 21:47:27,203 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-04 21:47:27,203 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-04 21:47:27,203 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-04 21:47:27,203 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-04 21:47:27,203 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-04 21:47:27,204 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-04 21:47:27,204 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-04 21:47:27,210 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 119 places, 120 transitions, 308 flow [2021-06-04 21:47:31,414 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) [2021-06-04 21:47:31,484 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) [2021-06-04 21:47:31,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-04 21:47:31,584 INFO L513 BasicCegarLoop]: Found error trace [2021-06-04 21:47:31,584 INFO L521 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] [2021-06-04 21:47:31,585 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-04 21:47:31,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-04 21:47:31,593 INFO L82 PathProgramCache]: Analyzing trace with hash -576272667, now seen corresponding path program 1 times [2021-06-04 21:47:31,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-04 21:47:31,606 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198949391] [2021-06-04 21:47:31,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-04 21:47:31,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:47:31,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-04 21:47:31,846 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-04 21:47:31,846 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198949391] [2021-06-04 21:47:31,846 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198949391] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-04 21:47:31,847 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-04 21:47:31,847 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-04 21:47:31,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174831502] [2021-06-04 21:47:31,850 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-04 21:47:31,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-04 21:47:31,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-04 21:47:31,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-04 21:47:31,939 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) [2021-06-04 21:47:33,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-04 21:47:33,248 INFO L93 Difference]: Finished difference Result 127826 states and 513006 transitions. [2021-06-04 21:47:33,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-04 21:47:33,250 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 [2021-06-04 21:47:33,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-04 21:47:33,935 INFO L225 Difference]: With dead ends: 127826 [2021-06-04 21:47:33,935 INFO L226 Difference]: Without dead ends: 99460 [2021-06-04 21:47:33,936 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 90.2ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-06-04 21:47:34,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99460 states. [2021-06-04 21:47:36,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99460 to 61503. [2021-06-04 21:47:36,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61503 states, 61500 states have (on average 4.0689268292682925) internal successors, (250239), 61502 states have internal predecessors, (250239), 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) [2021-06-04 21:47:36,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61503 states to 61503 states and 250239 transitions. [2021-06-04 21:47:36,583 INFO L78 Accepts]: Start accepts. Automaton has 61503 states and 250239 transitions. Word has length 36 [2021-06-04 21:47:36,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-04 21:47:36,584 INFO L482 AbstractCegarLoop]: Abstraction has 61503 states and 250239 transitions. [2021-06-04 21:47:36,584 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) [2021-06-04 21:47:36,584 INFO L276 IsEmpty]: Start isEmpty. Operand 61503 states and 250239 transitions. [2021-06-04 21:47:36,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-04 21:47:36,592 INFO L513 BasicCegarLoop]: Found error trace [2021-06-04 21:47:36,592 INFO L521 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] [2021-06-04 21:47:36,592 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-04 21:47:36,592 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-04 21:47:36,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-04 21:47:36,593 INFO L82 PathProgramCache]: Analyzing trace with hash -961474224, now seen corresponding path program 1 times [2021-06-04 21:47:36,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-04 21:47:36,593 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328339843] [2021-06-04 21:47:36,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-04 21:47:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:47:36,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-04 21:47:36,667 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-04 21:47:36,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328339843] [2021-06-04 21:47:36,667 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328339843] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-04 21:47:36,667 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-04 21:47:36,667 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-04 21:47:36,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756915829] [2021-06-04 21:47:36,668 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-04 21:47:36,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-04 21:47:36,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-04 21:47:36,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-04 21:47:36,669 INFO L87 Difference]: Start difference. First operand 61503 states and 250239 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) [2021-06-04 21:47:36,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-04 21:47:36,984 INFO L93 Difference]: Finished difference Result 57411 states and 225043 transitions. [2021-06-04 21:47:36,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-04 21:47:36,985 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 [2021-06-04 21:47:36,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-04 21:47:37,432 INFO L225 Difference]: With dead ends: 57411 [2021-06-04 21:47:37,432 INFO L226 Difference]: Without dead ends: 56979 [2021-06-04 21:47:37,448 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-04 21:47:37,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56979 states. [2021-06-04 21:47:38,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56979 to 56979. [2021-06-04 21:47:38,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56979 states, 56976 states have (on average 3.9204050828418984) internal successors, (223369), 56978 states have internal predecessors, (223369), 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) [2021-06-04 21:47:39,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56979 states to 56979 states and 223369 transitions. [2021-06-04 21:47:39,535 INFO L78 Accepts]: Start accepts. Automaton has 56979 states and 223369 transitions. Word has length 39 [2021-06-04 21:47:39,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-04 21:47:39,536 INFO L482 AbstractCegarLoop]: Abstraction has 56979 states and 223369 transitions. [2021-06-04 21:47:39,536 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) [2021-06-04 21:47:39,536 INFO L276 IsEmpty]: Start isEmpty. Operand 56979 states and 223369 transitions. [2021-06-04 21:47:39,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-04 21:47:39,538 INFO L513 BasicCegarLoop]: Found error trace [2021-06-04 21:47:39,538 INFO L521 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] [2021-06-04 21:47:39,538 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-04 21:47:39,538 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-04 21:47:39,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-04 21:47:39,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1809459636, now seen corresponding path program 2 times [2021-06-04 21:47:39,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-04 21:47:39,539 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391374627] [2021-06-04 21:47:39,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-04 21:47:39,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:47:39,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-04 21:47:39,587 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-04 21:47:39,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391374627] [2021-06-04 21:47:39,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391374627] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-04 21:47:39,587 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-04 21:47:39,587 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-04 21:47:39,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110533875] [2021-06-04 21:47:39,587 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-04 21:47:39,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-04 21:47:39,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-04 21:47:39,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-04 21:47:39,588 INFO L87 Difference]: Start difference. First operand 56979 states and 223369 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) [2021-06-04 21:47:39,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-04 21:47:39,821 INFO L93 Difference]: Finished difference Result 49981 states and 181590 transitions. [2021-06-04 21:47:39,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-04 21:47:39,822 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 [2021-06-04 21:47:39,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-04 21:47:39,938 INFO L225 Difference]: With dead ends: 49981 [2021-06-04 21:47:39,938 INFO L226 Difference]: Without dead ends: 48025 [2021-06-04 21:47:39,938 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.7ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-04 21:47:40,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48025 states. [2021-06-04 21:47:40,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48025 to 39397. [2021-06-04 21:47:40,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39397 states, 39389 states have (on average 3.673792175480464) internal successors, (144707), 39396 states have internal predecessors, (144707), 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) [2021-06-04 21:47:41,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39397 states to 39397 states and 144707 transitions. [2021-06-04 21:47:41,216 INFO L78 Accepts]: Start accepts. Automaton has 39397 states and 144707 transitions. Word has length 39 [2021-06-04 21:47:41,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-04 21:47:41,217 INFO L482 AbstractCegarLoop]: Abstraction has 39397 states and 144707 transitions. [2021-06-04 21:47:41,217 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) [2021-06-04 21:47:41,217 INFO L276 IsEmpty]: Start isEmpty. Operand 39397 states and 144707 transitions. [2021-06-04 21:47:41,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-04 21:47:41,238 INFO L513 BasicCegarLoop]: Found error trace [2021-06-04 21:47:41,238 INFO L521 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] [2021-06-04 21:47:41,238 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-04 21:47:41,238 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-04 21:47:41,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-04 21:47:41,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1856661830, now seen corresponding path program 1 times [2021-06-04 21:47:41,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-04 21:47:41,239 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999867238] [2021-06-04 21:47:41,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-04 21:47:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:47:41,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-04 21:47:41,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-04 21:47:41,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999867238] [2021-06-04 21:47:41,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999867238] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-04 21:47:41,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-04 21:47:41,287 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-04 21:47:41,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182608518] [2021-06-04 21:47:41,287 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-04 21:47:41,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-04 21:47:41,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-04 21:47:41,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-04 21:47:41,288 INFO L87 Difference]: Start difference. First operand 39397 states and 144707 transitions. 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) [2021-06-04 21:47:41,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-04 21:47:41,633 INFO L93 Difference]: Finished difference Result 52531 states and 189254 transitions. [2021-06-04 21:47:41,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-04 21:47:41,633 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 [2021-06-04 21:47:41,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-04 21:47:41,722 INFO L225 Difference]: With dead ends: 52531 [2021-06-04 21:47:41,722 INFO L226 Difference]: Without dead ends: 41496 [2021-06-04 21:47:41,723 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 75.9ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-06-04 21:47:41,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41496 states. [2021-06-04 21:47:42,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41496 to 32138. [2021-06-04 21:47:42,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32138 states, 32136 states have (on average 3.6329350261389095) internal successors, (116748), 32137 states have internal predecessors, (116748), 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) [2021-06-04 21:47:42,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32138 states to 32138 states and 116748 transitions. [2021-06-04 21:47:42,607 INFO L78 Accepts]: Start accepts. Automaton has 32138 states and 116748 transitions. Word has length 48 [2021-06-04 21:47:42,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-04 21:47:42,608 INFO L482 AbstractCegarLoop]: Abstraction has 32138 states and 116748 transitions. [2021-06-04 21:47:42,608 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) [2021-06-04 21:47:42,608 INFO L276 IsEmpty]: Start isEmpty. Operand 32138 states and 116748 transitions. [2021-06-04 21:47:42,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-04 21:47:42,623 INFO L513 BasicCegarLoop]: Found error trace [2021-06-04 21:47:42,623 INFO L521 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] [2021-06-04 21:47:42,623 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-04 21:47:42,623 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-04 21:47:42,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-04 21:47:42,623 INFO L82 PathProgramCache]: Analyzing trace with hash 980522090, now seen corresponding path program 1 times [2021-06-04 21:47:42,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-04 21:47:42,624 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908723702] [2021-06-04 21:47:42,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-04 21:47:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:47:42,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-04 21:47:42,691 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-04 21:47:42,691 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908723702] [2021-06-04 21:47:42,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908723702] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-04 21:47:42,692 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-04 21:47:42,692 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-04 21:47:42,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801625914] [2021-06-04 21:47:42,692 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-04 21:47:42,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-04 21:47:42,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-04 21:47:42,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-04 21:47:42,693 INFO L87 Difference]: Start difference. First operand 32138 states and 116748 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) [2021-06-04 21:47:43,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-04 21:47:43,018 INFO L93 Difference]: Finished difference Result 39805 states and 141873 transitions. [2021-06-04 21:47:43,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-04 21:47:43,018 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 [2021-06-04 21:47:43,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-04 21:47:43,103 INFO L225 Difference]: With dead ends: 39805 [2021-06-04 21:47:43,104 INFO L226 Difference]: Without dead ends: 36776 [2021-06-04 21:47:43,104 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 70.4ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-04 21:47:43,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36776 states. [2021-06-04 21:47:43,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36776 to 28615. [2021-06-04 21:47:43,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28615 states, 28613 states have (on average 3.6183902421976026) internal successors, (103533), 28614 states have internal predecessors, (103533), 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) [2021-06-04 21:47:43,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28615 states to 28615 states and 103533 transitions. [2021-06-04 21:47:43,931 INFO L78 Accepts]: Start accepts. Automaton has 28615 states and 103533 transitions. Word has length 53 [2021-06-04 21:47:43,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-04 21:47:43,931 INFO L482 AbstractCegarLoop]: Abstraction has 28615 states and 103533 transitions. [2021-06-04 21:47:43,931 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) [2021-06-04 21:47:43,932 INFO L276 IsEmpty]: Start isEmpty. Operand 28615 states and 103533 transitions. [2021-06-04 21:47:43,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-04 21:47:43,944 INFO L513 BasicCegarLoop]: Found error trace [2021-06-04 21:47:43,944 INFO L521 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] [2021-06-04 21:47:43,945 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-04 21:47:43,945 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-04 21:47:43,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-04 21:47:43,945 INFO L82 PathProgramCache]: Analyzing trace with hash -219237236, now seen corresponding path program 1 times [2021-06-04 21:47:43,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-04 21:47:43,945 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424316560] [2021-06-04 21:47:43,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-04 21:47:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:47:43,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-04 21:47:43,978 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-04 21:47:43,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424316560] [2021-06-04 21:47:43,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424316560] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-04 21:47:43,978 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-04 21:47:43,978 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-04 21:47:43,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884025572] [2021-06-04 21:47:43,978 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-04 21:47:43,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-04 21:47:43,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-04 21:47:43,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-04 21:47:43,979 INFO L87 Difference]: Start difference. First operand 28615 states and 103533 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) [2021-06-04 21:47:44,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-04 21:47:44,191 INFO L93 Difference]: Finished difference Result 34167 states and 121407 transitions. [2021-06-04 21:47:44,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-04 21:47:44,192 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 [2021-06-04 21:47:44,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-04 21:47:44,253 INFO L225 Difference]: With dead ends: 34167 [2021-06-04 21:47:44,253 INFO L226 Difference]: Without dead ends: 28741 [2021-06-04 21:47:44,253 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 36.0ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-04 21:47:44,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28741 states. [2021-06-04 21:47:44,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28741 to 22619. [2021-06-04 21:47:44,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22619 states, 22617 states have (on average 3.5937126939912454) internal successors, (81279), 22618 states have internal predecessors, (81279), 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) [2021-06-04 21:47:44,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22619 states to 22619 states and 81279 transitions. [2021-06-04 21:47:44,924 INFO L78 Accepts]: Start accepts. Automaton has 22619 states and 81279 transitions. Word has length 53 [2021-06-04 21:47:44,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-04 21:47:44,925 INFO L482 AbstractCegarLoop]: Abstraction has 22619 states and 81279 transitions. [2021-06-04 21:47:44,925 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) [2021-06-04 21:47:44,925 INFO L276 IsEmpty]: Start isEmpty. Operand 22619 states and 81279 transitions. [2021-06-04 21:47:44,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-04 21:47:44,945 INFO L513 BasicCegarLoop]: Found error trace [2021-06-04 21:47:44,945 INFO L521 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] [2021-06-04 21:47:44,945 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-04 21:47:44,946 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-04 21:47:44,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-04 21:47:44,946 INFO L82 PathProgramCache]: Analyzing trace with hash -676092975, now seen corresponding path program 1 times [2021-06-04 21:47:44,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-04 21:47:44,946 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626644311] [2021-06-04 21:47:44,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-04 21:47:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:47:44,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-04 21:47:44,988 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-04 21:47:44,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626644311] [2021-06-04 21:47:44,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626644311] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-04 21:47:44,989 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-04 21:47:44,990 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-04 21:47:44,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190820049] [2021-06-04 21:47:44,990 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-04 21:47:44,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-04 21:47:44,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-04 21:47:44,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-04 21:47:44,990 INFO L87 Difference]: Start difference. First operand 22619 states and 81279 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) [2021-06-04 21:47:45,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-04 21:47:45,110 INFO L93 Difference]: Finished difference Result 26747 states and 95207 transitions. [2021-06-04 21:47:45,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-04 21:47:45,111 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 [2021-06-04 21:47:45,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-04 21:47:45,157 INFO L225 Difference]: With dead ends: 26747 [2021-06-04 21:47:45,158 INFO L226 Difference]: Without dead ends: 22337 [2021-06-04 21:47:45,158 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-04 21:47:45,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22337 states. [2021-06-04 21:47:45,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22337 to 20513. [2021-06-04 21:47:45,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20513 states, 20511 states have (on average 3.599093169518795) internal successors, (73821), 20512 states have internal predecessors, (73821), 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) [2021-06-04 21:47:45,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20513 states to 20513 states and 73821 transitions. [2021-06-04 21:47:45,719 INFO L78 Accepts]: Start accepts. Automaton has 20513 states and 73821 transitions. Word has length 60 [2021-06-04 21:47:45,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-04 21:47:45,720 INFO L482 AbstractCegarLoop]: Abstraction has 20513 states and 73821 transitions. [2021-06-04 21:47:45,720 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) [2021-06-04 21:47:45,720 INFO L276 IsEmpty]: Start isEmpty. Operand 20513 states and 73821 transitions. [2021-06-04 21:47:45,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-04 21:47:45,737 INFO L513 BasicCegarLoop]: Found error trace [2021-06-04 21:47:45,737 INFO L521 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] [2021-06-04 21:47:45,737 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-04 21:47:45,737 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-04 21:47:45,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-04 21:47:45,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1808408195, now seen corresponding path program 2 times [2021-06-04 21:47:45,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-04 21:47:45,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527726416] [2021-06-04 21:47:45,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-04 21:47:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-04 21:47:45,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-04 21:47:45,782 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-04 21:47:45,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527726416] [2021-06-04 21:47:45,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527726416] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-04 21:47:45,783 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-04 21:47:45,783 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-04 21:47:45,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402340352] [2021-06-04 21:47:45,783 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-04 21:47:45,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-04 21:47:45,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-04 21:47:45,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-06-04 21:47:45,784 INFO L87 Difference]: Start difference. First operand 20513 states and 73821 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 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) [2021-06-04 21:47:45,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-04 21:47:45,843 INFO L93 Difference]: Finished difference Result 9821 states and 34011 transitions. [2021-06-04 21:47:45,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-04 21:47:45,843 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 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 [2021-06-04 21:47:45,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-04 21:47:45,843 INFO L225 Difference]: With dead ends: 9821 [2021-06-04 21:47:45,843 INFO L226 Difference]: Without dead ends: 0 [2021-06-04 21:47:45,844 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 19.5ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-06-04 21:47:45,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-04 21:47:45,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-04 21:47:45,844 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) [2021-06-04 21:47:45,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-04 21:47:45,844 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2021-06-04 21:47:45,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-04 21:47:45,844 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-04 21:47:45,844 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 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) [2021-06-04 21:47:45,844 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-04 21:47:45,844 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-04 21:47:45,845 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-04 21:47:45,846 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-04 21:47:45,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.06 09:47:45 BasicIcfg [2021-06-04 21:47:45,848 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-04 21:47:45,848 INFO L168 Benchmark]: Toolchain (without parser) took 19705.14 ms. Allocated memory was 331.4 MB in the beginning and 12.2 GB in the end (delta: 11.8 GB). Free memory was 294.6 MB in the beginning and 10.1 GB in the end (delta: -9.8 GB). Peak memory consumption was 2.0 GB. Max. memory is 16.0 GB. [2021-06-04 21:47:45,848 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 331.4 MB. Free memory is still 312.5 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-04 21:47:45,849 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.53 ms. Allocated memory is still 331.4 MB. Free memory was 294.3 MB in the beginning and 293.4 MB in the end (delta: 945.8 kB). Peak memory consumption was 9.4 MB. Max. memory is 16.0 GB. [2021-06-04 21:47:45,849 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.83 ms. Allocated memory is still 331.4 MB. Free memory was 293.4 MB in the beginning and 291.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-04 21:47:45,849 INFO L168 Benchmark]: Boogie Preprocessor took 29.43 ms. Allocated memory is still 331.4 MB. Free memory was 291.9 MB in the beginning and 289.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-04 21:47:45,849 INFO L168 Benchmark]: RCFGBuilder took 441.39 ms. Allocated memory is still 331.4 MB. Free memory was 289.8 MB in the beginning and 256.3 MB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.0 GB. [2021-06-04 21:47:45,850 INFO L168 Benchmark]: TraceAbstraction took 18807.02 ms. Allocated memory was 331.4 MB in the beginning and 12.2 GB in the end (delta: 11.8 GB). Free memory was 255.2 MB in the beginning and 10.1 GB in the end (delta: -9.9 GB). Peak memory consumption was 2.0 GB. Max. memory is 16.0 GB. [2021-06-04 21:47:45,851 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 331.4 MB. Free memory is still 312.5 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 374.53 ms. Allocated memory is still 331.4 MB. Free memory was 294.3 MB in the beginning and 293.4 MB in the end (delta: 945.8 kB). Peak memory consumption was 9.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 48.83 ms. Allocated memory is still 331.4 MB. Free memory was 293.4 MB in the beginning and 291.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.43 ms. Allocated memory is still 331.4 MB. Free memory was 291.9 MB in the beginning and 289.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 441.39 ms. Allocated memory is still 331.4 MB. Free memory was 289.8 MB in the beginning and 256.3 MB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 18807.02 ms. Allocated memory was 331.4 MB in the beginning and 12.2 GB in the end (delta: 11.8 GB). Free memory was 255.2 MB in the beginning and 10.1 GB in the end (delta: -9.9 GB). Peak memory consumption was 2.0 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 with 1 thread instances CFG has 7 procedures, 132 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 18643.2ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 263.1ms, AutomataDifference: 4550.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4210.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1829 SDtfs, 1845 SDslu, 3815 SDs, 0 SdLazy, 514 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 336.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 328.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=61503occurred in iteration=1, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 8946.7ms AutomataMinimizationTime, 8 MinimizatonAttempts, 72050 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 18.7ms SsaConstructionTime, 119.5ms SatisfiabilityAnalysisTime, 371.6ms InterpolantComputationTime, 388 NumberOfCodeBlocks, 388 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 380 ConstructedInterpolants, 0 QuantifiedInterpolants, 690 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...