/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-21 21:34:12,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 21:34:12,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 21:34:12,915 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-21 21:34:12,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-21 21:34:12,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-21 21:34:12,926 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-21 21:34:12,931 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-21 21:34:12,934 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-21 21:34:12,937 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-21 21:34:12,938 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-21 21:34:12,939 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-21 21:34:12,939 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 21:34:12,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 21:34:12,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 21:34:12,947 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 21:34:12,949 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 21:34:12,950 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 21:34:12,952 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 21:34:12,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 21:34:12,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 21:34:12,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 21:34:12,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 21:34:12,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 21:34:12,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-21 21:34:12,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-21 21:34:12,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-21 21:34:12,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-21 21:34:12,988 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-21 21:34:12,992 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-21 21:34:12,992 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-21 21:34:12,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-21 21:34:12,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-21 21:34:12,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 21:34:12,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 21:34:12,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 21:34:13,002 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-21 21:34:13,039 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 21:34:13,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 21:34:13,042 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 21:34:13,042 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 21:34:13,042 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 21:34:13,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 21:34:13,044 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 21:34:13,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 21:34:13,045 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 21:34:13,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 21:34:13,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 21:34:13,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 21:34:13,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 21:34:13,047 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 21:34:13,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 21:34:13,047 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 21:34:13,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 21:34:13,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 21:34:13,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 21:34:13,048 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 21:34:13,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 21:34:13,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 21:34:13,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 21:34:13,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-21 21:34:13,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 21:34:13,049 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 21:34:13,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 21:34:13,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 21:34:13,050 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-21 21:34:13,051 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-21 21:34:13,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 21:34:13,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 21:34:13,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 21:34:13,372 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 21:34:13,372 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 21:34:13,373 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2020-10-21 21:34:13,439 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d883fdacb/2e892e64cec14cc5b35c1a8e5ec8c460/FLAG6b417baa1 [2020-10-21 21:34:13,983 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 21:34:13,984 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2020-10-21 21:34:14,002 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d883fdacb/2e892e64cec14cc5b35c1a8e5ec8c460/FLAG6b417baa1 [2020-10-21 21:34:14,245 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d883fdacb/2e892e64cec14cc5b35c1a8e5ec8c460 [2020-10-21 21:34:14,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 21:34:14,262 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 21:34:14,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 21:34:14,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 21:34:14,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 21:34:14,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 09:34:14" (1/1) ... [2020-10-21 21:34:14,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38e71c55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:34:14, skipping insertion in model container [2020-10-21 21:34:14,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 09:34:14" (1/1) ... [2020-10-21 21:34:14,279 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 21:34:14,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 21:34:14,698 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-21 21:34:14,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 21:34:14,911 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 21:34:14,929 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-21 21:34:14,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 21:34:15,043 INFO L208 MainTranslator]: Completed translation [2020-10-21 21:34:15,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:34:15 WrapperNode [2020-10-21 21:34:15,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 21:34:15,046 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 21:34:15,047 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 21:34:15,047 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 21:34:15,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:34:15" (1/1) ... [2020-10-21 21:34:15,076 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:34:15" (1/1) ... [2020-10-21 21:34:15,102 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 21:34:15,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 21:34:15,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 21:34:15,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 21:34:15,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:34:15" (1/1) ... [2020-10-21 21:34:15,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:34:15" (1/1) ... [2020-10-21 21:34:15,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:34:15" (1/1) ... [2020-10-21 21:34:15,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:34:15" (1/1) ... [2020-10-21 21:34:15,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:34:15" (1/1) ... [2020-10-21 21:34:15,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:34:15" (1/1) ... [2020-10-21 21:34:15,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:34:15" (1/1) ... [2020-10-21 21:34:15,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 21:34:15,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 21:34:15,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 21:34:15,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 21:34:15,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:34:15" (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 [2020-10-21 21:34:15,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-21 21:34:15,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 21:34:15,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-21 21:34:15,202 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2020-10-21 21:34:15,202 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2020-10-21 21:34:15,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 21:34:15,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 21:34:15,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 21:34:15,204 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-21 21:34:15,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 21:34:15,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 21:34:15,205 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2020-10-21 21:34:15,205 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2020-10-21 21:34:15,207 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-21 21:34:15,719 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 21:34:15,719 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-21 21:34:15,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 09:34:15 BoogieIcfgContainer [2020-10-21 21:34:15,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 21:34:15,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 21:34:15,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 21:34:15,728 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 21:34:15,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 09:34:14" (1/3) ... [2020-10-21 21:34:15,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47583a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 09:34:15, skipping insertion in model container [2020-10-21 21:34:15,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:34:15" (2/3) ... [2020-10-21 21:34:15,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47583a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 09:34:15, skipping insertion in model container [2020-10-21 21:34:15,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 09:34:15" (3/3) ... [2020-10-21 21:34:15,732 INFO L111 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2020-10-21 21:34:15,745 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 21:34:15,745 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-21 21:34:15,753 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-21 21:34:15,754 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 21:34:15,786 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,787 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,787 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,787 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,788 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,788 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,788 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,788 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,789 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,789 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,789 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,790 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,790 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,790 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,790 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,791 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,791 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,791 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,791 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,792 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,792 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,792 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,793 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,793 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,793 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,793 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,794 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,794 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,794 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,794 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,795 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,795 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,795 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,795 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,796 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,796 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,796 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,796 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,797 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,797 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,797 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,797 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,798 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,798 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,798 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,798 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,802 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,802 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,803 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,803 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,803 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,803 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,803 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,804 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,804 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,807 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,807 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,808 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,808 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,808 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,808 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,814 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,814 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,815 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,815 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,815 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,815 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,815 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,816 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,816 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,818 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,819 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,819 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,819 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,820 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,820 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:15,846 INFO L149 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2020-10-21 21:34:15,860 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-21 21:34:15,880 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 21:34:15,881 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 21:34:15,881 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-21 21:34:15,881 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 21:34:15,881 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 21:34:15,881 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 21:34:15,881 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 21:34:15,882 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 21:34:15,899 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-21 21:34:15,902 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 112 transitions, 292 flow [2020-10-21 21:34:15,905 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 112 transitions, 292 flow [2020-10-21 21:34:15,907 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 109 places, 112 transitions, 292 flow [2020-10-21 21:34:15,981 INFO L129 PetriNetUnfolder]: 21/146 cut-off events. [2020-10-21 21:34:15,982 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-10-21 21:34:15,993 INFO L80 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 146 events. 21/146 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 355 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 99. Up to 12 conditions per place. [2020-10-21 21:34:16,002 INFO L116 LiptonReduction]: Number of co-enabled transitions 3184 [2020-10-21 21:34:17,883 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-21 21:34:18,067 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-21 21:34:18,561 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 90 [2020-10-21 21:34:18,731 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-21 21:34:18,825 INFO L131 LiptonReduction]: Checked pairs total: 21686 [2020-10-21 21:34:18,826 INFO L133 LiptonReduction]: Total number of compositions: 79 [2020-10-21 21:34:18,856 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 57 transitions, 182 flow [2020-10-21 21:34:19,261 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 4306 states. [2020-10-21 21:34:19,265 INFO L276 IsEmpty]: Start isEmpty. Operand 4306 states. [2020-10-21 21:34:19,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-21 21:34:19,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:34:19,286 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:34:19,287 INFO L429 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 21:34:19,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:34:19,296 INFO L82 PathProgramCache]: Analyzing trace with hash -256763381, now seen corresponding path program 1 times [2020-10-21 21:34:19,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:34:19,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521525830] [2020-10-21 21:34:19,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:34:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:34:19,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:34:19,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521525830] [2020-10-21 21:34:19,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:34:19,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 21:34:19,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72158814] [2020-10-21 21:34:19,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 21:34:19,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:34:19,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 21:34:19,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 21:34:19,669 INFO L87 Difference]: Start difference. First operand 4306 states. Second operand 4 states. [2020-10-21 21:34:19,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:34:19,902 INFO L93 Difference]: Finished difference Result 9727 states and 31398 transitions. [2020-10-21 21:34:19,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 21:34:19,904 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-21 21:34:19,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:34:19,979 INFO L225 Difference]: With dead ends: 9727 [2020-10-21 21:34:19,979 INFO L226 Difference]: Without dead ends: 7325 [2020-10-21 21:34:19,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-21 21:34:20,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7325 states. [2020-10-21 21:34:20,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7325 to 4376. [2020-10-21 21:34:20,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4376 states. [2020-10-21 21:34:20,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 14751 transitions. [2020-10-21 21:34:20,360 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 14751 transitions. Word has length 8 [2020-10-21 21:34:20,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:34:20,361 INFO L481 AbstractCegarLoop]: Abstraction has 4376 states and 14751 transitions. [2020-10-21 21:34:20,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 21:34:20,361 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 14751 transitions. [2020-10-21 21:34:20,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-21 21:34:20,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:34:20,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:34:20,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 21:34:20,364 INFO L429 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 21:34:20,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:34:20,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1936489280, now seen corresponding path program 1 times [2020-10-21 21:34:20,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:34:20,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976587731] [2020-10-21 21:34:20,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:34:20,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:34:20,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:34:20,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976587731] [2020-10-21 21:34:20,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:34:20,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 21:34:20,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474426857] [2020-10-21 21:34:20,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 21:34:20,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:34:20,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 21:34:20,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 21:34:20,427 INFO L87 Difference]: Start difference. First operand 4376 states and 14751 transitions. Second operand 4 states. [2020-10-21 21:34:20,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:34:20,526 INFO L93 Difference]: Finished difference Result 6872 states and 20348 transitions. [2020-10-21 21:34:20,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-21 21:34:20,527 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-21 21:34:20,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:34:20,577 INFO L225 Difference]: With dead ends: 6872 [2020-10-21 21:34:20,577 INFO L226 Difference]: Without dead ends: 6776 [2020-10-21 21:34:20,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 21:34:20,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6776 states. [2020-10-21 21:34:20,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6776 to 4772. [2020-10-21 21:34:20,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4772 states. [2020-10-21 21:34:20,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4772 states to 4772 states and 14625 transitions. [2020-10-21 21:34:20,771 INFO L78 Accepts]: Start accepts. Automaton has 4772 states and 14625 transitions. Word has length 10 [2020-10-21 21:34:20,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:34:20,771 INFO L481 AbstractCegarLoop]: Abstraction has 4772 states and 14625 transitions. [2020-10-21 21:34:20,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 21:34:20,856 INFO L276 IsEmpty]: Start isEmpty. Operand 4772 states and 14625 transitions. [2020-10-21 21:34:20,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-21 21:34:20,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:34:20,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:34:20,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-21 21:34:20,859 INFO L429 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 21:34:20,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:34:20,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1632508856, now seen corresponding path program 2 times [2020-10-21 21:34:20,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:34:20,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438535854] [2020-10-21 21:34:20,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:34:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:34:20,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:34:20,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438535854] [2020-10-21 21:34:20,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:34:20,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 21:34:20,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835650386] [2020-10-21 21:34:20,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 21:34:20,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:34:20,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 21:34:20,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 21:34:20,902 INFO L87 Difference]: Start difference. First operand 4772 states and 14625 transitions. Second operand 3 states. [2020-10-21 21:34:20,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:34:20,946 INFO L93 Difference]: Finished difference Result 2244 states and 5528 transitions. [2020-10-21 21:34:20,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 21:34:20,946 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-21 21:34:20,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:34:20,970 INFO L225 Difference]: With dead ends: 2244 [2020-10-21 21:34:20,971 INFO L226 Difference]: Without dead ends: 2180 [2020-10-21 21:34:20,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 21:34:20,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2180 states. [2020-10-21 21:34:21,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2180 to 2180. [2020-10-21 21:34:21,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2180 states. [2020-10-21 21:34:21,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 5394 transitions. [2020-10-21 21:34:21,039 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 5394 transitions. Word has length 10 [2020-10-21 21:34:21,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:34:21,039 INFO L481 AbstractCegarLoop]: Abstraction has 2180 states and 5394 transitions. [2020-10-21 21:34:21,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 21:34:21,040 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 5394 transitions. [2020-10-21 21:34:21,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 21:34:21,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:34:21,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:34:21,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-21 21:34:21,045 INFO L429 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 21:34:21,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:34:21,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1490641748, now seen corresponding path program 1 times [2020-10-21 21:34:21,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:34:21,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989985958] [2020-10-21 21:34:21,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:34:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:34:21,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:34:21,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989985958] [2020-10-21 21:34:21,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:34:21,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 21:34:21,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489405953] [2020-10-21 21:34:21,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 21:34:21,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:34:21,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 21:34:21,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 21:34:21,139 INFO L87 Difference]: Start difference. First operand 2180 states and 5394 transitions. Second operand 4 states. [2020-10-21 21:34:21,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:34:21,206 INFO L93 Difference]: Finished difference Result 2507 states and 6115 transitions. [2020-10-21 21:34:21,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 21:34:21,207 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-21 21:34:21,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:34:21,212 INFO L225 Difference]: With dead ends: 2507 [2020-10-21 21:34:21,213 INFO L226 Difference]: Without dead ends: 1814 [2020-10-21 21:34:21,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-21 21:34:21,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2020-10-21 21:34:21,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1440. [2020-10-21 21:34:21,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1440 states. [2020-10-21 21:34:21,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 3564 transitions. [2020-10-21 21:34:21,252 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 3564 transitions. Word has length 12 [2020-10-21 21:34:21,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:34:21,253 INFO L481 AbstractCegarLoop]: Abstraction has 1440 states and 3564 transitions. [2020-10-21 21:34:21,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 21:34:21,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 3564 transitions. [2020-10-21 21:34:21,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 21:34:21,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:34:21,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:34:21,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-21 21:34:21,256 INFO L429 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 21:34:21,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:34:21,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1573076366, now seen corresponding path program 1 times [2020-10-21 21:34:21,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:34:21,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961808258] [2020-10-21 21:34:21,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:34:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:34:21,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:34:21,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961808258] [2020-10-21 21:34:21,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:34:21,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-21 21:34:21,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520826908] [2020-10-21 21:34:21,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 21:34:21,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:34:21,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 21:34:21,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-21 21:34:21,315 INFO L87 Difference]: Start difference. First operand 1440 states and 3564 transitions. Second operand 5 states. [2020-10-21 21:34:21,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:34:21,369 INFO L93 Difference]: Finished difference Result 1734 states and 4180 transitions. [2020-10-21 21:34:21,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 21:34:21,369 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-21 21:34:21,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:34:21,377 INFO L225 Difference]: With dead ends: 1734 [2020-10-21 21:34:21,377 INFO L226 Difference]: Without dead ends: 1508 [2020-10-21 21:34:21,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-21 21:34:21,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2020-10-21 21:34:21,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1376. [2020-10-21 21:34:21,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1376 states. [2020-10-21 21:34:21,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 3414 transitions. [2020-10-21 21:34:21,424 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 3414 transitions. Word has length 19 [2020-10-21 21:34:21,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:34:21,424 INFO L481 AbstractCegarLoop]: Abstraction has 1376 states and 3414 transitions. [2020-10-21 21:34:21,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 21:34:21,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 3414 transitions. [2020-10-21 21:34:21,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 21:34:21,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:34:21,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:34:21,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-21 21:34:21,427 INFO L429 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 21:34:21,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:34:21,427 INFO L82 PathProgramCache]: Analyzing trace with hash -144078048, now seen corresponding path program 2 times [2020-10-21 21:34:21,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:34:21,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491422333] [2020-10-21 21:34:21,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:34:21,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:34:21,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:34:21,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491422333] [2020-10-21 21:34:21,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:34:21,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-21 21:34:21,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629740481] [2020-10-21 21:34:21,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 21:34:21,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:34:21,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 21:34:21,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 21:34:21,526 INFO L87 Difference]: Start difference. First operand 1376 states and 3414 transitions. Second operand 5 states. [2020-10-21 21:34:21,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:34:21,559 INFO L93 Difference]: Finished difference Result 530 states and 1160 transitions. [2020-10-21 21:34:21,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 21:34:21,560 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-21 21:34:21,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:34:21,560 INFO L225 Difference]: With dead ends: 530 [2020-10-21 21:34:21,561 INFO L226 Difference]: Without dead ends: 0 [2020-10-21 21:34:21,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 21:34:21,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-21 21:34:21,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-21 21:34:21,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-21 21:34:21,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-21 21:34:21,562 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-21 21:34:21,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:34:21,562 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-21 21:34:21,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 21:34:21,562 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-21 21:34:21,563 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-21 21:34:21,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-21 21:34:21,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 09:34:21 BasicIcfg [2020-10-21 21:34:21,567 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-21 21:34:21,569 INFO L168 Benchmark]: Toolchain (without parser) took 7312.71 ms. Allocated memory was 141.6 MB in the beginning and 310.4 MB in the end (delta: 168.8 MB). Free memory was 102.5 MB in the beginning and 117.2 MB in the end (delta: -14.8 MB). Peak memory consumption was 154.1 MB. Max. memory is 7.1 GB. [2020-10-21 21:34:21,570 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-21 21:34:21,571 INFO L168 Benchmark]: CACSL2BoogieTranslator took 781.58 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 101.4 MB in the beginning and 159.5 MB in the end (delta: -58.1 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-10-21 21:34:21,572 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.55 ms. Allocated memory is still 204.5 MB. Free memory was 159.5 MB in the beginning and 157.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-21 21:34:21,573 INFO L168 Benchmark]: Boogie Preprocessor took 25.77 ms. Allocated memory is still 204.5 MB. Free memory was 157.5 MB in the beginning and 155.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-21 21:34:21,573 INFO L168 Benchmark]: RCFGBuilder took 594.00 ms. Allocated memory is still 204.5 MB. Free memory was 155.6 MB in the beginning and 123.6 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. [2020-10-21 21:34:21,574 INFO L168 Benchmark]: TraceAbstraction took 5843.34 ms. Allocated memory was 204.5 MB in the beginning and 310.4 MB in the end (delta: 105.9 MB). Free memory was 123.0 MB in the beginning and 117.2 MB in the end (delta: 5.7 MB). Peak memory consumption was 111.6 MB. Max. memory is 7.1 GB. [2020-10-21 21:34:21,579 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 781.58 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 101.4 MB in the beginning and 159.5 MB in the end (delta: -58.1 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 56.55 ms. Allocated memory is still 204.5 MB. Free memory was 159.5 MB in the beginning and 157.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.77 ms. Allocated memory is still 204.5 MB. Free memory was 157.5 MB in the beginning and 155.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 594.00 ms. Allocated memory is still 204.5 MB. Free memory was 155.6 MB in the beginning and 123.6 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5843.34 ms. Allocated memory was 204.5 MB in the beginning and 310.4 MB in the end (delta: 105.9 MB). Free memory was 123.0 MB in the beginning and 117.2 MB in the end (delta: 5.7 MB). Peak memory consumption was 111.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 2783 VarBasedMoverChecksPositive, 122 VarBasedMoverChecksNegative, 68 SemBasedMoverChecksPositive, 54 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 854 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.9s, 109 PlacesBefore, 56 PlacesAfterwards, 112 TransitionsBefore, 57 TransitionsAfterwards, 3184 CoEnabledTransitionPairs, 8 FixpointIterations, 27 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 79 TotalNumberOfCompositions, 21686 MoverChecksTotal - PositiveResult [Line: 16]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 466 SDtfs, 439 SDslu, 510 SDs, 0 SdLazy, 137 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4772occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 6 MinimizatonAttempts, 5459 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 2276 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...