/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-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-14 12:51:33,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-14 12:51:33,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-14 12:51:33,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-14 12:51:33,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-14 12:51:33,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-14 12:51:33,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-14 12:51:33,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-14 12:51:33,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-14 12:51:33,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-14 12:51:33,129 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-14 12:51:33,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-14 12:51:33,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-14 12:51:33,133 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-14 12:51:33,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-14 12:51:33,138 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-14 12:51:33,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-14 12:51:33,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-14 12:51:33,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-14 12:51:33,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-14 12:51:33,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-14 12:51:33,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-14 12:51:33,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-14 12:51:33,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-14 12:51:33,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-14 12:51:33,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-14 12:51:33,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-14 12:51:33,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-14 12:51:33,192 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-14 12:51:33,235 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-14 12:51:33,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-14 12:51:33,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-14 12:51:33,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-14 12:51:33,238 INFO L138 SettingsManager]: * Use SBE=true [2020-09-14 12:51:33,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-14 12:51:33,238 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-14 12:51:33,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-14 12:51:33,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-14 12:51:33,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-14 12:51:33,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-14 12:51:33,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-14 12:51:33,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-14 12:51:33,241 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-14 12:51:33,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-14 12:51:33,241 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-14 12:51:33,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-14 12:51:33,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-14 12:51:33,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-14 12:51:33,242 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-14 12:51:33,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-14 12:51:33,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-14 12:51:33,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-14 12:51:33,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-14 12:51:33,243 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-14 12:51:33,243 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-14 12:51:33,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-14 12:51:33,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-14 12:51:33,244 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-14 12:51:33,244 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-14 12:51:33,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-14 12:51:33,697 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-14 12:51:33,703 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-14 12:51:33,705 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-14 12:51:33,706 INFO L275 PluginConnector]: CDTParser initialized [2020-09-14 12:51:33,707 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i [2020-09-14 12:51:33,783 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5796d846f/d294451f79774ee6ab2471c8adbd176a/FLAG68b9a6c51 [2020-09-14 12:51:34,364 INFO L306 CDTParser]: Found 1 translation units. [2020-09-14 12:51:34,365 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i [2020-09-14 12:51:34,391 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5796d846f/d294451f79774ee6ab2471c8adbd176a/FLAG68b9a6c51 [2020-09-14 12:51:34,622 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5796d846f/d294451f79774ee6ab2471c8adbd176a [2020-09-14 12:51:34,636 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-14 12:51:34,642 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-14 12:51:34,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-14 12:51:34,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-14 12:51:34,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-14 12:51:34,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 12:51:34" (1/1) ... [2020-09-14 12:51:34,653 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58e4574c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 12:51:34, skipping insertion in model container [2020-09-14 12:51:34,653 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 12:51:34" (1/1) ... [2020-09-14 12:51:34,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-14 12:51:34,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-14 12:51:35,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 12:51:35,307 INFO L203 MainTranslator]: Completed pre-run [2020-09-14 12:51:35,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 12:51:35,439 INFO L208 MainTranslator]: Completed translation [2020-09-14 12:51:35,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 12:51:35 WrapperNode [2020-09-14 12:51:35,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-14 12:51:35,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-14 12:51:35,442 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-14 12:51:35,442 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-14 12:51:35,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 12:51:35" (1/1) ... [2020-09-14 12:51:35,471 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 12:51:35" (1/1) ... [2020-09-14 12:51:35,501 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-14 12:51:35,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-14 12:51:35,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-14 12:51:35,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-14 12:51:35,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 12:51:35" (1/1) ... [2020-09-14 12:51:35,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 12:51:35" (1/1) ... [2020-09-14 12:51:35,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 12:51:35" (1/1) ... [2020-09-14 12:51:35,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 12:51:35" (1/1) ... [2020-09-14 12:51:35,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 12:51:35" (1/1) ... [2020-09-14 12:51:35,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 12:51:35" (1/1) ... [2020-09-14 12:51:35,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 12:51:35" (1/1) ... [2020-09-14 12:51:35,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-14 12:51:35,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-14 12:51:35,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-14 12:51:35,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-14 12:51:35,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 12:51:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-14 12:51:35,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-14 12:51:35,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-14 12:51:35,623 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2020-09-14 12:51:35,623 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2020-09-14 12:51:35,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-14 12:51:35,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-14 12:51:35,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-14 12:51:35,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-14 12:51:35,624 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2020-09-14 12:51:35,624 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2020-09-14 12:51:35,626 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-14 12:51:36,128 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-14 12:51:36,129 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-14 12:51:36,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 12:51:36 BoogieIcfgContainer [2020-09-14 12:51:36,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-14 12:51:36,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-14 12:51:36,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-14 12:51:36,140 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-14 12:51:36,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 12:51:34" (1/3) ... [2020-09-14 12:51:36,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22930f61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 12:51:36, skipping insertion in model container [2020-09-14 12:51:36,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 12:51:35" (2/3) ... [2020-09-14 12:51:36,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22930f61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 12:51:36, skipping insertion in model container [2020-09-14 12:51:36,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 12:51:36" (3/3) ... [2020-09-14 12:51:36,146 INFO L109 eAbstractionObserver]: Analyzing ICFG read_write_lock-2.i [2020-09-14 12:51:36,159 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-14 12:51:36,159 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-14 12:51:36,169 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-14 12:51:36,170 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-14 12:51:36,207 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,207 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,207 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,208 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,208 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,208 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,209 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,209 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,209 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,210 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,210 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,210 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,210 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,211 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,211 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,211 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,212 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,212 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,212 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,212 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,213 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,213 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,214 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,214 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,214 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,214 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,215 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,215 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,215 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,216 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,216 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,216 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,216 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,217 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,217 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,217 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,217 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,217 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,218 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,218 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,218 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,219 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,223 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,223 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,224 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,224 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,224 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,224 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,231 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,231 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,231 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,232 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,232 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,232 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,232 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,235 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,235 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,235 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,236 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,236 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,236 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,238 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,239 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,239 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,239 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,239 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,240 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,240 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:36,282 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-09-14 12:51:36,311 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-14 12:51:36,311 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-14 12:51:36,311 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-14 12:51:36,312 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-14 12:51:36,312 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-14 12:51:36,312 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-14 12:51:36,312 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-14 12:51:36,312 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-14 12:51:36,333 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 102 transitions, 272 flow [2020-09-14 12:51:36,336 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 101 places, 102 transitions, 272 flow [2020-09-14 12:51:36,407 INFO L129 PetriNetUnfolder]: 19/136 cut-off events. [2020-09-14 12:51:36,408 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-09-14 12:51:36,416 INFO L80 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 136 events. 19/136 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 329 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 93. Up to 12 conditions per place. [2020-09-14 12:51:36,422 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 101 places, 102 transitions, 272 flow [2020-09-14 12:51:36,478 INFO L129 PetriNetUnfolder]: 19/136 cut-off events. [2020-09-14 12:51:36,479 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-09-14 12:51:36,481 INFO L80 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 136 events. 19/136 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 329 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 93. Up to 12 conditions per place. [2020-09-14 12:51:36,488 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2626 [2020-09-14 12:51:36,490 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-14 12:51:38,503 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-09-14 12:51:38,705 INFO L206 etLargeBlockEncoding]: Checked pairs total: 10426 [2020-09-14 12:51:38,705 INFO L214 etLargeBlockEncoding]: Total number of compositions: 51 [2020-09-14 12:51:38,711 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 58 places, 58 transitions, 184 flow [2020-09-14 12:51:39,229 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5381 states. [2020-09-14 12:51:39,233 INFO L276 IsEmpty]: Start isEmpty. Operand 5381 states. [2020-09-14 12:51:39,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-14 12:51:39,244 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 12:51:39,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 12:51:39,246 INFO L427 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-14 12:51:39,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 12:51:39,255 INFO L82 PathProgramCache]: Analyzing trace with hash -2129852361, now seen corresponding path program 1 times [2020-09-14 12:51:39,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 12:51:39,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775545833] [2020-09-14 12:51:39,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 12:51:39,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 12:51:39,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 12:51:39,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775545833] [2020-09-14 12:51:39,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 12:51:39,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 12:51:39,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740161723] [2020-09-14 12:51:39,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 12:51:39,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 12:51:39,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 12:51:39,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 12:51:39,594 INFO L87 Difference]: Start difference. First operand 5381 states. Second operand 4 states. [2020-09-14 12:51:39,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 12:51:39,925 INFO L93 Difference]: Finished difference Result 10812 states and 36249 transitions. [2020-09-14 12:51:39,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 12:51:39,928 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-09-14 12:51:39,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 12:51:40,062 INFO L225 Difference]: With dead ends: 10812 [2020-09-14 12:51:40,062 INFO L226 Difference]: Without dead ends: 7730 [2020-09-14 12:51:40,064 INFO L675 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 [2020-09-14 12:51:40,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7730 states. [2020-09-14 12:51:40,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7730 to 5052. [2020-09-14 12:51:40,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5052 states. [2020-09-14 12:51:40,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5052 states to 5052 states and 17159 transitions. [2020-09-14 12:51:40,466 INFO L78 Accepts]: Start accepts. Automaton has 5052 states and 17159 transitions. Word has length 8 [2020-09-14 12:51:40,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 12:51:40,467 INFO L479 AbstractCegarLoop]: Abstraction has 5052 states and 17159 transitions. [2020-09-14 12:51:40,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 12:51:40,467 INFO L276 IsEmpty]: Start isEmpty. Operand 5052 states and 17159 transitions. [2020-09-14 12:51:40,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-14 12:51:40,469 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 12:51:40,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 12:51:40,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-14 12:51:40,470 INFO L427 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-14 12:51:40,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 12:51:40,470 INFO L82 PathProgramCache]: Analyzing trace with hash 156591844, now seen corresponding path program 1 times [2020-09-14 12:51:40,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 12:51:40,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783450388] [2020-09-14 12:51:40,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 12:51:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 12:51:40,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 12:51:40,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783450388] [2020-09-14 12:51:40,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 12:51:40,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 12:51:40,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079789880] [2020-09-14 12:51:40,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 12:51:40,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 12:51:40,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 12:51:40,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 12:51:40,566 INFO L87 Difference]: Start difference. First operand 5052 states and 17159 transitions. Second operand 3 states. [2020-09-14 12:51:40,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 12:51:40,691 INFO L93 Difference]: Finished difference Result 4317 states and 12958 transitions. [2020-09-14 12:51:40,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 12:51:40,693 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-14 12:51:40,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 12:51:40,730 INFO L225 Difference]: With dead ends: 4317 [2020-09-14 12:51:40,730 INFO L226 Difference]: Without dead ends: 4275 [2020-09-14 12:51:40,731 INFO L675 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 [2020-09-14 12:51:40,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4275 states. [2020-09-14 12:51:40,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4275 to 4275. [2020-09-14 12:51:40,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4275 states. [2020-09-14 12:51:40,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4275 states to 4275 states and 12848 transitions. [2020-09-14 12:51:40,977 INFO L78 Accepts]: Start accepts. Automaton has 4275 states and 12848 transitions. Word has length 10 [2020-09-14 12:51:40,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 12:51:40,978 INFO L479 AbstractCegarLoop]: Abstraction has 4275 states and 12848 transitions. [2020-09-14 12:51:40,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 12:51:40,978 INFO L276 IsEmpty]: Start isEmpty. Operand 4275 states and 12848 transitions. [2020-09-14 12:51:40,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-14 12:51:40,981 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 12:51:40,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 12:51:40,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-14 12:51:40,982 INFO L427 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-14 12:51:40,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 12:51:40,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1911303952, now seen corresponding path program 2 times [2020-09-14 12:51:40,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 12:51:40,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516653625] [2020-09-14 12:51:40,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 12:51:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 12:51:41,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 12:51:41,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516653625] [2020-09-14 12:51:41,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 12:51:41,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 12:51:41,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335688803] [2020-09-14 12:51:41,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 12:51:41,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 12:51:41,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 12:51:41,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 12:51:41,121 INFO L87 Difference]: Start difference. First operand 4275 states and 12848 transitions. Second operand 4 states. [2020-09-14 12:51:41,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 12:51:41,219 INFO L93 Difference]: Finished difference Result 2906 states and 7004 transitions. [2020-09-14 12:51:41,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 12:51:41,220 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-09-14 12:51:41,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 12:51:41,258 INFO L225 Difference]: With dead ends: 2906 [2020-09-14 12:51:41,259 INFO L226 Difference]: Without dead ends: 2798 [2020-09-14 12:51:41,259 INFO L675 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 [2020-09-14 12:51:41,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2020-09-14 12:51:41,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2390. [2020-09-14 12:51:41,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2390 states. [2020-09-14 12:51:41,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2390 states to 2390 states and 5909 transitions. [2020-09-14 12:51:41,351 INFO L78 Accepts]: Start accepts. Automaton has 2390 states and 5909 transitions. Word has length 10 [2020-09-14 12:51:41,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 12:51:41,352 INFO L479 AbstractCegarLoop]: Abstraction has 2390 states and 5909 transitions. [2020-09-14 12:51:41,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 12:51:41,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2390 states and 5909 transitions. [2020-09-14 12:51:41,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-14 12:51:41,360 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 12:51:41,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 12:51:41,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-14 12:51:41,361 INFO L427 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-14 12:51:41,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 12:51:41,361 INFO L82 PathProgramCache]: Analyzing trace with hash -412348577, now seen corresponding path program 1 times [2020-09-14 12:51:41,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 12:51:41,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668526899] [2020-09-14 12:51:41,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 12:51:41,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 12:51:41,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 12:51:41,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668526899] [2020-09-14 12:51:41,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 12:51:41,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 12:51:41,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501205975] [2020-09-14 12:51:41,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 12:51:41,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 12:51:41,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 12:51:41,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 12:51:41,455 INFO L87 Difference]: Start difference. First operand 2390 states and 5909 transitions. Second operand 4 states. [2020-09-14 12:51:41,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 12:51:41,579 INFO L93 Difference]: Finished difference Result 2639 states and 6454 transitions. [2020-09-14 12:51:41,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 12:51:41,580 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-14 12:51:41,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 12:51:41,587 INFO L225 Difference]: With dead ends: 2639 [2020-09-14 12:51:41,587 INFO L226 Difference]: Without dead ends: 1900 [2020-09-14 12:51:41,588 INFO L675 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 [2020-09-14 12:51:41,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1900 states. [2020-09-14 12:51:41,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1900 to 1546. [2020-09-14 12:51:41,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1546 states. [2020-09-14 12:51:41,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1546 states to 1546 states and 3824 transitions. [2020-09-14 12:51:41,658 INFO L78 Accepts]: Start accepts. Automaton has 1546 states and 3824 transitions. Word has length 12 [2020-09-14 12:51:41,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 12:51:41,659 INFO L479 AbstractCegarLoop]: Abstraction has 1546 states and 3824 transitions. [2020-09-14 12:51:41,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 12:51:41,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1546 states and 3824 transitions. [2020-09-14 12:51:41,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-14 12:51:41,662 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 12:51:41,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 12:51:41,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-14 12:51:41,662 INFO L427 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-14 12:51:41,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 12:51:41,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1963403643, now seen corresponding path program 1 times [2020-09-14 12:51:41,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 12:51:41,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127132708] [2020-09-14 12:51:41,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 12:51:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 12:51:41,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 12:51:41,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127132708] [2020-09-14 12:51:41,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 12:51:41,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-14 12:51:41,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702048607] [2020-09-14 12:51:41,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-14 12:51:41,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 12:51:41,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-14 12:51:41,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-14 12:51:41,751 INFO L87 Difference]: Start difference. First operand 1546 states and 3824 transitions. Second operand 6 states. [2020-09-14 12:51:41,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 12:51:41,862 INFO L93 Difference]: Finished difference Result 1795 states and 4395 transitions. [2020-09-14 12:51:41,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-14 12:51:41,863 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-09-14 12:51:41,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 12:51:41,868 INFO L225 Difference]: With dead ends: 1795 [2020-09-14 12:51:41,868 INFO L226 Difference]: Without dead ends: 1642 [2020-09-14 12:51:41,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-14 12:51:41,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2020-09-14 12:51:41,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1510. [2020-09-14 12:51:41,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1510 states. [2020-09-14 12:51:41,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1510 states to 1510 states and 3689 transitions. [2020-09-14 12:51:41,927 INFO L78 Accepts]: Start accepts. Automaton has 1510 states and 3689 transitions. Word has length 20 [2020-09-14 12:51:41,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 12:51:41,928 INFO L479 AbstractCegarLoop]: Abstraction has 1510 states and 3689 transitions. [2020-09-14 12:51:41,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-14 12:51:41,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1510 states and 3689 transitions. [2020-09-14 12:51:41,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-14 12:51:41,930 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 12:51:41,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 12:51:41,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-14 12:51:41,931 INFO L427 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-14 12:51:41,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 12:51:41,931 INFO L82 PathProgramCache]: Analyzing trace with hash -366552805, now seen corresponding path program 1 times [2020-09-14 12:51:41,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 12:51:41,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17366380] [2020-09-14 12:51:41,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 12:51:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 12:51:42,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 12:51:42,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17366380] [2020-09-14 12:51:42,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 12:51:42,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-14 12:51:42,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971026240] [2020-09-14 12:51:42,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-14 12:51:42,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 12:51:42,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-14 12:51:42,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-14 12:51:42,020 INFO L87 Difference]: Start difference. First operand 1510 states and 3689 transitions. Second operand 6 states. [2020-09-14 12:51:42,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 12:51:42,160 INFO L93 Difference]: Finished difference Result 1759 states and 4260 transitions. [2020-09-14 12:51:42,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-14 12:51:42,161 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-09-14 12:51:42,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 12:51:42,165 INFO L225 Difference]: With dead ends: 1759 [2020-09-14 12:51:42,165 INFO L226 Difference]: Without dead ends: 1498 [2020-09-14 12:51:42,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-14 12:51:42,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2020-09-14 12:51:42,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1366. [2020-09-14 12:51:42,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1366 states. [2020-09-14 12:51:42,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 3257 transitions. [2020-09-14 12:51:42,214 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 3257 transitions. Word has length 20 [2020-09-14 12:51:42,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 12:51:42,215 INFO L479 AbstractCegarLoop]: Abstraction has 1366 states and 3257 transitions. [2020-09-14 12:51:42,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-14 12:51:42,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 3257 transitions. [2020-09-14 12:51:42,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-14 12:51:42,218 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 12:51:42,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 12:51:42,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-14 12:51:42,219 INFO L427 AbstractCegarLoop]: === Iteration 7 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-14 12:51:42,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 12:51:42,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1693480529, now seen corresponding path program 2 times [2020-09-14 12:51:42,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 12:51:42,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854776401] [2020-09-14 12:51:42,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 12:51:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-14 12:51:42,252 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-14 12:51:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-14 12:51:42,278 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-14 12:51:42,320 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-14 12:51:42,321 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-14 12:51:42,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-14 12:51:42,322 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-14 12:51:42,332 WARN L123 codingBacktranslator]: Skipped backtranslation of ATE [287] [287] L697-->L697-3: Formula: (= ~y~0_In1843748388 ~x~0_In1843748388) InVars {~y~0=~y~0_In1843748388, ~x~0=~x~0_In1843748388} OutVars{~y~0=~y~0_In1843748388, ~x~0=~x~0_In1843748388} AuxVars[] AssignedVars[] because there is no mapped edge [2020-09-14 12:51:42,339 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-09-14 12:51:42,339 WARN L224 RCFGBacktranslator]: unable to determine which branch was taken at C: __VERIFIER_atomic_take_read_lock() [694] [2020-09-14 12:51:42,343 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-09-14 12:51:42,343 WARN L224 RCFGBacktranslator]: unable to determine which branch was taken at C: __VERIFIER_atomic_take_read_lock() [694] [2020-09-14 12:51:42,344 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-09-14 12:51:42,344 WARN L224 RCFGBacktranslator]: unable to determine which branch was taken at C: __VERIFIER_atomic_take_write_lock() [687] [2020-09-14 12:51:42,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 12:51:42 BasicIcfg [2020-09-14 12:51:42,399 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-14 12:51:42,402 INFO L168 Benchmark]: Toolchain (without parser) took 7763.52 ms. Allocated memory was 140.0 MB in the beginning and 348.7 MB in the end (delta: 208.7 MB). Free memory was 100.0 MB in the beginning and 253.8 MB in the end (delta: -153.9 MB). Peak memory consumption was 54.8 MB. Max. memory is 7.1 GB. [2020-09-14 12:51:42,403 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-14 12:51:42,410 INFO L168 Benchmark]: CACSL2BoogieTranslator took 798.47 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 99.3 MB in the beginning and 163.4 MB in the end (delta: -64.1 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-09-14 12:51:42,414 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.56 ms. Allocated memory is still 203.9 MB. Free memory was 163.4 MB in the beginning and 161.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-14 12:51:42,415 INFO L168 Benchmark]: Boogie Preprocessor took 34.04 ms. Allocated memory is still 203.9 MB. Free memory was 161.4 MB in the beginning and 160.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-14 12:51:42,416 INFO L168 Benchmark]: RCFGBuilder took 598.22 ms. Allocated memory is still 203.9 MB. Free memory was 159.4 MB in the beginning and 127.5 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 7.1 GB. [2020-09-14 12:51:42,417 INFO L168 Benchmark]: TraceAbstraction took 6262.95 ms. Allocated memory was 203.9 MB in the beginning and 348.7 MB in the end (delta: 144.7 MB). Free memory was 127.5 MB in the beginning and 253.8 MB in the end (delta: -126.3 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. [2020-09-14 12:51:42,432 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 798.47 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 99.3 MB in the beginning and 163.4 MB in the end (delta: -64.1 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.56 ms. Allocated memory is still 203.9 MB. Free memory was 163.4 MB in the beginning and 161.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.04 ms. Allocated memory is still 203.9 MB. Free memory was 161.4 MB in the beginning and 160.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 598.22 ms. Allocated memory is still 203.9 MB. Free memory was 159.4 MB in the beginning and 127.5 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6262.95 ms. Allocated memory was 203.9 MB in the beginning and 348.7 MB in the end (delta: 144.7 MB). Free memory was 127.5 MB in the beginning and 253.8 MB in the end (delta: -126.3 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.3s, 101 ProgramPointsBefore, 58 ProgramPointsAfterwards, 102 TransitionsBefore, 58 TransitionsAfterwards, 2626 CoEnabledTransitionPairs, 8 FixpointIterations, 23 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 1149 VarBasedMoverChecksPositive, 80 VarBasedMoverChecksNegative, 49 SemBasedMoverChecksPositive, 57 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 0 MoverChecksTotal, 10426 CheckedPairsTotal, 51 TotalNumberOfCompositions - CounterExampleResult [Line: 697]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L677] 0 int w=0, r=0, x, y; [L703] 0 pthread_t t1, t2, t3, t4; [L704] FCALL, FORK 0 pthread_create(&t1, 0, writer, 0) VAL [r=0, w=0, x=0, y=0] [L705] FCALL, FORK 0 pthread_create(&t2, 0, reader, 0) VAL [r=0, w=0, x=0, y=0] [L693] 2 int l; [L694] CALL 2 __VERIFIER_atomic_take_read_lock() [L683] CALL 2 assume_abort_if_not(w==0) [L3] COND TRUE 2 !cond [L683] RET 2 assume_abort_if_not(w==0) [L684] 2 r = r+1 [L694] RET 2 __VERIFIER_atomic_take_read_lock() [L695] 2 l = x VAL [r=1, w=0, x=0, y=0] [L706] FCALL, FORK 0 pthread_create(&t3, 0, writer, 0) VAL [r=1, w=0, x=0, y=0] [L707] FCALL, FORK 0 pthread_create(&t4, 0, reader, 0) VAL [r=1, w=0, x=0, y=0] [L696] 2 y = l VAL [r=1, w=0, x=0, y=0] [L698] 2 l = r-1 VAL [r=1, w=0, x=0, y=0] [L693] 4 int l; [L694] CALL 4 __VERIFIER_atomic_take_read_lock() [L683] CALL 4 assume_abort_if_not(w==0) [L3] COND TRUE 4 !cond [L683] RET 4 assume_abort_if_not(w==0) [L684] 4 r = r+1 [L694] RET 4 __VERIFIER_atomic_take_read_lock() [L695] 4 l = x VAL [r=2, w=0, x=0, y=0] [L696] 4 y = l VAL [r=2, w=0, x=0, y=0] [L699] 2 r = l [L700] 2 return 0; [L687] CALL 3 __VERIFIER_atomic_take_write_lock() [L679] CALL 3 assume_abort_if_not(w==0 && r==0) [L3] COND TRUE 3 !cond [L679] RET 3 assume_abort_if_not(w==0 && r==0) [L680] 3 w = 1 [L687] RET 3 __VERIFIER_atomic_take_write_lock() [L688] 3 x = 3 VAL [r=0, w=1, x=3, y=0] [L697] COND TRUE 4 !(y == x) [L697] 4 __VERIFIER_error() VAL [r=0, w=1, x=3, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.0s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 511 SDtfs, 441 SDslu, 720 SDs, 0 SdLazy, 211 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5381occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 6 MinimizatonAttempts, 3704 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 2598 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 incorrect! Received shutdown request...