/usr/bin/java -Xmx16000000000 -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/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 20:48:44,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 20:48:44,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 20:48:44,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 20:48:44,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 20:48:44,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 20:48:44,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 20:48:44,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 20:48:44,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 20:48:44,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 20:48:44,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 20:48:44,425 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 20:48:44,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 20:48:44,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 20:48:44,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 20:48:44,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 20:48:44,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 20:48:44,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 20:48:44,431 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 20:48:44,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 20:48:44,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 20:48:44,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 20:48:44,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 20:48:44,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 20:48:44,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 20:48:44,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 20:48:44,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 20:48:44,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 20:48:44,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 20:48:44,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 20:48:44,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 20:48:44,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 20:48:44,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 20:48:44,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 20:48:44,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 20:48:44,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 20:48:44,450 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-10-15 20:48:44,472 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 20:48:44,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 20:48:44,474 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 20:48:44,474 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 20:48:44,474 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 20:48:44,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 20:48:44,475 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 20:48:44,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 20:48:44,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 20:48:44,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 20:48:44,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 20:48:44,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 20:48:44,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 20:48:44,476 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 20:48:44,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 20:48:44,476 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 20:48:44,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 20:48:44,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 20:48:44,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 20:48:44,477 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 20:48:44,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 20:48:44,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 20:48:44,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 20:48:44,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 20:48:44,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 20:48:44,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 20:48:44,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 20:48:44,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 20:48:44,479 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 20:48:44,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 20:48:44,815 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 20:48:44,819 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 20:48:44,820 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 20:48:44,821 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 20:48:44,821 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2020-10-15 20:48:44,891 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c25499389/69d64c56444248c09fb46fdaa8b17bed/FLAG69aed5559 [2020-10-15 20:48:45,465 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 20:48:45,466 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2020-10-15 20:48:45,479 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c25499389/69d64c56444248c09fb46fdaa8b17bed/FLAG69aed5559 [2020-10-15 20:48:45,738 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c25499389/69d64c56444248c09fb46fdaa8b17bed [2020-10-15 20:48:45,749 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 20:48:45,751 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 20:48:45,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 20:48:45,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 20:48:45,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 20:48:45,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:48:45" (1/1) ... [2020-10-15 20:48:45,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61b72f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:45, skipping insertion in model container [2020-10-15 20:48:45,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:48:45" (1/1) ... [2020-10-15 20:48:45,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 20:48:45,810 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 20:48:46,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 20:48:46,246 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 20:48:46,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 20:48:46,376 INFO L208 MainTranslator]: Completed translation [2020-10-15 20:48:46,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:46 WrapperNode [2020-10-15 20:48:46,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 20:48:46,378 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 20:48:46,379 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 20:48:46,379 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 20:48:46,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:46" (1/1) ... [2020-10-15 20:48:46,405 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:46" (1/1) ... [2020-10-15 20:48:46,432 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 20:48:46,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 20:48:46,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 20:48:46,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 20:48:46,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:46" (1/1) ... [2020-10-15 20:48:46,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:46" (1/1) ... [2020-10-15 20:48:46,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:46" (1/1) ... [2020-10-15 20:48:46,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:46" (1/1) ... [2020-10-15 20:48:46,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:46" (1/1) ... [2020-10-15 20:48:46,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:46" (1/1) ... [2020-10-15 20:48:46,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:46" (1/1) ... [2020-10-15 20:48:46,464 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 20:48:46,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 20:48:46,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 20:48:46,465 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 20:48:46,466 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:46" (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 [2020-10-15 20:48:46,537 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-15 20:48:46,537 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-15 20:48:46,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 20:48:46,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 20:48:46,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 20:48:46,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 20:48:46,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 20:48:46,540 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 20:48:47,192 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 20:48:47,192 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-15 20:48:47,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:48:47 BoogieIcfgContainer [2020-10-15 20:48:47,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 20:48:47,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 20:48:47,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 20:48:47,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 20:48:47,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:48:45" (1/3) ... [2020-10-15 20:48:47,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e741a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:48:47, skipping insertion in model container [2020-10-15 20:48:47,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:46" (2/3) ... [2020-10-15 20:48:47,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e741a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:48:47, skipping insertion in model container [2020-10-15 20:48:47,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:48:47" (3/3) ... [2020-10-15 20:48:47,205 INFO L111 eAbstractionObserver]: Analyzing ICFG 23_lu-fig2.fixed.i [2020-10-15 20:48:47,219 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 20:48:47,219 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 20:48:47,228 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-15 20:48:47,229 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 20:48:47,255 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:47,256 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:47,256 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:47,257 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:47,257 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:47,257 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:47,258 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:47,258 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:47,258 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:47,259 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:47,259 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:47,259 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:47,260 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:47,260 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:47,260 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:47,261 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:47,261 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:47,265 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:47,265 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:47,266 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:47,266 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:47,266 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:47,267 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:47,267 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:47,267 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:47,267 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:47,286 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-15 20:48:47,307 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 20:48:47,307 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 20:48:47,307 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 20:48:47,308 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 20:48:47,308 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 20:48:47,308 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 20:48:47,308 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 20:48:47,308 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 20:48:47,321 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 20:48:47,323 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 43 transitions, 91 flow [2020-10-15 20:48:47,326 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 43 transitions, 91 flow [2020-10-15 20:48:47,328 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 45 places, 43 transitions, 91 flow [2020-10-15 20:48:47,359 INFO L129 PetriNetUnfolder]: 2/42 cut-off events. [2020-10-15 20:48:47,360 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 20:48:47,365 INFO L80 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 42 events. 2/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2020-10-15 20:48:47,367 INFO L117 LiptonReduction]: Number of co-enabled transitions 378 [2020-10-15 20:48:48,509 INFO L132 LiptonReduction]: Checked pairs total: 798 [2020-10-15 20:48:48,509 INFO L134 LiptonReduction]: Total number of compositions: 32 [2020-10-15 20:48:48,517 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 14 transitions, 33 flow [2020-10-15 20:48:48,528 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 38 states. [2020-10-15 20:48:48,530 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-15 20:48:48,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-15 20:48:48,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:48:48,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-15 20:48:48,538 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:48:48,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:48:48,545 INFO L82 PathProgramCache]: Analyzing trace with hash 10250802, now seen corresponding path program 1 times [2020-10-15 20:48:48,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:48:48,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106588125] [2020-10-15 20:48:48,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:48:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:48:48,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:48:48,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106588125] [2020-10-15 20:48:48,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:48:48,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 20:48:48,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419143894] [2020-10-15 20:48:48,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 20:48:48,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:48:48,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 20:48:48,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:48:48,803 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-10-15 20:48:48,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:48:48,843 INFO L93 Difference]: Finished difference Result 29 states and 50 transitions. [2020-10-15 20:48:48,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 20:48:48,846 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-15 20:48:48,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:48:48,858 INFO L225 Difference]: With dead ends: 29 [2020-10-15 20:48:48,858 INFO L226 Difference]: Without dead ends: 22 [2020-10-15 20:48:48,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:48:48,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-15 20:48:48,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-15 20:48:48,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-15 20:48:48,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 38 transitions. [2020-10-15 20:48:48,905 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 38 transitions. Word has length 4 [2020-10-15 20:48:48,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:48:48,905 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 38 transitions. [2020-10-15 20:48:48,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 20:48:48,906 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 38 transitions. [2020-10-15 20:48:48,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-15 20:48:48,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:48:48,906 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-15 20:48:48,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 20:48:48,908 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:48:48,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:48:48,909 INFO L82 PathProgramCache]: Analyzing trace with hash 317781255, now seen corresponding path program 1 times [2020-10-15 20:48:48,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:48:48,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715262358] [2020-10-15 20:48:48,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:48:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:48:49,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:48:49,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715262358] [2020-10-15 20:48:49,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:48:49,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 20:48:49,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87455913] [2020-10-15 20:48:49,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 20:48:49,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:48:49,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 20:48:49,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:48:49,014 INFO L87 Difference]: Start difference. First operand 22 states and 38 transitions. Second operand 3 states. [2020-10-15 20:48:49,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:48:49,031 INFO L93 Difference]: Finished difference Result 21 states and 35 transitions. [2020-10-15 20:48:49,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 20:48:49,032 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-15 20:48:49,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:48:49,033 INFO L225 Difference]: With dead ends: 21 [2020-10-15 20:48:49,033 INFO L226 Difference]: Without dead ends: 18 [2020-10-15 20:48:49,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:48:49,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-15 20:48:49,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-15 20:48:49,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-15 20:48:49,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 27 transitions. [2020-10-15 20:48:49,038 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 27 transitions. Word has length 5 [2020-10-15 20:48:49,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:48:49,038 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 27 transitions. [2020-10-15 20:48:49,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 20:48:49,039 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 27 transitions. [2020-10-15 20:48:49,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-15 20:48:49,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:48:49,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:48:49,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 20:48:49,040 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:48:49,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:48:49,041 INFO L82 PathProgramCache]: Analyzing trace with hash 438816069, now seen corresponding path program 1 times [2020-10-15 20:48:49,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:48:49,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257784553] [2020-10-15 20:48:49,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:48:49,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:48:49,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:48:49,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257784553] [2020-10-15 20:48:49,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:48:49,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 20:48:49,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225769107] [2020-10-15 20:48:49,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 20:48:49,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:48:49,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 20:48:49,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 20:48:49,093 INFO L87 Difference]: Start difference. First operand 18 states and 27 transitions. Second operand 4 states. [2020-10-15 20:48:49,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:48:49,139 INFO L93 Difference]: Finished difference Result 14 states and 19 transitions. [2020-10-15 20:48:49,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 20:48:49,140 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-15 20:48:49,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:48:49,140 INFO L225 Difference]: With dead ends: 14 [2020-10-15 20:48:49,141 INFO L226 Difference]: Without dead ends: 14 [2020-10-15 20:48:49,141 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 [2020-10-15 20:48:49,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-15 20:48:49,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-15 20:48:49,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-15 20:48:49,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2020-10-15 20:48:49,146 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 7 [2020-10-15 20:48:49,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:48:49,146 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 19 transitions. [2020-10-15 20:48:49,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 20:48:49,147 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 19 transitions. [2020-10-15 20:48:49,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 20:48:49,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:48:49,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:48:49,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 20:48:49,149 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:48:49,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:48:49,149 INFO L82 PathProgramCache]: Analyzing trace with hash 764279846, now seen corresponding path program 1 times [2020-10-15 20:48:49,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:48:49,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984185615] [2020-10-15 20:48:49,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:48:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:48:49,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:48:49,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984185615] [2020-10-15 20:48:49,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:48:49,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 20:48:49,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765894025] [2020-10-15 20:48:49,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 20:48:49,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:48:49,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 20:48:49,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 20:48:49,277 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. Second operand 4 states. [2020-10-15 20:48:49,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:48:49,288 INFO L93 Difference]: Finished difference Result 13 states and 18 transitions. [2020-10-15 20:48:49,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 20:48:49,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-15 20:48:49,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:48:49,289 INFO L225 Difference]: With dead ends: 13 [2020-10-15 20:48:49,290 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 20:48:49,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 20:48:49,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 20:48:49,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 20:48:49,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 20:48:49,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 20:48:49,291 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-10-15 20:48:49,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:48:49,292 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 20:48:49,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 20:48:49,292 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 20:48:49,292 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 20:48:49,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 20:48:49,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:48:49 BasicIcfg [2020-10-15 20:48:49,296 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 20:48:49,299 INFO L168 Benchmark]: Toolchain (without parser) took 3547.24 ms. Allocated memory was 246.4 MB in the beginning and 351.3 MB in the end (delta: 104.9 MB). Free memory was 201.6 MB in the beginning and 167.5 MB in the end (delta: 34.1 MB). Peak memory consumption was 138.9 MB. Max. memory is 14.2 GB. [2020-10-15 20:48:49,299 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 246.4 MB. Free memory is still 222.8 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 20:48:49,300 INFO L168 Benchmark]: CACSL2BoogieTranslator took 626.10 ms. Allocated memory was 246.4 MB in the beginning and 300.9 MB in the end (delta: 54.5 MB). Free memory was 201.6 MB in the beginning and 256.7 MB in the end (delta: -55.2 MB). Peak memory consumption was 29.7 MB. Max. memory is 14.2 GB. [2020-10-15 20:48:49,301 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.63 ms. Allocated memory is still 300.9 MB. Free memory was 256.7 MB in the beginning and 254.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 20:48:49,302 INFO L168 Benchmark]: Boogie Preprocessor took 32.06 ms. Allocated memory is still 300.9 MB. Free memory was 254.2 MB in the beginning and 251.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 20:48:49,303 INFO L168 Benchmark]: RCFGBuilder took 730.71 ms. Allocated memory is still 300.9 MB. Free memory was 251.7 MB in the beginning and 206.6 MB in the end (delta: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 14.2 GB. [2020-10-15 20:48:49,304 INFO L168 Benchmark]: TraceAbstraction took 2099.49 ms. Allocated memory was 300.9 MB in the beginning and 351.3 MB in the end (delta: 50.3 MB). Free memory was 206.6 MB in the beginning and 167.5 MB in the end (delta: 39.1 MB). Peak memory consumption was 89.5 MB. Max. memory is 14.2 GB. [2020-10-15 20:48:49,309 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 246.4 MB. Free memory is still 222.8 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 626.10 ms. Allocated memory was 246.4 MB in the beginning and 300.9 MB in the end (delta: 54.5 MB). Free memory was 201.6 MB in the beginning and 256.7 MB in the end (delta: -55.2 MB). Peak memory consumption was 29.7 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 53.63 ms. Allocated memory is still 300.9 MB. Free memory was 256.7 MB in the beginning and 254.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 32.06 ms. Allocated memory is still 300.9 MB. Free memory was 254.2 MB in the beginning and 251.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 730.71 ms. Allocated memory is still 300.9 MB. Free memory was 251.7 MB in the beginning and 206.6 MB in the end (delta: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2099.49 ms. Allocated memory was 300.9 MB in the beginning and 351.3 MB in the end (delta: 50.3 MB). Free memory was 206.6 MB in the beginning and 167.5 MB in the end (delta: 39.1 MB). Peak memory consumption was 89.5 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 244 VarBasedMoverChecksPositive, 42 VarBasedMoverChecksNegative, 19 SemBasedMoverChecksPositive, 23 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 38 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.1s, 45 PlacesBefore, 17 PlacesAfterwards, 43 TransitionsBefore, 14 TransitionsAfterwards, 378 CoEnabledTransitionPairs, 5 FixpointIterations, 10 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 32 TotalNumberOfCompositions, 798 MoverChecksTotal - PositiveResult [Line: 696]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 710]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 42 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 39 SDtfs, 19 SDslu, 20 SDs, 0 SdLazy, 24 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 459 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...