/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-wmm/safe035_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 22:18:03,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 22:18:03,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 22:18:03,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 22:18:03,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 22:18:03,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 22:18:03,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 22:18:03,507 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 22:18:03,509 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 22:18:03,510 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 22:18:03,511 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 22:18:03,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 22:18:03,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 22:18:03,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 22:18:03,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 22:18:03,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 22:18:03,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 22:18:03,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 22:18:03,518 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 22:18:03,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 22:18:03,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 22:18:03,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 22:18:03,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 22:18:03,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 22:18:03,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 22:18:03,540 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 22:18:03,540 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 22:18:03,541 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 22:18:03,542 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 22:18:03,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 22:18:03,544 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 22:18:03,545 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 22:18:03,545 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 22:18:03,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 22:18:03,547 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 22:18:03,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 22:18:03,556 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 22:18:03,598 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 22:18:03,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 22:18:03,599 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 22:18:03,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 22:18:03,600 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 22:18:03,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 22:18:03,600 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 22:18:03,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 22:18:03,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 22:18:03,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 22:18:03,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 22:18:03,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 22:18:03,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 22:18:03,603 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 22:18:03,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 22:18:03,603 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 22:18:03,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 22:18:03,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 22:18:03,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 22:18:03,604 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 22:18:03,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 22:18:03,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 22:18:03,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 22:18:03,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 22:18:03,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 22:18:03,605 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 22:18:03,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 22:18:03,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 22:18:03,606 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 22:18:03,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 22:18:03,916 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 22:18:03,920 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 22:18:03,921 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 22:18:03,922 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 22:18:03,922 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.opt.i [2020-10-15 22:18:03,986 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebe607d43/065b5c2e26254ba68228621d96130b5f/FLAGc8602e5fc [2020-10-15 22:18:04,589 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 22:18:04,590 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.opt.i [2020-10-15 22:18:04,609 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebe607d43/065b5c2e26254ba68228621d96130b5f/FLAGc8602e5fc [2020-10-15 22:18:04,965 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebe607d43/065b5c2e26254ba68228621d96130b5f [2020-10-15 22:18:04,974 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 22:18:04,976 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 22:18:04,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 22:18:04,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 22:18:04,981 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 22:18:04,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:18:04" (1/1) ... [2020-10-15 22:18:04,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fa736f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:18:04, skipping insertion in model container [2020-10-15 22:18:04,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:18:04" (1/1) ... [2020-10-15 22:18:04,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 22:18:05,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 22:18:05,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:18:05,531 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 22:18:05,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:18:05,708 INFO L208 MainTranslator]: Completed translation [2020-10-15 22:18:05,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:18:05 WrapperNode [2020-10-15 22:18:05,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 22:18:05,712 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 22:18:05,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 22:18:05,713 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 22:18:05,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:18:05" (1/1) ... [2020-10-15 22:18:05,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:18:05" (1/1) ... [2020-10-15 22:18:05,772 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 22:18:05,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 22:18:05,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 22:18:05,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 22:18:05,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:18:05" (1/1) ... [2020-10-15 22:18:05,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:18:05" (1/1) ... [2020-10-15 22:18:05,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:18:05" (1/1) ... [2020-10-15 22:18:05,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:18:05" (1/1) ... [2020-10-15 22:18:05,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:18:05" (1/1) ... [2020-10-15 22:18:05,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:18:05" (1/1) ... [2020-10-15 22:18:05,798 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:18:05" (1/1) ... [2020-10-15 22:18:05,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 22:18:05,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 22:18:05,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 22:18:05,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 22:18:05,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:18:05" (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 22:18:05,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 22:18:05,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-15 22:18:05,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 22:18:05,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 22:18:05,878 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-15 22:18:05,878 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-15 22:18:05,878 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-15 22:18:05,878 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-15 22:18:05,878 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-15 22:18:05,879 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-15 22:18:05,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-15 22:18:05,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 22:18:05,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 22:18:05,881 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 22:18:06,244 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 22:18:06,245 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-15 22:18:06,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:18:06 BoogieIcfgContainer [2020-10-15 22:18:06,247 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 22:18:06,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 22:18:06,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 22:18:06,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 22:18:06,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 10:18:04" (1/3) ... [2020-10-15 22:18:06,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35927a2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:18:06, skipping insertion in model container [2020-10-15 22:18:06,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:18:05" (2/3) ... [2020-10-15 22:18:06,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35927a2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:18:06, skipping insertion in model container [2020-10-15 22:18:06,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:18:06" (3/3) ... [2020-10-15 22:18:06,256 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_pso.opt.i [2020-10-15 22:18:06,267 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 22:18:06,268 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 22:18:06,275 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 22:18:06,276 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 22:18:06,331 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:18:06,332 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:18:06,332 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:18:06,332 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:18:06,333 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:18:06,333 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:18:06,334 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:18:06,334 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:18:06,334 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:18:06,334 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:18:06,335 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:18:06,335 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:18:06,335 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:18:06,335 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:18:06,336 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:18:06,336 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:18:06,338 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:18:06,339 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:18:06,345 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:18:06,346 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:18:06,348 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:18:06,348 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:18:06,353 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:18:06,354 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:18:06,354 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:18:06,354 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:18:06,356 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:18:06,356 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:18:06,357 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:18:06,357 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:18:06,371 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-15 22:18:06,390 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 22:18:06,390 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 22:18:06,390 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 22:18:06,390 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 22:18:06,390 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 22:18:06,390 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 22:18:06,390 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 22:18:06,391 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 22:18:06,403 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 22:18:06,406 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-15 22:18:06,409 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-15 22:18:06,411 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-15 22:18:06,457 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-15 22:18:06,458 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 22:18:06,463 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-15 22:18:06,471 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-15 22:18:08,341 INFO L132 LiptonReduction]: Checked pairs total: 2520 [2020-10-15 22:18:08,341 INFO L134 LiptonReduction]: Total number of compositions: 58 [2020-10-15 22:18:08,349 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-10-15 22:18:08,376 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-15 22:18:08,379 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-15 22:18:08,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 22:18:08,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:18:08,388 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:18:08,388 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:18:08,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:18:08,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1626757645, now seen corresponding path program 1 times [2020-10-15 22:18:08,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:18:08,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941917033] [2020-10-15 22:18:08,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:18:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:18:08,641 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 22:18:08,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941917033] [2020-10-15 22:18:08,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:18:08,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 22:18:08,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564195520] [2020-10-15 22:18:08,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 22:18:08,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:18:08,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 22:18:08,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:18:08,661 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-15 22:18:08,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:18:08,754 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-10-15 22:18:08,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 22:18:08,761 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-15 22:18:08,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:18:08,787 INFO L225 Difference]: With dead ends: 294 [2020-10-15 22:18:08,787 INFO L226 Difference]: Without dead ends: 230 [2020-10-15 22:18:08,788 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 22:18:08,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-15 22:18:08,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-10-15 22:18:08,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-15 22:18:08,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-10-15 22:18:08,865 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-10-15 22:18:08,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:18:08,867 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-10-15 22:18:08,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 22:18:08,867 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-10-15 22:18:08,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 22:18:08,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:18:08,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:18:08,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 22:18:08,869 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:18:08,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:18:08,870 INFO L82 PathProgramCache]: Analyzing trace with hash 113122264, now seen corresponding path program 1 times [2020-10-15 22:18:08,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:18:08,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270894890] [2020-10-15 22:18:08,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:18:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:18:08,929 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 22:18:08,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270894890] [2020-10-15 22:18:08,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:18:08,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 22:18:08,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960797373] [2020-10-15 22:18:08,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 22:18:08,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:18:08,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 22:18:08,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:18:08,933 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 3 states. [2020-10-15 22:18:08,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:18:08,955 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-10-15 22:18:08,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 22:18:08,956 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-15 22:18:08,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:18:08,959 INFO L225 Difference]: With dead ends: 202 [2020-10-15 22:18:08,959 INFO L226 Difference]: Without dead ends: 202 [2020-10-15 22:18:08,960 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 22:18:08,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-15 22:18:08,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-15 22:18:08,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-15 22:18:08,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-10-15 22:18:08,977 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-10-15 22:18:08,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:18:08,978 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-10-15 22:18:08,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 22:18:08,978 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-10-15 22:18:08,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 22:18:08,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:18:08,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:18:08,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 22:18:08,980 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:18:08,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:18:08,981 INFO L82 PathProgramCache]: Analyzing trace with hash -54559497, now seen corresponding path program 1 times [2020-10-15 22:18:08,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:18:08,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480286560] [2020-10-15 22:18:08,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:18:09,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:18:09,032 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 22:18:09,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480286560] [2020-10-15 22:18:09,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:18:09,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:18:09,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675016992] [2020-10-15 22:18:09,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 22:18:09,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:18:09,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 22:18:09,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:18:09,034 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-10-15 22:18:09,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:18:09,052 INFO L93 Difference]: Finished difference Result 266 states and 704 transitions. [2020-10-15 22:18:09,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 22:18:09,052 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-15 22:18:09,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:18:09,054 INFO L225 Difference]: With dead ends: 266 [2020-10-15 22:18:09,055 INFO L226 Difference]: Without dead ends: 140 [2020-10-15 22:18:09,055 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 22:18:09,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-15 22:18:09,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-10-15 22:18:09,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-15 22:18:09,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 362 transitions. [2020-10-15 22:18:09,067 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 362 transitions. Word has length 10 [2020-10-15 22:18:09,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:18:09,067 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 362 transitions. [2020-10-15 22:18:09,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 22:18:09,068 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 362 transitions. [2020-10-15 22:18:09,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 22:18:09,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:18:09,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:18:09,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 22:18:09,069 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:18:09,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:18:09,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1691362226, now seen corresponding path program 1 times [2020-10-15 22:18:09,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:18:09,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392913171] [2020-10-15 22:18:09,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:18:09,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:18:09,175 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 22:18:09,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392913171] [2020-10-15 22:18:09,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:18:09,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:18:09,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143546236] [2020-10-15 22:18:09,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:18:09,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:18:09,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:18:09,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:18:09,178 INFO L87 Difference]: Start difference. First operand 140 states and 362 transitions. Second operand 4 states. [2020-10-15 22:18:09,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:18:09,220 INFO L93 Difference]: Finished difference Result 165 states and 389 transitions. [2020-10-15 22:18:09,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:18:09,221 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-15 22:18:09,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:18:09,222 INFO L225 Difference]: With dead ends: 165 [2020-10-15 22:18:09,222 INFO L226 Difference]: Without dead ends: 113 [2020-10-15 22:18:09,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 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 22:18:09,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-15 22:18:09,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-10-15 22:18:09,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-15 22:18:09,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 257 transitions. [2020-10-15 22:18:09,231 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 257 transitions. Word has length 11 [2020-10-15 22:18:09,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:18:09,231 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 257 transitions. [2020-10-15 22:18:09,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:18:09,231 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 257 transitions. [2020-10-15 22:18:09,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 22:18:09,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:18:09,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:18:09,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 22:18:09,233 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:18:09,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:18:09,233 INFO L82 PathProgramCache]: Analyzing trace with hash -891715752, now seen corresponding path program 1 times [2020-10-15 22:18:09,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:18:09,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171934795] [2020-10-15 22:18:09,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:18:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:18:09,308 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 22:18:09,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171934795] [2020-10-15 22:18:09,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:18:09,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:18:09,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170708591] [2020-10-15 22:18:09,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:18:09,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:18:09,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:18:09,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:18:09,310 INFO L87 Difference]: Start difference. First operand 113 states and 257 transitions. Second operand 5 states. [2020-10-15 22:18:09,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:18:09,350 INFO L93 Difference]: Finished difference Result 111 states and 232 transitions. [2020-10-15 22:18:09,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 22:18:09,351 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-15 22:18:09,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:18:09,352 INFO L225 Difference]: With dead ends: 111 [2020-10-15 22:18:09,352 INFO L226 Difference]: Without dead ends: 80 [2020-10-15 22:18:09,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 22:18:09,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-15 22:18:09,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-15 22:18:09,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-15 22:18:09,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 159 transitions. [2020-10-15 22:18:09,358 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 159 transitions. Word has length 12 [2020-10-15 22:18:09,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:18:09,358 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 159 transitions. [2020-10-15 22:18:09,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:18:09,358 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 159 transitions. [2020-10-15 22:18:09,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 22:18:09,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:18:09,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:18:09,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 22:18:09,360 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:18:09,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:18:09,360 INFO L82 PathProgramCache]: Analyzing trace with hash 2053094164, now seen corresponding path program 1 times [2020-10-15 22:18:09,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:18:09,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887811728] [2020-10-15 22:18:09,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:18:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:18:09,443 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 22:18:09,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887811728] [2020-10-15 22:18:09,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:18:09,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 22:18:09,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525791413] [2020-10-15 22:18:09,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 22:18:09,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:18:09,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 22:18:09,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 22:18:09,445 INFO L87 Difference]: Start difference. First operand 80 states and 159 transitions. Second operand 6 states. [2020-10-15 22:18:09,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:18:09,497 INFO L93 Difference]: Finished difference Result 75 states and 147 transitions. [2020-10-15 22:18:09,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 22:18:09,498 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-15 22:18:09,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:18:09,499 INFO L225 Difference]: With dead ends: 75 [2020-10-15 22:18:09,499 INFO L226 Difference]: Without dead ends: 66 [2020-10-15 22:18:09,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-15 22:18:09,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-15 22:18:09,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-15 22:18:09,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-15 22:18:09,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 131 transitions. [2020-10-15 22:18:09,503 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 131 transitions. Word has length 14 [2020-10-15 22:18:09,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:18:09,504 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 131 transitions. [2020-10-15 22:18:09,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 22:18:09,504 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 131 transitions. [2020-10-15 22:18:09,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 22:18:09,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:18:09,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:18:09,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 22:18:09,506 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:18:09,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:18:09,506 INFO L82 PathProgramCache]: Analyzing trace with hash -913032564, now seen corresponding path program 1 times [2020-10-15 22:18:09,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:18:09,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521536131] [2020-10-15 22:18:09,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:18:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:18:09,541 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 22:18:09,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521536131] [2020-10-15 22:18:09,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:18:09,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:18:09,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964092271] [2020-10-15 22:18:09,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:18:09,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:18:09,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:18:09,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:18:09,543 INFO L87 Difference]: Start difference. First operand 66 states and 131 transitions. Second operand 4 states. [2020-10-15 22:18:09,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:18:09,562 INFO L93 Difference]: Finished difference Result 85 states and 165 transitions. [2020-10-15 22:18:09,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 22:18:09,563 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-15 22:18:09,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:18:09,564 INFO L225 Difference]: With dead ends: 85 [2020-10-15 22:18:09,564 INFO L226 Difference]: Without dead ends: 48 [2020-10-15 22:18:09,564 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 22:18:09,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-15 22:18:09,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-10-15 22:18:09,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-15 22:18:09,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 83 transitions. [2020-10-15 22:18:09,567 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 83 transitions. Word has length 17 [2020-10-15 22:18:09,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:18:09,568 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 83 transitions. [2020-10-15 22:18:09,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:18:09,568 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 83 transitions. [2020-10-15 22:18:09,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 22:18:09,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:18:09,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:18:09,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 22:18:09,569 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:18:09,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:18:09,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1376526520, now seen corresponding path program 2 times [2020-10-15 22:18:09,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:18:09,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413427612] [2020-10-15 22:18:09,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:18:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:18:09,603 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 22:18:09,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413427612] [2020-10-15 22:18:09,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:18:09,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:18:09,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580411873] [2020-10-15 22:18:09,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:18:09,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:18:09,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:18:09,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:18:09,605 INFO L87 Difference]: Start difference. First operand 48 states and 83 transitions. Second operand 4 states. [2020-10-15 22:18:09,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:18:09,624 INFO L93 Difference]: Finished difference Result 73 states and 130 transitions. [2020-10-15 22:18:09,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:18:09,624 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-15 22:18:09,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:18:09,625 INFO L225 Difference]: With dead ends: 73 [2020-10-15 22:18:09,625 INFO L226 Difference]: Without dead ends: 42 [2020-10-15 22:18:09,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:18:09,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-15 22:18:09,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-15 22:18:09,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-15 22:18:09,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 71 transitions. [2020-10-15 22:18:09,628 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 71 transitions. Word has length 17 [2020-10-15 22:18:09,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:18:09,629 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 71 transitions. [2020-10-15 22:18:09,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:18:09,629 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 71 transitions. [2020-10-15 22:18:09,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 22:18:09,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:18:09,630 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:18:09,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 22:18:09,630 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:18:09,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:18:09,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1323635892, now seen corresponding path program 3 times [2020-10-15 22:18:09,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:18:09,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535127448] [2020-10-15 22:18:09,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:18:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:18:09,662 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 22:18:09,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535127448] [2020-10-15 22:18:09,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:18:09,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:18:09,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452951834] [2020-10-15 22:18:09,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:18:09,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:18:09,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:18:09,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:18:09,665 INFO L87 Difference]: Start difference. First operand 42 states and 71 transitions. Second operand 4 states. [2020-10-15 22:18:09,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:18:09,675 INFO L93 Difference]: Finished difference Result 41 states and 70 transitions. [2020-10-15 22:18:09,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 22:18:09,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-15 22:18:09,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:18:09,675 INFO L225 Difference]: With dead ends: 41 [2020-10-15 22:18:09,676 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 22:18:09,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:18:09,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 22:18:09,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 22:18:09,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 22:18:09,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 22:18:09,677 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-15 22:18:09,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:18:09,677 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 22:18:09,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:18:09,677 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 22:18:09,678 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 22:18:09,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 22:18:09,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 10:18:09 BasicIcfg [2020-10-15 22:18:09,681 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 22:18:09,684 INFO L168 Benchmark]: Toolchain (without parser) took 4707.52 ms. Allocated memory was 251.1 MB in the beginning and 369.6 MB in the end (delta: 118.5 MB). Free memory was 206.2 MB in the beginning and 222.0 MB in the end (delta: -15.8 MB). Peak memory consumption was 102.7 MB. Max. memory is 14.2 GB. [2020-10-15 22:18:09,684 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 251.1 MB. Free memory is still 227.5 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 22:18:09,685 INFO L168 Benchmark]: CACSL2BoogieTranslator took 734.04 ms. Allocated memory was 251.1 MB in the beginning and 313.5 MB in the end (delta: 62.4 MB). Free memory was 206.2 MB in the beginning and 264.4 MB in the end (delta: -58.2 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. [2020-10-15 22:18:09,686 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.97 ms. Allocated memory is still 313.5 MB. Free memory was 264.4 MB in the beginning and 261.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 22:18:09,687 INFO L168 Benchmark]: Boogie Preprocessor took 29.01 ms. Allocated memory is still 313.5 MB. Free memory was 261.9 MB in the beginning and 259.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 22:18:09,688 INFO L168 Benchmark]: RCFGBuilder took 445.51 ms. Allocated memory is still 313.5 MB. Free memory was 259.3 MB in the beginning and 237.5 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-15 22:18:09,689 INFO L168 Benchmark]: TraceAbstraction took 3432.88 ms. Allocated memory was 313.5 MB in the beginning and 369.6 MB in the end (delta: 56.1 MB). Free memory was 237.5 MB in the beginning and 222.0 MB in the end (delta: 15.5 MB). Peak memory consumption was 71.6 MB. Max. memory is 14.2 GB. [2020-10-15 22:18:09,693 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 251.1 MB. Free memory is still 227.5 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 734.04 ms. Allocated memory was 251.1 MB in the beginning and 313.5 MB in the end (delta: 62.4 MB). Free memory was 206.2 MB in the beginning and 264.4 MB in the end (delta: -58.2 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 59.97 ms. Allocated memory is still 313.5 MB. Free memory was 264.4 MB in the beginning and 261.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 29.01 ms. Allocated memory is still 313.5 MB. Free memory was 261.9 MB in the beginning and 259.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 445.51 ms. Allocated memory is still 313.5 MB. Free memory was 259.3 MB in the beginning and 237.5 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3432.88 ms. Allocated memory was 313.5 MB in the beginning and 369.6 MB in the end (delta: 56.1 MB). Free memory was 237.5 MB in the beginning and 222.0 MB in the end (delta: 15.5 MB). Peak memory consumption was 71.6 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 837 VarBasedMoverChecksPositive, 42 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 63 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 78 PlacesBefore, 31 PlacesAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 58 TotalNumberOfCompositions, 2520 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 172 SDtfs, 128 SDslu, 202 SDs, 0 SdLazy, 120 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 3412 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...