/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:28:07,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:28:07,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:28:07,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:28:07,394 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:28:07,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:28:07,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:28:07,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:28:07,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:28:07,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:28:07,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:28:07,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:28:07,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:28:07,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:28:07,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:28:07,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:28:07,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:28:07,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:28:07,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:28:07,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:28:07,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:28:07,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:28:07,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:28:07,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:28:07,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:28:07,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:28:07,435 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:28:07,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:28:07,437 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:28:07,438 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:28:07,438 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:28:07,439 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:28:07,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:28:07,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:28:07,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:28:07,444 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:28:07,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:28:07,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:28:07,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:28:07,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:28:07,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:28:07,449 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-VariableLbe.epf [2020-04-18 02:28:07,484 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:28:07,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:28:07,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:28:07,486 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:28:07,486 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:28:07,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:28:07,488 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:28:07,489 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:28:07,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:28:07,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:28:07,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:28:07,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:28:07,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:28:07,490 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:28:07,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:28:07,490 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:28:07,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:28:07,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:28:07,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:28:07,491 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:28:07,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:28:07,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:28:07,494 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:28:07,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:28:07,495 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:28:07,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:28:07,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:28:07,495 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:28:07,495 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:28:07,496 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:28:07,767 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:28:07,778 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:28:07,782 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:28:07,783 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:28:07,783 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:28:07,784 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.oepc.i [2020-04-18 02:28:07,857 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8af378534/c9bcf15b8d864213b29203f5a457869d/FLAG2c25eecf5 [2020-04-18 02:28:08,452 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:28:08,453 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_tso.oepc.i [2020-04-18 02:28:08,470 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8af378534/c9bcf15b8d864213b29203f5a457869d/FLAG2c25eecf5 [2020-04-18 02:28:08,694 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8af378534/c9bcf15b8d864213b29203f5a457869d [2020-04-18 02:28:08,703 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:28:08,720 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:28:08,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:28:08,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:28:08,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:28:08,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:28:08" (1/1) ... [2020-04-18 02:28:08,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@402c7938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:28:08, skipping insertion in model container [2020-04-18 02:28:08,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:28:08" (1/1) ... [2020-04-18 02:28:08,736 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:28:08,787 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:28:09,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:28:09,304 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:28:09,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:28:09,468 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:28:09,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:28:09 WrapperNode [2020-04-18 02:28:09,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:28:09,470 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:28:09,470 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:28:09,471 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:28:09,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:28:09" (1/1) ... [2020-04-18 02:28:09,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:28:09" (1/1) ... [2020-04-18 02:28:09,516 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:28:09,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:28:09,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:28:09,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:28:09,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:28:09" (1/1) ... [2020-04-18 02:28:09,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:28:09" (1/1) ... [2020-04-18 02:28:09,530 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:28:09" (1/1) ... [2020-04-18 02:28:09,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:28:09" (1/1) ... [2020-04-18 02:28:09,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:28:09" (1/1) ... [2020-04-18 02:28:09,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:28:09" (1/1) ... [2020-04-18 02:28:09,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:28:09" (1/1) ... [2020-04-18 02:28:09,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:28:09,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:28:09,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:28:09,545 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:28:09,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:28:09" (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 [2020-04-18 02:28:09,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:28:09,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:28:09,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:28:09,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:28:09,612 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:28:09,612 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:28:09,613 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:28:09,613 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:28:09,613 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:28:09,614 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:28:09,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:28:09,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:28:09,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:28:09,616 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 02:28:09,975 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:28:09,976 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:28:09,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:28:09 BoogieIcfgContainer [2020-04-18 02:28:09,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:28:09,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:28:09,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:28:09,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:28:09,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:28:08" (1/3) ... [2020-04-18 02:28:09,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b5edd90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:28:09, skipping insertion in model container [2020-04-18 02:28:09,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:28:09" (2/3) ... [2020-04-18 02:28:09,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b5edd90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:28:09, skipping insertion in model container [2020-04-18 02:28:09,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:28:09" (3/3) ... [2020-04-18 02:28:09,991 INFO L109 eAbstractionObserver]: Analyzing ICFG safe018_tso.oepc.i [2020-04-18 02:28:10,001 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:28:10,002 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:28:10,008 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:28:10,009 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:28:10,039 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:28:10,039 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:28:10,039 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:28:10,040 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:28:10,040 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:28:10,041 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:28:10,041 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:28:10,041 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:28:10,042 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:28:10,042 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:28:10,042 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:28:10,043 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:28:10,043 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:28:10,043 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:28:10,044 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:28:10,044 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:28:10,044 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:28:10,045 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:28:10,049 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:28:10,049 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:28:10,050 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:28:10,050 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:28:10,068 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:28:10,068 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:28:10,068 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:28:10,069 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:28:10,071 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:28:10,071 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:28:10,072 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:28:10,072 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:28:10,095 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:28:10,111 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:28:10,111 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:28:10,111 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:28:10,111 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:28:10,111 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:28:10,112 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:28:10,112 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:28:10,112 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:28:10,127 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-18 02:28:10,129 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 02:28:10,175 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 02:28:10,175 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:28:10,180 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 02:28:10,183 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 02:28:10,207 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 02:28:10,208 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:28:10,208 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 02:28:10,210 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-04-18 02:28:10,211 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:28:11,845 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1996 [2020-04-18 02:28:11,845 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-18 02:28:11,850 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-04-18 02:28:11,876 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-04-18 02:28:11,880 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-04-18 02:28:11,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:28:11,888 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:28:11,889 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:28:11,890 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:28:11,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:28:11,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1153400973, now seen corresponding path program 1 times [2020-04-18 02:28:11,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:28:11,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076001003] [2020-04-18 02:28:11,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:28:12,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:28:12,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:28:12,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076001003] [2020-04-18 02:28:12,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:28:12,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:28:12,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345000637] [2020-04-18 02:28:12,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:28:12,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:28:12,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:28:12,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:28:12,210 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-04-18 02:28:12,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:28:12,251 INFO L93 Difference]: Finished difference Result 214 states and 593 transitions. [2020-04-18 02:28:12,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:28:12,253 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 02:28:12,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:28:12,269 INFO L225 Difference]: With dead ends: 214 [2020-04-18 02:28:12,269 INFO L226 Difference]: Without dead ends: 166 [2020-04-18 02:28:12,271 INFO L678 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 [2020-04-18 02:28:12,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-04-18 02:28:12,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-04-18 02:28:12,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-04-18 02:28:12,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 441 transitions. [2020-04-18 02:28:12,335 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 441 transitions. Word has length 8 [2020-04-18 02:28:12,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:28:12,336 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 441 transitions. [2020-04-18 02:28:12,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:28:12,337 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 441 transitions. [2020-04-18 02:28:12,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 02:28:12,338 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:28:12,338 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:28:12,339 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:28:12,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:28:12,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1395710546, now seen corresponding path program 1 times [2020-04-18 02:28:12,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:28:12,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637923516] [2020-04-18 02:28:12,340 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:28:12,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:28:12,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:28:12,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637923516] [2020-04-18 02:28:12,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:28:12,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:28:12,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540899551] [2020-04-18 02:28:12,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:28:12,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:28:12,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:28:12,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:28:12,465 INFO L87 Difference]: Start difference. First operand 166 states and 441 transitions. Second operand 4 states. [2020-04-18 02:28:12,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:28:12,509 INFO L93 Difference]: Finished difference Result 202 states and 516 transitions. [2020-04-18 02:28:12,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:28:12,510 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 02:28:12,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:28:12,512 INFO L225 Difference]: With dead ends: 202 [2020-04-18 02:28:12,512 INFO L226 Difference]: Without dead ends: 130 [2020-04-18 02:28:12,513 INFO L678 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 [2020-04-18 02:28:12,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-04-18 02:28:12,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-04-18 02:28:12,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-04-18 02:28:12,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 322 transitions. [2020-04-18 02:28:12,527 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 322 transitions. Word has length 9 [2020-04-18 02:28:12,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:28:12,528 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 322 transitions. [2020-04-18 02:28:12,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:28:12,528 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 322 transitions. [2020-04-18 02:28:12,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:28:12,529 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:28:12,529 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:28:12,530 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:28:12,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:28:12,530 INFO L82 PathProgramCache]: Analyzing trace with hash -316797667, now seen corresponding path program 1 times [2020-04-18 02:28:12,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:28:12,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54345762] [2020-04-18 02:28:12,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:28:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:28:12,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:28:12,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54345762] [2020-04-18 02:28:12,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:28:12,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:28:12,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766095592] [2020-04-18 02:28:12,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:28:12,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:28:12,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:28:12,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:28:12,586 INFO L87 Difference]: Start difference. First operand 130 states and 322 transitions. Second operand 3 states. [2020-04-18 02:28:12,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:28:12,594 INFO L93 Difference]: Finished difference Result 124 states and 303 transitions. [2020-04-18 02:28:12,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:28:12,594 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-18 02:28:12,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:28:12,596 INFO L225 Difference]: With dead ends: 124 [2020-04-18 02:28:12,596 INFO L226 Difference]: Without dead ends: 124 [2020-04-18 02:28:12,596 INFO L678 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 [2020-04-18 02:28:12,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-04-18 02:28:12,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-04-18 02:28:12,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-04-18 02:28:12,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-04-18 02:28:12,607 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 10 [2020-04-18 02:28:12,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:28:12,607 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-04-18 02:28:12,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:28:12,607 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-04-18 02:28:12,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:28:12,608 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:28:12,609 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:28:12,609 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:28:12,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:28:12,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1215717328, now seen corresponding path program 1 times [2020-04-18 02:28:12,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:28:12,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043002783] [2020-04-18 02:28:12,610 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:28:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:28:12,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:28:12,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043002783] [2020-04-18 02:28:12,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:28:12,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:28:12,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939355972] [2020-04-18 02:28:12,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:28:12,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:28:12,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:28:12,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:28:12,671 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 4 states. [2020-04-18 02:28:12,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:28:12,693 INFO L93 Difference]: Finished difference Result 142 states and 336 transitions. [2020-04-18 02:28:12,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:28:12,696 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 02:28:12,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:28:12,697 INFO L225 Difference]: With dead ends: 142 [2020-04-18 02:28:12,697 INFO L226 Difference]: Without dead ends: 64 [2020-04-18 02:28:12,698 INFO L678 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 [2020-04-18 02:28:12,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-04-18 02:28:12,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-04-18 02:28:12,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-04-18 02:28:12,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 137 transitions. [2020-04-18 02:28:12,703 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 137 transitions. Word has length 11 [2020-04-18 02:28:12,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:28:12,703 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 137 transitions. [2020-04-18 02:28:12,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:28:12,703 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 137 transitions. [2020-04-18 02:28:12,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:28:12,704 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:28:12,704 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:28:12,705 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:28:12,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:28:12,705 INFO L82 PathProgramCache]: Analyzing trace with hash 500064419, now seen corresponding path program 1 times [2020-04-18 02:28:12,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:28:12,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106838150] [2020-04-18 02:28:12,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:28:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:28:12,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:28:12,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106838150] [2020-04-18 02:28:12,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:28:12,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:28:12,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497768281] [2020-04-18 02:28:12,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:28:12,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:28:12,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:28:12,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:28:12,799 INFO L87 Difference]: Start difference. First operand 64 states and 137 transitions. Second operand 4 states. [2020-04-18 02:28:12,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:28:12,830 INFO L93 Difference]: Finished difference Result 77 states and 150 transitions. [2020-04-18 02:28:12,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:28:12,831 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 02:28:12,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:28:12,832 INFO L225 Difference]: With dead ends: 77 [2020-04-18 02:28:12,832 INFO L226 Difference]: Without dead ends: 56 [2020-04-18 02:28:12,833 INFO L678 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 [2020-04-18 02:28:12,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-04-18 02:28:12,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-04-18 02:28:12,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-04-18 02:28:12,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 109 transitions. [2020-04-18 02:28:12,840 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 109 transitions. Word has length 12 [2020-04-18 02:28:12,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:28:12,840 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 109 transitions. [2020-04-18 02:28:12,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:28:12,840 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 109 transitions. [2020-04-18 02:28:12,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:28:12,841 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:28:12,841 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:28:12,841 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:28:12,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:28:12,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1337478729, now seen corresponding path program 1 times [2020-04-18 02:28:12,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:28:12,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408468977] [2020-04-18 02:28:12,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:28:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:28:12,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:28:12,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408468977] [2020-04-18 02:28:12,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:28:12,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:28:12,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604920290] [2020-04-18 02:28:12,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:28:12,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:28:12,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:28:12,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:28:12,927 INFO L87 Difference]: Start difference. First operand 56 states and 109 transitions. Second operand 5 states. [2020-04-18 02:28:12,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:28:12,992 INFO L93 Difference]: Finished difference Result 57 states and 99 transitions. [2020-04-18 02:28:12,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:28:12,992 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 02:28:12,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:28:12,993 INFO L225 Difference]: With dead ends: 57 [2020-04-18 02:28:12,993 INFO L226 Difference]: Without dead ends: 42 [2020-04-18 02:28:12,994 INFO L678 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 [2020-04-18 02:28:12,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-04-18 02:28:12,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-04-18 02:28:12,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-04-18 02:28:12,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 69 transitions. [2020-04-18 02:28:12,997 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 69 transitions. Word has length 13 [2020-04-18 02:28:12,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:28:12,998 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 69 transitions. [2020-04-18 02:28:12,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:28:12,998 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 69 transitions. [2020-04-18 02:28:12,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:28:12,999 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:28:12,999 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:28:12,999 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:28:12,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:28:12,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1451530590, now seen corresponding path program 1 times [2020-04-18 02:28:13,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:28:13,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887553586] [2020-04-18 02:28:13,000 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:28:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:28:13,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:28:13,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887553586] [2020-04-18 02:28:13,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:28:13,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:28:13,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408806199] [2020-04-18 02:28:13,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:28:13,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:28:13,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:28:13,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:28:13,091 INFO L87 Difference]: Start difference. First operand 42 states and 69 transitions. Second operand 6 states. [2020-04-18 02:28:13,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:28:13,146 INFO L93 Difference]: Finished difference Result 39 states and 61 transitions. [2020-04-18 02:28:13,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 02:28:13,146 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-04-18 02:28:13,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:28:13,147 INFO L225 Difference]: With dead ends: 39 [2020-04-18 02:28:13,147 INFO L226 Difference]: Without dead ends: 33 [2020-04-18 02:28:13,148 INFO L678 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 [2020-04-18 02:28:13,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-04-18 02:28:13,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-04-18 02:28:13,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-04-18 02:28:13,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2020-04-18 02:28:13,150 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 14 [2020-04-18 02:28:13,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:28:13,151 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2020-04-18 02:28:13,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:28:13,151 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-04-18 02:28:13,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 02:28:13,152 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:28:13,152 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:28:13,152 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:28:13,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:28:13,153 INFO L82 PathProgramCache]: Analyzing trace with hash -958438309, now seen corresponding path program 1 times [2020-04-18 02:28:13,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:28:13,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202846646] [2020-04-18 02:28:13,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:28:13,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:28:13,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:28:13,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202846646] [2020-04-18 02:28:13,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:28:13,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:28:13,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750785353] [2020-04-18 02:28:13,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:28:13,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:28:13,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:28:13,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:28:13,191 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand 4 states. [2020-04-18 02:28:13,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:28:13,203 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2020-04-18 02:28:13,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:28:13,204 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-04-18 02:28:13,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:28:13,204 INFO L225 Difference]: With dead ends: 32 [2020-04-18 02:28:13,204 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:28:13,205 INFO L678 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 [2020-04-18 02:28:13,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:28:13,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:28:13,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:28:13,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:28:13,206 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-04-18 02:28:13,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:28:13,206 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:28:13,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:28:13,206 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:28:13,206 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:28:13,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:28:13 BasicIcfg [2020-04-18 02:28:13,211 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:28:13,214 INFO L168 Benchmark]: Toolchain (without parser) took 4507.98 ms. Allocated memory was 146.3 MB in the beginning and 245.9 MB in the end (delta: 99.6 MB). Free memory was 102.4 MB in the beginning and 186.2 MB in the end (delta: -83.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2020-04-18 02:28:13,214 INFO L168 Benchmark]: CDTParser took 1.38 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 02:28:13,215 INFO L168 Benchmark]: CACSL2BoogieTranslator took 748.58 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 100.5 MB in the beginning and 159.1 MB in the end (delta: -58.6 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:28:13,216 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.39 ms. Allocated memory is still 204.5 MB. Free memory was 159.1 MB in the beginning and 157.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:28:13,217 INFO L168 Benchmark]: Boogie Preprocessor took 27.39 ms. Allocated memory is still 204.5 MB. Free memory was 157.1 MB in the beginning and 155.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 02:28:13,217 INFO L168 Benchmark]: RCFGBuilder took 437.38 ms. Allocated memory is still 204.5 MB. Free memory was 155.8 MB in the beginning and 133.5 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-04-18 02:28:13,218 INFO L168 Benchmark]: TraceAbstraction took 3227.76 ms. Allocated memory was 204.5 MB in the beginning and 245.9 MB in the end (delta: 41.4 MB). Free memory was 132.8 MB in the beginning and 186.2 MB in the end (delta: -53.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:28:13,222 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.38 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 748.58 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 100.5 MB in the beginning and 159.1 MB in the end (delta: -58.6 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 46.39 ms. Allocated memory is still 204.5 MB. Free memory was 159.1 MB in the beginning and 157.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.39 ms. Allocated memory is still 204.5 MB. Free memory was 157.1 MB in the beginning and 155.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 437.38 ms. Allocated memory is still 204.5 MB. Free memory was 155.8 MB in the beginning and 133.5 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3227.76 ms. Allocated memory was 204.5 MB in the beginning and 245.9 MB in the end (delta: 41.4 MB). Free memory was 132.8 MB in the beginning and 186.2 MB in the end (delta: -53.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 77 ProgramPointsBefore, 30 ProgramPointsAfterwards, 69 TransitionsBefore, 20 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 610 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1996 CheckedPairsTotal, 58 TotalNumberOfCompositions - 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, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 125 SDtfs, 114 SDslu, 139 SDs, 0 SdLazy, 101 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 3147 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...